hulk/xlsw_3dp_LDC1612
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在board_config.h文件中添加#define SOFTWARE_IIC选项用以选择使用软件IIC还是硬件IIC，如果注释掉该行则为硬件IIC方式。并完整实现软件IIC功能。

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This commit is contained in:
yelvlab 2024-12-29 22:07:49 +08:00
parent 9b9f14f97a
commit 0ac221ce6f
10 changed files with 187 additions and 89 deletions
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15
inc/board_config.h
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@ -5,6 +5,10 @@
#ifndef BOARD_CONFIG_H
#define BOARD_CONFIG_H
#define SOFTWARE_IIC
// #define DEBUG_VERBOES
/******************************************************************************/
#define I2C_SPEED 20000
@ -18,4 +22,15 @@
/******************************************************************************/
#define RS485_RCU RCU_USART0
#define RS485_GPIO_RCU RCU_GPIOA
#define RS485_GPIO_PORT GPIOA
#define RS485_TX_PIN GPIO_PIN_2
#define RS485_RX_PIN GPIO_PIN_3
#define RS485_PHY USART0
#define RS485_BAUDRATE 115200U
#define RS485_EN_PIN GPIO_PIN_1
/******************************************************************************/
#endif //BOARD_CONFIG_H

4
inc/ldc1612.h
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@ -13,8 +13,12 @@
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "board_config.h"
#include "soft_i2c.h"
#include "i2c.h"
/***************************************************************************/
#define LDC1612_ADDR (0x2B << 1)
/*Register Rddr*/

10
inc/soft_i2c.h
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@ -22,6 +22,12 @@
/******************************************************************************/
#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);
@ -40,4 +46,8 @@ 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

7
inc/tmp112.h
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@ -13,7 +13,14 @@
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "board_config.h"
#ifdef SOFTWARE_IIC
#include "soft_i2c.h"
#else
#include "i2c.h"
#endif
/******************************************************************************/

2
src/i2c.c
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@ -32,6 +32,8 @@ void i2c_gpio_config(void) {
\retval none
*/
void i2c_config(void) {
/* configure I2C GPIO */
i2c_gpio_config();
/* enable I2C clock */
rcu_periph_clock_enable(RCU_I2C);
/* configure I2C clock */

