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1c3c688cc2 | |||
4a488429bf | |||
c6c90800d4 | |||
63d3c30607 |
4
.vscode/settings.json
vendored
4
.vscode/settings.json
vendored
@@ -4,6 +4,10 @@
|
||||
"Git Bash": {
|
||||
"path": "C:\\Program Files\\Git\\bin\\bash.exe",
|
||||
"icon": "terminal-bash"
|
||||
},
|
||||
"Git-Bash": {
|
||||
"path": "D:\\Git\\bin\\bash.exe",
|
||||
"icon": "terminal-bash"
|
||||
}
|
||||
},
|
||||
"terminal.integrated.defaultProfile.windows": "Git-Bash",
|
||||
|
22
.vscode/tasks.json
vendored
22
.vscode/tasks.json
vendored
@@ -11,7 +11,11 @@
|
||||
"Build",
|
||||
"Flash MCU"
|
||||
],
|
||||
"dependsOrder": "sequence"
|
||||
"dependsOrder": "sequence",
|
||||
"icon": {
|
||||
"id": "insert",
|
||||
"tooltip": "Build and Flash"
|
||||
}
|
||||
},
|
||||
{
|
||||
"label": "Flash MCU",
|
||||
@@ -31,6 +35,10 @@
|
||||
},
|
||||
"presentation": {
|
||||
"clear": true
|
||||
},
|
||||
"icon": {
|
||||
"id": "gather",
|
||||
"tooltip": "Flash MCU"
|
||||
}
|
||||
},
|
||||
{
|
||||
@@ -51,6 +59,10 @@
|
||||
},
|
||||
"presentation": {
|
||||
"clear": true
|
||||
},
|
||||
"icon": {
|
||||
"id": "discard",
|
||||
"tooltip": "Reset MCU"
|
||||
}
|
||||
},
|
||||
{
|
||||
@@ -71,6 +83,10 @@
|
||||
},
|
||||
"presentation": {
|
||||
"clear": true
|
||||
},
|
||||
"icon": {
|
||||
"id": "clear-all",
|
||||
"tooltip": "Erase MCU"
|
||||
}
|
||||
},
|
||||
{
|
||||
@@ -119,6 +135,10 @@
|
||||
},
|
||||
"presentation": {
|
||||
"clear": true
|
||||
},
|
||||
"icon": {
|
||||
"id": "code",
|
||||
"tooltip": "Build"
|
||||
}
|
||||
}
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||||
]
|
||||
|
@@ -27,6 +27,9 @@ set(TARGET_SRC
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||||
# Add new source files here
|
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Src/uart.c
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Src/led.c
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Src/uart_ring_buffer.c
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Src/command.c
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Src/i2c.c
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)
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||||
|
||||
# 设置输出目录
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||||
|
@@ -12,6 +12,7 @@
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"type": "FILEPATH",
|
||||
"value": "${sourceDir}/cmake/arm-none-eabi-gcc.cmake"
|
||||
}
|
||||
,"CMAKE_EXPORT_COMPILE_COMMANDS": "ON"
|
||||
},
|
||||
"architecture": {
|
||||
"value": "unspecified",
|
||||
|
@@ -1,6 +1,33 @@
|
||||
#ifndef BOARD_CONFIG_H
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#define BOARD_CONFIG_H
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|
||||
/* >>>>>>>>>>>>>>>>>>>>[RS485 PHY DEFINE]<<<<<<<<<<<<<<<<<<<< */
|
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|
||||
// #define RS485_MAX13487 // RS485 PHY : MAX13487 (AutoDir)
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#undef RS485_MAX13487 // RS485 PHY : SP3487 (no AutoDir)
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||||
|
||||
/* >>>>>>>>>>>>>>>>>>>>[IIC TYPE DEFINE]<<<<<<<<<<<<<<<<<<<< */
|
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|
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// #define SOFTWARE_IIC // IIC Type : Software IIC
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#undef SOFTWARE_IIC // IIC Type : Hardware IIC
|
||||
|
||||
/* >>>>>>>>>>>>>>>>>>>>[DEBUG ASSERTIONS DEFINE]<<<<<<<<<<<<<<<<<<<< */
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|
||||
// #define DEBUG_VERBOSE // Debug Assertions Status : Debug Verbose Information
|
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#undef DEBUG_VERBOSE // Debug Assertions Status : No Debug Verbose Information
|
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|
||||
/******************************************************************************/
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||||
|
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#define RCU_GPIO_I2C RCU_GPIOF
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#define RCU_I2C RCU_I2C0
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#define I2C_SCL_PORT GPIOF
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#define I2C_SCL_PIN GPIO_PIN_1
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#define I2C_SDA_PORT GPIOF
|
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#define I2C_SDA_PIN GPIO_PIN_0
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#define I2C_GPIO_AF GPIO_AF_1
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#define I2C_DEBUG_UART USART0
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||||
|
||||
/******************************************************************************/
|
||||
|
||||
#define LED_PORT GPIOA
|
||||
@@ -9,4 +36,16 @@
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||||
|
||||
/******************************************************************************/
|
||||
|
||||
#define RS485_RCU RCU_USART0
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#define RS485_GPIO_RCU RCU_GPIOA
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#define RS485_GPIO_PORT GPIOA
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#define RS485_TX_PIN GPIO_PIN_2
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#define RS485_RX_PIN GPIO_PIN_3
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#define RS485_PHY USART0
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#define RS485_BAUDRATE 115200U
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#define RS485_EN_PIN GPIO_PIN_1
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#define RS485_IRQ USART0_IRQn
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|
||||
/******************************************************************************/
|
||||
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||||
#endif //BOARD_CONFIG_H
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|
104
Inc/command.h
Normal file
104
Inc/command.h
Normal file
@@ -0,0 +1,104 @@
|
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/**
|
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* @file command.h
|
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* @brief 串口命令解析与处理模块接口声明。
|
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* @details 提供基于环形缓冲区的串口协议解析、命令处理及状态管理功能,
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* 支持格式为 D5 03 LEN [cmd] CRC 的命令帧解析与响应。
|
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*/
|
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#ifndef COMMAND_H
|
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#define COMMAND_H
|
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|
||||
#include <stdint.h>
|
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#include <stdbool.h>
|
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|
||||
/**
|
||||
* @defgroup Command 命令处理模块
|
||||
* @brief 串口命令解析与处理
|
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* @{
|
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*/
|
||||
|
||||
/** @brief 传感器周期上报使能标志 */
|
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extern volatile bool g_sensor_report_enabled;
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|
||||
/**
|
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* @section Command_Protocol 协议格式
|
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* 接收命令帧格式:
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* @code
|
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* [0] HEADER = 0xD5 // 包头标识
|
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* [1] BOARD_TYPE = 0x03 // 板卡类型标识
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* [2] LEN = 数据区字节数 // 有效载荷长度
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* [3..(3+LEN-1)] 数据 // 命令数据
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* [last] CRC // 校验码(从索引1累加到len-2的低8位)
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* @endcode
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*
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* 响应帧格式:
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* @code
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* [0] HEADER = 0xB5 // 响应包头
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* [1] TYPE // 响应类型(0xF0=成功,0xF1..=错误类型)
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* [2] LEN // 响应数据长度
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* [3..(3+LEN-1)] 数据 // 响应数据
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* [last] CRC // 校验码
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* @endcode
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*
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* @section Command_Usage 使用说明
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* 1) 初始化环形缓冲区:
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* @code{.c}
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* uart_ring_buffer_init();
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* @endcode
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*
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* 2) 在主循环中调用命令处理:
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* @code{.c}
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* while(1) {
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* command_process(); // 处理接收到的命令
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* // 其他业务逻辑
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* }
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* @endcode
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*
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* 3) 查询传感器上报状态:
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* @code{.c}
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* if(get_sensor_report_enabled()) {
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* // 执行传感器数据上报
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* }
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* @endcode
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||||
*/
|
||||
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||||
/**
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* @brief 获取传感器周期上报使能状态。
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* @return bool 上报状态。
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* @retval true 传感器周期上报已启用。
|
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* @retval false 传感器周期上报已禁用。
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* @ingroup Command
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||||
*/
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bool get_sensor_report_enabled(void);
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/**
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* @brief 设置传感器周期上报使能状态。
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* @param enabled 上报使能标志。
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* @arg true 启用传感器周期上报。
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* @arg false 禁用传感器周期上报。
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* @note 推荐通过此函数修改状态,便于后续功能扩展。
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* @ingroup Command
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*/
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void set_sensor_report_status(bool enabled);
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/**
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* @brief 处理串口环形缓冲区中的命令数据。
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* @details 基于状态机的非阻塞协议解析器,处理完整的命令帧并自动响应。
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||||
* 每次调用处理缓冲区中所有可用数据,遇到错误时自动重置状态机。
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||||
* @note 使用静态变量维护解析状态,函数不可重入。
|
||||
* @warning 依赖环形缓冲区正确实现,建议在主循环中周期调用。
|
||||
* @ingroup Command
|
||||
*/
|
||||
void command_process(void);
|
||||
|
||||
/**
|
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* @brief 解析并处理完整的命令帧。
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* @param cmd 指向完整命令帧的缓冲区(从包头0xD5开始)。
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* @param len 命令帧总长度(字节)。
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* @note 内部函数,由 command_process() 调用,一般不直接使用。
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* @ingroup Command
|
||||
*/
|
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void handle_command(const uint8_t *cmd, uint8_t len);
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/** @} */ // end of Command group
|
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|
||||
#endif // COMMAND_H
|
127
Inc/i2c.h
Normal file
127
Inc/i2c.h
Normal file
@@ -0,0 +1,127 @@
|
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//
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// Created by dell on 24-12-20.
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//
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|
||||
#ifndef I2C_H
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#define I2C_H
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|
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#include "gd32e23x_it.h"
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#include "gd32e23x.h"
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#include "systick.h"
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#include <stdbool.h>
|
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#include <string.h>
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#include <stdio.h>
|
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#include <stdlib.h>
|
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#include <math.h>
|
||||
|
||||
#include "board_config.h"
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||||
|
||||
/******************************************************************************/
|
||||
|
||||
#define I2C_SPEED 100000U /* 100kHz */
|
||||
#define I2C_TIME_OUT 5000U /* 5000 loops timeout */
|
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#define I2C_MAX_RETRY 3U /* Maximum retry attempts */
|
||||
#define I2C_DELAY_10US 10U /* Delay in microseconds for bus reset */
|
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#define I2C_RECOVERY_CLOCKS 9U /* Clock pulses for bus recovery */
|
||||
#define I2C_MASTER_ADDRESS 0x00U /* Master address (not used) */
|
||||
|
||||
/* Legacy compatibility */
|
||||
#define I2C_OK 1
|
||||
#define I2C_FAIL 0
|
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#define I2C_END 1
|
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|
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/******************************************************************************/
|
||||
|
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/* I2C result enumeration */
|
||||
typedef enum {
|
||||
I2C_RESULT_SUCCESS = 0, /* Operation successful */
|
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I2C_RESULT_TIMEOUT, /* Timeout occurred */
|
||||
I2C_RESULT_NACK, /* No acknowledge received */
|
||||
I2C_RESULT_BUS_BUSY, /* Bus is busy */
|
||||
I2C_RESULT_ERROR, /* General error */
|
||||
I2C_RESULT_INVALID_PARAM, /* Invalid parameter */
|
||||
I2C_RECOVERY_OK,
|
||||
I2C_RECOVERY_SDA_STUCK_LOW,
|
||||
I2C_RECOVERY_SCL_STUCK_LOW
|
||||
} i2c_result_t;
|
||||
|
||||
/* I2C state machine enumeration */
|
||||
typedef enum {
|
||||
I2C_STATE_IDLE = 0, /* Idle state */
|
||||
I2C_STATE_START, /* Generate start condition */
|
||||
I2C_STATE_SEND_ADDRESS, /* Send slave address */
|
||||
I2C_STATE_CLEAR_ADDRESS, /* Clear address flag */
|
||||
I2C_STATE_TRANSMIT_REG, /* Transmit register address */
|
||||
I2C_STATE_TRANSMIT_DATA, /* Transmit data */
|
||||
I2C_STATE_RESTART, /* Generate restart condition */
|
||||
I2C_STATE_RECEIVE_DATA, /* Receive data */
|
||||
I2C_STATE_STOP, /* Generate stop condition */
|
||||
I2C_STATE_ERROR, /* Error state */
|
||||
I2C_STATE_END
|
||||
} i2c_state_t;
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
|
||||
/* Function declarations */
|
||||
/*!
|
||||
\brief configure the I2C interface
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval i2c_result_t
|
||||
*/
|
||||
i2c_result_t i2c_config(void);
|
||||
|
||||
/*!
|
||||
\brief reset I2C bus with proper recovery
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval i2c_result_t
|
||||
*/
|
||||
i2c_result_t i2c_bus_reset(void);
|
||||
|
||||
/*!
|
||||
\brief scan I2C bus for devices
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
void i2c_scan(void);
|
||||
|
||||
/*!
|
||||
\brief write 16-bit data to I2C device
|
||||
\param[in] slave_addr: 7-bit slave address
|
||||
\param[in] reg_addr: register address
|
||||
\param[in] data: pointer to 2-byte data array
|
||||
\param[out] none
|
||||
\retval i2c_result_t
|
||||
*/
|
||||
i2c_result_t i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[2]);
|
||||
|
||||
/*!
|
||||
\brief read 16-bit data from I2C device
|
||||
\param[in] slave_addr: 7-bit slave address
|
||||
\param[in] reg_addr: register address
|
||||
\param[out] data: pointer to 2-byte data buffer
|
||||
\retval i2c_result_t
|
||||
*/
|
||||
i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data);
|
||||
|
||||
/*!
|
||||
\brief read 16-bit data from I2C device
|
||||
\param[in] slave_addr: 7-bit slave address
|
||||
\param[in] reg_addr: register address
|
||||
\param[out] data: pointer to 2-byte data buffer
|
||||
\retval i2c_result_t
|
||||
*/
|
||||
i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data);
|
||||
|
||||
/*!
|
||||
\brief get status string for debugging
|
||||
\param[in] status: i2c_result_t value
|
||||
\param[out] none
|
||||
\retval const char* status string
|
||||
*/
|
||||
const char* i2c_get_status_string(i2c_result_t status);
|
||||
|
||||
#endif //I2C_H
|
@@ -8,5 +8,6 @@ void led_init(void);
|
||||
void led_on(void);
|
||||
void led_off(void);
|
||||
void led_toggle(void);
|
||||
void led_heart_beat(void);
|
||||
|
||||
#endif // LED_H
|
||||
|
28
Inc/sensor_example.h
Normal file
28
Inc/sensor_example.h
Normal file
@@ -0,0 +1,28 @@
|
||||
//
|
||||
// Sensor Usage Example Header
|
||||
// 传感器使用示例头文件
|
||||
//
|
||||
|
||||
#ifndef SENSOR_EXAMPLE_H
|
||||
#define SENSOR_EXAMPLE_H
|
||||
|
||||
#include "gd32e23x.h"
|
||||
#include "board_config.h"
|
||||
|
||||
/*!
|
||||
\brief 传感器初始化示例
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
void sensors_init_example(void);
|
||||
|
||||
/*!
|
||||
\brief 传感器读取示例
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
void sensors_read_example(void);
|
||||
|
||||
#endif // SENSOR_EXAMPLE_H
|
52
Inc/soft_i2c.h
Normal file
52
Inc/soft_i2c.h
Normal file
@@ -0,0 +1,52 @@
|
||||
//
|
||||
// Created by dell on 24-12-28.
