generated from hulk/gd32e23x_template
IIC scan
This commit is contained in:
parent
890287a706
commit
1d1c0fce21
@ -13,6 +13,8 @@
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#include <stdio.h>
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#include <stdlib.h>
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#define LDC1612_ADDR (0x2B << 1)
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/*Register Rddr*/
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/***************************************************************************/
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#define CONVERTION_RESULT_REG_START 0X00
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@ -33,9 +35,6 @@
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/******************************************************************************/
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#define I2C_TIME_OUT (uint16_t)(10000)
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#define LDC_I2C I2C0
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#define I2C_SPEED 400000
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typedef enum {
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I2C_START = 0,
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@ -45,10 +44,7 @@ typedef enum {
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I2C_STOP
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} i2c_process_enum;
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#define I2C_OK 1
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#define I2C_FAIL 0
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#define I2C_END 1
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#define I2C_SPEED 400000
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#define RCU_IR_GPIO RCU_GPIOF
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#define RCU_I2C RCU_I2C0
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#define I2C_SCL_PORT GPIOF
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@ -57,32 +53,13 @@ typedef enum {
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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 LDC1612_ADDR (0x2B << 1)
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// LDC1612 寄存器地址
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#define RCOUNT0_ADDR 0x08
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#define SETTLECOUNT0_ADDR 0x10
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#define CLOCK_DIVIDERS0_ADDR 0x14
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#define ERROR_CONFIG_ADDR 0x19
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#define MUX_CONFIG_ADDR 0x1B
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#define DRIVE_CURRENT0_ADDR 0x1E
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#define CONFIG_ADDR 0x1A
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#define I2C_TIME_OUT (uint16_t)(10000)
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void I2C_config(void);
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void I2C_scan(void);
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uint8_t IIC_read_16bit(uint8_t reg, uint16_t *value);
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void LDC1612_read_sensor_infomation(void);
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void LDC1612_I2CConfig(void);
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void LDC1612_Init(void);
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int LDC1612_read_reg(uint8_t device_address, uint8_t reg_address, uint8_t *data, uint16_t length);
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int i2c_write_reg(uint8_t device_address, uint8_t *data);
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uint8_t eeprom_byte_write_timeout(uint8_t device_address, uint8_t *data);
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void I2C_Scan(void);
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uint8_t IIC_read_16bit(uint8_t reg, uint16_t *value);
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int LDC_getID(void);
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#endif //LDC1612_H
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526
src/LDC1612.c
526
src/LDC1612.c
@ -5,33 +5,8 @@
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#include "LDC1612.h"
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void LDC1612_read_sensor_infomation(void)
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{
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uint16_t device_id;
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uint8_t result;
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// 读取设备ID
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result = IIC_read_16bit(READ_DEVICE_ID, &device_id);
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if (result == 0) {
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printf("Device ID: 0x%04X\n", device_id);
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} else {
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printf("Failed to read Device ID\n");
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}
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}
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/**
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* @brief This function configure the I2C peripheral & GPIO
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* @param[in] none
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* @param[out] none
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* @retval None
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*/
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void LDC1612_I2CConfig(void) {
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void I2C_config(void) {
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rcu_periph_clock_enable(RCU_IR_GPIO);
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rcu_periph_clock_enable(RCU_I2C);
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@ -44,357 +19,26 @@ void LDC1612_I2CConfig(void) {
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gpio_mode_set(I2C_SDA_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, I2C_SDA_PIN);
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gpio_output_options_set(I2C_SDA_PORT, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, I2C_SDA_PIN);
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i2c_clock_config(LDC_I2C, I2C_SPEED, I2C_DTCY_2);
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i2c_clock_config(I2C0, I2C_SPEED, I2C_DTCY_2);
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i2c_mode_addr_config(LDC_I2C, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, LDC1612_ADDR);
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i2c_enable(LDC_I2C);
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i2c_ack_config(LDC_I2C, I2C_ACK_ENABLE);
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}
