inc/LDC1612.h

@@ -13,9 +13,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-#define LDC1612_ADDR         (0x2B << 1)
-#define TMP112A_ADDR         (0x49 << 1)
-
 /*Register Rddr*/
 /***************************************************************************/
 #define CONVERTION_RESULT_REG_START             0X00
@@ -36,6 +33,9 @@
 
 /******************************************************************************/
 
+#define I2C_TIME_OUT    (uint16_t)(10000)
+#define LDC_I2C       I2C0
+#define I2C_SPEED 400000
 
 typedef enum {
     I2C_START = 0,
@@ -45,7 +45,10 @@ typedef enum {
     I2C_STOP
 } i2c_process_enum;
 
-#define I2C_SPEED 400000
+#define I2C_OK          1
+#define I2C_FAIL        0
+#define I2C_END         1
+
 #define RCU_IR_GPIO RCU_GPIOF
 #define RCU_I2C RCU_I2C0
 #define I2C_SCL_PORT GPIOF
@@ -54,13 +57,32 @@ typedef enum {
 #define I2C_SDA_PIN GPIO_PIN_0
 #define I2C_GPIO_AF GPIO_AF_1
 
-#define I2C_TIME_OUT    (uint16_t)(10000)
+#define LDC1612_ADDR         (0x2B << 1)
 
-void I2C_config(void);
-void I2C_scan(void);
-// uint8_t IIC_read_16bit(uint8_t reg, uint16_t *value);
-// void LDC1612_read_sensor_infomation(void);
+// LDC1612 寄存器地址
+#define RCOUNT0_ADDR          0x08
+#define SETTLECOUNT0_ADDR     0x10
+#define CLOCK_DIVIDERS0_ADDR  0x14
+#define ERROR_CONFIG_ADDR     0x19
+#define MUX_CONFIG_ADDR       0x1B
+#define DRIVE_CURRENT0_ADDR   0x1E
+#define CONFIG_ADDR           0x1A
 
-uint32_t TMP112A_ReadTemperature(void);
+
+
+void LDC1612_read_sensor_infomation(void);
+
+void LDC1612_I2CConfig(void);
+void LDC1612_Init(void);
+int LDC1612_read_reg(uint8_t device_address, uint8_t reg_address, uint8_t *data, uint16_t length);
+int i2c_write_reg(uint8_t device_address, uint8_t *data);
+
+uint8_t eeprom_byte_write_timeout(uint8_t device_address, uint8_t *data);
+
+void I2C_Scan(void);
+
+uint8_t IIC_read_16bit(uint8_t reg, uint16_t *value);
+
+int LDC_getID(void);
 
 #endif //LDC1612_H

src/LDC1612.c

@@ -5,8 +5,33 @@
 #include "LDC1612.h"
 
 
+void LDC1612_read_sensor_infomation(void)
+{
+    uint16_t device_id;
+    uint8_t result;
 
-void I2C_config(void) {
+    // 读取设备ID
+    result = IIC_read_16bit(READ_DEVICE_ID, &device_id);
+
+    if (result == 0) {
+        printf("Device ID: 0x%04X\n", device_id);
+    } else {
+        printf("Failed to read Device ID\n");
+    }
+
+}
+
+
+
+
+
+/**
+  * @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);
 
@@ -19,26 +44,357 @@ void I2C_config(void) {
     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(I2C0, I2C_SPEED, I2C_DTCY_2);
+    i2c_clock_config(LDC_I2C, I2C_SPEED, I2C_DTCY_2);
 
-    i2c_mode_addr_config(I2C0, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, 0x72);
-    i2c_enable(I2C0);
-    i2c_ack_config(I2C0, I2C_ACK_ENABLE);
+    i2c_mode_addr_config(LDC_I2C, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, LDC1612_ADDR);
+    i2c_enable(LDC_I2C);
+    i2c_ack_config(LDC_I2C, I2C_ACK_ENABLE);
 }
 