|
||||
//
|
||||
|
||||
#ifndef SOFT_I2C_H
|
||||
#define SOFT_I2C_H
|
||||
|
||||
#include "gd32e23x_it.h"
|
||||
#include "gd32e23x.h"
|
||||
#include "systick.h"
|
||||
|
||||
#include "board_config.h"
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
#define I2C_SCL_HIGH() gpio_bit_set(I2C_SCL_PORT, I2C_SCL_PIN)
|
||||
#define I2C_SCL_LOW() gpio_bit_reset(I2C_SCL_PORT, I2C_SCL_PIN)
|
||||
#define I2C_SDA_HIGH() gpio_bit_set(I2C_SDA_PORT, I2C_SDA_PIN)
|
||||
#define I2C_SDA_LOW() gpio_bit_reset(I2C_SDA_PORT, I2C_SDA_PIN)
|
||||
#define I2C_SDA_READ() gpio_input_bit_get(I2C_SDA_PORT, I2C_SDA_PIN)
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
#define SOFT_I2C_OK 1
|
||||
#define SOFT_I2C_FAIL 0
|
||||
#define SOFT_I2C_END 1
|
||||
|
||||
/******************************************************************************/
|
||||
|
||||
void soft_i2c_delay(void);
|
||||
|
||||
void soft_i2c_config(void);
|
||||
|
||||
void soft_i2c_start(void);
|
||||
|
||||
void soft_i2c_stop(void);
|
||||
|
||||
void soft_i2c_send_ack(void);
|
||||
|
||||
void soft_i2c_send_nack(void);
|
||||
|
||||
uint8_t soft_i2c_wait_ack(void);
|
||||
|
||||
void soft_i2c_send_byte(uint8_t data);
|
||||
|
||||
uint8_t soft_i2c_receive_byte(uint8_t ack);
|
||||
|
||||
uint8_t soft_i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[2]);
|
||||
|
||||
uint8_t soft_i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data);
|
||||
|
||||
#endif //SOFT_I2C_H
|
@@ -1,47 +1,36 @@
|
||||
/*!
|
||||
\file systick.h
|
||||
\brief the header file of systick
|
||||
|
||||
\version 2025-02-10, V2.4.0, demo for GD32E23x
|
||||
*/
|
||||
|
||||
/*
|
||||
Copyright (c) 2025, GigaDevice Semiconductor Inc.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without modification,
|
||||
are permitted provided that the following conditions are met:
|
||||
|
||||
1. Redistributions of source code must retain the above copyright notice, this
|
||||
list of conditions and the following disclaimer.
|
||||
2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
this list of conditions and the following disclaimer in the documentation
|
||||
and/or other materials provided with the distribution.
|
||||
3. Neither the name of the copyright holder nor the names of its contributors
|
||||
may be used to endorse or promote products derived from this software without
|
||||
specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||||
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
||||
OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/**
|
||||
* ************************************************************************
|
||||
*
|
||||
* @file systick.h
|
||||
* @author GD32
|
||||
* @brief
|
||||
*
|
||||
* ************************************************************************
|
||||
* @copyright Copyright (c) 2024 GD32
|
||||
* ************************************************************************
|
||||
*/
|
||||
#ifndef SYS_TICK_H
|
||||
#define SYS_TICK_H
|
||||
|
||||
#include <stdint.h>
|
||||
|
||||
/* function declarations */
|
||||
/* configure systick */
|
||||
void systick_config(void);
|
||||
|
||||
/* delay a time in 10 microseconds */
|
||||
void delay_10us(uint32_t count);
|
||||
|
||||
/* delay a time in milliseconds */
|
||||
void delay_ms(uint32_t count);
|
||||
/* delay decrement */
|
||||
|
||||
/* decrement delay counters */
|
||||
void delay_decrement(void);
|
||||
|
||||
#endif /* SYS_TICK_H */
|
||||
// /* delay function that doesn't interfere with SysTick interrupt */
|
||||
// void delay_ms_safe(uint32_t count);
|
||||
|
||||
// /* delay a time in microseconds (safe version) */
|
||||
// void delay_us_safe(uint32_t count);
|
||||
|
||||
#endif /* SYS_TICK_H */
|
10
Inc/uart.h
10
Inc/uart.h
@@ -3,14 +3,6 @@
|
||||
|
||||
#include "gd32e23x.h"
|
||||
|
||||
typedef enum {
|
||||
UART_PRINTF_USART0 = 0,
|
||||
UART_PRINTF_USART1 = 1,
|
||||
UART_PRINTF_BOTH = 2
|
||||
} uart_printf_port_t;
|
||||
|
||||
void uart0_init(uint32_t baudrate);
|
||||
void uart1_init(uint32_t baudrate);
|
||||
void uart_set_printf_port(uart_printf_port_t port);
|
||||
void rs485_init(void);
|
||||
|
||||
#endif // UART_H
|
||||
|
119
Inc/uart_ring_buffer.h
Normal file
119
Inc/uart_ring_buffer.h
Normal file
@@ -0,0 +1,119 @@
|
||||
/**
|
||||
* @file uart_ring_buffer.h
|
||||
* @brief 简单高效的环形接收缓冲区(字节队列)接口声明。
|
||||
* @details 提供字节写入/读取、可读长度查询、清空与丢弃统计等 API,
|
||||
* 适用于中断接收(写)与主循环解析(读)的典型嵌入式串口场景。
|
||||
*/
|
||||
#ifndef UART_RING_BUFFER_H
|
||||
#define UART_RING_BUFFER_H
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
/**
|
||||
* @def UART_RX_BUFFER_SIZE
|
||||
* @brief 接收环形缓冲区容量(单位:字节)。
|
||||
* @note 采用“预留一格”区分空/满策略,最大可用容量为 UART_RX_BUFFER_SIZE-1。
|
||||
*/
|
||||
#define UART_RX_BUFFER_SIZE 64
|
||||
|
||||
/**
|
||||
* @defgroup RingBuffer 环形缓冲区
|
||||
* @brief 字节环形缓冲区(接收端)
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* @section RingBuffer_Usage 使用说明
|
||||
* 典型用法:中断接收(写入环形缓冲)、主循环解析(读取环形缓冲)。
|
||||
*
|
||||
* 1) 初始化
|
||||
* @code{.c}
|
||||
* uart_ring_buffer_init();
|
||||
* @endcode
|
||||
*
|
||||
* 2) 使能串口接收非空中断(RBNE)并开启中断(以 USART0 为例)
|
||||
* @code{.c}
|
||||
* usart_interrupt_enable(USART0, USART_INT_RBNE);
|
||||
* nvic_irq_enable(USART0_IRQn, 2, 0); // 根据工程需要设置优先级
|
||||
* @endcode
|
||||
*
|
||||
* 3) 在中断服务函数中写入环形缓冲(参考你当前工程的写法)
|
||||
* @code{.c}
|
||||
* void USART0_IRQHandler(void) {
|
||||
* if (RESET != usart_interrupt_flag_get(USART0, USART_INT_FLAG_RBNE)) {
|
||||
* uint8_t data = usart_data_receive(USART0);
|
||||
* (void)uart_ring_buffer_put(data); // 缓冲满时丢弃并计数
|
||||
* }
|
||||
* }
|
||||
* @endcode
|
||||
*
|
||||
* 4) 在主循环中读取处理
|
||||
* @code{.c}
|
||||
* while (uart_ring_buffer_available() > 0) {
|
||||
* int b = uart_ring_buffer_get();
|
||||
* if (b >= 0) {
|
||||
* // 处理字节 b
|
||||
* }
|
||||
* }
|
||||
* @endcode
|
||||
*
|
||||
* @note 缓冲区满时新字节会被丢弃,可用 uart_ring_buffer_drop_count() 查看累计丢弃数。
|
||||
* @note 采用“预留一格”区分空/满,最大可用容量为 UART_RX_BUFFER_SIZE-1。
|
||||
*/
|
||||
|
||||
/**
|
||||
* @brief 初始化环形缓冲区。
|
||||
* @details 复位读/写索引与丢弃计数,准备接收数据。
|
||||
* @note 若在中断环境使用,初始化前建议关闭相关接收中断以避免并发竞争。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
void uart_ring_buffer_init(void);
|
||||
|
||||
/**
|
||||
* @brief 获取当前可读的字节数。
|
||||
* @details 返回范围为 [0, UART_RX_BUFFER_SIZE-1]。
|
||||
* @return 可读字节数(uint8_t)。
|
||||
* @note 预留一个空槽区分“空/满”,因此满时返回 UART_RX_BUFFER_SIZE-1。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
uint8_t uart_ring_buffer_available(void);
|
||||
|
||||
/**
|
||||
* @brief 从环形缓冲区读取一个字节。
|
||||
* @details 若缓冲区非空,返回队头字节并推进读指针;若为空,返回 -1。
|
||||
* @return 读取到的字节(0..255),或 -1 表示缓冲区为空。
|
||||
* @retval -1 缓冲区为空,无数据可读。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
int uart_ring_buffer_get(void);
|
||||
|
||||
/**
|
||||
* @brief 向环形缓冲区写入一个字节。
|
||||
* @param data 待写入的字节。
|
||||
* @return 是否写入成功。
|
||||
* @retval true 写入成功。
|
||||
* @retval false 写入失败(缓冲区已满,数据被丢弃并计数)。
|
||||
* @note 如需改为“覆盖写入”策略,可在满时先推进读指针再写入。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
bool uart_ring_buffer_put(uint8_t data);
|
||||
|
||||
/**
|
||||
* @brief 清空环形缓冲区。
|
||||
* @details 复位读/写索引与丢弃计数,相当于逻辑上丢弃所有已接收数据,不擦除数据区内容。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
void uart_ring_buffer_clear(void);
|
||||
|
||||
/**
|
||||
* @brief 获取因缓冲区满而被丢弃的字节累计数量。
|
||||
* @details 该计数在 init/clear 时清零。
|
||||
* @return 丢弃的累计字节数。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
uint32_t uart_ring_buffer_drop_count(void);
|
||||
|
||||
/** @} */
|
||||
|
||||
#endif // UART_RING_BUFFER_H
|
834
Src/command.c
Normal file
834
Src/command.c
Normal file
@@ -0,0 +1,834 @@
|
||||
/**
|
||||
* @file command.c
|
||||
* @brief 串口命令解析与处理模块实现
|
||||
* @details 实现基于状态机的协议解析器,支持 D5 03 LEN [cmd] CRC 格式的命令处理,
|
||||
* 包含命令帧解析、响应生成和传感器状态管理功能。
|
||||
* @author Hulk
|
||||
* @date 2025-08-13
|
||||
* @version 1.0.0
|
||||
* @ingroup Command
|
||||
*/
|
||||
|
||||
#include "command.h"
|
||||
#include "uart_ring_buffer.h"
|
||||
#include "led.h"
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdio.h>
|
||||
#include "board_config.h"
|
||||
#include "gd32e23x_usart.h"
|
||||
|
||||
/* ============================================================================
|
||||
* 协议格式说明
|
||||
* ============================================================================ */
|
||||
|
||||
/**
|
||||
* @name 协议帧格式
|
||||
* @{
|
||||
* @details
|
||||
* Host -> Device 命令帧格式:
|
||||
* [0] HEADER = 0xD5 // 包头标识
|
||||
* [1] BOARD_TYPE = 0x03 // 板卡类型标识
|
||||
* [2] LEN = 数据区字节数 // 有效载荷长度
|
||||
* [3..(3+LEN-1)] 数据 // 命令数据,如 "M1", "M2S123"
|
||||
* [last] CRC = 校验码 // 从索引1到(last-1)的累加和低8位
|
||||
*
|
||||
* 最小协议包长度为 6 字节
|
||||
* 数据示例(两字节命令):"M1" / "M2" / "M3"
|
||||
*
|
||||
* Device -> Host 响应帧格式:
|
||||
* [0] 0xB5 // 响应包头
|
||||
* [1] TYPE // 响应类型(0xF0=成功,0xF1..=错误类型)
|
||||
* [2] LEN // 响应数据长度
|
||||
* [3..(3+LEN-1)] 数据 // 响应数据,如 "ok", "err"
|
||||
* [last] CRC // 校验码(同命令帧规则)
|
||||
* @}
|
||||
*/
|
||||
|
||||
/* ============================================================================
|
||||
* 协议常量定义
|
||||
* ============================================================================ */
|
||||
|
||||
/** @name 协议帧标识符
|
||||
* @{ */
|
||||
#define PROTOCOL_PACKAGE_HEADER 0xD5 /**< 命令帧包头标识 */
|
||||
#define PROTOCOL_BOARD_TYPE 0x03 /**< 板卡类型标识 */
|
||||
/** @} */
|
||||
|
||||
/** @name 命令长度限制
|
||||
* @{ */
|
||||
#define COMMAND_MIN_LEN 2 /**< 最小命令长度,如"M1" */
|
||||
#define PROTOCOL_MIN_FRAME_LEN (3 + COMMAND_MIN_LEN + 1) /**< 最小完整帧长度:header+type+len+payload+crc = 6 */
|
||||
#define PROTOCOL_MAX_FRAME_LEN 16 /**< 最大完整帧长度 */
|
||||
/** @} */
|
||||
|
||||
/** @name 响应帧标识符
|
||||
* @{ */
|
||||
#define RESP_HEADER 0xB5 /**< 响应帧包头标识 */
|
||||
#define RESP_TYPE_OK 0xF0 /**< 成功响应类型 */
|
||||
#define RESP_TYPE_CRC_ERR 0xF1 /**< CRC校验错误 */
|
||||
#define RESP_TYPE_HEADER_ERR 0xF2 /**< 包头错误 */
|
||||
#define RESP_TYPE_TYPE_ERR 0xF3 /**< 类型错误 */
|
||||
#define RESP_TYPE_LEN_ERR 0xF4 /**< 长度错误 */
|
||||
/** @} */
|
||||
|
||||
/* ============================================================================
|
||||
* 模块内部变量
|
||||
* ============================================================================ */
|
||||
|
||||
/** @brief 传感器周期上报使能标志 */
|
||||
volatile bool g_sensor_report_enabled = false;
|
||||
|
||||
/** @name 预设响应数据
|
||||
* @{ */
|
||||
static const uint8_t s_report_status_ok[] = { 'o', 'k' }; /**< 成功响应数据 */
|
||||
static const uint8_t s_report_status_err[] = { 'e','r','r' }; /**< 错误响应数据 */
|
||||
/** @} */
|
||||
|
||||
/* ============================================================================
|
||||
* 公共接口函数
|
||||
* ============================================================================ */
|
||||
|
||||
/**
|
||||
* @brief 查询是否启用周期性传感器上报。
|
||||
* @return true 表示启用;false 表示禁用。
|
||||
* @ingroup Command
|
||||
*/
|
||||
bool get_sensor_report_enabled(void)
|
||||
{
|
||||
return g_sensor_report_enabled;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 设置是否启用周期性传感器上报标志。
|
||||
* @details 本模块内部保存的布尔状态,供其他逻辑决定是否进行周期性数据上报;
|
||||
* 推荐通过本函数修改而非直接访问全局/静态变量,以便后续扩展(如加锁/回调)。
|
||||
* @param status true 启用周期上报;false 禁用。
|
||||
* @ingroup Command
|
||||
*/
|
||||
void set_sensor_report_status(bool status)
|
||||
{
|
||||
g_sensor_report_enabled = status;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 计算协议包的 8 位累加校验值(Checksum)。
|
||||
* @details 对输入缓冲区逐字节累加并取低 8 位,累加范围为 data[1] 至 data[len-2],
|
||||
* 即不包含包头 HEADER(索引 0)与尾部 CRC 字节(索引 len-1)。
