hulk/xlsw_3dp_LDC1612
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Porting the seeed open source library

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yelvlab 2024-12-20 00:36:28 +08:00
parent e2c2e81247
commit 5877465628
2 changed files with 118 additions and 99 deletions
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31
inc/LDC1612.h
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@ -12,6 +12,7 @@
#include <string.h> #include <string.h>
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <math.h>
#define LDC1612_ADDR (0x2B << 1) #define LDC1612_ADDR (0x2B << 1)
@ -48,9 +49,19 @@
/******************************************************************************/ /******************************************************************************/
#define CONVERSION_TIME_CH0 0X0546 //0536 #define LDC1612_CONVERSION_TIME_CH0 0X0546 //0536
#define CONVERSION_OFFSET_CH0 0X0000 #define LDC1612_DRIVE_CURRENT 0X9000 //A000
#define LC_STABILIZE_TIME_CH0 0X001E //30 #define LDC1612_MUX_CONFIG 0X020C // no auto scan and filter bandwidth 3.3MHz
#define LDC1612_SENSOR_CONFIG 0X1601
#define LDC1612_ERROR_CONFIG 0x0000
#define LC_STABILIZE_TIME_CH0 0X001E //30
/******************************************************************************/
#define COIL_RP_KOM 15.727
#define COIL_L_UH 18.147
#define COIL_C_PF 150
#define COIL_Q_FACTOR 35.97
typedef enum { typedef enum {
I2C_START = 0, I2C_START = 0,
@ -80,9 +91,19 @@ void I2C_config(void);
void gpio_config(void); void gpio_config(void);
void i2c_config(void); void i2c_config(void);
void i2c_bus_reset(void); void i2c_bus_reset(void);
void I2C_scan(void); void i2c_scan(void);
void ldc1612_set_conversion_time(uint8_t channel, uint16_t result);
void ldc1612_set_conversion_offset(uint8_t channel, uint16_t result);
void ldc1612_set_LC_stabilize_time(uint8_t channel, uint16_t result);
void ldc1612_set_freq_divide(uint8_t channel);
void ldc1612_set_error_config(uint16_t value);
void ldc1612_set_mux_config(uint16_t value);
void ldc1612_reset_sensor(void);
void ldc1612_set_drive_current(uint8_t channel, uint16_t value);
void ldc1612_set_sensor_config(uint16_t value);
void ldc1612_single_ch0_config(void);
int LDC1612_IIC_read_16bits(uint8_t reg, uint16_t *data);
void ldc1612_iic_get_sensor_infomation(void); void ldc1612_iic_get_sensor_infomation(void);
uint16_t ldc1612_get_manufacturer_id(void); uint16_t ldc1612_get_manufacturer_id(void);
uint16_t ldc1612_get_deveice_id(void); uint16_t ldc1612_get_deveice_id(void);

186
src/LDC1612.c
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@ -104,7 +104,7 @@ void i2c_bus_reset(void) {
* 如果在某个地址上发现了设备，则会打印出该设备的地址。 * 如果在某个地址上发现了设备，则会打印出该设备的地址。
* 最后会打印出找到的设备总数。 * 最后会打印出找到的设备总数。
*/ */
void I2C_scan(void) { void i2c_scan(void) {
uint32_t timeout; uint32_t timeout;
uint8_t address; uint8_t address;
int found_devices = 0; int found_devices = 0;
@ -190,115 +190,116 @@ void ldc1612_set_LC_stabilize_time(uint8_t channel, uint16_t result) {
ldc1612_iic_write_16bits(SET_LC_STABILIZE_REG_START + channel, data); ldc1612_iic_write_16bits(SET_LC_STABILIZE_REG_START + channel, data);
} }
int LDC1612_IIC_read_16bits(uint8_t reg, uint16_t *data) { /** @brief set input frequency divide and fref divide.
uint16_t timeout = 0; @param channel LDC1612 has total two channels.
@param FIN_DIV FIN input divide
@param FREF_DIV fref,reference frequency of sensor.
* */
void ldc1612_set_freq_divide(uint8_t channel) {
uint16_t value;
uint16_t fin_div, freq_div;
float sensor_freq;
i2c_ack_config(I2C0, I2C_ACK_ENABLE); sensor_freq = 1 / (2 * 3.14 * sqrt(COIL_L_UH * COIL_C_PF * pow(10, -18))) * pow(10, -6);
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 fin_div = (uint16_t)(sensor_freq / 8.75 + 1);
timeout++;
if (timeout < I2C_TIME_OUT) { if (fin_div * 4 < 40) {
i2c_start_on_bus(I2C0); freq_div = 2;
timeout = 0;
} else { } else {
printf("err\r\n"); freq_div = 4;
return -1; // 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 value = fin_div << 12;
timeout++; value |= freq_div;
if (timeout < I2C_TIME_OUT) { // printf("\tvalue: 0x%x\r\n", value);
i2c_master_addressing(I2C0, LDC1612_ADDR, I2C_TRANSMITTER);
timeout = 0;
} else {
return -2; // 超时返回错误
}
while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT)) uint8_t data[2] = {0};
timeout++; data[0] = (value >> 8) & 0xFF;
if (timeout < I2C_TIME_OUT) { data[1] = value & 0xFF;
i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND); // printf("\tFIN_DIV: %d, FREF_DIV: %d\r\n", fin_div, freq_div);
timeout = 0;
} else {
return -3; // 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 ldc1612_iic_write_16bits(SET_FREQ_REG_START + channel, data);
timeout++; }
if (timeout < I2C_TIME_OUT) {
i2c_data_transmit(I2C0, reg);
timeout = 0;
// i2c_start_on_bus(I2C0);
} else {
return -4; // 超时返回错误
}
delay_us(10); /** @brief Error output config.
