generated from hulk/gd32e23x_template_cmake_vscode
368 lines
11 KiB
C
368 lines
11 KiB
C
//
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// Created by dell on 24-12-3.
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// LDC1612 Inductive Sensor Driver Implementation
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//
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#include "ldc1612.h"
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/* Private function prototypes */
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static i2c_status_t ldc1612_write_register(uint8_t reg_addr, uint16_t value);
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static i2c_status_t ldc1612_read_register(uint8_t reg_addr, uint16_t *value);
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static uint16_t ldc1612_calculate_clock_dividers(uint8_t channel);
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static uint32_t ldc1612_parse_raw_result(uint32_t raw_result);
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/*!
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\brief 初始化LDC1612传感器
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\param[in] none
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\param[out] none
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\retval ldc1612_status_t
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*/
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ldc1612_status_t ldc1612_init(void) {
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i2c_status_t i2c_status;
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uint16_t device_id, manufacturer_id;
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/* 复位传感器 */
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i2c_status = ldc1612_reset();
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if (i2c_status != I2C_STATUS_SUCCESS) {
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return LDC1612_STATUS_ERROR;
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}
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/* 等待复位完成 */
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delay_ms(10);
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/* 验证设备ID */
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device_id = ldc1612_get_device_id();
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manufacturer_id = ldc1612_get_manufacturer_id();
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if (device_id != 0x3055 || manufacturer_id != 0x5449) {
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return LDC1612_STATUS_ERROR;
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}
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return LDC1612_STATUS_SUCCESS;
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}
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/*!
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\brief 复位LDC1612传感器
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\param[in] none
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\param[out] none
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\retval ldc1612_status_t
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*/
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ldc1612_status_t ldc1612_reset(void) {
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i2c_status_t status = ldc1612_write_register(LDC1612_RESET_DEV, LDC1612_RESET_VALUE);
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return (status == I2C_STATUS_SUCCESS) ? LDC1612_STATUS_SUCCESS : LDC1612_STATUS_ERROR;
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}
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/*!
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\brief 配置单通道模式
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\param[in] channel: 通道号 (0或1)
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\param[out] none
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\retval ldc1612_status_t
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*/
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ldc1612_status_t ldc1612_config_single_channel(uint8_t channel) {
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i2c_status_t status;
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uint16_t clock_dividers;
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if (channel > 1) {
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return LDC1612_STATUS_INVALID_PARAM;
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}
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/* 进入休眠模式进行配置 */
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status = ldc1612_write_register(LDC1612_CONFIG, LDC1612_SENSOR_CONFIG_SLEEP);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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/* 计算并设置时钟分频 */
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clock_dividers = ldc1612_calculate_clock_dividers(channel);
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status = ldc1612_write_register(LDC1612_CLOCK_DIVIDERS_CH0 + channel, clock_dividers);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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/* 设置稳定时间 */
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status = ldc1612_write_register(LDC1612_SETTLECOUNT_CH0 + channel, LDC1612_SETTLECOUNT_CH0_DEFAULT);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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/* 设置转换时间 */
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status = ldc1612_write_register(LDC1612_RCOUNT_CH0 + channel, LDC1612_CONVERSION_TIME_CH0);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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/* 设置错误配置 */
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status = ldc1612_write_register(LDC1612_ERROR_CONFIG, LDC1612_ERROR_CONFIG_DEFAULT);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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/* 设置驱动电流 */
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status = ldc1612_write_register(LDC1612_DRIVE_CURRENT_CH0 + channel, LDC1612_DRIVE_CURRENT_DEFAULT);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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/* 设置MUX配置 */
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status = ldc1612_write_register(LDC1612_MUX_CONFIG, LDC1612_MUX_CONFIG_DEFAULT);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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/* 退出休眠模式，开始转换 */
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status = ldc1612_write_register(LDC1612_CONFIG, LDC1612_SENSOR_CONFIG_ACTIVE);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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return LDC1612_STATUS_SUCCESS;
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}
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/*!
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\brief 读取制造商ID
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\param[in] none
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\param[out] none
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\retval uint16_t 制造商ID
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*/
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uint16_t ldc1612_get_manufacturer_id(void) {
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uint16_t id = 0;
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ldc1612_read_register(LDC1612_MANUFACTURER_ID, &id);
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return id;
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}
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/*!