|
||||
* 当 len 小于最小协议帧长度(PACKAGE_MIN_LENGTH)时返回 0。
|
||||
* @param data 指向待校验的完整协议包缓冲区。
|
||||
* @param len 缓冲区总长度(字节),应满足 header + type + len + payload + crc 的最小格式。
|
||||
* @return uint8_t 计算得到的 8 位校验值。
|
||||
* @note 本函数实现为简单求和校验(Checksum),非多项式 CRC;与本协议“从索引 1 累加到 len-2”的规则一致。
|
||||
* @ingroup Command
|
||||
*/
|
||||
static uint8_t command_sum_crc_calc(const uint8_t *data, uint8_t len)
|
||||
{
|
||||
uint16_t crc = 0;
|
||||
// 仅在满足协议最小帧长时计算(header + type + len + payload + crc)
|
||||
if (len < PROTOCOL_MIN_FRAME_LEN) return 0;
|
||||
|
||||
// 累加从索引 1 到 len-2 的字节(不含 header 和 crc 字节)
|
||||
for (uint8_t i = 1; i < (len - 1); i++)
|
||||
{
|
||||
crc += data[i];
|
||||
}
|
||||
return (uint8_t)(crc & 0xFF);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 发送协议响应帧(使用GD32E230标准库)。
|
||||
* @details 构造并发送格式为 B5 TYPE LEN [payload] CRC 的响应帧,
|
||||
* 自动计算CRC校验值并通过串口输出。
|
||||
* @param type 响应类型码(如 RESP_TYPE_OK, RESP_TYPE_CRC_ERR 等)。
|
||||
* @param payload 指向响应数据的缓冲区,当len为0时可为NULL。
|
||||
* @param len 响应数据长度(字节),为0时不复制payload数据。
|
||||
* @note 内部使用固定大小缓冲区,超长响应将被丢弃。
|
||||
* @warning 使用GD32E230标准库函数发送,确保串口已正确初始化。
|
||||
* @ingroup Command
|
||||
*/
|
||||
static void send_response(uint8_t type, const uint8_t *payload, uint8_t len)
|
||||
{
|
||||
uint8_t buf_len = (uint8_t)(3 + len + 1);
|
||||
uint8_t buf[16]; // 简单场景足够,必要时可增大
|
||||
if (buf_len > sizeof(buf)) return; // 防御
|
||||
|
||||
buf[0] = RESP_HEADER;
|
||||
buf[1] = type;
|
||||
buf[2] = len;
|
||||
|
||||
// 简化逻辑:只有当len > 0且payload非空时才复制数据
|
||||
if (len > 0 && payload != NULL) {
|
||||
for (uint8_t i = 0; i < len; i++) {
|
||||
buf[3 + i] = payload[i];
|
||||
}
|
||||
}
|
||||
|
||||
buf[buf_len - 1] = command_sum_crc_calc(buf, buf_len);
|
||||
|
||||
// 使用GD32E230标准库函数逐字节发送(标准库实现)
|
||||
for (uint8_t i = 0; i < buf_len; i++) {
|
||||
// 等待发送缓冲区空
|
||||
while (usart_flag_get(RS485_PHY, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(RS485_PHY, buf[i]);
|
||||
}
|
||||
|
||||
// 等待发送完成
|
||||
while (usart_flag_get(RS485_PHY, USART_FLAG_TC) == RESET) {}
|
||||
|
||||
// // 使用printf发送(通过重定向到串口)
|
||||
// for (uint8_t i = 0; i < buf_len; i++) {
|
||||
// printf("%c", buf[i]);
|
||||
// }
|
||||
|
||||
// // 刷新缓冲区
|
||||
// fflush(stdout);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 判断字符是否为十进制数字字符。
|
||||
* @param c 待检查的字符(ASCII码值)。
|
||||
* @return bool 判断结果。
|
||||
* @retval true 字符为 '0' 到 '9' 之间的数字字符。
|
||||
* @retval false 字符不是十进制数字字符。
|
||||
* @ingroup Command
|
||||
*/
|
||||
static inline bool is_dec_digit(uint8_t c) { return (c >= '0' && c <= '9'); }
|
||||
|
||||
/**
|
||||
* @brief 从缓冲区解析十进制无符号整数。
|
||||
* @details 从指定位置开始连续读取十进制数字字符,累加构成32位无符号整数。
|
||||
* 遇到非数字字符或到达长度限制时停止解析。
|
||||
* @param s 指向待解析字符缓冲区的起始位置。
|
||||
* @param n 允许解析的最大字符数。
|
||||
* @param out 输出参数,存储解析结果,可为NULL。
|
||||
* @return uint8_t 实际消耗的字符数。
|
||||
* @retval 0 首字符不是数字,解析失败。
|
||||
* @retval >0 成功解析的数字字符个数。
|
||||
* @note 不处理符号、空白字符或进制前缀。
|
||||
* @warning 不进行溢出检查,超出uint32_t范围时按无符号算术溢出处理。
|
||||
* @ingroup Command
|
||||
*/
|
||||
static uint8_t parse_uint_dec(const uint8_t *s, uint8_t n, uint32_t *out)
|
||||
{
|
||||
uint8_t i = 0;
|
||||
uint32_t v = 0;
|
||||
while (i < n && is_dec_digit(s[i]))
|
||||
{
|
||||
v = v * 10u + (uint32_t)(s[i] - '0');
|
||||
i++;
|
||||
}
|
||||
if (i == 0) return 0; // 未读到数字
|
||||
if (out) *out = v; //
|
||||
return i;
|
||||
}
|
||||
|
||||
/* ============================================================================
|
||||
* 命令处理函数
|
||||
* ============================================================================ */
|
||||
|
||||
/**
|
||||
* @brief 解析并处理完整的命令帧。
|
||||
* @details 处理经过协议校验的完整命令帧,支持以下命令格式:
|
||||
* - 无参数命令:M<数字>(如 M1、M2、M10、M201)
|
||||
* - 带参数命令:M<数字>S<参数>(如 M100S123,参数为十进制)
|
||||
*
|
||||
* 支持的命令:
|
||||
* - M1: 启用传感器上报
|
||||
* - M2: 禁用传感器上报
|
||||
* - M100S<value>: 设置PWM值(示例)
|
||||
*
|
||||
* @param frame 指向完整命令帧的缓冲区(从包头0xD5开始)。
|
||||
* @param len 命令帧总长度(字节)。
|
||||
* @note 函数内部进行帧格式校验,格式错误时自动发送错误响应。
|
||||
* @warning 假设输入帧已通过基本协议校验(包头、类型、CRC等)。
|
||||
* @ingroup Command
|
||||
*/
|
||||
void handle_command(const uint8_t *frame, uint8_t len) {
|
||||
// 帧格式:D5 03 LEN [cmd] CRC; cmd 支持变长,如 "M1"、"M10"、"M201"、"M123S400",有最小长度限制和命令长度校验
|
||||
uint8_t cmd_len = frame[2];
|
||||
if (len < PROTOCOL_MIN_FRAME_LEN || (uint8_t)(3 + cmd_len + 1) != len) return; // 长度不匹配或者小于最小限制
|
||||
|
||||
const uint8_t *cmd = &frame[3]; // 提取命令部分
|
||||
|
||||
// 命令必须以 'M' 开头
|
||||
if (cmd[0] != 'M'){
|
||||
send_response(RESP_TYPE_TYPE_ERR, s_report_status_err, sizeof(s_report_status_err));
|
||||
return;
|
||||
}
|
||||
|
||||
// 从 'M' 后开始解析
|
||||
uint8_t cmd_index = 1;
|
||||
// 解析M后的十进制数,即命令本体
|
||||
uint32_t base_cmd = 0;
|
||||
uint8_t used_base_cmd = parse_uint_dec(&cmd[cmd_index], (cmd_len - cmd_index), &base_cmd);
|
||||
if (used_base_cmd == 0)
|
||||
{
|
||||
// 'M' 后没有数字,格式错误
|
||||
send_response(RESP_TYPE_LEN_ERR, s_report_status_err, sizeof(s_report_status_err));
|
||||
return;
|
||||
}
|
||||
|
||||
cmd_index = (uint8_t)(cmd_index + used_base_cmd); // 更新索引到命令后
|
||||
|
||||
// 情况A:无附加参数的基础命令
|
||||
if (cmd_index == cmd_len) {
|
||||
// 仅基础命令,如 M1, M2, M3
|
||||
switch (base_cmd) {
|
||||
case 1u: // M1: enable sensor report
|
||||
set_sensor_report_status(true);
|
||||
send_response(RESP_TYPE_OK, s_report_status_ok, sizeof(s_report_status_ok));
|
||||
return;
|
||||
case 2u: // M2: disable sensor report
|
||||
set_sensor_report_status(false);
|
||||
send_response(RESP_TYPE_OK, s_report_status_ok, sizeof(s_report_status_ok));
|
||||
return;
|
||||
|
||||
// 示例:M3、M10、M201、M100 等(按需添加)
|
||||
// case 3u: // M3命令 - 高电流驱动测试
|
||||
// /**
|
||||
// * M3命令:使用更高驱动电流测试线圈响应
|
||||
// * 响应格式:6字节状态信息
|
||||
// *
|
||||
// * 响应数据解析:
|
||||
// * [0-1]: 传感器状态寄存器(大端序)
|
||||
// * bit[15-8]: 预留
|
||||
// * bit[7]: DRDY_1 - 通道1数据就绪
|
||||
// * bit[6]: DRDY_0 - 通道0数据就绪
|
||||
// * bit[5]: UNREAD_CONV - 未读转换结果
|
||||
// * bit[4]: ERR_ZC - 零计数错误
|
||||
// * bit[3]: ERR_AE - 幅度错误(重点关注)
|
||||
// * bit[2]: ERR_WD - 看门狗超时
|
||||
// * bit[1]: ERR_OR - 过量程错误
|
||||
// * bit[0]: ERR_UR - 欠量程错误
|
||||
// * [2]: 数据就绪标志 (0x01=就绪, 0x00=未就绪)
|
||||
// * [3]: 0xA0 - 高电流测试标记
|
||||
// * [4]: 幅度错误专用标志 (0xAE=有幅度错误, 0x00=无)
|
||||
// * [5]: 0x33 - M3命令标记
|
||||
// *
|
||||
// * 分析要点:
|
||||
// * - 如果[0-1]从0x0008变为其他值,说明高电流有效果
|
||||
// * - 如果[2]变为0x01,说明数据开始就绪
|
||||
// * - 如果[4]变为0x00,说明幅度错误消失
|
||||
// */
|
||||
// // 重置传感器
|
||||
// ldc1612_reset_sensor();
|
||||
// delay_ms(50);
|
||||
|
||||
// // 使用更高的驱动电流重新配置
|
||||
// // ldc1612_write_register(SET_DRIVER_CURRENT_REG, 0xA000);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 重新配置其他参数
|
||||
// ldc1612_config_single_channel(CHANNEL_0);
|
||||
// delay_ms(200); // 更长稳定时间
|
||||
|
||||
// // 检查结果
|
||||
// uint16_t status_m3 = ldc1612_get_sensor_status();
|
||||
// bool ready_m3 = ldc1612_is_data_ready(CHANNEL_0);
|
||||
|
||||
// uint8_t m3_info[6];
|
||||
// m3_info[0] = (uint8_t)(status_m3 >> 8);
|
||||
// m3_info[1] = (uint8_t)(status_m3 & 0xFF);
|
||||
// m3_info[2] = ready_m3 ? 0x01 : 0x00;
|
||||
// m3_info[3] = 0xA0; // 高电流标记
|
||||
// m3_info[4] = (status_m3 & 0x0008) ? 0xAE : 0x00; // 幅度错误标志
|
||||
// m3_info[5] = 0x33; // M3命令标记
|
||||
|
||||
// send_response(RESP_TYPE_OK, m3_info, sizeof(m3_info));
|
||||
// return;
|
||||
// case 4u: // M4命令 - 寄存器诊断
|
||||
// /**
|
||||
// * M4命令:读取关键寄存器进行配置诊断
|
||||
// * 响应格式:8字节寄存器信息
|
||||
// *
|
||||
// * 响应数据解析:
|
||||
// * [0-1]: 状态寄存器 (0x18) - 当前传感器状态
|
||||
// * [2-3]: 传感器配置寄存器 (0x1A) - 传感器工作模式
|
||||
// * 期望值: 0x1601 (活动模式,单通道)
|
||||
// * [4-5]: 驱动电流寄存器 (0x1E) - 当前驱动电流设置
|
||||
// * 常见值: 0x9000(默认), 0xA000(高), 0xF800(最高)
|
||||
// * [6]: I2C读取状态 (0x4F='O'=成功, 0xEE=失败)
|
||||
// * [7]: 0x44 - M4命令标记
|
||||
// *
|
||||
// * 分析要点:
|
||||
// * - [2-3]应该是0x1601,如果不是说明配置异常
|
||||
// * - [4-5]显示实际的驱动电流设置
|
||||
// * - [6]必须是0x4F,否则I2C通信有问题
|
||||
// */
|
||||
// // 简化版本,只读取最关键的寄存器,避免I2C超时
|
||||
// uint16_t status_reg = ldc1612_get_sensor_status(); // 0x18
|
||||
|
||||
// // 逐一安全读取关键寄存器
|
||||
// uint8_t data_buf[2] = {0};
|
||||
// uint16_t sensor_config = 0;
|
||||
// uint16_t drive_current = 0;
|
||||
|
||||
// // 尝试读取传感器配置寄存器
|
||||
// bool result1_ok = (LDC1612_IIC_READ_16BITS(LDC1612_ADDR, SENSOR_CONFIG_REG, data_buf) == I2C_RESULT_SUCCESS);
|
||||
// if (result1_ok) {
|
||||
// sensor_config = (data_buf[0] << 8) | data_buf[1];
|
||||
// }
|
||||
|
||||
// // 尝试读取驱动电流寄存器
|
||||
// bool result2_ok = (LDC1612_IIC_READ_16BITS(LDC1612_ADDR, SET_DRIVER_CURRENT_REG, data_buf) == I2C_RESULT_SUCCESS);
|
||||
// if (result2_ok) {
|
||||
// drive_current = (data_buf[0] << 8) | data_buf[1];
|
||||
// }
|
||||
|
||||
// // 构造8字节简化诊断信息
|
||||
// uint8_t diag_info[8];
|
||||
// diag_info[0] = (uint8_t)(status_reg >> 8); // 状态寄存器高位
|
||||
// diag_info[1] = (uint8_t)(status_reg & 0xFF); // 状态寄存器低位
|
||||
// diag_info[2] = (uint8_t)(sensor_config >> 8); // 传感器配置寄存器高位
|
||||
// diag_info[3] = (uint8_t)(sensor_config & 0xFF); // 传感器配置寄存器低位
|
||||
// diag_info[4] = (uint8_t)(drive_current >> 8); // 驱动电流寄存器高位
|
||||
// diag_info[5] = (uint8_t)(drive_current & 0xFF); // 驱动电流寄存器低位
|
||||
// diag_info[6] = (result1_ok && result2_ok) ? 0x4F : 0xEE; // I2C状态
|
||||
// diag_info[7] = 0x44; // M4命令标记
|
||||
|
||||
// send_response(RESP_TYPE_OK, diag_info, sizeof(diag_info));
|
||||
// return;
|
||||
// case 5u: // M5命令 - 最高电流启动测试
|
||||
// // 命令: D5 03 02 4D 35 87
|
||||
// // 响应: B5 F0 08 [状态2字节][就绪标志][电流设置2字节][幅度错误标志][M5标记][最高电流标记] CRC
|
||||
// // 响应格式:
|
||||
// // [0-1]: 传感器状态寄存器(启动后状态)
|
||||
// // [2]: 数据就绪标志 (0x01=就绪, 0x00=未就绪)
|
||||
// // [3-4]: 实际驱动电流设置值(应该是0xF800)
|
||||
// // [5]: 幅度错误专用标志 (0xAE=仍有错误, 0x00=错误消失)
|
||||
// // [6]: 0x55 - M5命令标记
|
||||
// // [7]: 0xF8 - 最高电流标记
|
||||
// // 重置传感器
|
||||
// ldc1612_reset_sensor();
|
||||
// delay_ms(100);
|
||||
|
||||
// // 使用最高驱动电流并固定配置
|
||||
// // ldc1612_write_register(SET_DRIVER_CURRENT_REG, 0xF800);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 手动配置其他必要寄存器,避免被覆盖
|
||||
// // 配置频率分频器为较低频率 (更容易起振)
|
||||
// uint8_t freq_data[2] = {0x10, 0x00}; // 较低分频
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_FREQ_REG_START + CHANNEL_0, freq_data);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 设置较长的LC稳定时间
|
||||
// uint8_t lc_data[2] = {0x04, 0x00}; // 更长稳定时间
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_LC_STABILIZE_REG_START + CHANNEL_0, lc_data);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 配置MUX为单通道模式
|
||||
// // ldc1612_configure_mux_register(0, CHANNEL_0, LDC1612_MUX_RR_SEQUENCE_1, LDC1612_MUX_FILTER_1MHz);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 启动传感器
|
||||
// uint8_t sensor_cfg_data[2] = {0x16, 0x01}; // 活动模式,单通道
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SENSOR_CONFIG_REG, sensor_cfg_data);
|
||||
// delay_ms(200); // 更长稳定时间
|
||||
|
||||
// // 读取结果
|
||||
// uint16_t status_m5 = ldc1612_get_sensor_status();
|
||||
// bool ready_m5 = ldc1612_is_data_ready(CHANNEL_0);
|
||||
|
||||
// // 再次确认驱动电流设置
|
||||
// uint8_t curr_data[2];
|
||||
// LDC1612_IIC_READ_16BITS(LDC1612_ADDR, SET_DRIVER_CURRENT_REG, curr_data);
|
||||
// uint16_t actual_current = (curr_data[0] << 8) | curr_data[1];
|
||||
|
||||
// uint8_t m5_info[8];
|
||||
// m5_info[0] = (uint8_t)(status_m5 >> 8);
|
||||
// m5_info[1] = (uint8_t)(status_m5 & 0xFF);
|
||||
// m5_info[2] = ready_m5 ? 0x01 : 0x00;
|
||||
// m5_info[3] = (uint8_t)(actual_current >> 8); // 实际电流设置高位
|