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/**
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* @brief 向I2C设备寄存器写入数据
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* @param device_address: 设备地址
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* @param data: 要写入的数据
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* @retval int: 0表示成功，-1表示超时
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*/
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int i2c_write_reg(uint8_t device_address, uint8_t *data)
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{
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uint32_t timeout = 0;
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printf("debug tag- 0\r\n");
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// 确保 I2C 总线空闲
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while (i2c_flag_get(LDC_I2C, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT))
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timeout++;
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if (timeout >= I2C_TIME_OUT) {
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printf("debug tag- 1-\r\n");
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return -1; // 超时返回错误
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}
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i2c_start_on_bus(LDC_I2C);
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timeout = 0;
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printf("debug tag- 1\r\n");
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// 等待起始条件发送完成
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while (!i2c_flag_get(LDC_I2C, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT))
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timeout++;
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if (timeout >= I2C_TIME_OUT) {
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return -1; // 超时返回错误
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}
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i2c_master_addressing(LDC_I2C, device_address, I2C_TRANSMITTER);
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timeout = 0;
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printf("debug tag- 2\r\n");
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// 等待地址发送完成
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while (!i2c_flag_get(LDC_I2C, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
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timeout++;
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if (timeout >= I2C_TIME_OUT) {
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printf("debug tag- 3-\r\n");
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return -1; // 超时返回错误
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}
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i2c_flag_clear(LDC_I2C, I2C_FLAG_ADDSEND);
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timeout = 0;
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printf("debug tag- 3\r\n");
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// 发送寄存器地址和数据
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for (int i = 0; i < 3; i++) {
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while (!i2c_flag_get(LDC_I2C, I2C_FLAG_TBE) && (timeout < I2C_TIME_OUT))
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timeout++;
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if (timeout >= I2C_TIME_OUT) {
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return -1; // 超时返回错误
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}
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i2c_data_transmit(LDC_I2C, data[i]);
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printf("iic_value:%x\r\n", data[i]);
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timeout = 0;
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}
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timeout = 0;
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// 生成停止条件
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while (!i2c_flag_get(LDC_I2C, I2C_FLAG_BTC) && (timeout < I2C_TIME_OUT))
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timeout++;
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if (timeout >= I2C_TIME_OUT) {
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return -1; // 超时返回错误
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}
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i2c_stop_on_bus(LDC_I2C);
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timeout = 0;
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// 确保停止条件已发送完成
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while (i2c_flag_get(LDC_I2C, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT))
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timeout++;
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if (timeout >= I2C_TIME_OUT) {
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return -1; // 超时返回错误
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}
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printf("test info\r\n");
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return 0;
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}
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uint8_t eeprom_byte_write_timeout(uint8_t device_address, uint8_t *data)
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{
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uint8_t state = I2C_START;
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uint16_t timeout = 0;
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uint8_t i2c_timeout_flag = 0;
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/* enable acknowledge */
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i2c_ack_config(LDC_I2C, I2C_ACK_ENABLE);
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while(!(i2c_timeout_flag)) {
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switch(state) {
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case I2C_START:
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/* i2c master sends start signal only when the bus is idle */
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while(i2c_flag_get(LDC_I2C, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT)) {
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timeout++;
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}
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if(timeout < I2C_TIME_OUT) {
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i2c_start_on_bus(LDC_I2C);
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timeout = 0;
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state = I2C_SEND_ADDRESS;
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} else {
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timeout = 0;
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state = I2C_START;