@param result The value to be set.
* */
void ldc1612_set_error_config(uint16_t value) {
uint8_t data[2] = {0};
data[0] = (value >> 8) & 0xFF;
data[1] = value & 0xFF;
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 ldc1612_iic_write_16bits(ERROR_CONFIG_REG, data);
timeout++; }
if (timeout < I2C_TIME_OUT) {
i2c_start_on_bus(I2C0);
timeout = 0;
} else {
return -5; // 超时返回错误
}
while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND) && (timeout < I2C_TIME_OUT)) { /** @brief mux config.
timeout++; @param result The value to be set.
} * */
if (timeout < I2C_TIME_OUT) { void ldc1612_set_mux_config(uint16_t value) {
i2c_master_addressing(I2C0, LDC1612_ADDR, I2C_RECEIVER); uint8_t data[2] = {0};
timeout = 0; data[0] = (value >> 8) & 0xFF;
} else { data[1] = value & 0xFF;
return -6; // 超时返回错误
}
while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND) && (timeout < I2C_TIME_OUT)) ldc1612_iic_write_16bits(MUX_CONFIG_REG, data);
timeout++; }
if (timeout < I2C_TIME_OUT) {
i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
timeout = 0;
} else {
return -7; // 超时返回错误
}
// 读取第一个字节的数据 /** @brief reset sensor.
while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE) && (timeout < I2C_TIME_OUT)) {
timeout++;
}
if (timeout < I2C_TIME_OUT) {
*data = i2c_data_receive(I2C0) << 8;
timeout = 0;
} else {
return -8; // 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 * */
void ldc1612_reset_sensor(void) {
uint8_t data[2] = {0};
data[0] = 0x80;
data[1] = 0x00;
ldc1612_iic_write_16bits(SENSOR_RESET_REG, data);
}
// 读取第二个字节的数据 /** @brief set drive current of sensor.
while (!i2c_flag_get(I2C0, I2C_FLAG_RBNE) && (timeout < I2C_TIME_OUT)) { @param result The value to be set.
timeout++; * */
} void ldc1612_set_drive_current(uint8_t channel, uint16_t value) {
if (timeout < I2C_TIME_OUT) { uint8_t data[2] = {0};
*data |= i2c_data_receive(I2C0); data[0] = (value >> 8) & 0xFF;
timeout = 0; data[1] = value & 0xFF;
} else {
return -9; // 超时返回错误
}
i2c_stop_on_bus(I2C0); ldc1612_iic_write_16bits(SET_DRIVER_CURRENT_REG + channel, data);
}
/** @brief Main config part of sensor.Contains select channel、start conversion、sleep mode、sensor activation mode、INT pin disable ..
@param result The value to be set.
* */
void ldc1612_set_sensor_config(uint16_t value) {
uint8_t data[2] = {0};
data[0] = (value >> 8) & 0xFF;
data[1] = value & 0xFF;
ldc1612_iic_write_16bits(SENSOR_CONFIG_REG, data);
}
void ldc1612_single_ch0_config(void)
{
ldc1612_set_freq_divide(CHANNEL_0); //0x14 --0x1002
ldc1612_set_LC_stabilize_time(CHANNEL_0, LC_STABILIZE_TIME_CH0); //0x10 --0x001E
ldc1612_set_conversion_time(CHANNEL_0, LDC1612_CONVERSION_TIME_CH0); //0x08 --0x0546
ldc1612_set_error_config(LDC1612_ERROR_CONFIG); //0x19 --0x0000)
ldc1612_set_drive_current(CHANNEL_0, LDC1612_DRIVE_CURRENT); //0x1E --0x9000
ldc1612_set_mux_config(LDC1612_MUX_CONFIG); //0x1B --0x020C
ldc1612_set_sensor_config(LDC1612_SENSOR_CONFIG); //0x1A --0x1601
// printf("device id = %x\r\n", (data[0] <<8 | data[1]));
return 0;
} }
void ldc1612_iic_get_sensor_infomation(void) { void ldc1612_iic_get_sensor_infomation(void) {
uint16_t data = 0; uint8_t data[2] = {0};
LDC1612_IIC_read_16bits(READ_MANUFACTURER_ID, &data); ldc1612_iic_read_16bits(READ_MANUFACTURER_ID, data);
printf("\tManufacturer: 0x%x\r\n", data); printf("\tManufacturer: 0x%x\r\n", (data[0] << 8) | data[1]);
LDC1612_IIC_read_16bits(READ_DEVICE_ID, &data); ldc1612_iic_read_16bits(READ_DEVICE_ID, data);
printf("\tDevice: 0x%x\r\n", data); printf("\tDevice: 0x%x\r\n", (data[0] << 8) | data[1]);
} }
uint16_t ldc1612_get_manufacturer_id(void) { uint16_t ldc1612_get_manufacturer_id(void) {
@ -308,9 +309,6 @@ uint16_t ldc1612_get_manufacturer_id(void) {
} }
uint16_t ldc1612_get_deveice_id(void) { uint16_t ldc1612_get_deveice_id(void) {
// uint16_t data = 0;
// LDC1612_IIC_read_16bits(READ_DEVICE_ID, &data);
// return data;
uint8_t data[2] = {0}; uint8_t data[2] = {0};
ldc1612_iic_read_16bits(READ_DEVICE_ID, data); ldc1612_iic_read_16bits(READ_DEVICE_ID, data);
return (data[0] << 8) | data[1]; return (data[0] << 8) | data[1];