generated from hulk/gd32e23x_template
Porting the seeed open source library
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e2c2e81247
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5877465628
@ -12,6 +12,7 @@
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#define LDC1612_ADDR (0x2B << 1)
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@ -48,9 +49,19 @@
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/******************************************************************************/
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#define CONVERSION_TIME_CH0 0X0546 //0536
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#define CONVERSION_OFFSET_CH0 0X0000
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#define LC_STABILIZE_TIME_CH0 0X001E //30
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#define LDC1612_CONVERSION_TIME_CH0 0X0546 //0536
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#define LDC1612_DRIVE_CURRENT 0X9000 //A000
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#define LDC1612_MUX_CONFIG 0X020C // no auto scan and filter bandwidth 3.3MHz
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#define LDC1612_SENSOR_CONFIG 0X1601
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#define LDC1612_ERROR_CONFIG 0x0000
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#define LC_STABILIZE_TIME_CH0 0X001E //30
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/******************************************************************************/
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#define COIL_RP_KOM 15.727
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#define COIL_L_UH 18.147
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#define COIL_C_PF 150
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#define COIL_Q_FACTOR 35.97
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typedef enum {
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I2C_START = 0,
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@ -80,9 +91,19 @@ void I2C_config(void);
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void gpio_config(void);
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void i2c_config(void);
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void i2c_bus_reset(void);
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void I2C_scan(void);
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void i2c_scan(void);
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void ldc1612_set_conversion_time(uint8_t channel, uint16_t result);
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void ldc1612_set_conversion_offset(uint8_t channel, uint16_t result);
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void ldc1612_set_LC_stabilize_time(uint8_t channel, uint16_t result);
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void ldc1612_set_freq_divide(uint8_t channel);
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void ldc1612_set_error_config(uint16_t value);
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void ldc1612_set_mux_config(uint16_t value);
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void ldc1612_reset_sensor(void);
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void ldc1612_set_drive_current(uint8_t channel, uint16_t value);
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void ldc1612_set_sensor_config(uint16_t value);
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void ldc1612_single_ch0_config(void);
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int LDC1612_IIC_read_16bits(uint8_t reg, uint16_t *data);
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void ldc1612_iic_get_sensor_infomation(void);
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uint16_t ldc1612_get_manufacturer_id(void);
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uint16_t ldc1612_get_deveice_id(void);
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186
src/LDC1612.c
186
src/LDC1612.c
@ -104,7 +104,7 @@ void i2c_bus_reset(void) {
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* 如果在某个地址上发现了设备，则会打印出该设备的地址。
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* 最后会打印出找到的设备总数。
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*/
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void I2C_scan(void) {
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void i2c_scan(void) {
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uint32_t timeout;
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uint8_t address;
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int found_devices = 0;
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@ -190,115 +190,116 @@ void ldc1612_set_LC_stabilize_time(uint8_t channel, uint16_t result) {
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ldc1612_iic_write_16bits(SET_LC_STABILIZE_REG_START + channel, data);
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}
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int LDC1612_IIC_read_16bits(uint8_t reg, uint16_t *data) {
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uint16_t timeout = 0;
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/** @brief set input frequency divide and fref divide.
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@param channel LDC1612 has total two channels.
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@param FIN_DIV FIN input divide
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@param FREF_DIV fref,reference frequency of sensor.
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* */
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void ldc1612_set_freq_divide(uint8_t channel) {
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uint16_t value;
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uint16_t fin_div, freq_div;
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float sensor_freq;
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i2c_ack_config(I2C0, I2C_ACK_ENABLE);
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sensor_freq = 1 / (2 * 3.14 * sqrt(COIL_L_UH * COIL_C_PF * pow(10, -18))) * pow(10, -6);
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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
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timeout++;
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if (timeout < I2C_TIME_OUT) {
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i2c_start_on_bus(I2C0);
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timeout = 0;
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fin_div = (uint16_t)(sensor_freq / 8.75 + 1);
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if (fin_div * 4 < 40) {
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freq_div = 2;
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} else {
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printf("err\r\n");
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return -1; // 超时返回错误
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freq_div = 4;
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}
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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
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timeout++;
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if (timeout < I2C_TIME_OUT) {
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i2c_master_addressing(I2C0, LDC1612_ADDR, I2C_TRANSMITTER);
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timeout = 0;
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} else {
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return -2; // 超时返回错误
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}
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value = fin_div << 12;
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value |= freq_div;
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// printf("\tvalue: 0x%x\r\n", value);
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while (!i2c_flag_get(I2C0, 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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i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
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timeout = 0;
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} else {
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return -3; // 超时返回错误
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}
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uint8_t data[2] = {0};
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data[0] = (value >> 8) & 0xFF;
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data[1] = value & 0xFF;
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// printf("\tFIN_DIV: %d, FREF_DIV: %d\r\n", fin_div, freq_div);
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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
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timeout++;
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if (timeout < I2C_TIME_OUT) {
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i2c_data_transmit(I2C0, reg);
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timeout = 0;
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// i2c_start_on_bus(I2C0);
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} else {
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return -4; // 超时返回错误
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}
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ldc1612_iic_write_16bits(SET_FREQ_REG_START + channel, data);
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}
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delay_us(10);
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/** @brief Error output config.