-// void LDC1612_Init(void) {
-//     uint8_t RCOUNT0_ALL[3]={SET_CONVERSION_TIME_REG_START,0x05,0x36};//csdn
-//     uint8_t SETTLECOUNT0_ALL[3]={SET_LC_STABILIZE_REG_START,0x00,0x0a};
-//     uint8_t CLOCK_DIVIDERS0_ALL[3]={SET_FREQ_REG_START,0x10,0x02};
-//     uint8_t ERROR_CONFIG_ALL[3]={ERROR_CONFIG_REG,0x00,0x00};
-//     uint8_t MUX_CONFIG_ALL[3]={MUL_CONFIG_REG,0x82,0x0c};
-//     uint8_t DRIVE_CURRENT0_ALL[3]={SET_DRIVER_CURRENT_REG,0x90,0x00};
-//     uint8_t CONFIG_ALL[3]={SENSOR_CONFIG_REG,0x14,0x01};//csdn
+
+/**
+ * @brief  向I2C设备寄存器写入数据
+ * @param  device_address: 设备地址
+ * @param  data: 要写入的数据
+ * @retval int: 0表示成功，-1表示超时
+ */
+int i2c_write_reg(uint8_t device_address, uint8_t *data)
+{
+    uint32_t timeout = 0;
+    printf("debug tag- 0\r\n");
+    // 确保 I2C 总线空闲
+    while (i2c_flag_get(LDC_I2C, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout >= I2C_TIME_OUT) {
+        printf("debug tag- 1-\r\n");
+        return -1; // 超时返回错误
+    }
+    i2c_start_on_bus(LDC_I2C);
+    timeout = 0;
+    printf("debug tag- 1\r\n");
+
+    // 等待起始条件发送完成
+    while (!i2c_flag_get(LDC_I2C, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout >= I2C_TIME_OUT) {
+        return -1; // 超时返回错误
+    }
+    i2c_master_addressing(LDC_I2C, device_address, I2C_TRANSMITTER);
+    timeout = 0;
+    printf("debug tag- 2\r\n");
+
+    // 等待地址发送完成
+    while (!i2c_flag_get(LDC_I2C, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout >= I2C_TIME_OUT) {
+        printf("debug tag- 3-\r\n");
+        return -1; // 超时返回错误
+    }
+    i2c_flag_clear(LDC_I2C, I2C_FLAG_ADDSEND);
+    timeout = 0;
+    printf("debug tag- 3\r\n");
+
+    // 发送寄存器地址和数据
+    for (int i = 0; i < 3; i++) {
+        while (!i2c_flag_get(LDC_I2C, I2C_FLAG_TBE) && (timeout < I2C_TIME_OUT))
+            timeout++;
+        if (timeout >= I2C_TIME_OUT) {
+            return -1; // 超时返回错误
+        }
+        i2c_data_transmit(LDC_I2C, data[i]);
+        printf("iic_value:%x\r\n", data[i]);
+        timeout = 0;
+    }
+    timeout = 0;
+
+    // 生成停止条件
+    while (!i2c_flag_get(LDC_I2C, I2C_FLAG_BTC) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout >= I2C_TIME_OUT) {
+        return -1; // 超时返回错误
+    }
+    i2c_stop_on_bus(LDC_I2C);
+    timeout = 0;
+
+    // 确保停止条件已发送完成
+    while (i2c_flag_get(LDC_I2C, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout >= I2C_TIME_OUT) {
+        return -1; // 超时返回错误
+    }
+
+    printf("test info\r\n");
+    return 0;
+}
+
+uint8_t eeprom_byte_write_timeout(uint8_t device_address, uint8_t *data)
+{
+    uint8_t state = I2C_START;
+    uint16_t timeout = 0;
+    uint8_t i2c_timeout_flag = 0;
+
+    /* enable acknowledge */
+    i2c_ack_config(LDC_I2C, I2C_ACK_ENABLE);
+    while(!(i2c_timeout_flag)) {
+        switch(state) {
+        case I2C_START:
+            /* i2c master sends start signal only when the bus is idle */
+            while(i2c_flag_get(LDC_I2C, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT)) {
+                timeout++;