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\brief 读取设备ID
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\param[in] none
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\param[out] none
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\retval uint16_t 设备ID
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*/
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uint16_t ldc1612_get_device_id(void) {
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uint16_t id = 0;
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ldc1612_read_register(LDC1612_DEVICE_ID, &id);
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return id;
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}
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/*!
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\brief 读取通道原始数据
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\param[in] channel: 通道号
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\param[out] result: 结果结构体指针
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\retval ldc1612_status_t
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*/
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ldc1612_status_t ldc1612_read_channel(uint8_t channel, ldc1612_result_t *result) {
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uint16_t msb, lsb;
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uint32_t raw_data;
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i2c_status_t status;
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if (channel > 1 || result == NULL) {
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return LDC1612_STATUS_INVALID_PARAM;
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}
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/* 读取MSB */
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status = ldc1612_read_register(LDC1612_DATA_CH0_MSB + (channel * 2), &msb);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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/* 读取LSB */
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status = ldc1612_read_register(LDC1612_DATA_CH0_LSB + (channel * 2), &lsb);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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/* 组合32位数据 */
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raw_data = ((uint32_t)msb << 16) | lsb;
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/* 解析结果 */
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result->raw_data = raw_data;
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result->frequency = ldc1612_parse_raw_result(raw_data);
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/* 检查错误 */
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if (result->frequency >= 0x10000000) {
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result->error_flag = true;
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result->error_code = (result->frequency >> 24) & 0xFF;
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return LDC1612_STATUS_ERROR;
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} else {
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result->error_flag = false;
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result->error_code = 0;
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}
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return LDC1612_STATUS_SUCCESS;
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}
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/*!
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\brief 设置驱动电流
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\param[in] channel: 通道号
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\param[in] current: 电流值
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\param[out] none
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\retval ldc1612_status_t
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*/
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ldc1612_status_t ldc1612_set_drive_current(uint8_t channel, uint16_t current) {
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if (channel > 1) {
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return LDC1612_STATUS_INVALID_PARAM;
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}
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i2c_status_t status = ldc1612_write_register(LDC1612_DRIVE_CURRENT_CH0 + channel, current);
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return (status == I2C_STATUS_SUCCESS) ? LDC1612_STATUS_SUCCESS : LDC1612_STATUS_ERROR;
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}
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/*!
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\brief 自动检测驱动电流
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\param[in] channel: 通道号
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\param[out] none
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\retval ldc1612_status_t
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*/
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ldc1612_status_t ldc1612_auto_detect_drive_current(uint8_t channel) {
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uint16_t config_value, drive_current_reg;
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uint16_t init_value, drive_current;
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i2c_status_t status;
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if (channel > 1) {
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return LDC1612_STATUS_INVALID_PARAM;
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}
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/* 进入休眠模式 */
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status = ldc1612_write_register(LDC1612_CONFIG, LDC1612_SENSOR_CONFIG_SLEEP);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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/* 设置时钟分频 */
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uint16_t clock_dividers = ldc1612_calculate_clock_dividers(channel);
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status = ldc1612_write_register(LDC1612_CLOCK_DIVIDERS_CH0 + channel, clock_dividers);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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/* 读取当前配置并禁用Rp覆盖 */
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status = ldc1612_read_register(LDC1612_CONFIG, &config_value);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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config_value &= ~(1 << 12); // 禁用RP_OVERRIDE_EN
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status = ldc1612_write_register(LDC1612_CONFIG, config_value);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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/* 启动测量 */
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status = ldc1612_write_register(LDC1612_CONFIG, LDC1612_SENSOR_CONFIG_ACTIVE);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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/* 等待至少一次转换完成 */
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delay_ms(10);
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/* 读取初始驱动电流值 */
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status = ldc1612_read_register(LDC1612_DRIVE_CURRENT_CH0 + channel, &drive_current_reg);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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init_value = (drive_current_reg >> 6) & 0x1F;
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drive_current = (init_value << 11) | 0x0000;
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/* 写入检测到的驱动电流 */
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status = ldc1612_write_register(LDC1612_DRIVE_CURRENT_CH0 + channel, drive_current);
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if (status != I2C_STATUS_SUCCESS) return LDC1612_STATUS_ERROR;
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return LDC1612_STATUS_SUCCESS;
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}
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/*!