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@param result The value to be set.
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* */
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void ldc1612_set_error_config(uint16_t value) {
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uint8_t data[2] = {0};
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data[0] = (value >> 8) & 0xFF;
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data[1] = value & 0xFF;
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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
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timeout++;
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if (timeout < I2C_TIME_OUT) {
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i2c_start_on_bus(I2C0);
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timeout = 0;
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} else {
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return -5; // 超时返回错误
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}
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ldc1612_iic_write_16bits(ERROR_CONFIG_REG, data);
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}
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while (!i2c_flag_get(I2C0, 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(I2C0, LDC1612_ADDR, I2C_RECEIVER);
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timeout = 0;
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} else {
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return -6; // 超时返回错误
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}
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/** @brief mux config.
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@param result The value to be set.
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* */
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void ldc1612_set_mux_config(uint16_t value) {
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uint8_t data[2] = {0};
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data[0] = (value >> 8) & 0xFF;
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data[1] = value & 0xFF;
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while (!i2c_flag_get(I2C0, 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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i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
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timeout = 0;
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} else {
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return -7; // 超时返回错误
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}
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ldc1612_iic_write_16bits(MUX_CONFIG_REG, data);
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}
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// 读取第一个字节的数据
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while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE) && (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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*data = i2c_data_receive(I2C0) << 8;
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timeout = 0;
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} else {
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return -8; // 超时返回错误
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}
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/** @brief reset sensor.
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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
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* */
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void ldc1612_reset_sensor(void) {
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uint8_t data[2] = {0};
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data[0] = 0x80;
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data[1] = 0x00;
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ldc1612_iic_write_16bits(SENSOR_RESET_REG, data);
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}
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// 读取第二个字节的数据
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while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE) && (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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*data |= i2c_data_receive(I2C0);
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timeout = 0;
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} else {
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return -9; // 超时返回错误
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}
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/** @brief set drive current of sensor.
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@param result The value to be set.
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* */
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void ldc1612_set_drive_current(uint8_t channel, uint16_t value) {
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uint8_t data[2] = {0};
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data[0] = (value >> 8) & 0xFF;
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data[1] = value & 0xFF;
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i2c_stop_on_bus(I2C0);
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ldc1612_iic_write_16bits(SET_DRIVER_CURRENT_REG + channel, data);
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}
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/** @brief Main config part of sensor.Contains select channel、start conversion、sleep mode、sensor activation mode、INT pin disable ..
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@param result The value to be set.
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* */
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void ldc1612_set_sensor_config(uint16_t value) {
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uint8_t data[2] = {0};
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data[0] = (value >> 8) & 0xFF;
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data[1] = value & 0xFF;
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ldc1612_iic_write_16bits(SENSOR_CONFIG_REG, data);
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}
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void ldc1612_single_ch0_config(void)
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{
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ldc1612_set_freq_divide(CHANNEL_0); //0x14 --0x1002
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ldc1612_set_LC_stabilize_time(CHANNEL_0, LC_STABILIZE_TIME_CH0); //0x10 --0x001E
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ldc1612_set_conversion_time(CHANNEL_0, LDC1612_CONVERSION_TIME_CH0); //0x08 --0x0546
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ldc1612_set_error_config(LDC1612_ERROR_CONFIG); //0x19 --0x0000)
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ldc1612_set_drive_current(CHANNEL_0, LDC1612_DRIVE_CURRENT); //0x1E --0x9000
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ldc1612_set_mux_config(LDC1612_MUX_CONFIG); //0x1B --0x020C
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ldc1612_set_sensor_config(LDC1612_SENSOR_CONFIG); //0x1A --0x1601
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// printf("device id = %x\r\n", (data[0] <<8 | data[1]));
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return 0;
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}
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void ldc1612_iic_get_sensor_infomation(void) {
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uint16_t data = 0;
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LDC1612_IIC_read_16bits(READ_MANUFACTURER_ID, &data);
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printf("\tManufacturer: 0x%x\r\n", data);
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LDC1612_IIC_read_16bits(READ_DEVICE_ID, &data);
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printf("\tDevice: 0x%x\r\n", data);
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uint8_t data[2] = {0};
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ldc1612_iic_read_16bits(READ_MANUFACTURER_ID, data);
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printf("\tManufacturer: 0x%x\r\n", (data[0] << 8) | data[1]);
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ldc1612_iic_read_16bits(READ_DEVICE_ID, data);
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printf("\tDevice: 0x%x\r\n", (data[0] << 8) | data[1]);
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}
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uint16_t ldc1612_get_manufacturer_id(void) {
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@ -308,9 +309,6 @@ uint16_t ldc1612_get_manufacturer_id(void) {
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}
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uint16_t ldc1612_get_deveice_id(void) {
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// uint16_t data = 0;
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// LDC1612_IIC_read_16bits(READ_DEVICE_ID, &data);
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// return data;
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uint8_t data[2] = {0};
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ldc1612_iic_read_16bits(READ_DEVICE_ID, data);
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return (data[0] << 8) | data[1];
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