+            }
+            if(timeout < I2C_TIME_OUT) {
+                i2c_start_on_bus(LDC_I2C);
+                timeout = 0;
+                state = I2C_SEND_ADDRESS;
+            } else {
+                timeout = 0;
+                state   = I2C_START;
+                printf("i2c bus is busy in WRITE BYTE!\n");
+            }
+            break;
+        case I2C_SEND_ADDRESS:
+            /* i2c master sends START signal successfully */
+            while((!i2c_flag_get(LDC_I2C, I2C_FLAG_SBSEND)) && (timeout < I2C_TIME_OUT)) {
+                timeout++;
+            }
+            if(timeout < I2C_TIME_OUT) {
+                i2c_master_addressing(LDC_I2C, device_address, I2C_TRANSMITTER);
+                timeout = 0;
+                state = I2C_CLEAR_ADDRESS_FLAG;
+            } else {
+                timeout = 0;
+                state = I2C_START;
+                printf("i2c master sends start signal timeout in WRITE BYTE!\n");
+            }
+            break;
+        case I2C_CLEAR_ADDRESS_FLAG:
+            /* address flag set means i2c slave sends ACK */
+            while((!i2c_flag_get(LDC_I2C, I2C_FLAG_ADDSEND)) && (timeout < I2C_TIME_OUT)) {
+                timeout++;
+            }
+            if(timeout < I2C_TIME_OUT) {
+                i2c_flag_clear(LDC_I2C, I2C_FLAG_ADDSEND);
+                timeout = 0;
+                state = I2C_TRANSMIT_DATA;
+            } else {
+                timeout = 0;
+                state = I2C_START;
+                printf("i2c master clears address flag timeout in WRITE BYTE!\n");
+            }
+            break;
+        case I2C_TRANSMIT_DATA:
+            /* wait until the transmit data buffer is empty */
+            while((!i2c_flag_get(LDC_I2C, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) {
+                timeout++;
+            }
+            if(timeout < I2C_TIME_OUT) {
+                /* send the EEPROM's internal address to write to : only one byte address */
+                i2c_data_transmit(LDC_I2C, data[0]);
+                timeout = 0;
+            } else {
+                timeout = 0;
+                state = I2C_START;
+                printf("i2c master sends data timeout in WRITE BYTE!\n");
+            }
+
+            /* wait until BTC bit is set */
+            while((!i2c_flag_get(LDC_I2C, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) {
+                timeout++;
+            }
+            if(timeout < I2C_TIME_OUT) {
+                /* send the EEPROM's internal address to write to : only one byte address */
+                i2c_data_transmit(LDC_I2C, data[1]);
+                timeout = 0;
+            } else {
+                timeout = 0;
+                state = I2C_START;
+                printf("i2c master sends data timeout in WRITE 1 BYTE!\n");
+            }
+            /* wait until BTC bit is set */
+            while((!i2c_flag_get(LDC_I2C, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) {
+                timeout++;