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printf("i2c bus is busy in WRITE BYTE!\n");
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}
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break;
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case I2C_SEND_ADDRESS:
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/* i2c master sends START signal successfully */
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while((!i2c_flag_get(LDC_I2C, I2C_FLAG_SBSEND)) && (timeout < I2C_TIME_OUT)) {
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timeout++;
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}
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if(timeout < I2C_TIME_OUT) {
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i2c_master_addressing(LDC_I2C, device_address, I2C_TRANSMITTER);
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timeout = 0;
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state = I2C_CLEAR_ADDRESS_FLAG;
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} else {
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timeout = 0;
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state = I2C_START;
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printf("i2c master sends start signal timeout in WRITE BYTE!\n");
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}
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break;
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case I2C_CLEAR_ADDRESS_FLAG:
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/* address flag set means i2c slave sends ACK */
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while((!i2c_flag_get(LDC_I2C, I2C_FLAG_ADDSEND)) && (timeout < I2C_TIME_OUT)) {
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timeout++;
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}
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if(timeout < I2C_TIME_OUT) {
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i2c_flag_clear(LDC_I2C, I2C_FLAG_ADDSEND);
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timeout = 0;
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state = I2C_TRANSMIT_DATA;
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} else {
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timeout = 0;
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state = I2C_START;
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printf("i2c master clears address flag timeout in WRITE BYTE!\n");
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}
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break;
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case I2C_TRANSMIT_DATA:
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/* wait until the transmit data buffer is empty */
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while((!i2c_flag_get(LDC_I2C, I2C_FLAG_TBE)) && (timeout < I2C_TIME_OUT)) {
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timeout++;
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}
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if(timeout < I2C_TIME_OUT) {
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/* send the EEPROM's internal address to write to : only one byte address */
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i2c_data_transmit(LDC_I2C, data[0]);
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timeout = 0;
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} else {
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timeout = 0;
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state = I2C_START;
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printf("i2c master sends data timeout in WRITE BYTE!\n");
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}
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/* wait until BTC bit is set */
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while((!i2c_flag_get(LDC_I2C, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) {
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timeout++;
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}
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if(timeout < I2C_TIME_OUT) {
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/* send the EEPROM's internal address to write to : only one byte address */
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i2c_data_transmit(LDC_I2C, data[1]);
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timeout = 0;
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} else {
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timeout = 0;
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state = I2C_START;
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printf("i2c master sends data timeout in WRITE 1 BYTE!\n");
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}
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/* wait until BTC bit is set */
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while((!i2c_flag_get(LDC_I2C, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) {
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timeout++;
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}
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if(timeout < I2C_TIME_OUT) {
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/* send the EEPROM's internal address to write to : only one byte address */
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i2c_data_transmit(LDC_I2C, data[2]);
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timeout = 0;
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} else {
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timeout = 0;
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state = I2C_START;
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printf("i2c master sends data timeout in WRITE 2 BYTE!\n");
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}
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/* wait until BTC bit is set */
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while((!i2c_flag_get(LDC_I2C, I2C_FLAG_BTC)) && (timeout < I2C_TIME_OUT)) {
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timeout++;
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}
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if(timeout < I2C_TIME_OUT) {
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state = I2C_STOP;
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timeout = 0;
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} else {
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timeout = 0;
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state = I2C_START;
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printf("i2c master sends data timeout in WRITE BYTE!\n");
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}
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break;
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case I2C_STOP:
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/* send a stop condition to I2C bus */
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i2c_stop_on_bus(LDC_I2C);
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/* i2c master sends STOP signal successfully */
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while((I2C_CTL0(LDC_I2C) & I2C_CTL0_STOP) && (timeout < I2C_TIME_OUT)) {
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timeout++;
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}
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if(timeout < I2C_TIME_OUT) {
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timeout = 0;
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state = I2C_END;
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i2c_timeout_flag = I2C_OK;
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} else {
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timeout = 0;
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state = I2C_START;
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printf("i2c master sends stop signal timeout in WRITE BYTE!\n");
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}
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break;
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default:
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state = I2C_START;
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i2c_timeout_flag = I2C_OK;
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timeout = 0;
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printf("i2c master sends start signal in WRITE BYTE.\n");
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break;
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}
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}
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return I2C_END;
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// i2c_mode_addr_config(I2C0, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, LDC1612_ADDR);
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i2c_enable(I2C0);
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i2c_ack_config(I2C0, I2C_ACK_ENABLE);
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}
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void LDC1612_Init(void) {
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uint8_t RCOUNT0_ALL[3]={RCOUNT0_ADDR,0x05,0x36};//csdn
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uint8_t SETTLECOUNT0_ALL[3]={SETTLECOUNT0_ADDR,0x00,0x0a};
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uint8_t CLOCK_DIVIDERS0_ALL[3]={CLOCK_DIVIDERS0_ADDR,0x10,0x02};
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uint8_t ERROR_CONFIG_ALL[3]={ERROR_CONFIG_ADDR,0x00,0x00};
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uint8_t MUX_CONFIG_ALL[3]={MUX_CONFIG_ADDR,0x82,0x0c};
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uint8_t DRIVE_CURRENT0_ALL[3]={DRIVE_CURRENT0_ADDR,0x90,0x00};
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uint8_t CONFIG_ALL[3]={CONFIG_ADDR,0x14,0x01};//csdn
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uint8_t RCOUNT0_ALL[3]={SET_CONVERSION_TIME_REG_START,0x05,0x36};//csdn
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uint8_t SETTLECOUNT0_ALL[3]={SET_LC_STABILIZE_REG_START,0x00,0x0a};
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uint8_t CLOCK_DIVIDERS0_ALL[3]={SET_FREQ_REG_START,0x10,0x02};
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uint8_t ERROR_CONFIG_ALL[3]={ERROR_CONFIG_REG,0x00,0x00};
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uint8_t MUX_CONFIG_ALL[3]={MUL_CONFIG_REG,0x82,0x0c};
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uint8_t DRIVE_CURRENT0_ALL[3]={SET_DRIVER_CURRENT_REG,0x90,0x00};
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uint8_t CONFIG_ALL[3]={SENSOR_CONFIG_REG,0x14,0x01};//csdn
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// LDC1612_I2CConfig();
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// int ret = i2c_write_reg(LDC1612_ADDR, RCOUNT0_ALL);
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//
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// printf("ret:%d\r\n",ret);
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i2c_write_reg(LDC1612_ADDR, RCOUNT0_ALL);
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// eeprom_byte_write_timeout(LDC1612_ADDR, SETTLECOUNT0_ALL);
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delay_ms(100);
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i2c_write_reg(LDC1612_ADDR, SETTLECOUNT0_ALL);
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delay_ms(100);
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// i2c_write_reg(LDC1612_ADDR, CLOCK_DIVIDERS0_ALL);
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// delay_ms(100);
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// i2c_write_reg(LDC1612_ADDR, ERROR_CONFIG_ALL);
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// delay_ms(100);
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// i2c_write_reg(LDC1612_ADDR, MUX_CONFIG_ALL);
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// delay_ms(100);
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// i2c_write_reg(LDC1612_ADDR, DRIVE_CURRENT0_ALL);
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// delay_ms(100);
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// i2c_write_reg(LDC1612_ADDR, CONFIG_ALL);
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}
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/**
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* @brief 从I2C设备寄存器读取数据
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* @param device_address: 设备地址
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* @param reg_address: 寄存器地址
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* @param data: 存储读取数据的缓冲区
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* @param length: 要读取的数据长度
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* @retval int: 0表示成功，-1表示超时
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*/
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int LDC1612_read_reg(uint8_t device_address, uint8_t reg_address, uint8_t *data, uint16_t length)
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{
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uint32_t timeout = 0;
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i2c_ack_config(LDC_I2C, I2C_ACK_ENABLE);
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// 判断总线是否忙
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while (i2c_flag_get(LDC_I2C, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT))
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timeout++;
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if (timeout >= I2C_TIME_OUT) {
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return -1; // 超时返回错误
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}