73
src/ldc1612.c
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@ -12,7 +12,12 @@ void ldc1612_set_conversion_time(uint8_t channel, uint16_t result) {
uint8_t data[2] = {0};
data[0] = (result >> 8) & 0xFF;
data[1] = result & 0xFF;
#ifdef SOFTWARE_IIC
soft_i2c_write_16bits(LDC1612_ADDR, SET_CONVERSION_TIME_REG_START + channel, data);
#else
i2c_write_16bits(LDC1612_ADDR, SET_CONVERSION_TIME_REG_START + channel, data);
#endif
}
/** @brief set conversion offset.
@ -23,7 +28,12 @@ void ldc1612_set_conversion_offset(uint8_t channel, uint16_t result) {
uint8_t data[2] = {0};
data[0] = (result >> 8) & 0xFF;
data[1] = result & 0xFF;
#ifdef SOFTWARE_IIC
soft_i2c_write_16bits(LDC1612_ADDR, SET_CONVERSION_OFFSET_REG_START + channel, data);
#else
i2c_write_16bits(LDC1612_ADDR, SET_CONVERSION_OFFSET_REG_START + channel, data);
#endif
}
/** @brief Before conversion,wait LC sensor stabilize for a short time.
@ -34,7 +44,11 @@ void ldc1612_set_LC_stabilize_time(uint8_t channel, uint16_t result) {
uint8_t data[2] = {0};
data[0] = (result >> 8) & 0xFF;
data[1] = result & 0xFF;
#ifdef SOFTWARE_IIC
soft_i2c_write_16bits(LDC1612_ADDR, SET_LC_STABILIZE_REG_START + channel, data);
#else
i2c_write_16bits(LDC1612_ADDR, SET_LC_STABILIZE_REG_START + channel, data);
#endif
}
/** @brief set input frequency divide and fref divide.
@ -65,8 +79,11 @@ void ldc1612_set_freq_divide(uint8_t channel) {
data[0] = (value >> 8) & 0xFF;
data[1] = value & 0xFF;
// printf("\tFIN_DIV: %d, FREF_DIV: %d\r\n", fin_div, freq_div);
#ifdef SOFTWARE_IIC
soft_i2c_write_16bits(LDC1612_ADDR, SET_FREQ_REG_START + channel, data);
#else
i2c_write_16bits(LDC1612_ADDR, SET_FREQ_REG_START + channel, data);
#endif
}
/** @brief Error output config.
@ -77,7 +94,11 @@ void ldc1612_set_error_config(uint16_t value) {
data[0] = (value >> 8) & 0xFF;
data[1] = value & 0xFF;
#ifdef SOFTWARE_IIC
soft_i2c_write_16bits(LDC1612_ADDR, ERROR_CONFIG_REG, data);
#else
i2c_write_16bits(LDC1612_ADDR, ERROR_CONFIG_REG, data);
#endif
}
/** @brief mux config.
@ -88,7 +109,11 @@ void ldc1612_set_mux_config(uint16_t value) {
data[0] = (value >> 8) & 0xFF;
data[1] = value & 0xFF;
#ifdef SOFTWARE_IIC
soft_i2c_write_16bits(LDC1612_ADDR, MUL_CONFIG_REG, data);
#else
i2c_write_16bits(LDC1612_ADDR, MUL_CONFIG_REG, data);
#endif
}
/** @brief reset sensor.
@ -98,7 +123,12 @@ void ldc1612_reset_sensor(void) {
uint8_t data[2] = {0};
data[0] = 0x80;
data[1] = 0x00;
#ifdef SOFTWARE_IIC
soft_i2c_write_16bits(LDC1612_ADDR, SENSOR_RESET_REG, data);
#else
i2c_write_16bits(LDC1612_ADDR, SENSOR_RESET_REG, data);
#endif
}
/** @brief set drive current of sensor.
@ -109,7 +139,11 @@ void ldc1612_set_drive_current(uint8_t channel, uint16_t value) {
data[0] = (value >> 8) & 0xFF;
data[1] = value & 0xFF;
#ifdef SOFTWARE_IIC
soft_i2c_write_16bits(LDC1612_ADDR, SET_DRIVER_CURRENT_REG + channel, data);
#else
i2c_write_16bits(LDC1612_ADDR, SET_DRIVER_CURRENT_REG + channel, data);
#endif
}
/** @brief Main config part of sensor.Contains select channel、start conversion、sleep mode、sensor activation mode、INT pin disable ..
@ -120,7 +154,11 @@ void ldc1612_set_sensor_config(uint16_t value) {
data[0] = (value >> 8) & 0xFF;
data[1] = value & 0xFF;
#ifdef SOFTWARE_IIC
soft_i2c_write_16bits(LDC1612_ADDR, SENSOR_CONFIG_REG, data);
#else
i2c_write_16bits(LDC1612_ADDR, SENSOR_CONFIG_REG, data);
#endif
}
void ldc1612_single_ch0_config(void) {
@ -141,23 +179,41 @@ void ldc1612_single_ch0_config(void) {
void ldc1612_iic_get_sensor_infomation(void) {
uint8_t data[2] = {0};
// ldc1612_iic_read_16bits(READ_MANUFACTURER_ID, data);
#ifdef SOFTWARE_IIC
soft_i2c_read_16bits(LDC1612_ADDR, READ_MANUFACTURER_ID, data);
#else
i2c_read_16bits(LDC1612_ADDR, READ_MANUFACTURER_ID, data);
#endif
printf("\tManufacturer: 0x%x", (data[0] << 8) | data[1]);
// ldc1612_iic_read_16bits(READ_DEVICE_ID, data);
#ifdef SOFTWARE_IIC
soft_i2c_read_16bits(LDC1612_ADDR, READ_DEVICE_ID, data);
#else
i2c_read_16bits(LDC1612_ADDR, READ_DEVICE_ID, data);
#endif
printf("\tDevice: 0x%x", (data[0] << 8) | data[1]);
}
uint16_t ldc1612_get_manufacturer_id(void) {
uint8_t data[2] = {0};
#ifdef SOFTWARE_IIC
soft_i2c_read_16bits(LDC1612_ADDR, READ_MANUFACTURER_ID, data);
#else
i2c_read_16bits(LDC1612_ADDR, READ_MANUFACTURER_ID, data);
#endif
return (data[0] << 8) | data[1];
}
uint16_t ldc1612_get_deveice_id(void) {
uint8_t data[2] = {0};
#ifdef SOFTWARE_IIC
soft_i2c_read_16bits(LDC1612_ADDR, READ_DEVICE_ID, data);
#else
i2c_read_16bits(LDC1612_ADDR, READ_DEVICE_ID, data);
#endif
return (data[0] << 8) | data[1];
}
@ -169,11 +225,18 @@ uint32_t ldc1612_get_raw_channel_result(uint8_t channel) {
uint32_t raw_value = 0;
uint8_t value[2] = {0};
// ldc1612_iic_read_16bits(CONVERTION_RESULT_REG_START + channel, value);
#ifdef SOFTWARE_IIC
soft_i2c_read_16bits(LDC1612_ADDR, CONVERTION_RESULT_REG_START + channel, value);
#else
i2c_read_16bits(LDC1612_ADDR, CONVERTION_RESULT_REG_START + channel, value);
#endif
raw_value |= (uint32_t) ((value[0] << 8) | value[1]) << 16;
// ldc1612_iic_read_16bits(CONVERTION_RESULT_REG_START + channel + 1, value);
#ifdef SOFTWARE_IIC
soft_i2c_read_16bits(LDC1612_ADDR, CONVERTION_RESULT_REG_START + channel + 1, value);
#else
i2c_read_16bits(LDC1612_ADDR, CONVERTION_RESULT_REG_START + channel + 1, value);
#endif
raw_value |= (uint32_t) ((value[0] << 8) | value[1]);
return ldc1612_parse_raw_result(raw_value);
}