+            }
+            if(timeout < I2C_TIME_OUT) {
+                /* send the EEPROM's internal address to write to : only one byte address */
+                i2c_data_transmit(LDC_I2C, data[2]);
+                timeout = 0;
+            } else {
+                timeout = 0;
+                state = I2C_START;
+                printf("i2c master sends data timeout in WRITE 2 BYTE!\n");
+            }
+            /* wait until BTC bit is set */
+            while((!i2c_flag_get(LDC_I2C, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) {
+                timeout++;
+            }
+            if(timeout < I2C_TIME_OUT) {
+                state = I2C_STOP;
+                timeout = 0;
+            } else {
+                timeout = 0;
+                state = I2C_START;
+                printf("i2c master sends data timeout in WRITE BYTE!\n");
+            }
+            break;
+        case I2C_STOP:
+            /* send a stop condition to I2C bus */
+            i2c_stop_on_bus(LDC_I2C);
+            /* i2c master sends STOP signal successfully */
+            while((I2C_CTL0(LDC_I2C) & I2C_CTL0_STOP) && (timeout < I2C_TIME_OUT)) {
+                timeout++;
+            }
+            if(timeout < I2C_TIME_OUT) {
+                timeout = 0;
+                state = I2C_END;
+                i2c_timeout_flag = I2C_OK;
+            } else {
+                timeout = 0;
+                state = I2C_START;
+                printf("i2c master sends stop signal timeout in WRITE BYTE!\n");
+            }
+            break;
+        default:
+            state = I2C_START;
+            i2c_timeout_flag = I2C_OK;
+            timeout = 0;
+            printf("i2c master sends start signal in WRITE BYTE.\n");
+            break;
+        }
+    }
+    return I2C_END;
+}
+
+void LDC1612_Init(void) {
+    uint8_t RCOUNT0_ALL[3]={RCOUNT0_ADDR,0x05,0x36};//csdn
+    uint8_t SETTLECOUNT0_ALL[3]={SETTLECOUNT0_ADDR,0x00,0x0a};
+    uint8_t CLOCK_DIVIDERS0_ALL[3]={CLOCK_DIVIDERS0_ADDR,0x10,0x02};
+    uint8_t ERROR_CONFIG_ALL[3]={ERROR_CONFIG_ADDR,0x00,0x00};
+    uint8_t MUX_CONFIG_ALL[3]={MUX_CONFIG_ADDR,0x82,0x0c};
+    uint8_t DRIVE_CURRENT0_ALL[3]={DRIVE_CURRENT0_ADDR,0x90,0x00};
+    uint8_t CONFIG_ALL[3]={CONFIG_ADDR,0x14,0x01};//csdn
+
+    // LDC1612_I2CConfig();
+
+    // int ret = i2c_write_reg(LDC1612_ADDR, RCOUNT0_ALL);
     //
-// }
+    // printf("ret:%d\r\n",ret);
+    i2c_write_reg(LDC1612_ADDR, RCOUNT0_ALL);
+    // eeprom_byte_write_timeout(LDC1612_ADDR, SETTLECOUNT0_ALL);
+    delay_ms(100);
+    i2c_write_reg(LDC1612_ADDR, SETTLECOUNT0_ALL);
+    delay_ms(100);
+    // i2c_write_reg(LDC1612_ADDR, CLOCK_DIVIDERS0_ALL);
+    // delay_ms(100);
+    // i2c_write_reg(LDC1612_ADDR, ERROR_CONFIG_ALL);
+    // delay_ms(100);
+    // i2c_write_reg(LDC1612_ADDR, MUX_CONFIG_ALL);
+    // delay_ms(100);
+    // i2c_write_reg(LDC1612_ADDR, DRIVE_CURRENT0_ALL);
+    // delay_ms(100);
+    // i2c_write_reg(LDC1612_ADDR, CONFIG_ALL);
+}
 