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i2c_start_on_bus(LDC_I2C); //发送开始信号
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timeout = 0;
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// 等待起始条件发送完成
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while (!i2c_flag_get(LDC_I2C, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT))
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timeout++;
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if (timeout >= I2C_TIME_OUT) {
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return -1; // 超时返回错误
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}
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i2c_master_addressing(LDC_I2C, device_address, I2C_TRANSMITTER); //设置为发送模式
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timeout = 0;
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// 等待地址发送完成
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while (!i2c_flag_get(LDC_I2C, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
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timeout++;
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if (timeout >= I2C_TIME_OUT) {
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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) {
|
||||
void I2C_scan(void) {
|
||||
uint32_t timeout;
|
||||
uint8_t address;
|
||||
int found_devices = 0;
|
||||
@ -405,37 +49,38 @@ void I2C_Scan(void) {
|
||||
timeout = 0;
|
||||
|
||||
// 生成起始条件
|
||||
while (i2c_flag_get(LDC_I2C, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT))
|
||||
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(LDC_I2C);
|
||||
i2c_start_on_bus(I2C0);
|
||||
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))
|
||||
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(LDC_I2C, address << 1, I2C_TRANSMITTER);
|
||||
i2c_master_addressing(I2C0, (address << 1), I2C_TRANSMITTER);
|
||||
timeout = 0;
|
||||
|
||||
// 等待地址发送完成
|
||||
while (!i2c_flag_get(LDC_I2C, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
|
||||
while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT))
|
||||
timeout++;
|
||||
if (timeout < I2C_TIME_OUT) {
|
||||
i2c_flag_clear(LDC_I2C, I2C_FLAG_ADDSEND);
|
||||
i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
|
||||
printf("Found device at 0x%02X\r\n", address);
|
||||
found_devices++;
|
||||
}
|
||||
|
||||
// 生成停止条件
|
||||
i2c_stop_on_bus(LDC_I2C);
|
||||
i2c_stop_on_bus(I2C0);
|
||||
|
||||
timeout = 0;
|
||||
|
||||
while (i2c_flag_get(LDC_I2C, I2C_FLAG_STPDET) && (timeout < I2C_TIME_OUT))
|
||||
while (i2c_flag_get(I2C0, I2C_FLAG_STPDET) && (timeout < I2C_TIME_OUT))
|
||||
timeout++;
|
||||
}
|
||||
|
||||
@ -447,7 +92,6 @@ 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
|
||||
@ -468,7 +112,7 @@ uint8_t IIC_read_16bit(uint8_t reg, uint16_t *value) {
|
||||
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
|
||||
if ((timeout++) > I2C_TIME_OUT) return 2; // 超时
|
||||
}
|
||||
i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
|
||||
|
||||
@ -476,146 +120,66 @@ uint8_t IIC_read_16bit(uint8_t reg, uint16_t *value) {
|
||||
i2c_data_transmit(I2C0, reg);
|
||||
timeout = 0;
|
||||
while (!i2c_flag_get(I2C0, I2C_FLAG_TBE)) {
|
||||
if ((timeout++) > I2C_TIME_OUT) return 1; // 超时
|
||||
if ((timeout++) > I2C_TIME_OUT) return 3; // 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
|
||||
if ((timeout++) > I2C_TIME_OUT) return 4; // 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
|
||||
if ((timeout++) > I2C_TIME_OUT) return 5; // 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
|
||||
if ((timeout++) > I2C_TIME_OUT) return 6; // 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
|
||||
if ((timeout++) > I2C_TIME_OUT) return 7; // 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
|
||||
}
|
||||
|
||||
void LDC1612_read_sensor_infomation(void)
|
||||
{
|
||||
uint16_t device_id;
|
||||
uint16_t manufacturer_id;
|
||||
uint8_t result;
|
||||
|
||||
int LDC_getID(void) {
|
||||
uint8_t data[2] = {0};
|
||||
uint16_t timeout = 0;
|
||||
// 读取设备ID
|
||||
result = IIC_read_16bit(READ_DEVICE_ID, &device_id);
|
||||
|
||||
i2c_ack_config(I2C0, I2C_ACK_ENABLE);
|
||||
|
||||
while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY) && (timeout < I2C_TIME_OUT)) //判断IIC总线是否忙，发送起始信号
|
||||
timeout++;
|
||||
if (timeout < I2C_TIME_OUT) {
|
||||
i2c_start_on_bus(I2C0);
|
||||
timeout = 0;
|
||||
if (result == 0) {
|
||||
printf("Device ID: 0x%04X\n", device_id);
|
||||
} else {
|
||||
printf("err\r\n");
|
||||
return -4101; // 超时返回错误
|
||||
printf("Failed to read Device ID\n");
|
||||
printf("result: %d\n", result);
|
||||
}
|
||||
|
||||
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, (0x2B << 1), I2C_TRANSMITTER);
|
||||
timeout = 0;
|
||||
result = IIC_read_16bit(READ_MANUFACTURER_ID, &manufacturer_id);
|
||||
|
||||
if (result == 0) {
|
||||
printf("manufacturer ID: 0x%04X\n", manufacturer_id);
|
||||
} else {
|
||||
return -4102; // 超时返回错误
|
||||
printf("Failed to read manufacturer ID\n");
|
||||
printf("result: %d\n", result);
|
||||
}
|
||||
|
||||
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);
|
||||
timeout = 0;
|
||||
} else {
|
||||
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, 0x7f);
|
||||
timeout = 0;
|
||||
// i2c_start_on_bus(IR_I2C);
|
||||
} else {
|
||||
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
|
||||
timeout++;
|
||||
if (timeout < I2C_TIME_OUT) {
|
||||
i2c_start_on_bus(I2C0);
|
||||
timeout = 0;
|
||||
} else {
|
||||
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, (0x2B << 1), I2C_RECEIVER);
|
||||
timeout = 0;
|
||||
} else {
|
||||
return -4106; // 超时返回错误
|
||||
}
|
||||
|
||||
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);
|
||||
timeout = 0;
|
||||
} else {
|
||||
return -4107; // 超时返回错误
|
||||
}
|
||||
|
||||
// 读取第一个字节的数据
|
||||
while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE) && (timeout < I2C_TIME_OUT)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout < I2C_TIME_OUT) {
|
||||
data[0] = i2c_data_receive(I2C0);
|
||||
timeout = 0;
|
||||
} else {
|
||||
return -4108; // 超时返回错误
|
||||
}
|
||||
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)) {
|
||||
timeout++;
|
||||
}
|
||||
if (timeout < I2C_TIME_OUT) {
|
||||
data[1] = i2c_data_receive(I2C0);
|
||||
timeout = 0;
|
||||
} else {
|
||||
return -4109; // 超时返回错误
|
||||
}
|
||||
|
||||
i2c_stop_on_bus(I2C0);
|
||||
|
||||
printf("device id:%x %x\r\n",data[0],data[1]);
|
||||
|
||||
return 0;
|
||||
}
|
||||
13
src/main.c
13
src/main.c
@ -52,15 +52,14 @@ 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");
|
||||
|
||||
LDC1612_I2CConfig();
|
||||
// LDC1612_Init();
|
||||
// I2C_Scan();
|
||||
I2C_scan();
|
||||
LDC1612_read_sensor_infomation();
|
||||
|
||||
|
||||
@ -68,14 +67,6 @@ int main(void)
|
||||
|
||||
|
||||
while(1){
|
||||
// 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);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user