73
src/main.c
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@ -12,12 +12,14 @@
#include "rs485.h"
#include "led.h"
#include "i2c.h"
#include "soft_i2c.h"
#include "ldc1612.h"
#include "tmp112.h"
#include "board_config.h"
uint32_t g_temperature_uint32;
uint32_t g_eddy_current_value_uint32;
#ifdef SOFTWARE_IIC
#include "soft_i2c.h"
#else
#include "i2c.h"
#endif
void watchdog_init(void) {
/* Enable the LSI clock */
@ -59,73 +61,16 @@ int main(void) {
// watchdog_init();
/* configure I2C */
// i2c_gpio_config();
// i2c_config();
soft_i2c_config();
// ldc1612_iic_get_sensor_infomation();
ldc1612_iic_get_sensor_infomation();
/* configure LDC1612 */
// ldc1612_single_ch0_config();
uint8_t data[2] = {0};
printf("Start\n");
ldc1612_single_ch0_config();
/* Initialize watchdog */
watchdog_init();
while (1) {
soft_i2c_config();
printf("111\n");
soft_i2c_start();
soft_i2c_send_byte((0x2B << 1));
if (!soft_i2c_wait_ack())
{
printf("NACK\n");
}
soft_i2c_send_byte(0x7E);
if (!soft_i2c_wait_ack())
{
printf("NACK\n");
}
soft_i2c_delay();
soft_i2c_start();
soft_i2c_send_byte((0x2B << 1) + 1);
if (!soft_i2c_wait_ack())
{
printf("NACK\n");
}
soft_i2c_delay();
data[0] = soft_i2c_receive_byte(1);
data[1] = soft_i2c_receive_byte(0);
delay_us(5);
soft_i2c_stop();
printf("0x%x 0x%x\n", data[0], data[1]);
// i2c_start();
// delay_ms(1);
// i2c_stop();
// delay_ms(1);
delay_ms(1000);
// g_eddy_current_value_uint32 = 0;
// g_temperature_uint32 = 0;
// g_eddy_current_value_uint32 = ldc1612_get_raw_channel_result(CHANNEL_0);
// g_temperature_uint32 = tmp112a_get_raw_channel_result();
printf("1\n");
delay_ms(99);
fwdgt_counter_reload();
}

3
src/rs485.c
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@ -4,9 +4,6 @@
#include "rs485.h"
extern uint32_t g_temperature_uint32;
extern uint32_t g_eddy_current_value_uint32;
uint8_t package_header[3] = {0xB5, 0xF0, 0x04};
uint8_t package_data[4] = {0};