||||
// m5_info[4] = (uint8_t)(actual_current & 0xFF); // 实际电流设置低位
|
||||
// m5_info[5] = (status_m5 & 0x0008) ? 0xAE : 0x00; // 幅度错误标志
|
||||
// m5_info[6] = 0x55; // M5命令标记
|
||||
// m5_info[7] = 0xF8; // 最高电流标记
|
||||
|
||||
// send_response(RESP_TYPE_OK, m5_info, sizeof(m5_info));
|
||||
// return;
|
||||
// case 6u: // M6命令 - 芯片功能验证
|
||||
// // 命令: D5 03 02 4D 36 88
|
||||
// // 响应: B5 F0 0C [写入值2字节][读取值2字节][制造商ID2字节][设备ID2字节][状态2字节][ID读取状态][M6标记] CRC
|
||||
// // 响应格式:
|
||||
// // [0-1]: 写入测试值 (0x9000)
|
||||
// // [2-3]: 读取回的值
|
||||
// // [4-5]: 制造商ID (应该是0x5449="TI")
|
||||
// // [6-7]: 设备ID (应该是0x3055)
|
||||
// // [8-9]: 当前状态寄存器
|
||||
// // [10]: ID读取状态 (0x4F=成功, 0xEE=失败)
|
||||
// // [11]: 0x66 - M6命令标记
|
||||
// // 测试1: 写入和读取特定值到驱动电流寄存器
|
||||
// uint8_t test_current_data[2] = {0x90, 0x00}; // 写入0x9000
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_DRIVER_CURRENT_REG, test_current_data);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 读取验证
|
||||
// uint8_t read_current_data[2];
|
||||
// LDC1612_IIC_READ_16BITS(LDC1612_ADDR, SET_DRIVER_CURRENT_REG, read_current_data);
|
||||
// uint16_t read_current = (read_current_data[0] << 8) | read_current_data[1];
|
||||
|
||||
// // 测试2: 读取制造商ID和设备ID
|
||||
// uint8_t manufacturer_data[2];
|
||||
// uint8_t device_data[2];
|
||||
// bool id_read_ok = true;
|
||||
|
||||
// if (LDC1612_IIC_READ_16BITS(LDC1612_ADDR, 0x7E, manufacturer_data) != I2C_RESULT_SUCCESS) {
|
||||
// id_read_ok = false;
|
||||
// }
|
||||
// if (LDC1612_IIC_READ_16BITS(LDC1612_ADDR, 0x7F, device_data) != I2C_RESULT_SUCCESS) {
|
||||
// id_read_ok = false;
|
||||
// }
|
||||
|
||||
// uint16_t manufacturer_id = id_read_ok ? ((manufacturer_data[0] << 8) | manufacturer_data[1]) : 0x0000;
|
||||
// uint16_t device_id = id_read_ok ? ((device_data[0] << 8) | device_data[1]) : 0x0000;
|
||||
|
||||
// // 测试3: 检查当前状态
|
||||
// uint16_t current_status = ldc1612_get_sensor_status();
|
||||
|
||||
// // 构造12字节测试结果
|
||||
// uint8_t test_info[12];
|
||||
// test_info[0] = 0x90; // 写入的值高位
|
||||
// test_info[1] = 0x00; // 写入的值低位
|
||||
// test_info[2] = (uint8_t)(read_current >> 8); // 读取的值高位
|
||||
// test_info[3] = (uint8_t)(read_current & 0xFF); // 读取的值低位
|
||||
// test_info[4] = (uint8_t)(manufacturer_id >> 8);
|
||||
// test_info[5] = (uint8_t)(manufacturer_id & 0xFF);
|
||||
// test_info[6] = (uint8_t)(device_id >> 8);
|
||||
// test_info[7] = (uint8_t)(device_id & 0xFF);
|
||||
// test_info[8] = (uint8_t)(current_status >> 8);
|
||||
// test_info[9] = (uint8_t)(current_status & 0xFF);
|
||||
// test_info[10] = id_read_ok ? 0x4F : 0xEE; // ID读取状态
|
||||
// test_info[11] = 0x66; // M6命令标记
|
||||
|
||||
// send_response(RESP_TYPE_OK, test_info, sizeof(test_info));
|
||||
// return;
|
||||
// case 7u: // M7命令 - 保守参数测试
|
||||
// // 命令: D5 03 02 4D 37 89
|
||||
// // 响应: B5 F0 0A [状态2字节][就绪标志][频率设置2字节][幅度错误标志][欠量程错误标志][过量程错误标志][M7标记][低频标记] CRC
|
||||
// // 响应格式:
|
||||
// // [0-1]: 状态寄存器
|
||||
// // [2]: 数据就绪标志
|
||||
// // [3-4]: 实际频率分频器设置 (0x2000=较低频率)
|
||||
// // [5]: 幅度错误标志 (0xAE=有错误, 0x00=无)
|
||||
// // [6]: 欠量程错误标志 (0x01=有, 0x00=无)
|
||||
// // [7]: 过量程错误标志 (0x02=有, 0x00=无)
|
||||
// // [8]: 0x77 - M7命令标记
|
||||
// // [9]: 0x20 - 低频标记
|
||||
// // 重置传感器
|
||||
// ldc1612_reset_sensor();
|
||||
// delay_ms(100);
|
||||
|
||||
// // 使用保守的配置尝试启动线圈
|
||||
// // 1. 设置最高驱动电流
|
||||
// uint8_t drive_data[2] = {0xF8, 0x00}; // 最高电流
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_DRIVER_CURRENT_REG, drive_data);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 2. 设置较低的频率分频器(适合更大电感值)
|
||||
// uint8_t freq_low_data[2] = {0x20, 0x00}; // 更低频率
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_FREQ_REG_START + CHANNEL_0, freq_low_data);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 3. 设置更长的LC稳定时间
|
||||
// uint8_t lc_stable_data[2] = {0x08, 0x00}; // 更长稳定时间
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_LC_STABILIZE_REG_START + CHANNEL_0, lc_stable_data);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 4. 设置更长的转换时间
|
||||
// uint8_t conv_time_data[2] = {0x04, 0x00}; // 更长转换时间
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_CONVERSION_TIME_REG_START + CHANNEL_0, conv_time_data);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 5. 设置转换偏移
|
||||
// uint8_t conv_offset_data[2] = {0x00, 0x00};
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_CONVERSION_OFFSET_REG_START + CHANNEL_0, conv_offset_data);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 6. 配置错误寄存器 - 降低错误敏感度
|
||||
// uint8_t error_config_data[2] = {0x00, 0x00}; // 允许所有错误
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, ERROR_CONFIG_REG, error_config_data);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 7. 配置MUX寄存器
|
||||
// // ldc1612_configure_mux_register(0, CHANNEL_0, LDC1612_MUX_RR_SEQUENCE_1, LDC1612_MUX_FILTER_1MHz);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 8. 启动传感器
|
||||
// uint8_t sensor_start_data[2] = {0x16, 0x01}; // 活动模式
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SENSOR_CONFIG_REG, sensor_start_data);
|
||||
// delay_ms(500); // 给予充分时间稳定
|
||||
|
||||
// // 检查结果
|
||||
// uint16_t status_m7 = ldc1612_get_sensor_status();
|
||||
// bool ready_m7 = ldc1612_is_data_ready(CHANNEL_0);
|
||||
|
||||
// // 读取实际配置的频率分频器确认
|
||||
// uint8_t freq_readback[2];
|
||||
// LDC1612_IIC_READ_16BITS(LDC1612_ADDR, SET_FREQ_REG_START + CHANNEL_0, freq_readback);
|
||||
// uint16_t freq_actual = (freq_readback[0] << 8) | freq_readback[1];
|
||||
|
||||
// uint8_t m7_info[10];
|
||||
// m7_info[0] = (uint8_t)(status_m7 >> 8);
|
||||
// m7_info[1] = (uint8_t)(status_m7 & 0xFF);
|
||||
// m7_info[2] = ready_m7 ? 0x01 : 0x00;
|
||||
// m7_info[3] = (uint8_t)(freq_actual >> 8); // 实际频率分频器
|
||||
// m7_info[4] = (uint8_t)(freq_actual & 0xFF);
|
||||
// m7_info[5] = (status_m7 & 0x0008) ? 0xAE : 0x00; // 幅度错误
|
||||
// m7_info[6] = (status_m7 & 0x0001) ? 0x01 : 0x00; // 欠量程错误
|
||||
// m7_info[7] = (status_m7 & 0x0002) ? 0x02 : 0x00; // 过量程错误
|
||||
// m7_info[8] = 0x77; // M7命令标记
|
||||
// m7_info[9] = 0x20; // 低频标记
|
||||
|
||||
// send_response(RESP_TYPE_OK, m7_info, sizeof(m7_info));
|
||||
// return;
|
||||
// case 8u: // M8命令 - 极端参数测试
|
||||
// // 命令: D5 03 02 4D 38 8A
|
||||
// // 响应: B5 F0 06 [状态2字节][就绪标志][幅度错误标志][M8标记][极端测试标记] CRC
|
||||
// // 响应格式:
|
||||
// // [0-1]: 传感器状态寄存器
|
||||
// // [2]: 数据就绪标志 (0x01=就绪, 0x00=未就绪)
|
||||
// // [3]: 幅度错误标志 (0xAE=仍有错误, 0x00=错误消失)
|
||||
// // [4]: 0x88 - M8命令标记
|
||||
// // [5]: 0xEE - 极端测试标记
|
||||
// {
|
||||
// // 重置传感器
|
||||
// ldc1612_reset_sensor();
|
||||
// delay_ms(100);
|
||||
|
||||
// // 极端配置1: 极低频率
|
||||
// uint8_t extreme_freq[2] = {0x40, 0x00};
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_FREQ_REG_START + CHANNEL_0, extreme_freq);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 极端配置2: 最大驱动电流
|
||||
// uint8_t max_drive[2] = {0xFF, 0x00};
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_DRIVER_CURRENT_REG, max_drive);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 极端配置3: 禁用错误检测
|
||||
// uint8_t no_errors[2] = {0x00, 0x00};
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, ERROR_CONFIG_REG, no_errors);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 启动传感器
|
||||
// uint8_t start_data[2] = {0x16, 0x01};
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SENSOR_CONFIG_REG, start_data);
|
||||
// delay_ms(1000); // 等待1秒
|
||||
|
||||
// // 读取状态
|
||||
// uint16_t status_8 = ldc1612_get_sensor_status();
|
||||
// bool ready_8 = ldc1612_is_data_ready(CHANNEL_0);
|
||||
|
||||
// uint8_t m8_result[6];
|
||||
// m8_result[0] = (uint8_t)(status_8 >> 8);
|
||||
// m8_result[1] = (uint8_t)(status_8 & 0xFF);
|
||||
// m8_result[2] = ready_8 ? 0x01 : 0x00;
|
||||
// m8_result[3] = (status_8 & 0x0008) ? 0xAE : 0x00; // 幅度错误
|
||||
// m8_result[4] = 0x88; // M8标记
|
||||
// m8_result[5] = 0xEE; // 极端测试标记
|
||||
|
||||
// send_response(RESP_TYPE_OK, m8_result, sizeof(m8_result));
|
||||
// return;
|
||||
// }
|
||||
// case 9u: // M9命令 - 多频率特性测试
|
||||
// // 命令: D5 03 02 4D 39 8B
|
||||
// // 响应: B5 F0 08 [高频状态2字节][高频就绪标志][低频状态2字节][低频就绪标志][M9标记][多频测试标记] CRC
|
||||
// // 响应格式:
|
||||
// // [0-1]: 高频测试状态
|
||||
// // [2]: 高频就绪标志 (0x01=就绪, 0x00=未就绪)
|
||||
// // [3-4]: 低频测试状态
|
||||
// // [5]: 低频就绪标志 (0x01=就绪, 0x00=未就绪)
|
||||
// // [6]: 0x99 - M9命令标记
|
||||
// // [7]: 0xAA - 多频测试标记
|
||||
// {
|
||||
// // 测试1: 高频配置
|
||||
// ldc1612_reset_sensor();
|
||||
// delay_ms(50);
|
||||
|
||||
// uint8_t high_freq[2] = {0x04, 0x00}; // 高频
|
||||
// uint8_t low_drive[2] = {0x80, 0x00}; // 低电流
|
||||
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_FREQ_REG_START + CHANNEL_0, high_freq);
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_DRIVER_CURRENT_REG, low_drive);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 启动高频测试
|
||||
// uint8_t start_hf[2] = {0x16, 0x01};
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SENSOR_CONFIG_REG, start_hf);
|
||||
// delay_ms(200);
|
||||
|
||||
// uint16_t hf_status = ldc1612_get_sensor_status();
|
||||
// bool hf_ready = ldc1612_is_data_ready(CHANNEL_0);
|
||||
|
||||
// // 测试2: 低频配置
|
||||
// uint8_t sleep_mode[2] = {0x20, 0x01};
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SENSOR_CONFIG_REG, sleep_mode);
|
||||
// delay_ms(50);
|
||||
|
||||
// uint8_t low_freq[2] = {0x20, 0x00}; // 低频
|
||||
// uint8_t high_drive[2] = {0xC0, 0x00}; // 高电流
|
||||
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_FREQ_REG_START + CHANNEL_0, low_freq);
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SET_DRIVER_CURRENT_REG, high_drive);
|
||||
// delay_ms(10);
|
||||
|
||||
// // 启动低频测试
|
||||
// LDC1612_IIC_WRITE_16BITS(LDC1612_ADDR, SENSOR_CONFIG_REG, start_hf);
|
||||
// delay_ms(200);
|
||||
|
||||
// uint16_t lf_status = ldc1612_get_sensor_status();
|
||||
// bool lf_ready = ldc1612_is_data_ready(CHANNEL_0);
|
||||
|
||||
// uint8_t m9_result[8];
|
||||
// m9_result[0] = (uint8_t)(hf_status >> 8); // 高频状态
|
||||
// m9_result[1] = (uint8_t)(hf_status & 0xFF);
|
||||
// m9_result[2] = hf_ready ? 0x01 : 0x00; // 高频就绪
|
||||
// m9_result[3] = (uint8_t)(lf_status >> 8); // 低频状态
|
||||
// m9_result[4] = (uint8_t)(lf_status & 0xFF);
|
||||
// m9_result[5] = lf_ready ? 0x01 : 0x00; // 低频就绪
|
||||
// m9_result[6] = 0x99; // M9标记
|
||||
// m9_result[7] = 0xAA; // 多频测试标记
|
||||
|
||||
// send_response(RESP_TYPE_OK, m9_result, sizeof(m9_result));
|
||||
// return;
|
||||
// }
|
||||
// case 201u: // M201命令
|
||||
// send_response(RESP_TYPE_OK, s_report_status_ok, sizeof(s_report_status_ok));
|
||||
// return;
|
||||
|
||||
default:
|
||||
// 其它无参数命令在此扩展(示例:M100)处理逻辑该如何待定
|
||||
// send_response(RESP_TYPE_OK, s_report_status_ok, sizeof(s_report_status_ok));
|
||||
// return;
|
||||
break;
|
||||
}
|
||||
// 未在处理列表的无参数基础命令,回复错误
|
||||
send_response(RESP_TYPE_TYPE_ERR, s_report_status_err, sizeof(s_report_status_err));
|
||||
return;
|
||||
}
|
||||
|
||||
// 情况B:有附加参数的命令
|
||||
if (cmd[cmd_index] == 'S') {
|
||||
cmd_index++;
|
||||
uint32_t param_value = 0;
|
||||
const uint8_t used_param_cmd = parse_uint_dec(&cmd[cmd_index], (uint8_t)(cmd_len - cmd_index), ¶m_value);
|
||||
if (used_param_cmd == 0) {
|
||||
// 'S' 后没有数字,格式错误
|
||||
send_response(RESP_TYPE_LEN_ERR, s_report_status_err, sizeof(s_report_status_err));
|
||||
return;
|
||||
}
|
||||
|
||||
switch (base_cmd)
|
||||
{
|
||||
// case 100u:
|
||||
// // set_pwm(param_value);
|
||||
