完成LED、RS485、IIC初始化部分代码。

CMakeLists.txt

@@ -25,6 +25,8 @@ set(TARGET_C_SRC
         ${CMAKE_SOURCE_DIR}/src/gd32e23x_it.c
         ${CMAKE_SOURCE_DIR}/src/systick.c
         ${CMAKE_SOURCE_DIR}/src/peripheral.c
+        ${CMAKE_SOURCE_DIR}/src/LDC1612.c
+        ${CMAKE_SOURCE_DIR}/src/RS485.c
 )
 
 add_executable(xlsw_3dp_LDC1612 ${TARGET_C_SRC})

inc/LDC1612.h

@@ -0,0 +1,42 @@
+//
+// Created by dell on 24-12-3.
+//
+
+#ifndef LDC1612_H
+#define LDC1612_H
+
+#include "gd32e23x_it.h"
+#include "gd32e23x.h"
+#include "systick.h"
+#include <stdbool.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define LED_PORT            GPIOA
+#define LED_PIN             GPIO_PIN_7
+#define LED_RCU             RCU_GPIOA
+#define LED_TIMER_RCU       RCU_TIMER16
+#define LED_TIMER           TIMER16
+#define LED_IRQ             TIMER16_IRQn
+
+#define I2C_SPEED 100000
+#define IR_I2C    I2C0
+#define RCU_IR_GPIO RCU_GPIOF
+#define RCU_I2C RCU_I2C0
+#define I2C_SCL_PORT GPIOF
+#define I2C_SCL_PIN GPIO_PIN_1
+#define I2C_SDA_PORT GPIOF
+#define I2C_SDA_PIN GPIO_PIN_0
+#define I2C_GPIO_AF GPIO_AF_1
+
+#define I2C_TIME_OUT    (uint16_t)(5000)
+
+#define SLAVE_ADDR         (0x5A << 1)
+
+
+void led_config(void);
+void LDC1612_I2CConfig(void);
+
+
+#endif //LDC1612_H

inc/RS485.h

@@ -0,0 +1,31 @@
+//
+// Created by dell on 24-12-3.
+//
+
+#ifndef RS485_H
+#define RS485_H
+
+#include "gd32e23x_it.h"
+#include "gd32e23x.h"
+#include "systick.h"
+#include <stdbool.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#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
+
+#define RX_BUFFER_SIZE 64
+
+void RS485_config(void);
+void process_command(char *cmd);
+
+#endif //RS485_H

src/LDC1612.c

@@ -0,0 +1,60 @@
+//
+// Created by dell on 24-12-3.
+//
+
+#include "LDC1612.h"
+
+
+void led_config(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_write(LED_PORT, LED_PIN, SET);
+
+    rcu_periph_clock_enable(LED_TIMER_RCU);
+    timer_deinit(LED_TIMER);
+
+    timer_parameter_struct timer_initpara;
+    timer_struct_para_init(&timer_initpara);
+    timer_initpara.prescaler = 7199;
+    timer_initpara.alignedmode = TIMER_COUNTER_EDGE;
+    timer_initpara.counterdirection = TIMER_COUNTER_UP;
+    timer_initpara.period = 999;
+    timer_initpara.clockdivision = TIMER_CKDIV_DIV1;
+    timer_init(LED_TIMER, &timer_initpara);
+
+    timer_auto_reload_shadow_enable(LED_TIMER);
+    timer_interrupt_enable(LED_TIMER, TIMER_INT_UP);
+
+    timer_enable(LED_TIMER);
+
+    nvic_irq_enable(LED_IRQ, 0);
+}
+
+/**
+  * @brief  This function configure the I2C peripheral & GPIO
+  * @param[in]  none
+  * @param[out] none
+  * @retval None
+  */
+void LDC1612_I2CConfig(void) {
+    rcu_periph_clock_enable(RCU_IR_GPIO);
+    rcu_periph_clock_enable(RCU_I2C);
+
+    gpio_af_set(I2C_SCL_PORT, I2C_GPIO_AF, I2C_SCL_PIN);
+    gpio_af_set(I2C_SDA_PORT, I2C_GPIO_AF, I2C_SDA_PIN);
+
+    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);
+
+    i2c_clock_config(IR_I2C, I2C_SPEED, I2C_DTCY_2);
+
+    i2c_mode_addr_config(IR_I2C, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, SLAVE_ADDR);
+    i2c_enable(IR_I2C);
+    i2c_ack_config(IR_I2C, I2C_ACK_ENABLE);
+}

