hulk/xlsw_3dp_LDC1612
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LDC1612单次读取16bit正常，可以获取厂商ID或者设备ID，但是无法连续获取

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This commit is contained in:
yelvlab 2024-12-16 11:41:26 +08:00
parent d6f3ea33b1
commit bfd2296e05
3 changed files with 28 additions and 62 deletions
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2
inc/LDC1612.h
View File

@ -58,7 +58,7 @@ typedef enum {
void I2C_config(void);
void I2C_scan(void);
int LDC1612_IIC_read_16bits(void);
int LDC1612_IIC_read_16bits(uint8_t reg, uint16_t *data);

16
src/LDC1612.c
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@ -97,9 +97,7 @@ void I2C_scan(void) {
}
}
int LDC1612_IIC_read_16bits(void) {
uint8_t data[2] = {0};
uint16_t raw_temp = 0;
int LDC1612_IIC_read_16bits(uint8_t reg, uint16_t *data) {
uint16_t timeout = 0;
i2c_ack_config(I2C0, I2C_ACK_ENABLE);
@ -135,13 +133,15 @@ int LDC1612_IIC_read_16bits(void) {
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, READ_DEVICE_ID);
i2c_data_transmit(I2C0, reg);
timeout = 0;
// i2c_start_on_bus(I2C0);
} else {
return -4; // 超时返回错误
}
delay_us(10);
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) {
@ -175,20 +175,20 @@ int LDC1612_IIC_read_16bits(void) {
timeout++;
}
if (timeout < I2C_TIME_OUT) {
data[0] = i2c_data_receive(I2C0);
*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
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
// 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);
*data |= i2c_data_receive(I2C0);
timeout = 0;
} else {
return -9; // 超时返回错误
@ -196,6 +196,6 @@ int LDC1612_IIC_read_16bits(void) {
i2c_stop_on_bus(I2C0);
printf("device id = %x\r\n", (data[0] <<8 | data[1]));
// printf("device id = %x\r\n", (data[0] <<8 | data[1]));
return 0;
}

72
src/main.c
View File

@ -12,8 +12,7 @@
#include "RS485.h"
#include "LDC1612.h"
void led_config(void)
{
void led_config(void) {
rcu_periph_clock_enable(LED_RCU);
gpio_mode_set(LED_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, LED_PIN);
@ -40,8 +39,7 @@ void led_config(void)
nvic_irq_enable(LED_IRQ, 2);
}
void iicSendData(void)
{
void iicSendData(void) {
while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY));
i2c_start_on_bus(I2C0);
printf("1\r\n");
@ -57,8 +55,7 @@ void iicSendData(void)
i2c_start_on_bus(I2C0);
}
void iicReceiveData(void)
{
void iicReceiveData(void) {
uint16_t data[3] = {0};
i2c_start_on_bus(I2C0);
// i2c_stop_on_bus(I2C0);
@ -91,8 +88,7 @@ void iicReceiveData(void)
\param[out] none
\retval none
*/
int main(void)
{
int main(void) {
/* configure systick */
systick_config();
RS485_config();
@ -104,63 +100,33 @@ int main(void)
printf("XLSW-3DP-LDC1612! V0.0.1\r\n");
printf("\r\n");
// uint16_t data[3] = {0};
delay_ms(500);
// I2C_scan();
delay_ms(1000);
// while (i2c_flag_get(I2C0, I2C_FLAG_I2CBSY));
// i2c_start_on_bus(I2C0);
// printf("1\r\n");
// while (!i2c_flag_get(I2C0, I2C_FLAG_SBSEND));
// i2c_master_addressing(I2C0, LDC1612_ADDR, I2C_TRANSMITTER);
// printf("2\r\n");
// while (!i2c_flag_get(I2C0, I2C_FLAG_ADDSEND));
// i2c_flag_clear(I2C0, I2C_FLAG_ADDSEND);
// printf("3\r\n");
// while (!i2c_flag_get(I2C0, I2C_FLAG_TBE));
// i2c_data_transmit(I2C0, 0x7E);
// printf("4\r\n");
// i2c_start_on_bus(I2C0);
// // i2c_stop_on_bus(I2C0);
// int result = 0;
uint16_t data = 0;
uint16_t device_id = 0;
LDC1612_IIC_read_16bits(READ_DEVICE_ID, &data);
// printf("result = %d\r\n", result);
// delay_ms(100);
// i2c_start_on_bus(I2C0);
// delay_ms(100);
// i2c_stop_on_bus(I2C0);
// delay_ms(1000);
// i2c_stop_on_bus(I2C0);
// i2c_ack_config(I2C0, I2C_ACK_ENABLE);
// iicSendData();
// iicReceiveData();
int result = 0;
result = LDC1612_IIC_read_16bits();
printf("result = %d\r\n", result);
while(1){
LDC1612_IIC_read_16bits(READ_DEVICE_ID, &device_id);
printf("Manufacturer: 0x%x\r\n", data);
printf("Device: 0x%x\r\n", device_id);
while (1) {
delay_ms(1000);
printf("OK!!!\r\n");
// iicSendData();
// i2c_flag_clear(I2C0, I2C_FLAG_I2CBSY);
}
}
/* retarget the C library printf function to the USART */
int _write (int fd, char *pBuffer, int size)
{
for (int i = 0; i < size; i++)
{
usart_data_transmit(USART0, (uint8_t)pBuffer[i]);
while(RESET == usart_flag_get(USART0, USART_FLAG_TBE));
int _write(int fd, char *pBuffer, int size) {
for (int i = 0; i < size; i++) {
usart_data_transmit(USART0, (uint8_t) pBuffer[i]);
while (RESET == usart_flag_get(USART0, USART_FLAG_TBE));
}
return size;
}