new function

src/LDC1612.c

@@ -4,36 +4,27 @@
 
 #include "LDC1612.h"
 
-void led_config(void)
+
+void LDC1612_read_sensor_infomation(void)
 {
-    rcu_periph_clock_enable(LED_RCU);
+    uint16_t device_id;
+    uint8_t result;
 
-    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);
+    // 读取设备ID
+    result = IIC_read_16bit(READ_DEVICE_ID, &device_id);
 
-    rcu_periph_clock_enable(LED_TIMER_RCU);
-    timer_deinit(LED_TIMER);
+    if (result == 0) {
+        printf("Device ID: 0x%04X\n", device_id);
+    } else {
+        printf("Failed to read Device ID\n");
+    }
 
-    timer_parameter_struct timer_initpara;
-    timer_struct_para_init(&timer_initpara);
-    timer_initpara.prescaler = 799;
-    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, 2);
 }
 
 
 
+
+
 /**
   * @brief  This function configure the I2C peripheral & GPIO
   * @param[in]  none
@@ -60,6 +51,7 @@ void LDC1612_I2CConfig(void) {
     i2c_ack_config(LDC_I2C, I2C_ACK_ENABLE);
 }
 
+
 /**
  * @brief  向I2C设备寄存器写入数据
  * @param  device_address: 设备地址
@@ -455,6 +447,77 @@ void I2C_Scan(void) {
 }
 
 
+
+/**
+ * @brief  读取16位I2C数据，带有超时机制
+ * @param  reg: 要读取的寄存器地址
+ * @param  value: 存储读取数据的指针
+ * @retval 0: 成功，1: 超时
+ */
+uint8_t IIC_read_16bit(uint8_t reg, uint16_t *value) {
+    uint32_t timeout = 0;
+
+    // 发送启动信号
+    i2c_start_on_bus(I2C0);
+    timeout = 0;
+    while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND)) {
+        if ((timeout++) > I2C_TIME_OUT) return 1;  // 超时
+    }
+
+    // 发送从设备地址和写信号
+    i2c_master_addressing(I2C0, LDC1612_ADDR, I2C_TRANSMITTER);
+    timeout = 0;
+    while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND)) {
+        if ((timeout++) > I2C_TIME_OUT) return 1;  // 超时
+    }
+    i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
+
+    // 发送寄存器地址
+    i2c_data_transmit(I2C0, reg);
+    timeout = 0;
+    while (!i2c_flag_get(I2C0, I2C_FLAG_TBE)) {
+        if ((timeout++) > I2C_TIME_OUT) return 1;  // 超时
+    }
+
+    // 重新启动信号
+    i2c_start_on_bus(I2C0);
+    timeout = 0;
+    while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND)) {
+        if ((timeout++) > I2C_TIME_OUT) return 1;  // 超时
+    }
+
+    // 发送从设备地址和读信号
+    i2c_master_addressing(I2C0, LDC1612_ADDR, I2C_RECEIVER);
+    timeout = 0;
+    while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND)) {
+        if ((timeout++) > I2C_TIME_OUT) return 1;  // 超时
+    }
+    i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
+
+    // 读取数据
+    timeout = 0;
+    while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE)) {
+        if ((timeout++) > I2C_TIME_OUT) return 1;  // 超时
+    }
+    *value = i2c_data_receive(I2C0) << 8;  // 读取高8位
+
+    timeout = 0;
+    while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE)) {
+        if ((timeout++) > I2C_TIME_OUT) return 1;  // 超时
+    }
+    *value |= i2c_data_receive(I2C0);  // 读取低8位
+
+    // 发送停止信号
+    i2c_stop_on_bus(I2C0);
+    timeout = 0;
+    while (I2C_CTL0(I2C0) & I2C_CTL0_STOP) {
+        if ((timeout++) > I2C_TIME_OUT) return 1;  // 超时
+    }
+
+    return 0;  // 成功
+}
+
+
 int LDC_getID(void) {
     uint8_t data[2] = {0};
     uint16_t timeout = 0;

src/main.c

@@ -9,12 +9,37 @@
 #include "gd32e23x.h"
 #include "systick.h"
 #include "gd32e23x_libopt.h"
-
-#include "peripheral.h"
-
 #include "RS485.h"
 #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 = 799;
+    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, 2);
+}
+
 /*!
     \brief      main function
     \param[in]  none
@@ -28,7 +53,7 @@ int main(void)
     RS485_config();
     led_config();
 
-    delay_ms(5000);
+    // delay_ms(5000);
     printf("\r\n");
     printf("XLSW-3DP-LDC1612! V0.0.1\r\n");
     printf("\r\n");
@@ -36,13 +61,11 @@ int main(void)
     LDC1612_I2CConfig();
     // LDC1612_Init();
     // I2C_Scan();
-int ret = 0;
-    ret = LDC_getID();
-    printf("ret:%d\r\n",ret);
+    LDC1612_read_sensor_infomation();
+
+
 
 
-    uint8_t data[2] = {0};
-    uint32_t value = 0;
 
     while(1){
         // LDC1612_read_reg(LDC1612_ADDR, 0x7f, data, 2);