// printf("Set PWM to %u\n", param_value);
|
||||
// return;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
send_response(RESP_TYPE_TYPE_ERR, s_report_status_err, sizeof(s_report_status_err));
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 处理串口环形缓冲区中的命令数据,解析完整的协议帧。
|
||||
* @details 本函数实现一个基于状态机的协议解析器,用于处理格式为 D5 03 LEN [cmd] CRC 的命令帧:
|
||||
* - 状态1:等待包头字节 PROTOCOL_PACKAGE_HEADER (0xD5)
|
||||
* - 状态2:接收板卡类型字节 PROTOCOL_BOARD_TYPE (0x03)
|
||||
* - 状态3:接收长度字段并计算期望的完整帧长度
|
||||
* - 状态4:继续接收剩余数据直到完整帧
|
||||
* - 状态5:对完整帧进行校验(包头、板卡类型、CRC)并处理
|
||||
*
|
||||
* 函数采用非阻塞方式处理,每次调用处理缓冲区中所有可用数据。
|
||||
* 遇到格式错误、长度异常或校验失败时自动重置状态机。
|
||||
*
|
||||
* @note 本函数使用静态变量维护解析状态,因此不可重入。在中断环境中使用需注意并发安全。
|
||||
* 协议帧最大长度受 PROTOCOL_MAX_FRAME_LEN 限制,超出范围的帧将被丢弃。
|
||||
*
|
||||
* @warning 函数依赖 uart_ring_buffer_available() 和 uart_ring_buffer_get()
|
||||
* 正确实现,若这些函数有缺陷可能导致死循环或数据丢失。
|
||||
*
|
||||
* @see handle_command() 用于处理校验通过的完整命令帧
|
||||
* @see command_sum_crc_calc() 用于计算和校验 CRC 值
|
||||
* @see send_response() 用于发送错误响应
|
||||
*
|
||||
* @ingroup Command
|
||||
*/
|
||||
void command_process(void) {
|
||||
static uint8_t cmd_buf[PROTOCOL_MAX_FRAME_LEN];
|
||||
static uint8_t cmd_len = 0;
|
||||
static uint8_t expected_cmd_len = 0; // 0 表示尚未确定总长度
|
||||
|
||||
while (uart_ring_buffer_available() > 0) {
|
||||
int byte = uart_ring_buffer_get();
|
||||
if (byte < 0) break;
|
||||
|
||||
if (cmd_len == 0) {
|
||||
if ((uint8_t)byte == PROTOCOL_PACKAGE_HEADER) {
|
||||
cmd_buf[cmd_len++] = (uint8_t)byte;
|
||||
expected_cmd_len = 0; // 等待进一步字段以确定长度
|
||||
} else {
|
||||
// 丢弃非起始字节
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
if (cmd_len >= PROTOCOL_MAX_FRAME_LEN) {
|
||||
// 防御:缓冲溢出,复位状态机
|
||||
cmd_len = 0;
|
||||
expected_cmd_len = 0;
|
||||
}
|
||||
|
||||
// 缓存后续字节
|
||||
cmd_buf[cmd_len++] = (uint8_t)byte;
|
||||
|
||||
// 当到达长度字段(索引 2)后,确定总长度:3 + LEN + 1
|
||||
if (cmd_len == 3) {
|
||||
uint8_t payload_len = cmd_buf[2];
|
||||
expected_cmd_len = (uint8_t)(3 + payload_len + 1);
|
||||
if (expected_cmd_len > PROTOCOL_MAX_FRAME_LEN) {
|
||||
// 异常:长度超界,复位状态机
|
||||
cmd_len = 0;
|
||||
expected_cmd_len = 0;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
if (expected_cmd_len > 0 && cmd_len == expected_cmd_len) {
|
||||
// 到帧尾,进行各项校验
|
||||
bool verification_status = true;
|
||||
|
||||
#ifdef DEBUG_VERBOSE
|
||||
if (cmd_buf[0] != PROTOCOL_PACKAGE_HEADER) {
|
||||
send_response(RESP_TYPE_HEADER_ERR, s_report_status_err, sizeof(s_report_status_err));
|
||||
verification_status = false;
|
||||
}
|
||||
#endif
|
||||
|
||||
if (verification_status && cmd_buf[1] != PROTOCOL_BOARD_TYPE) {
|
||||
send_response(RESP_TYPE_TYPE_ERR, s_report_status_err, sizeof(s_report_status_err));
|
||||
verification_status = false;
|
||||
}
|
||||
if (verification_status) {
|
||||
uint8_t crc_calc = command_sum_crc_calc(cmd_buf, expected_cmd_len);
|
||||
uint8_t crc_recv = cmd_buf[expected_cmd_len - 1];
|
||||
if (crc_calc != crc_recv) {
|
||||
send_response(RESP_TYPE_CRC_ERR, s_report_status_err, sizeof(s_report_status_err));
|
||||
verification_status = false;
|
||||
}
|
||||
}
|
||||
|
||||
if (verification_status) {
|
||||
handle_command(cmd_buf, expected_cmd_len);
|
||||
}
|
||||
|
||||
// 复位,等待下一帧
|
||||
cmd_len = 0;
|
||||
expected_cmd_len = 0;
|
||||
}
|
||||
}
|
||||
}
|
@@ -34,6 +34,9 @@ OF SUCH DAMAGE.
|
||||
|
||||
#include "gd32e23x_it.h"
|
||||
#include "systick.h"
|
||||
#include "uart.h"
|
||||
#include "uart_ring_buffer.h"
|
||||
#include "led.h"
|
||||
|
||||
/*!
|
||||
\brief this function handles NMI exception
|
||||
@@ -93,7 +96,14 @@ void PendSV_Handler(void)
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
void SysTick_Handler(void)
|
||||
{
|
||||
void SysTick_Handler(void) {
|
||||
led_heart_beat(); // LED心跳指示灯
|
||||
delay_decrement();
|
||||
}
|
||||
|
||||
void USART0_IRQHandler(void) {
|
||||
if (RESET != usart_interrupt_flag_get(USART0, USART_INT_FLAG_RBNE)) {
|
||||
uint8_t data = usart_data_receive(USART0);
|
||||
(void)uart_ring_buffer_put(data); // 缓冲满时丢弃,返回值可用于统计
|
||||
}
|
||||
}
|
677
Src/i2c.c
Normal file
677
Src/i2c.c
Normal file
@@ -0,0 +1,677 @@
|
||||
//
|
||||
// Created by dell on 24-12-20.
|
||||
//
|
||||
|
||||
#include "i2c.h"
|
||||
|
||||
/*!
|
||||
\brief configure the GPIO ports
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
void i2c_gpio_config(void) {
|
||||
/* enable IIC GPIO clock */
|
||||
rcu_periph_clock_enable(RCU_GPIO_I2C);
|
||||
|
||||
/* connect I2C_SCL_PIN to I2C_SCL */
|
||||
gpio_af_set(I2C_SCL_PORT, I2C_GPIO_AF, I2C_SCL_PIN);
|
||||
/* connect I2C_SDA_PIN to I2C_SDA */
|
||||
gpio_af_set(I2C_SDA_PORT, I2C_GPIO_AF, I2C_SDA_PIN);
|
||||
/* configure GPIO pins of I2C */
|
||||
gpio_mode_set(I2C_SCL_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, I2C_SCL_PIN);
|
||||
gpio_output_options_set(I2C_SCL_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SCL_PIN);
|
||||
gpio_mode_set(I2C_SDA_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, I2C_SDA_PIN);
|
||||
gpio_output_options_set(I2C_SDA_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SDA_PIN);
|
||||
}
|
||||
|
||||
/*!
|
||||
\brief configure the I2CX interface
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
i2c_result_t i2c_config(void) {
|
||||
/* configure I2C GPIO */
|
||||
i2c_gpio_config();
|
||||
/* enable I2C clock */
|
||||
rcu_periph_clock_enable(RCU_I2C);
|
||||
/* configure I2C clock */
|
||||
i2c_clock_config(I2C0, I2C_SPEED, I2C_DTCY_2);
|
||||
/* configure I2C address */
|
||||
i2c_mode_addr_config(I2C0, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, 0xA0);
|
||||
/* enable I2CX */
|
||||
i2c_enable(I2C0);
|
||||
/* enable acknowledge */
|
||||
i2c_ack_config(I2C0, I2C_ACK_ENABLE);
|
||||
|
||||
return I2C_RESULT_SUCCESS;
|
||||
}
|
||||
|
||||
/* wait for SCL to go high, return true if successful, false if timeout */
|
||||
static bool i2c_wait_scl_high(uint16_t max_wait_time) {
|
||||
while (max_wait_time--) {
|
||||
if (gpio_input_bit_get(I2C_SCL_PORT, I2C_SCL_PIN)) {
|
||||
return true;
|
||||
}
|
||||
delay_10us(1);
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/* generate one manual SCL pulse; return true if SCL observed high (no stuck/overstretch) */
|
||||
static bool i2c_generate_scl_pulse(void) {
|
||||
GPIO_BC(I2C_SCL_PORT) = I2C_SCL_PIN; /* drive SCL low */
|
||||
delay_10us(1);
|
||||
GPIO_BOP(I2C_SCL_PORT) = I2C_SCL_PIN; /* release SCL (open-drain -> high via pull-up) */
|
||||
return i2c_wait_scl_high(200); /* wait up to ~2ms for clock stretching release */
|
||||
}
|
||||
|
||||
/*!
|
||||
\brief reset I2C bus
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
i2c_result_t i2c_bus_reset(void) {
|
||||
/* 1. Disable & deinit peripheral so pins can be fully controlled */
|
||||
i2c_disable(I2C0);
|
||||
i2c_deinit(I2C0);
|
||||
|
||||
#ifdef DEBUG_VERBOSE
|
||||
printf("I2C bus reset\r\n");
|
||||
#endif
|
||||
|
||||
/* 2. Configure SCL/SDA as GPIO open-drain outputs with pull-up and release them */
|
||||
gpio_mode_set(I2C_SCL_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_PULLUP, I2C_SCL_PIN);
|
||||
gpio_mode_set(I2C_SDA_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_PULLUP, I2C_SDA_PIN);
|
||||
gpio_output_options_set(I2C_SCL_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SCL_PIN);
|
||||
gpio_output_options_set(I2C_SDA_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SDA_PIN);
|
||||
gpio_bit_set(I2C_SCL_PORT, I2C_SCL_PIN); /* release SCL */
|
||||
gpio_bit_set(I2C_SDA_PORT, I2C_SDA_PIN); /* release SDA */
|
||||
|
||||
#ifdef DEBUG_VERBOSE
|
||||
printf("I2C bus reset: SCL = %d, SDA = %d\r\n", gpio_input_bit_get(I2C_SCL_PORT, I2C_SCL_PIN), gpio_input_bit_get(I2C_SDA_PORT, I2C_SDA_PIN));
|
||||
#endif
|
||||
|
||||
/* 3. Double sample to confirm bus state */
|
||||
delay_10us(1);
|
||||
bool scl_value1 = gpio_input_bit_get(I2C_SCL_PORT, I2C_SCL_PIN);
|
||||
bool sda_value1 = gpio_input_bit_get(I2C_SDA_PORT, I2C_SDA_PIN);
|
||||
delay_10us(1);
|
||||
bool scl_value2 = gpio_input_bit_get(I2C_SCL_PORT, I2C_SCL_PIN);
|
||||
bool sda_value2 = gpio_input_bit_get(I2C_SDA_PORT, I2C_SDA_PIN);
|
||||
|
||||
/* 4. If SCL low -> stuck (cannot proceed) */
|
||||
if (!scl_value2) {
|
||||
#ifdef DEBUG_VERBOSE
|
||||
printf("I2C bus reset: SCL stuck low\r\n");
|
||||
#endif
|
||||
return I2C_RECOVERY_SCL_STUCK_LOW;
|
||||
}
|
||||
|
||||
/* 5. Fast path: bus idle */
|
||||
if (scl_value1 && sda_value1 && scl_value2 && sda_value2) {
|
||||
i2c_config();
|
||||
#ifdef DEBUG_VERBOSE
|
||||
printf("I2C bus reset: bus idle\r\n");
|
||||
#endif
|
||||
return I2C_RECOVERY_OK;
|
||||
}
|
||||
|
||||
/* 6. SDA low: attempt to free by generating up to I2C_RECOVERY_CLOCKS pulses */
|
||||
if (scl_value2 && !sda_value2) {
|
||||
bool sda_released = false;
|
||||
#ifdef DEBUG_VERBOSE
|
||||
printf("I2C bus reset: SCL will try to free SDA\r\n");
|
||||
#endif
|
||||
for (uint8_t i = 0; i < I2C_RECOVERY_CLOCKS && !sda_released; i++) {
|
||||
if (!i2c_generate_scl_pulse()) {
|
||||
return I2C_RECOVERY_SCL_STUCK_LOW; /* SCL failed to go high */
|
||||
}
|
||||
if (gpio_input_bit_get(I2C_SDA_PORT, I2C_SDA_PIN)) {
|
||||
sda_released = true;
|
||||
}
|
||||
}
|
||||
if (!sda_released) {
|
||||
return I2C_RECOVERY_SDA_STUCK_LOW;
|
||||
}
|
||||
/* 7. Generate a STOP condition to leave bus in idle state */
|
||||
#ifdef DEBUG_VERBOSE
|
||||
printf("I2C bus reset: generating STOP condition\r\n");
|
||||
#endif
|
||||
gpio_bit_reset(I2C_SDA_PORT, I2C_SDA_PIN); /* SDA low */
|
||||
delay_10us(1);
|
||||
gpio_bit_set(I2C_SCL_PORT, I2C_SCL_PIN); /* ensure SCL high */
|
||||
delay_10us(1);
|
||||
gpio_bit_set(I2C_SDA_PORT, I2C_SDA_PIN); /* SDA rising while SCL high -> STOP */
|
||||
delay_10us(1);
|
||||
}
|
||||
|
||||
#ifdef DEBUG_VERBOSE
|
||||
printf("I2C bus reset: bus recovered\r\n");
|
||||
#endif
|
||||
/* 8. Reconfigure & enable peripheral */
|
||||
i2c_config();
|
||||
return I2C_RECOVERY_OK;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 扫描I2C总线,查找连接的设备
|
||||
*
|
||||
* 该函数会扫描I2C总线上的所有地址(1到126),并尝试与每个地址进行通信。
|
||||
* 如果在某个地址上发现了设备,则会打印出该设备的地址。
|
||||
* 最后会打印出找到的设备总数。
|
||||
*/
|
||||
void i2c_scan(void) {
|
||||
uint32_t timeout;
|
||||
uint8_t address;
|
||||
int found_devices = 0;
|
||||
|
||||
// printf("Scanning I2C bus...\r\n");
|
||||
const char* msg1 = "Scanning I2C bus...\r\n";
|
||||
for (uint8_t i = 0; msg1[i] != '\0'; i++) {
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(I2C_DEBUG_UART, msg1[i]);
|
||||
}
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TC) == RESET) {}
|
||||
|
||||
for (address = 1; address < 127; address++) {
|
||||
timeout = 0;
|
||||
|
||||
// 生成起始条件
|
||||
while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT))
|
||||
timeout++;
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
continue; // 超时,跳过该地址
|
||||
}
|
||||
i2c_start_on_bus(I2C0);
|
||||
timeout = 0;
|
||||
|
||||
// 等待起始条件发送完成
|
||||
while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT))
|
||||
timeout++;
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
continue; // 超时,跳过该地址
|
||||
}
|
||||
i2c_master_addressing(I2C0, (address << 1), I2C_TRANSMITTER);
|
||||
timeout = 0;
|
||||
|
||||
// 等待地址发送完成
|
||||
while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
|
||||
timeout++;
|
||||
if (timeout < I2C_TIME_OUT) {
|
||||
i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
|
||||
// printf("Found device at 0x%02X\r\n", address);