+/**
+ * @brief  从I2C设备寄存器读取数据
+ * @param  device_address: 设备地址
+ * @param  reg_address: 寄存器地址
+ * @param  data: 存储读取数据的缓冲区
+ * @param  length: 要读取的数据长度
+ * @retval int: 0表示成功，-1表示超时
+ */
+int LDC1612_read_reg(uint8_t device_address, uint8_t reg_address, uint8_t *data, uint16_t length)
+{
+    uint32_t timeout = 0;
 
-void I2C_scan(void) {
+    i2c_ack_config(LDC_I2C, I2C_ACK_ENABLE);
+
+    // 判断总线是否忙
+    while (i2c_flag_get(LDC_I2C, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout >= I2C_TIME_OUT) {
+        return -1; // 超时返回错误
+    }
+    i2c_start_on_bus(LDC_I2C); //发送开始信号
+    timeout = 0;
+
+    // 等待起始条件发送完成
+    while (!i2c_flag_get(LDC_I2C, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout >= I2C_TIME_OUT) {
+        return -1; // 超时返回错误
+    }
+    i2c_master_addressing(LDC_I2C, device_address, I2C_TRANSMITTER); //设置为发送模式
+    timeout = 0;
+
+    // 等待地址发送完成
+    while (!i2c_flag_get(LDC_I2C, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout >= I2C_TIME_OUT) {
+        return -1; // 超时返回错误
+    }
+    i2c_flag_clear(LDC_I2C, I2C_FLAG_ADDSEND);
+    timeout = 0;
+
+    // 开始接收数据
+    while (!i2c_flag_get(LDC_I2C, I2C_FLAG_TBE) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout >= I2C_TIME_OUT) {
+        return -1; // 超时返回错误
+    }
+    i2c_data_transmit(LDC_I2C, reg_address); //发送寄存器地址
+    timeout = 0;
+
+    // 生成重复起始条件
+    while (!i2c_flag_get(LDC_I2C, I2C_FLAG_BTC) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout >= I2C_TIME_OUT) {
+        return -1; // 超时返回错误
+    }
+    i2c_start_on_bus(LDC_I2C);
+    timeout = 0;
+
+    // 等待重复起始条件发送完成
+    while (!i2c_flag_get(LDC_I2C, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout >= I2C_TIME_OUT) {
+        return -1; // 超时返回错误
+    }
+    i2c_master_addressing(LDC_I2C, device_address, I2C_RECEIVER);
+    timeout = 0;
+
+    // 等待地址发送完成
+    while (!i2c_flag_get(LDC_I2C, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout >= I2C_TIME_OUT) {
+        return -1; // 超时返回错误
+    }
+    i2c_flag_clear(LDC_I2C, I2C_FLAG_ADDSEND);
+    timeout = 0;
+
+// 读取数据
+for (uint16_t i = 0; i < length; i++) {
+    while (!i2c_flag_get(LDC_I2C, I2C_FLAG_RBNE) && (timeout < I2C_TIME_OUT))
+        timeout++;
+    if (timeout >= I2C_TIME_OUT) {
+        return -1; // 超时返回错误
+    }
+    if (i == length - 1) {
+        i2c_ack_config(LDC_I2C, I2C_ACK_DISABLE); // 禁用ACK
+        i2c_stop_on_bus(LDC_I2C); // 生成停止条件
+    }
+    data[i] = i2c_data_receive(LDC_I2C);
+    timeout = 0;
+}
+i2c_ack_config(LDC_I2C, I2C_ACK_ENABLE); // 重新启用ACK
+
+    // 生成停止条件
+    i2c_stop_on_bus(LDC_I2C);
+    timeout = 0;
+
+    return 0;
+}
+
+void I2C_Scan(void) {
     uint32_t timeout;
     uint8_t address;
     int found_devices = 0;
@@ -49,38 +405,37 @@ void I2C_scan(void) {
         timeout = 0;
 