83
src/soft_i2c.c
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@ -47,11 +47,11 @@ void soft_i2c_start(void) {
// sda_out();
I2C_SDA_HIGH();
I2C_SCL_HIGH();
i2c_delay();
soft_i2c_delay();
I2C_SDA_LOW();
i2c_delay();
soft_i2c_delay();
I2C_SCL_LOW();
// i2c_delay();
// soft_i2c_delay();
// 从全高开始，SCL为高期间，SDA下降沿表示start信号，再拉低SCL
}
@ -65,9 +65,9 @@ void soft_i2c_stop(void) {
// sda_out();
I2C_SCL_LOW();
I2C_SDA_LOW();
i2c_delay();
soft_i2c_delay();
I2C_SCL_HIGH();
i2c_delay();
soft_i2c_delay();
I2C_SDA_HIGH();
// 从全低开始，SCL为高期间，SDA上升沿表示stop
}
@ -81,11 +81,11 @@ void soft_i2c_stop(void) {
void soft_i2c_send_ack(void) {
// sda_out();
I2C_SDA_LOW();
i2c_delay();
soft_i2c_delay();
I2C_SCL_HIGH();
i2c_delay();
soft_i2c_delay();
I2C_SCL_LOW();
i2c_delay();
soft_i2c_delay();
I2C_SDA_HIGH();
// SCL产生一个正常的时钟周期，其间SDA始终为低电平，表示ACK
}
@ -99,11 +99,11 @@ void soft_i2c_send_ack(void) {
void soft_i2c_send_nack(void) {
// sda_out();
I2C_SDA_HIGH();
i2c_delay();
soft_i2c_delay();
I2C_SCL_HIGH();
i2c_delay();
soft_i2c_delay();
I2C_SCL_LOW();
i2c_delay();
soft_i2c_delay();
I2C_SDA_HIGH();
// SCL产生一个正常的时钟周期，其间SDA始终为高电平，表示NACK
}
@ -117,9 +117,9 @@ void soft_i2c_send_nack(void) {
uint8_t soft_i2c_wait_ack(void) {
// sda_in();
I2C_SDA_HIGH();
i2c_delay();
soft_i2c_delay();
I2C_SCL_HIGH();
i2c_delay();
soft_i2c_delay();
uint8_t ack = !I2C_SDA_READ();
//ACK信号是第九个时钟期间，SDA被从机在SCL高期间，拉低并保持低电平。此处判断SDA是否被拉低，被拉低则返回0，取反为1，表示收到ACK
I2C_SCL_LOW();
@ -141,9 +141,9 @@ void soft_i2c_send_byte(uint8_t byte) {
I2C_SDA_LOW(); //SCL低电平期间，SDA低电平表示0
}
byte <<= 1; //左移一位，把原本第二位的数据移到第一位，再判断高低电平
i2c_delay();
soft_i2c_delay();
I2C_SCL_HIGH(); //SCL拉高电平，SDA电平状态保持不变
i2c_delay();
soft_i2c_delay();
I2C_SCL_LOW(); //SCL拉低电平
delay_us(5);
}
@ -163,12 +163,12 @@ uint8_t soft_i2c_receive_byte(uint8_t ack) {
for (int i = 0; i < 8; i++) {
byte <<= 1;
I2C_SCL_HIGH();
i2c_delay();
soft_i2c_delay();
if (I2C_SDA_READ()) {
byte |= 0x01;
}
I2C_SCL_LOW();
i2c_delay();
soft_i2c_delay();
}
if (ack) {
soft_i2c_send_ack();
@ -176,4 +176,53 @@ uint8_t soft_i2c_receive_byte(uint8_t ack) {
soft_i2c_send_nack();
}
return byte;
}
uint8_t soft_i2c_write_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t data[2]) {
soft_i2c_start();
soft_i2c_send_byte(slave_addr);
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()){}
soft_i2c_stop();
return SOFT_I2C_OK;
}
uint8_t soft_i2c_read_16bits(uint8_t slave_addr, uint8_t reg_addr, uint8_t *data)
{
soft_i2c_start();
soft_i2c_send_byte(slave_addr);
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_start();
soft_i2c_send_byte(slave_addr | 0x01);
if (!soft_i2c_wait_ack()) {
soft_i2c_stop();
return SOFT_I2C_FAIL;
}
soft_i2c_delay();
data[0] = soft_i2c_receive_byte(1);
data[1] = soft_i2c_receive_byte(0);
soft_i2c_stop();
return SOFT_I2C_OK;
}

6
src/tmp112.c
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@ -9,7 +9,13 @@ uint32_t tmp112a_get_raw_channel_result(void) {
uint8_t value[2] = {0};
// ldc1612_iic_read_16bits(CONVERTION_RESULT_REG_START + channel, value);
#ifdef SOFTWARE_IIC
soft_i2c_read_16bits(TMP112A_ADDR, 0x00, value);
#else
i2c_read_16bits(TMP112A_ADDR, 0x00, value);
#endif
raw_value = ((uint16_t) (value[0] << 4) | (value[1]>>4));
return (raw_value * 625);
}