|
||||
const char* msg2_prefix = "Found device at 0x";
|
||||
for (uint8_t i = 0; msg2_prefix[i] != '\0'; i++) {
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(I2C_DEBUG_UART, msg2_prefix[i]);
|
||||
}
|
||||
// 发送地址的十六进制表示
|
||||
uint8_t hex_chars[] = "0123456789ABCDEF";
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(I2C_DEBUG_UART, hex_chars[(address >> 4) & 0x0F]);
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(I2C_DEBUG_UART, hex_chars[address & 0x0F]);
|
||||
const char* msg2_suffix = "\r\n";
|
||||
for (uint8_t i = 0; msg2_suffix[i] != '\0'; i++) {
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(I2C_DEBUG_UART, msg2_suffix[i]);
|
||||
}
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TC) == RESET) {}
|
||||
found_devices++;
|
||||
}
|
||||
|
||||
// 生成停止条件
|
||||
i2c_stop_on_bus(I2C0);
|
||||
|
||||
timeout = 0;
|
||||
|
||||
while (i2c_flag_get(I2C0, I2C_FLAG_STPDET) && (timeout < I2C_TIME_OUT))
|
||||
timeout++;
|
||||
}
|
||||
|
||||
if (found_devices == 0) {
|
||||
// printf("No I2C devices found.\r\n");
|
||||
const char* msg3 = "No I2C devices found.\r\n";
|
||||
for (uint8_t i = 0; msg3[i] != '\0'; i++) {
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(I2C_DEBUG_UART, msg3[i]);
|
||||
}
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TC) == RESET) {}
|
||||
} else {
|
||||
// printf("Total %d I2C devices found.\r\n", found_devices);
|
||||
const char* msg4_prefix = "Total ";
|
||||
for (uint8_t i = 0; msg4_prefix[i] != '\0'; i++) {
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(I2C_DEBUG_UART, msg4_prefix[i]);
|
||||
}
|
||||
// 发送设备数量
|
||||
if (found_devices >= 10) {
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(I2C_DEBUG_UART, '0' + (found_devices / 10));
|
||||
}
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(I2C_DEBUG_UART, '0' + (found_devices % 10));
|
||||
const char* msg4_suffix = " I2C devices found.\r\n";
|
||||
for (uint8_t i = 0; msg4_suffix[i] != '\0'; i++) {
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(I2C_DEBUG_UART, msg4_suffix[i]);
|
||||
}
|
||||
while (usart_flag_get(I2C_DEBUG_UART, USART_FLAG_TC) == RESET) {}
|
||||
}
|
||||
}
|
||||
|
||||
i2c_result_t i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[2]) {
|
||||
i2c_state_t state = I2C_STATE_START;
|
||||
uint16_t timeout = 0;
|
||||
uint8_t retry_count = 0;
|
||||
|
||||
/* parameter validation */
|
||||
if (data == NULL || slave_addr > 0x7F) {
|
||||
return I2C_RESULT_INVALID_PARAM;
|
||||
}
|
||||
|
||||
while (retry_count < I2C_MAX_RETRY) {
|
||||
switch (state) {
|
||||
case I2C_STATE_START:
|
||||
timeout = 0;
|
||||
|
||||
/* wait for bus to be idle */
|
||||
while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
i2c_start_on_bus(I2C0);
|
||||
timeout = 0;
|
||||
state = I2C_STATE_SEND_ADDRESS;
|
||||
break;
|
||||
|
||||
case I2C_STATE_SEND_ADDRESS:
|
||||
/* wait for start condition to be sent. SBSEND flag */
|
||||
while((!i2c_flag_get(I2C0, I2C_FLAG_SBSEND)) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
/* send slave address */
|
||||
i2c_master_addressing(I2C0, slave_addr << 1, I2C_TRANSMITTER);
|
||||
timeout = 0;
|
||||
state = I2C_STATE_CLEAR_ADDRESS;
|
||||
break;
|
||||
|
||||
case I2C_STATE_CLEAR_ADDRESS:
|
||||
/* wait for address to be acknowledged.ADDSEND set means i2c slave sends ACK */
|
||||
while ((!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND)) && (!i2c_flag_get(I2C0, I2C_FLAG_AERR)) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
} else if (i2c_flag_get(I2C0, I2C_FLAG_ADDSEND))
|
||||
{
|
||||
i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
|
||||
timeout =0;
|
||||
state = I2C_STATE_TRANSMIT_REG;
|
||||
break;
|
||||
} else {
|
||||
i2c_flag_clear(I2C0, I2C_FLAG_AERR);
|
||||
timeout =0;
|
||||
#ifdef DEBUG_VERBOES
|
||||
printf("IIC write failed for Error Slave Address. \n");
|
||||
#endif
|
||||
return I2C_RESULT_NACK;
|
||||
}
|
||||
|
||||
case I2C_STATE_TRANSMIT_REG:
|
||||
/* wait until the transmit data buffer is empty */
|
||||
while ((!i2c_flag_get(I2C0, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
/* send register address */
|
||||
i2c_data_transmit(I2C0, reg_addr);
|
||||
timeout = 0;
|
||||
state = I2C_STATE_TRANSMIT_DATA;
|
||||
break;
|
||||
|
||||
case I2C_STATE_TRANSMIT_DATA:
|
||||
/* wait until the transmit data buffer is empty */
|
||||
while ((!i2c_flag_get(I2C0, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
/* send register MSB value */
|
||||
i2c_data_transmit(I2C0, data[0]);
|
||||
timeout = 0;
|
||||
|
||||
/* wait until the transmit data buffer is empty */
|
||||
while ((!i2c_flag_get(I2C0, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
if (i2c_flag_get(I2C0, I2C_FLAG_AERR)) {
|
||||
i2c_stop_on_bus(I2C0);
|
||||
return I2C_RESULT_NACK;
|
||||
} else if (i2c_flag_get(I2C0, I2C_FLAG_BERR) || i2c_flag_get(I2C0, I2C_FLAG_LOSTARB)) {
|
||||
// 可按需清标志
|
||||
i2c_stop_on_bus(I2C0);
|
||||
return I2C_RESULT_ERROR;
|
||||
}
|
||||
|
||||
/* send register LSB value */
|
||||
i2c_data_transmit(I2C0, data[1]);
|
||||
timeout = 0;
|
||||
|
||||
/* wait until BTC bit is set */
|
||||
while (!i2c_flag_get(I2C0, I2C_FLAG_BTC) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
state = I2C_STATE_STOP;
|
||||
break;
|
||||
|
||||
case I2C_STATE_STOP:
|
||||
/* send a stop condition to I2C bus */
|
||||
i2c_stop_on_bus(I2C0);
|
||||
|
||||
timeout = 0;
|
||||
while ((I2C_CTL0(I2C0) & I2C_CTL0_STOP) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
/* i2c master sends STOP signal successfully */
|
||||
/* success */
|
||||
return I2C_RESULT_SUCCESS;
|
||||
|
||||
case I2C_STATE_ERROR:
|
||||
/* send a stop condition to I2C bus */
|
||||
i2c_stop_on_bus(I2C0);
|
||||
|
||||
timeout = 0;
|
||||
while ((I2C_CTL0(I2C0) & I2C_CTL0_STOP) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
return I2C_RESULT_ERROR;
|
||||
}
|
||||
|
||||
i2c_flag_clear(I2C0, I2C_FLAG_AERR);
|
||||
i2c_flag_clear(I2C0, I2C_FLAG_BERR);
|
||||
i2c_flag_clear(I2C0, I2C_FLAG_LOSTARB);
|
||||
|
||||
retry_count ++;
|
||||
if (retry_count >= I2C_MAX_RETRY)
|
||||
{
|
||||
#ifdef DEBUG_VERBOES
|
||||
printf("IIC write failed after %d retries\n", I2C_MAX_RETRY);
|
||||
#endif
|
||||
return I2C_RESULT_ERROR;
|
||||
}
|
||||
|
||||
/* reset state machine for retry */
|
||||
state = I2C_STATE_START;
|
||||
timeout = 0;
|
||||
|
||||
/* small delay before retry */
|
||||
delay_10us(10);
|
||||
break;
|
||||
|
||||
default:
|
||||
state = I2C_STATE_START;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return I2C_RESULT_TIMEOUT;
|
||||
}
|
||||
|
||||
i2c_result_t i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data) {
|
||||
i2c_state_t state = I2C_STATE_START;
|
||||
uint16_t timeout = 0;
|
||||
uint8_t retry_count = 0;
|
||||
bool write_phase = true;
|
||||
|
||||
// 参数检查:防止空指针和非法地址
|
||||
if (data == NULL || slave_addr > 0x7F) {
|
||||
return I2C_RESULT_INVALID_PARAM;
|
||||
}
|
||||
|
||||
/* enable acknowledge */
|
||||
i2c_ack_config(I2C0, I2C_ACK_ENABLE);
|
||||
|
||||
while (retry_count < (uint8_t)I2C_MAX_RETRY) {
|
||||
switch (state) {
|
||||
case I2C_STATE_START:
|
||||
timeout = 0;
|
||||
|
||||
// wait for bus to be idle
|
||||
while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
// send start condition
|
||||
i2c_start_on_bus(I2C0);
|
||||
state = I2C_STATE_SEND_ADDRESS;
|
||||
timeout = 0;
|
||||
break;
|
||||
|
||||
case I2C_STATE_SEND_ADDRESS:
|
||||
/* wait for start condition to be sent */
|
||||
while ((!i2c_flag_get(I2C0, I2C_FLAG_SBSEND)) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
// send slave address
|
||||
if (write_phase) {
|
||||
/* write phase: send address with write bit */
|
||||
i2c_master_addressing(I2C0, (slave_addr << 1), I2C_TRANSMITTER);
|
||||
} else {
|
||||
/* read phase: send address with read bit */
|
||||
i2c_master_addressing(I2C0, (slave_addr << 1) | 0x01, I2C_RECEIVER);
|
||||
}
|
||||
|
||||
state = I2C_STATE_CLEAR_ADDRESS;
|
||||
timeout = 0;
|
||||
break;
|
||||
|
||||
case I2C_STATE_CLEAR_ADDRESS:
|
||||
/* wait for address to be acknowledged */
|
||||
while ((!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND)) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
if (write_phase) {
|
||||
/* clear address flag (write phase) */
|
||||
i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
|
||||
state = I2C_STATE_TRANSMIT_DATA;
|
||||
} else {
|
||||
/* READ phase for 2 bytes: set POS=NEXT and disable ACK BEFORE clearing ADDR */
|
||||
i2c_ackpos_config(I2C0, I2C_ACKPOS_NEXT);
|
||||
i2c_ack_config(I2C0, I2C_ACK_DISABLE);
|
||||
|
||||
/* now clear address flag to release SCL and enter data phase */
|
||||
i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
|
||||
|
||||
state = I2C_STATE_RECEIVE_DATA;
|
||||
}
|
||||
|
||||
timeout = 0;
|
||||
break;
|
||||
|
||||
case I2C_STATE_TRANSMIT_DATA:
|
||||
/* wait for transmit buffer to be empty */
|
||||
while ((!i2c_flag_get(I2C0, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
/* send register address */
|
||||
i2c_data_transmit(I2C0, reg_addr);
|
||||
state = I2C_STATE_RESTART;
|
||||
timeout = 0;
|
||||
break;
|
||||
|
||||
case I2C_STATE_RESTART:
|
||||
/* wait for byte transfer complete BTC: Bit Transfer Complete */
|
||||
while ((!i2c_flag_get(I2C0, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
/* generate repeated start condition */
|
||||
i2c_start_on_bus(I2C0);
|
||||
|
||||
/* wait for repeated start condition to be sent */
|
||||
timeout = 0;
|
||||
while ((!i2c_flag_get(I2C0, I2C_FLAG_SBSEND)) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
/* send slave address with read bit (R/W bit is set by library) */
|
||||
i2c_master_addressing(I2C0, (slave_addr << 1), I2C_RECEIVER);
|
||||
|
||||
/* switch to read phase */
|
||||
write_phase = false;
|
||||
state = I2C_STATE_CLEAR_ADDRESS;
|
||||
timeout = 0;
|
||||
break;
|
||||
|
||||
case I2C_STATE_RECEIVE_DATA:
|
||||
/* Wait for BTC (both bytes received) */
|
||||
while ((!i2c_flag_get(I2C0, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
/* Send STOP before reading the last two bytes */
|
||||
i2c_stop_on_bus(I2C0);
|
||||
|
||||
/* Read the two bytes back-to-back */
|
||||
data[0] = i2c_data_receive(I2C0);
|
||||
data[1] = i2c_data_receive(I2C0);
|
||||
|
||||
state = I2C_STATE_STOP;
|
||||
break;
|
||||
|
||||
case I2C_STATE_STOP:
|
||||
/* wait for stop condition to complete */
|
||||
while ((I2C_CTL0(I2C0) & I2C_CTL0_STOP) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout >= I2C_TIME_OUT) {
|
||||
state = I2C_STATE_ERROR;
|
||||
break;
|
||||
}
|
||||
|
||||
/* i2c master sends STOP signal successfully */
|
||||
/* success */
|
||||
return I2C_RESULT_SUCCESS;
|
||||
|
||||
case I2C_STATE_ERROR:
|
||||
/* send stop condition to release bus */
|
||||
i2c_stop_on_bus(I2C0);
|
||||
|
||||
retry_count++;
|
||||
if (retry_count >= I2C_MAX_RETRY) {
|
||||
#ifdef DEBUG_VERBOES
|
||||
printf("IIC read failed after %d retries\n", I2C_RETRY_MAX);
|
||||
#endif
|
||||
return I2C_RESULT_ERROR;
|
||||
}
|
||||
|
||||
/* reset state machine for retry */
|
||||
state = I2C_STATE_START;
|
||||
write_phase = true;
|
||||
timeout = 0;
|
||||
|
||||
/* small delay before retry */
|
||||
delay_10us(10);
|
||||
break;
|
||||
|
||||
default:
|
||||
state = I2C_STATE_START;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return I2C_RESULT_TIMEOUT;
|
||||
}
|
||||
|
||||
#ifdef DEBUG_VERBOSE
|
||||
/*!