         // 生成起始条件
-        while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT))
+        while (i2c_flag_get(LDC_I2C, 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);
+        i2c_start_on_bus(LDC_I2C);
         timeout = 0;
 
         // 等待起始条件发送完成
-        while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT))
+        while (!i2c_flag_get(LDC_I2C, 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);
+        i2c_master_addressing(LDC_I2C, 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))
+        while (!i2c_flag_get(LDC_I2C, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
             timeout++;
         if (timeout < I2C_TIME_OUT) {
-            i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
+            i2c_flag_clear(LDC_I2C, I2C_FLAG_ADDSEND);
             printf("Found device at 0x%02X\r\n", address);
             found_devices++;
         }
 
         // 生成停止条件
-        i2c_stop_on_bus(I2C0);
-
+        i2c_stop_on_bus(LDC_I2C);
         timeout = 0;
 
-        while (i2c_flag_get(I2C0, I2C_FLAG_STPDET) && (timeout < I2C_TIME_OUT))
+        while (i2c_flag_get(LDC_I2C, I2C_FLAG_STPDET) && (timeout < I2C_TIME_OUT))
             timeout++;
     }
 
@@ -91,11 +446,81 @@ void I2C_scan(void) {
     }
 }
 
-uint32_t TMP112A_ReadTemperature(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 raw_temp = 0;
     uint16_t timeout = 0;
-    uint32_t temperature = 0;
 
     i2c_ack_config(I2C0, I2C_ACK_ENABLE);
 
@@ -106,16 +531,16 @@ uint32_t TMP112A_ReadTemperature(void) {
         timeout = 0;
     } else {
         printf("err\r\n");
-        return -1; // 超时返回错误
+        return -4101; // 超时返回错误
     }
 
     while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT)) //判断起始位是否发送，设置sensor地址并设置为写
         timeout++;
     if (timeout < I2C_TIME_OUT) {
-        i2c_master_addressing(I2C0, TMP112A_ADDR, I2C_TRANSMITTER);
+        i2c_master_addressing(I2C0, (0x2B << 1), I2C_TRANSMITTER);
         timeout = 0;
     } else {
-        return -1; // 超时返回错误
+        return -4102; // 超时返回错误
     }
 
     while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
@@ -124,17 +549,17 @@ uint32_t TMP112A_ReadTemperature(void) {
         i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
         timeout = 0;
     } else {
-        return -1; // 超时返回错误
+        return -4103; // 超时返回错误
     }
 
     while (!i2c_flag_get(I2C0, I2C_FLAG_TBE) && (timeout < I2C_TIME_OUT)) //判断地址是否发送完成，然后发送寄存器地址
         timeout++;
     if (timeout < I2C_TIME_OUT) {
-        i2c_data_transmit(I2C0, 0x00);
+        i2c_data_transmit(I2C0, 0x7f);
         timeout = 0;
-        // i2c_start_on_bus(I2C0);
+        // i2c_start_on_bus(IR_I2C);
     } else {
-        return -1; // 超时返回错误
+        return -4104; // 超时返回错误
     }
 
     while (i2c_flag_get(I2C0, I2C_FLAG_BTC) && (timeout < I2C_TIME_OUT)) //判断发送缓冲器是否为空，为空后（发送完毕）重新发送开始信号
@@ -143,17 +568,17 @@ uint32_t TMP112A_ReadTemperature(void) {
         i2c_start_on_bus(I2C0);
         timeout = 0;
     } else {
-        return -1; // 超时返回错误
+        return -4105; // 超时返回错误
     }
 
     while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT)) {
         timeout++;
     }
     if (timeout < I2C_TIME_OUT) {
-        i2c_master_addressing(I2C0, TMP112A_ADDR, I2C_RECEIVER);
+        i2c_master_addressing(I2C0, (0x2B << 1), I2C_RECEIVER);
         timeout = 0;
     } else {
-        return -1; // 超时返回错误
+        return -4106; // 超时返回错误
     }
 
     while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
@@ -162,7 +587,7 @@ uint32_t TMP112A_ReadTemperature(void) {
         i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
         timeout = 0;
     } else {
-        return -1; // 超时返回错误
+        return -4107; // 超时返回错误
     }
 
     // 读取第一个字节的数据
@@ -173,10 +598,9 @@ uint32_t TMP112A_ReadTemperature(void) {
         data[0] = i2c_data_receive(I2C0);
         timeout = 0;
     } else {
-        return -1; // 超时返回错误
+        return -4108; // 超时返回错误
     }
-
-    i2c_ack_config(I2C0, I2C_ACK_DISABLE); // 关闭发送ACK，它会在下一个字节完成后发送NAK
+    i2c_ack_config(I2C0, I2C_ACK_DISABLE);
 
     // 读取第二个字节的数据
     while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE) && (timeout < I2C_TIME_OUT)) {
@@ -186,17 +610,12 @@ uint32_t TMP112A_ReadTemperature(void) {
         data[1] = i2c_data_receive(I2C0);
         timeout = 0;
     } else {
-        return -1; // 超时返回错误
+        return -4109; // 超时返回错误
     }
 
     i2c_stop_on_bus(I2C0);
 