src/RS485.c

@@ -0,0 +1,59 @@
+//
+// Created by dell on 24-12-3.
+//
+
+#include "RS485.h"
+
+#define MAX_CMD_SIZE 16
+#define BUFSIZE 8
+
+extern uint16_t g_distance_uint16;
+extern uint16_t g_temperature_uint16;
+
+void RS485_config(void) {
+    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);
+}
+
+void process_command(char *cmd) {
+    if (strncmp(cmd, "M1", 2) == 0) {
+        printf("M1 -=-=- OK!\r\n");
+        printf("Distance: %d\r\n", g_distance_uint16);
+    } else if (strncmp(cmd, "M2", 2) == 0) {
+        printf("M2 -=-=- OK!\r\n");
+        printf("Temperature: %d\r\n", g_temperature_uint16);
+        // } else if (strncmp(cmd, "M3", 2) == 0) {
+        //     char *param_str = cmd + 2; // Skip "M3"
+        //     int param = atoi(param_str + 1); // Skip "S" and convert to integer
+        //     if (param >= 0 && param <= 100) {
+        //         printf("M3 with parameter %d -=-=- OK!\r\n", param);
+        //     } else {
+        //         printf("Invalid parameter for M3 command!\r\n");
+        //     }
+    } else {
+        printf("Invalid Command!\r\n");
+    }
+}
+

src/gd32e23x_it.c

@@ -35,6 +35,7 @@ OF SUCH DAMAGE.
 #include "gd32e23x_it.h"
 #include "main.h"
 #include "systick.h"
+#include "LDC1612.h"
 
 /*!
     \brief      this function handles NMI exception
@@ -116,4 +117,27 @@ void TIMER13_IRQHandler(void)
         }
         led_status = !led_status;
     }
+}
+
+/**
+  * @brief  This function handles TIMER5 interrupt request.
+  * @param[in]  none
+  * @param[out] none
+  * @retval None
+  */
+void TIMER16_IRQHandler(void) {
+    if (timer_interrupt_flag_get(LED_TIMER, TIMER_INT_FLAG_UP) == SET)
+    {
+        timer_interrupt_flag_clear(LED_TIMER, TIMER_INT_FLAG_UP);
+        static uint8_t led_status = 0;
+        if (led_status)
+        {
+            gpio_bit_write(LED_PORT, LED_PIN, RESET);
+            timer_autoreload_value_config(LED_TIMER, 19200);
+        } else {
+            gpio_bit_write(LED_PORT, LED_PIN, SET);
+            timer_autoreload_value_config(LED_TIMER, 800);
+        }
+        led_status = !led_status;
+    }
 }

src/main.c

@@ -12,6 +12,9 @@
 
 #include "peripheral.h"
 
+#include "RS485.h"
+#include "LDC1612.h"
+
 /*!
     \brief      main function
     \param[in]  none
@@ -22,11 +25,13 @@ int main(void)
 {
     /* configure systick */
     systick_config();
-    usart_config();
+    RS485_config();
-    led_blink_config();
+    led_config();
 
     delay_ms(5000);
-    printf("system start!\r\n");
+    printf("\r\n");
+    printf("XLSW-3DP-LDC1612! V0.0.1\r\n");
+    printf("\r\n");
 
     while(1){
     printf("hello world!\r\n");

src/peripheral.c

@@ -40,7 +40,7 @@ void led_blink_config(void)
 {
     rcu_periph_clock_enable(RCU_GPIOB);
 
-    gpio_mode_set(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_1);
+    gpio_mode_set(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_1);
     gpio_output_options_set(GPIOB, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, GPIO_PIN_1);
     gpio_bit_write(GPIOB, GPIO_PIN_1, SET);