|
||||
\brief get status string for debugging
|
||||
\param[in] status: i2c_status_t value
|
||||
\param[out] none
|
||||
\retval const char* status string
|
||||
*/
|
||||
const char* i2c_get_status_string(i2c_result_t status) {
|
||||
switch (status) {
|
||||
case I2C_RESULT_SUCCESS:
|
||||
return "SUCCESS";
|
||||
case I2C_RESULT_TIMEOUT:
|
||||
return "TIMEOUT";
|
||||
case I2C_RESULT_NACK:
|
||||
return "NACK";
|
||||
case I2C_RESULT_BUS_BUSY:
|
||||
return "BUS_BUSY";
|
||||
case I2C_RESULT_ERROR:
|
||||
return "ERROR";
|
||||
case I2C_RESULT_INVALID_PARAM:
|
||||
return "INVALID_PARAM";
|
||||
default:
|
||||
return "UNKNOWN";
|
||||
}
|
||||
}
|
||||
#endif
|
47
Src/led.c
47
Src/led.c
@@ -1,20 +1,57 @@
|
||||
#include "led.h"
|
||||
|
||||
/**
|
||||
* @brief LED心跳指示灯功能
|
||||
* @details 实现类似心跳的LED闪烁模式:快闪两次然后暂停
|
||||
* 适合在SysTick中断中调用,通过计数器控制闪烁节拍
|
||||
* @note 假设SysTick中断频率为1ms,心跳周期约为2秒
|
||||
* 心跳模式:亮200ms->灭200ms->亮200ms->灭1400ms(循环)
|
||||
*/
|
||||
void led_heart_beat(void)
|
||||
{
|
||||
static uint16_t heart_beat_counter = 0;
|
||||
|
||||
// 心跳周期:2000ms (假设SysTick为1ms中断)
|
||||
// 模式:亮200ms -> 灭200ms -> 亮200ms -> 灭1400ms
|
||||
heart_beat_counter++;
|
||||
|
||||
if (heart_beat_counter <= 200) {
|
||||
// 第一次亮:0-200ms
|
||||
led_on();
|
||||
}
|
||||
else if (heart_beat_counter <= 400) {
|
||||
// 第一次灭:200-400ms
|
||||
led_off();
|
||||
}
|
||||
else if (heart_beat_counter <= 600) {
|
||||
// 第二次亮:400-600ms
|
||||
led_on();
|
||||
}
|
||||
else if (heart_beat_counter <= 2000) {
|
||||
// 长时间灭:600-2000ms
|
||||
led_off();
|
||||
}
|
||||
else {
|
||||
// 重置计数器,开始新的心跳周期
|
||||
heart_beat_counter = 0;
|
||||
}
|
||||
}
|
||||
|
||||
void led_init(void) {
|
||||
rcu_periph_clock_enable(LED_RCU);
|
||||
gpio_mode_set(LED_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, LED_PIN);
|
||||
gpio_output_options_set(LED_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, LED_PIN);
|
||||
gpio_bit_reset(LED_PORT, LED_PIN);
|
||||
}
|
||||
|
||||
void led_on(void) {
|
||||
gpio_bit_set(LED_PORT, LED_PIN);
|
||||
}
|
||||
|
||||
void led_off(void) {
|
||||
void led_on(void) {
|
||||
gpio_bit_reset(LED_PORT, LED_PIN);
|
||||
}
|
||||
|
||||
void led_off(void) {
|
||||
gpio_bit_set(LED_PORT, LED_PIN);
|
||||
}
|
||||
|
||||
void led_toggle(void) {
|
||||
gpio_bit_toggle(LED_PORT, LED_PIN);
|
||||
}
|
||||
|
40
Src/main.c
40
Src/main.c
@@ -36,7 +36,10 @@ OF SUCH DAMAGE.
|
||||
#include "systick.h"
|
||||
#include "uart.h"
|
||||
#include "led.h"
|
||||
#include "command.h"
|
||||
#include <stdio.h>
|
||||
#include "i2c.h"
|
||||
#include "board_config.h"
|
||||
|
||||
/*!
|
||||
\brief main function
|
||||
@@ -46,17 +49,38 @@ OF SUCH DAMAGE.
|
||||
*/
|
||||
int main(void)
|
||||
{
|
||||
systick_config();
|
||||
uart0_init(115200);
|
||||
// uart1_init(115200); // 如需使用USART1请初始化
|
||||
|
||||
// printf("Hello USART0!\r\n");
|
||||
// uart_set_printf_port(UART_PRINTF_USART1); // 切换printf到USART1
|
||||
// uart_set_printf_port(UART_PRINTF_BOTH); // 同时输出到USART0和USART1
|
||||
setbuf(stdout, NULL);
|
||||
systick_config();
|
||||
rs485_init();
|
||||
|
||||
led_init();
|
||||
|
||||
#ifdef DEBUG_VERBOSE
|
||||
char hello_world[] = {"Hello World!\r\n"};
|
||||
|
||||
for (uint8_t i = 0; i < sizeof(hello_world); i++)
|
||||
{
|
||||
while (usart_flag_get(RS485_PHY, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(RS485_PHY, hello_world[i]);
|
||||
}
|
||||
|
||||
while (usart_flag_get(RS485_PHY, USART_FLAG_TC) == RESET) {}
|
||||
|
||||
|
||||
#endif
|
||||
|
||||
i2c_config();
|
||||
|
||||
#ifdef DEBUG_VERBOSE
|
||||
i2c_scan();
|
||||
|
||||
i2c_bus_reset();
|
||||
#endif
|
||||
|
||||
|
||||
while(1){
|
||||
led_toggle();
|
||||
delay_ms(200);
|
||||
command_process();
|
||||
delay_ms(10);
|
||||
}
|
||||
}
|
||||
|
234
Src/soft_i2c.c
Normal file
234
Src/soft_i2c.c
Normal file
@@ -0,0 +1,234 @@
|
||||
//
|
||||
// Created by dell on 24-12-28.
|
||||
//
|
||||
|
||||
#include "soft_i2c.h"
|
||||
|
||||
/*!
|
||||
\brief delay
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
void soft_i2c_delay(void) {
|
||||
delay_10us(2); // Adjust delay as needed
|
||||
/* delay to freq
|
||||
* 15KHz: delay_us(20);
|
||||
* 65KHz: delay_us(1);
|
||||
*/
|
||||
}
|
||||
|
||||
/*!
|
||||
\brief configure the software IIC GPIO
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
void soft_i2c_config(void) {
|
||||
rcu_periph_clock_enable(RCU_GPIO_I2C);
|
||||
|
||||
gpio_mode_set(I2C_SCL_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_PULLUP, I2C_SCL_PIN);
|
||||
gpio_output_options_set(I2C_SCL_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SCL_PIN);
|
||||
|
||||
gpio_mode_set(I2C_SDA_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_PULLUP, I2C_SDA_PIN);
|
||||
gpio_output_options_set(I2C_SDA_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SDA_PIN);
|
||||
|
||||
I2C_SCL_HIGH();
|
||||
I2C_SDA_HIGH();
|
||||
}
|
||||
|
||||
/*!
|
||||
\brief generate I2C start signal
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
void soft_i2c_start(void) {
|
||||
I2C_SDA_HIGH();
|
||||
I2C_SCL_HIGH();
|
||||
soft_i2c_delay();
|
||||
I2C_SDA_LOW();
|
||||
soft_i2c_delay();
|
||||
I2C_SCL_LOW();
|
||||
}
|
||||
|
||||
/*!
|
||||
\brief generate I2C stop signal
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
void soft_i2c_stop(void) {
|
||||
I2C_SCL_LOW(); // 确保时钟为低
|
||||
I2C_SDA_LOW(); // 拉低数据线
|
||||
soft_i2c_delay();
|
||||
I2C_SCL_HIGH(); // 拉高时钟
|
||||
soft_i2c_delay();
|
||||
I2C_SDA_HIGH(); // 在时钟高电平时拉高数据线产生停止条件
|
||||
soft_i2c_delay(); // 添加缺失的延时
|
||||
}
|
||||
|
||||
/*!
|
||||
\brief send I2C ACK signal
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
void soft_i2c_send_ack(void) {
|
||||
// sda_out();
|
||||
I2C_SDA_LOW();
|
||||
soft_i2c_delay();
|
||||
I2C_SCL_HIGH();
|
||||
soft_i2c_delay();
|
||||
I2C_SCL_LOW();
|
||||
soft_i2c_delay();
|
||||
I2C_SDA_HIGH();
|
||||
}
|
||||
|
||||
/*!
|
||||
\brief send I2C NACK signal
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
void soft_i2c_send_nack(void) {
|
||||
I2C_SDA_HIGH();
|
||||
soft_i2c_delay();
|
||||
I2C_SCL_HIGH();
|
||||
soft_i2c_delay();
|
||||
I2C_SCL_LOW();
|
||||
soft_i2c_delay();
|
||||
I2C_SDA_HIGH();
|
||||
}
|
||||
|
||||
/*!
|
||||
\brief wait I2C ACK signal
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval 0: ACK received, 1: ACK not received
|
||||
*/
|
||||
uint8_t soft_i2c_wait_ack(void) {
|
||||
I2C_SDA_HIGH(); // 释放SDA线,让从设备控制
|
||||
soft_i2c_delay();
|
||||
I2C_SCL_HIGH(); // 拉高时钟
|
||||
soft_i2c_delay();
|
||||
uint8_t ack = !I2C_SDA_READ(); // 读取ACK信号(低电平为ACK)
|
||||
I2C_SCL_LOW(); // 拉低时钟
|
||||
soft_i2c_delay(); // 添加缺失的延时
|
||||
return ack;
|
||||
}
|
||||
|
||||
/*!
|
||||
\brief send a byte via I2C
|
||||
\param[in] byte: byte to be sent
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
void soft_i2c_send_byte(uint8_t byte) {
|
||||
// sda_out();
|
||||
for (int i = 0; i < 8; i++) {
|
||||
if (byte & 0x80) {
|
||||
I2C_SDA_HIGH();
|
||||
} else {
|
||||
I2C_SDA_LOW();
|
||||
}
|
||||
byte <<= 1;
|
||||
soft_i2c_delay();
|
||||
I2C_SCL_HIGH();
|
||||
soft_i2c_delay();
|
||||
I2C_SCL_LOW();
|
||||
soft_i2c_delay();
|
||||
}
|
||||
}
|
||||
|
||||
/*!
|
||||
\brief receive a byte via I2C
|
||||
\param[in] ack: 1: send ACK, 0: send NACK
|
||||
\param[out] none
|
||||
\retval received byte
|
||||
*/
|
||||
uint8_t soft_i2c_receive_byte(uint8_t ack) {
|
||||
uint8_t byte = 0;
|
||||
I2C_SDA_HIGH();
|
||||
for (int i = 0; i < 8; i++) {
|
||||
byte <<= 1;
|
||||
I2C_SCL_HIGH();
|
||||
soft_i2c_delay();
|
||||
if (I2C_SDA_READ()) {
|
||||
byte |= 0x01;
|
||||
}
|
||||
I2C_SCL_LOW();
|
||||
soft_i2c_delay();
|
||||
}
|
||||
if (ack) {
|
||||
soft_i2c_send_ack();
|
||||
} else {
|
||||
soft_i2c_send_nack();
|
||||
}
|
||||
return byte;
|
||||
}
|
||||
|
||||
uint8_t soft_i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[2]) {
|
||||
/* 参数验证 */
|
||||
if (data == NULL || slave_addr > 0x7F) {
|
||||
return SOFT_I2C_FAIL;
|
||||
}
|
||||
|
||||
soft_i2c_start();
|
||||
soft_i2c_send_byte(slave_addr << 1); // 修复:左移1位,添加写位
|
||||
if (!soft_i2c_wait_ack()) {
|
||||
soft_i2c_stop();
|
||||
return SOFT_I2C_FAIL;
|
||||
}
|
||||
soft_i2c_send_byte(reg_addr);
|
||||
if (!soft_i2c_wait_ack()) {
|
||||
soft_i2c_stop();
|
||||
return SOFT_I2C_FAIL;
|
||||
}
|
||||
soft_i2c_send_byte(data[0]);
|
||||
if (!soft_i2c_wait_ack()) {
|
||||
soft_i2c_stop();
|
||||
return SOFT_I2C_FAIL;
|
||||
}
|
||||
soft_i2c_send_byte(data[1]);
|
||||
if (!soft_i2c_wait_ack()) { // 修复:添加错误处理
|
||||
soft_i2c_stop();
|
||||
return SOFT_I2C_FAIL;
|
||||
}
|
||||
soft_i2c_stop();
|
||||
return SOFT_I2C_OK;
|
||||
}
|
||||
|
||||
uint8_t soft_i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data)
|
||||
{
|
||||
/* 参数验证 */
|
||||
if (data == NULL || slave_addr > 0x7F) {
|
||||
return SOFT_I2C_FAIL;
|
||||
}
|
||||
|
||||
/* 写阶段:发送寄存器地址 */
|
||||
soft_i2c_start();
|
||||
soft_i2c_send_byte(slave_addr << 1); // 修复:左移1位,写操作
|
||||
if (!soft_i2c_wait_ack()) {
|
||||
soft_i2c_stop();
|
||||
return SOFT_I2C_FAIL;
|
||||
}
|
||||
soft_i2c_send_byte(reg_addr);
|
||||
if (!soft_i2c_wait_ack()) {
|
||||
soft_i2c_stop();
|
||||
return SOFT_I2C_FAIL;
|
||||
}
|
||||
|
||||
/* 读阶段:重新开始并读取数据 */
|
||||
soft_i2c_start(); // 重新开始
|
||||
soft_i2c_send_byte((slave_addr << 1) | 0x01); // 修复:正确的读地址
|
||||
if (!soft_i2c_wait_ack()) {
|
||||
soft_i2c_stop();
|
||||
return SOFT_I2C_FAIL;
|
||||
}
|
||||
soft_i2c_delay();
|
||||
data[0] = soft_i2c_receive_byte(1); // 第一个字节发送ACK
|
||||
data[1] = soft_i2c_receive_byte(0); // 最后一个字节发送NACK
|
||||
soft_i2c_stop();
|
||||
return SOFT_I2C_OK;
|
||||
}
|
167
Src/systick.c
167
Src/systick.c
@@ -1,83 +1,118 @@
|
||||
/*!
|
||||
\file systick.c
|
||||
\brief the systick configuration file
|
||||
|
||||
\version 2025-02-10, V2.4.0, demo for GD32E23x
|
||||
*/
|
||||
|
||||
/*
|
||||
Copyright (c) 2025, GigaDevice Semiconductor Inc.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without modification,
|
||||
are permitted provided that the following conditions are met:
|
||||
|
||||
1. Redistributions of source code must retain the above copyright notice, this
|
||||
list of conditions and the following disclaimer.
|
||||
2. Redistributions in binary form must reproduce the above copyright notice,
|
||||
this list of conditions and the following disclaimer in the documentation
|
||||
and/or other materials provided with the distribution.
|
||||
3. Neither the name of the copyright holder nor the names of its contributors
|
||||
may be used to endorse or promote products derived from this software without
|
||||
specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||||
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||||
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
||||
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||||
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||||
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
||||
OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/**
|
||||
* ************************************************************************
|
||||
*
|
||||
* @file systick.c
|
||||
* @author GD32
|
||||
* @brief 通过 SysTick 定时器进行微秒级别和毫秒级别的延时函数
|
||||
*
|
||||
* ************************************************************************
|
||||
* @copyright Copyright (c) 2024 GD32
|
||||
* ************************************************************************
|
||||
*/
|
||||
#include "gd32e23x.h"
|
||||
#include "systick.h"
|
||||
|
||||
volatile static uint32_t delay;
|
||||
volatile static uint32_t delay_count = 0;
|
||||
|
||||
/*!