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\brief 获取状态字符串
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\param[in] status: 状态码
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\param[out] none
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\retval const char* 状态字符串
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*/
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const char* ldc1612_get_status_string(ldc1612_status_t status) {
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switch (status) {
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case LDC1612_STATUS_SUCCESS:
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return "SUCCESS";
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case LDC1612_STATUS_ERROR:
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return "ERROR";
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case LDC1612_STATUS_TIMEOUT:
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return "TIMEOUT";
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case LDC1612_STATUS_INVALID_PARAM:
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return "INVALID_PARAM";
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case LDC1612_STATUS_NO_COIL:
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return "NO_COIL";
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case LDC1612_STATUS_UNDER_RANGE:
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return "UNDER_RANGE";
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case LDC1612_STATUS_OVER_RANGE:
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return "OVER_RANGE";
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default:
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return "UNKNOWN";
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}
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}
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/* Private Functions Implementation */
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/*!
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\brief 写入寄存器
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\param[in] reg_addr: 寄存器地址
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\param[in] value: 写入值
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\param[out] none
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\retval i2c_status_t
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*/
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static i2c_status_t ldc1612_write_register(uint8_t reg_addr, uint16_t value) {
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uint8_t data[2];
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data[0] = (value >> 8) & 0xFF;
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data[1] = value & 0xFF;
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return i2c_write_16bits(LDC1612_ADDR, reg_addr, data);
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}
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/*!
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\brief 读取寄存器
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\param[in] reg_addr: 寄存器地址
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\param[out] value: 读取值指针
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\retval i2c_status_t
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*/
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static i2c_status_t ldc1612_read_register(uint8_t reg_addr, uint16_t *value) {
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uint8_t data[2];
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i2c_status_t status;
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if (value == NULL) {
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return I2C_STATUS_INVALID_PARAM;
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}
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status = i2c_read_16bits(LDC1612_ADDR, reg_addr, data);
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if (status == I2C_STATUS_SUCCESS) {
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*value = ((uint16_t)data[0] << 8) | data[1];
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}
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return status;
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}
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/*!
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\brief 计算时钟分频值
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\param[in] channel: 通道号
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\param[out] none
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\retval uint16_t 分频值
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*/
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static uint16_t ldc1612_calculate_clock_dividers(uint8_t channel) {
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uint16_t fin_div, fref_div;
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float sensor_freq;
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/* 计算传感器频率 (MHz) */
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sensor_freq = 1.0f / (2.0f * 3.14159f * sqrtf(LDC1612_COIL_L_UH * LDC1612_COIL_C_PF * 1e-18f)) * 1e-6f;
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/* 计算FIN分频 */
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fin_div = (uint16_t)(sensor_freq / 8.75f + 1);
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/* 计算FREF分频 */
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if (fin_div * 4 < 40) {
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fref_div = 2;
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} else {
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fref_div = 4;
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}
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return (fin_div << 12) | fref_div;
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}
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/*!
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\brief 解析原始结果
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\param[in] raw_result: 原始数据
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\param[out] none
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\retval uint32_t 解析后的数据
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*/
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static uint32_t ldc1612_parse_raw_result(uint32_t raw_result) {
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uint32_t calibration_value;
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uint8_t error_code;
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calibration_value = raw_result & 0x0FFFFFFF;
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/* 检查无线圈错误 */
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if (calibration_value == 0x0FFFFFFF) {
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return LDC1612_ERROR_NO_COIL;
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}
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error_code = (raw_result >> 24) & 0xFF;
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/* 检查各种错误 */
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if (error_code & 0x80) {
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return LDC1612_ERROR_UNDER_RANGE;
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}
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if (error_code & 0x40) {
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return LDC1612_ERROR_OVER_RANGE;
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}
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if (error_code & 0x20) {
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return LDC1612_ERROR_WATCHDOG;
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}
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if (error_code & 0x10) {
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return LDC1612_ERROR_AMPLITUDE;
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}
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return calibration_value;
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}
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