-    // printf("data[0]: %x, data[1]: %x\r\n", data[0], data[1]);
-    raw_temp = ((uint16_t) (data[0] << 4) | (data[1]>>4));
-    // printf("raw_temp: %x\r\n", raw_temp);
-    // printf("raw_temp(dec): %d\r\n", raw_temp);
-    temperature = raw_temp * 625;
-    // printf("temperature: %d\r\n", temperature);
+    printf("device id:%x %x\r\n",data[0],data[1]);
 
-    return temperature;
+    return 0;
 }

src/RS485.c

@@ -4,8 +4,6 @@
 
 #include "RS485.h"
 
-extern uint32_t g_temperature_uint32;
-
 void RS485_config(void) {
     rcu_periph_clock_enable(RS485_GPIO_RCU);
     rcu_periph_clock_enable(RS485_RCU);
@@ -37,8 +35,7 @@ void process_command(char *cmd) {
     if (strncmp(cmd, "M1", 2) == 0) {
         printf("M1 -=-=- OK!\r\n");
     } else if (strncmp(cmd, "M2", 2) == 0) {
-        // printf("M2 -=-=- OK!\r\n");
-        printf("Temperature: %lu\r\n", g_temperature_uint32);
+        printf("M2 -=-=- OK!\r\n");
         // } 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

src/gd32e23x_it.c

@@ -36,10 +36,6 @@ OF SUCH DAMAGE.
 #include "main.h"
 #include "systick.h"
 #include "LDC1612.h"
-#include "RS485.h"
-
-char rx_buffer[RX_BUFFER_SIZE];
-uint8_t rx_index = 0;
 
 /*!
     \brief      this function handles NMI exception
@@ -145,23 +141,3 @@ void TIMER16_IRQHandler(void) {
         led_status = !led_status;
     }
 }
-
-void USART0_IRQHandler(void) {
-    if(RESET != usart_interrupt_flag_get(USART0, USART_INT_FLAG_RBNE))
-    {
-        usart_interrupt_flag_clear(USART0, USART_INT_FLAG_RBNE);
-        uint8_t received_data = (uint8_t)usart_data_receive(USART0);
-
-        // 将接收到的数据存储到缓冲区
-        if(rx_index < RX_BUFFER_SIZE - 1) {
-            rx_buffer[rx_index++] = received_data;
-        }
-
-        // 检查是否接收到换行符，表示指令结束
-        if(received_data == '\n') {
-            rx_buffer[rx_index] = '\0'; // 添加字符串结束符
-            process_command(rx_buffer); // 处理指令
-            rx_index = 0; // 重置缓冲区索引
-        }
-    }
-}

src/main.c

@@ -12,8 +12,6 @@
 #include "RS485.h"
 #include "LDC1612.h"
 
-uint32_t g_temperature_uint32;
-
 void led_config(void)
 {
     rcu_periph_clock_enable(LED_RCU);
@@ -54,18 +52,30 @@ int main(void)
     systick_config();
     RS485_config();
     led_config();
-    I2C_config();
 
     // delay_ms(5000);
     printf("\r\n");
     printf("XLSW-3DP-LDC1612! V0.0.1\r\n");
     printf("\r\n");
 
-    // I2C_scan();
+    LDC1612_I2CConfig();
+    // LDC1612_Init();
+    // I2C_Scan();
+    LDC1612_read_sensor_infomation();
+
+
+
+
 
     while(1){
-        g_temperature_uint32 = TMP112A_ReadTemperature();
-        delay_ms(500);
+        // LDC1612_read_reg(LDC1612_ADDR, 0x7f, data, 2);
+        // printf("msb:%x %x\r\n",data[0],data[1]);
+        // LDC1612_read_reg(LDC1612_ADDR, 0x01, data, 2);
+    // printf("msb:%x %x\r\n",data[0],data[1]);
+    //     printf("hello world!\r\n");
+        // LDC1612_Init();
+        // LDC1612_read_reg(LDC1612_ADDR, 0x01, data, 2);
+    delay_ms(1000);
     }
 }