|
||||
\brief configure systick
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
/**
|
||||
* ************************************************************************
|
||||
* @brief 配置 SysTick 定时器
|
||||
*
|
||||
*
|
||||
* ************************************************************************
|
||||
*/
|
||||
void systick_config(void)
|
||||
{
|
||||
/* setup systick timer for 1000Hz interrupts */
|
||||
if (SysTick_Config(SystemCoreClock / 1000U)){
|
||||
/* capture error */
|
||||
while (1){
|
||||
}
|
||||
}
|
||||
/* configure the systick handler priority */
|
||||
//设置了 SysTick 定时器的时钟源为 HCLK
|
||||
systick_clksource_set(SYSTICK_CLKSOURCE_HCLK);
|
||||
|
||||
// 配置SysTick为1ms周期中断
|
||||
// 注意:SysTick_Config会自动设置时钟源为HCLK,所以需要使用SystemCoreClock/1000
|
||||
SysTick_Config(SystemCoreClock / 1000U); // 1ms中断
|
||||
NVIC_SetPriority(SysTick_IRQn, 0x00U);
|
||||
}
|
||||
|
||||
/*!
|
||||
\brief delay a time in milliseconds
|
||||
\param[in] count: count in milliseconds
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
/**
|
||||
* ************************************************************************
|
||||
* @brief delay_ms 毫秒延时函数
|
||||
*
|
||||
* @param[in] count 毫秒值
|
||||
*
|
||||
* ************************************************************************
|
||||
*/
|
||||
void delay_10us(uint32_t count)
|
||||
{
|
||||
// 基于系统时钟的简单循环延时
|
||||
// 这是一个粗略的估计,实际延时可能有偏差 实测10.2us
|
||||
uint32_t loops_per_10us = SystemCoreClock / 1700000; // 粗略估计,每10微秒的循环次数
|
||||
|
||||
for(uint32_t i = 0; i < count; i++) {
|
||||
for(volatile uint32_t j = 0; j < loops_per_10us; j++);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* ************************************************************************
|
||||
* @brief delay_ms 毫秒延时函数
|
||||
*
|
||||
* @param[in] count 毫秒值
|
||||
*
|
||||
* ************************************************************************
|
||||
*/
|
||||
void delay_ms(uint32_t count)
|
||||
{
|
||||
delay = count;
|
||||
|
||||
while(0U != delay){
|
||||
}
|
||||
delay_count = count; // 设置延时计数
|
||||
while (delay_count != 0U);
|
||||
}
|
||||
|
||||
/*!
|
||||
\brief delay decrement
|
||||
\param[in] none
|
||||
\param[out] none
|
||||
\retval none
|
||||
*/
|
||||
/**
|
||||
* ************************************************************************
|
||||
* @brief 每个 SysTick 中断调用时,减少延时计数
|
||||
*
|
||||
* @param[in] void
|
||||
*
|
||||
* ************************************************************************
|
||||
*/
|
||||
void delay_decrement(void)
|
||||
{
|
||||
if (0U != delay){
|
||||
delay--;
|
||||
if (delay_count != 0U)
|
||||
{
|
||||
delay_count--;
|
||||
}
|
||||
}
|
||||
|
||||
// /**
|
||||
// * ************************************************************************
|
||||
// * @brief delay_ms_safe 毫秒延时函数(不干扰SysTick中断)
|
||||
// * @details 使用简单循环实现延时,不会重新配置SysTick
|
||||
// * @param[in] count 毫秒值
|
||||
// * ************************************************************************
|
||||
// */
|
||||
// void delay_ms_safe(uint32_t count)
|
||||
// {
|
||||
// // 基于系统时钟的简单循环延时
|
||||
// // 这是一个粗略的估计,实际延时可能有偏差
|
||||
// uint32_t loops_per_ms = SystemCoreClock / 14000; // 粗略估计
|
||||
|
||||
// for(uint32_t i = 0; i < count; i++) {
|
||||
// for(volatile uint32_t j = 0; j < loops_per_ms; j++);
|
||||
// }
|
||||
// }
|
||||
|
||||
// /**
|
||||
// * ************************************************************************
|
||||
// * @brief delay_us_safe 微秒延时函数(不干扰SysTick中断)
|
||||
// * @details 使用简单循环实现延时,不会重新配置SysTick
|
||||
// * @param[in] count 微秒值
|
||||
// * ************************************************************************
|
||||
// */
|
||||
// void delay_us_safe(uint32_t count)
|
||||
// {
|
||||
// // 基于系统时钟的简单循环延时
|
||||
// // 这是一个粗略的估计,实际延时可能有偏差
|
||||
// uint32_t loops_per_us = SystemCoreClock / 22000000; // 粗略估计,每微秒的循环次数
|
||||
|
||||
// for(uint32_t i = 0; i < count; i++) {
|
||||
// for(volatile uint32_t j = 0; j < loops_per_us; j++);
|
||||
// }
|
||||
// }
|
108
Src/uart.c
108
Src/uart.c
@@ -2,65 +2,71 @@
|
||||
#include "gd32e23x_usart.h"
|
||||
#include "gd32e23x_rcu.h"
|
||||
#include "gd32e23x_gpio.h"
|
||||
#include "board_config.h"
|
||||
|
||||
|
||||
void uart0_init(uint32_t baudrate) {
|
||||
void rs485_init(void) {
|
||||
|
||||
#ifndef RS485_MAX13487
|
||||
/* 使能 GPIOA 和 USART0 时钟 */
|
||||
rcu_periph_clock_enable(RCU_GPIOA);
|
||||
rcu_periph_clock_enable(RCU_USART0);
|
||||
rcu_periph_clock_enable(RS485_GPIO_RCU);
|
||||
rcu_periph_clock_enable(RS485_RCU);
|
||||
|
||||
/* 配置 PA9 为 USART0_TX,PA10 为 USART0_RX */
|
||||
gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_9 | GPIO_PIN_10);
|
||||
gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_9 | GPIO_PIN_10);
|
||||
gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_9 | GPIO_PIN_10);
|
||||
/* 配置 PA2 为 USART0_TX,PA3 为 USART0_RX */
|
||||
gpio_af_set(RS485_GPIO_PORT, GPIO_AF_1, RS485_TX_PIN | RS485_RX_PIN | RS485_EN_PIN);
|
||||
|
||||
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, RS485_TX_PIN | RS485_RX_PIN);
|
||||
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, RS485_TX_PIN | RS485_RX_PIN);
|
||||
|
||||
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, RS485_EN_PIN);
|
||||
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, RS485_EN_PIN);
|
||||
|
||||
/* 配置波特率、数据位、停止位等 */
|
||||
usart_deinit(USART0);
|
||||
usart_baudrate_set(USART0, baudrate);
|
||||
usart_receive_config(USART0, USART_RECEIVE_ENABLE);
|
||||
usart_transmit_config(USART0, USART_TRANSMIT_ENABLE);
|
||||
usart_enable(USART0);
|
||||
}
|
||||
usart_deinit(RS485_PHY);
|
||||
usart_word_length_set(RS485_PHY, USART_WL_8BIT);
|
||||
usart_stop_bit_set(RS485_PHY, USART_STB_1BIT);
|
||||
usart_parity_config(RS485_PHY, USART_PM_NONE);
|
||||
usart_baudrate_set(RS485_PHY, RS485_BAUDRATE);
|
||||
usart_receive_config(RS485_PHY, USART_RECEIVE_ENABLE);
|
||||
usart_transmit_config(RS485_PHY, USART_TRANSMIT_ENABLE);
|
||||
|
||||
void uart1_init(uint32_t baudrate) {
|
||||
rcu_periph_clock_enable(RCU_GPIOA);
|
||||
rcu_periph_clock_enable(RCU_USART1);
|
||||
// USART1 默认引脚为 PA2 (TX), PA3 (RX)
|
||||
gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_2 | GPIO_PIN_3);
|
||||
gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_2 | GPIO_PIN_3);
|
||||
gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_2 | GPIO_PIN_3);
|
||||
usart_deinit(USART1);
|
||||
usart_baudrate_set(USART1, baudrate);
|
||||
usart_receive_config(USART1, USART_RECEIVE_ENABLE);
|
||||
usart_transmit_config(USART1, USART_TRANSMIT_ENABLE);
|
||||
usart_enable(USART1);
|
||||
}
|
||||
usart_driver_assertime_config(RS485_PHY, 0x01);
|
||||
usart_driver_deassertime_config(RS485_PHY, 0x10);
|
||||
|
||||
static uart_printf_port_t g_printf_port = UART_PRINTF_USART0;
|
||||
usart_rs485_driver_enable(RS485_PHY);
|
||||
|
||||
void uart_set_printf_port(uart_printf_port_t port) {
|
||||
g_printf_port = port;
|
||||
}
|
||||
usart_enable(RS485_PHY);
|
||||
|
||||
// printf 重定向,支持多串口
|
||||
int __io_putchar(int ch) {
|
||||
switch (g_printf_port) {
|
||||
case UART_PRINTF_USART0:
|
||||
while (usart_flag_get(USART0, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(USART0, (uint8_t)ch);
|
||||
break;
|
||||
case UART_PRINTF_USART1:
|
||||
while (usart_flag_get(USART1, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(USART1, (uint8_t)ch);
|
||||
break;
|
||||
case UART_PRINTF_BOTH:
|
||||
while (usart_flag_get(USART0, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(USART0, (uint8_t)ch);
|
||||
while (usart_flag_get(USART1, USART_FLAG_TBE) == RESET) {}
|
||||
usart_data_transmit(USART1, (uint8_t)ch);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
nvic_irq_enable(USART0_IRQn, 0);
|
||||
usart_interrupt_enable(RS485_PHY, USART_INT_RBNE);
|
||||
// usart_interrupt_enable(RS485_PHY, USART_INT_IDLE);
|
||||
|
||||
#else
|
||||
rcu_periph_clock_enable(RS485_GPIO_RCU);
|
||||
rcu_periph_clock_enable(RS485_RCU);
|
||||
|
||||
gpio_af_set(RS485_GPIO_PORT, GPIO_AF_1, GPIO_PIN_2 | GPIO_PIN_3);
|
||||
|
||||
/* configure USART Tx&Rx as alternate function push-pull */
|
||||
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, RS485_TX_PIN | RS485_RX_PIN);
|
||||
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_10MHZ, RS485_TX_PIN | RS485_RX_PIN);
|
||||
|
||||
/* configure RS485 EN Pin */
|
||||
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, RS485_EN_PIN);
|
||||
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, RS485_EN_PIN);
|
||||
gpio_bit_write(RS485_GPIO_PORT, RS485_EN_PIN, SET);
|
||||
|
||||
/* USART configure */
|
||||
usart_deinit(RS485_PHY);
|
||||
usart_baudrate_set(RS485_PHY, RS485_BAUDRATE);
|
||||
usart_receive_config(RS485_PHY, USART_RECEIVE_ENABLE);
|
||||
usart_transmit_config(RS485_PHY, USART_TRANSMIT_ENABLE);
|
||||
|
||||
usart_enable(RS485_PHY);
|
||||
|
||||
nvic_irq_enable(USART0_IRQn, 0);
|
||||
usart_interrupt_enable(RS485_PHY, USART_INT_RBNE);
|
||||
usart_interrupt_enable(RS485_PHY, USART_INT_IDLE);
|
||||
|
||||
#endif // RS485_MAX13487
|
||||
}
|
||||
return ch;
|
||||
}
|
||||
|
104
Src/uart_ring_buffer.c
Normal file
104
Src/uart_ring_buffer.c
Normal file
@@ -0,0 +1,104 @@
|
||||
/**
|
||||
* @file uart_ring_buffer.c
|
||||
* @brief 字节环形接收缓冲区的实现。
|
||||
* @details 适用于中断接收(写)与主循环解析(读)的典型串口场景;
|
||||
* 采用“预留一格”区分空/满,最大可用容量为 UART_RX_BUFFER_SIZE-1。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
#include "uart_ring_buffer.h"
|
||||
|
||||
static volatile uint8_t uart_rx_buffer[UART_RX_BUFFER_SIZE];
|
||||
static volatile uint8_t write_index = 0;
|
||||
static volatile uint8_t read_index = 0;
|
||||
static volatile uint32_t dropped_bytes = 0;
|
||||
|
||||
/**
|
||||
* @brief 重置环形缓冲区状态。
|
||||
* @details 将读指针、写指针与丢弃计数清零,不清空数据区内容。
|
||||
* @note 内部工具函数;对外请优先使用 uart_ring_buffer_init()/uart_ring_buffer_clear()。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
static void uart_ring_buffer_reset_state(void) {
|
||||
write_index = 0;
|
||||
read_index = 0;
|
||||
dropped_bytes = 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 初始化环形缓冲区。
|
||||
* @details 调用内部重置逻辑,复位读写索引与丢弃计数,准备接收数据。
|
||||
* @note 若在中断环境使用,初始化前建议关闭相关接收中断以避免并发竞争。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
void uart_ring_buffer_init(void) {
|
||||
uart_ring_buffer_reset_state();
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 获取当前可读的字节数。
|
||||
* @details 通过读/写指针的快照计算可读长度,范围为 [0, UART_RX_BUFFER_SIZE-1]。
|
||||
* @return uint8_t 可读字节数。
|
||||
* @note 预留一个空槽区分“空/满”,因此满时返回 UART_RX_BUFFER_SIZE-1。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
uint8_t uart_ring_buffer_available(void) {
|
||||
/* 使用快照减少并发不一致窗口 */
|
||||
uint8_t w = write_index;
|
||||
uint8_t r = read_index;
|
||||
return (uint8_t)((w + UART_RX_BUFFER_SIZE - r) % UART_RX_BUFFER_SIZE);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 从环形缓冲区读取一个字节。
|
||||
* @details 若缓冲区非空,返回队头字节并推进读指针;若为空,返回 -1。
|
||||
* @return int 读取到的字节(0..255),或 -1 表示缓冲区为空。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
int uart_ring_buffer_get(void) {
|
||||
if (read_index == write_index) return -1; // 空
|
||||
uint8_t data = uart_rx_buffer[read_index];
|
||||
read_index = (read_index + 1) % UART_RX_BUFFER_SIZE;
|
||||
return data;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 向环形缓冲区写入一个字节。
|
||||
* @details 尝试写入一个新字节;若缓冲区已满则丢弃并计数。
|
||||
* @param data 待写入的字节。
|
||||
* @return bool 是否写入成功。
|
||||
* @retval true 写入成功。
|
||||
* @retval false 写入失败(缓冲区已满,数据被丢弃并计数)。
|
||||
* @note 如需“覆盖写入”策略,可在满时先推进读指针再写入。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
bool uart_ring_buffer_put(uint8_t data) {
|
||||
uint8_t next = (write_index + 1) % UART_RX_BUFFER_SIZE;
|
||||
if (next != read_index) { // 缓冲区未满
|
||||
uart_rx_buffer[write_index] = data;
|
||||
write_index = next;
|
||||
return true;
|
||||
} else {
|
||||
/* 缓冲区已满,丢弃新字节并计数 */
|
||||
dropped_bytes++;
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 清空环形缓冲区。
|
||||
* @details 复位读写索引与丢弃计数,相当于逻辑上丢弃所有已接收数据,不擦除数据区内容。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
void uart_ring_buffer_clear(void) {
|
||||
uart_ring_buffer_reset_state();
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief 获取因满而被丢弃的字节累计数量。
|
||||
* @details 写入时缓冲区满会丢弃新字节并累加计数;该计数在 init/clear 时清零。
|
||||
* @return uint32_t 丢弃的累计字节数。
|
||||
* @ingroup RingBuffer
|
||||
*/
|
||||
uint32_t uart_ring_buffer_drop_count(void) {
|
||||
return dropped_bytes;
|
||||
}
|
@@ -7,8 +7,8 @@ set(VERSION "V${VERSION_MAJOR}.${VERSION_MINOR}.${VERSION_PATCH}")
|
||||
string(TIMESTAMP BUILD_DATE "%Y-%m-%d")
|
||||
|
||||
# 编译条件(如IIC类型等)
|
||||
set(IIC_TYPE "AutoDetectDriveCurrent")
|
||||
# set(IIC_TYPE "HW-IIC")
|
||||
# set(IIC_TYPE "AutoDetectDriveCurrent")
|
||||
set(IIC_TYPE "HW-IIC")
|
||||
|
||||
# 其它自定义宏
|
||||
add_definitions(-DIIC_TYPE=${IIC_TYPE})
|
||||
|
Reference in New Issue
Block a user