add i2c_config

inc/mlx90614.h

@@ -5,4 +5,7 @@
 #ifndef MLX90614_H
 #define MLX90614_H
 
+void i2c_config(void);
+int read_ir_mlx90614(void);
+
 #endif //MLX90614_H

inc/systick.h

@@ -24,6 +24,6 @@ void delay_ms(uint32_t count);
 /* delay a time in microseconds */
 void delay_us(uint32_t count);
 
-void delay_nop(void);
+void delay_5_nop(void);
 
 #endif /* SYS_TICK_H */

src/main.c

@@ -32,7 +32,7 @@ int main(void)
 
     /* ---------- debug start ---------- */
 
-
+    i2c_config();
 
 
     /* ---------- debug end ---------- */
@@ -59,7 +59,8 @@ int main(void)
 }
 
 /* retarget the C library printf function to the USART */
-int _write (int fd, char *pBuffer, int size) {
+int _write(int fd, char* pBuffer, int size)
+{
     for (int i = 0; i < size; i++)
     {
         usart_data_transmit(USART0, (uint8_t)pBuffer[i]);

src/mlx90614.c

@@ -6,6 +6,128 @@
 #include "gd32e23x.h"
 #include "systick.h"
 
-int read_ir_mlx90614(void) {
+void i2c_config(void)
+{
+    rcu_periph_clock_enable(RCU_I2C0);
+    rcu_periph_clock_enable(GPIOF);
 
+    gpio_af_set(GPIOF, GPIO_AF_1, GPIO_PIN_0 | GPIO_PIN_1);
+    gpio_output_options_set(GPIOF, GPIO_OTYPE_OD, GPIO_OSPEED_50MHZ, GPIO_PIN_0 | GPIO_PIN_1);
+
+    i2c_clock_config(I2C0, 400000U, I2C_DTCY_2);
+    i2c_mode_addr_config(I2C0, I2C_I2CMODE_ENABLE, I2C_ADDFORMAT_7BITS, 0xA0);
+    i2c_enable(I2C0);
+    i2c_ack_config(I2C0, I2C_ACK_ENABLE);
+
+    nvic_irq_enable(I2C0_EV_IRQn, 2);
+    nvic_irq_enable(I2C0_ER_IRQn, 2);
+}
+
+int read_ir_mlx90614(void)
+{
+    uint8_t Data[5];
+    int inttemp_ir = 0;
+    uint32_t TIMEOUT = 0;
+    while (TIMEOUT < 10000 && i2c_flag_get(I2C0, I2C_FLAG_I2CBSY))
+        TIMEOUT++;
+    if (TIMEOUT >= 10000)
+    {
+        //printf("ERROR0\r\n");
+        return -410;
+    }
+    TIMEOUT = 0;
+    I2C_GenerateSTART(I2C0, ENABLE);
+    while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_MODE_SELECT))
+        TIMEOUT++;
+    if (TIMEOUT >= 10000)
+    {
+        //printf("ERROR1\r\n");
+        return -410;
+    }
+    //	I2C_AcknowledgeConfig(I2C0,DISABLE);
+    TIMEOUT = 0;
+    I2C_Send7bitAddress(I2C0, 0XB4, I2C_Direction_Transmitter);
+    while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED))
+        TIMEOUT++;
+    if (TIMEOUT >= 10000)
+    {
+        printf("ERROR2\r\n");
+        return -410;
+    }
+    I2C_SendData(I2C0, 0x07);
+
+    TIMEOUT = 0;
+    I2C_GenerateSTART(I2C0, ENABLE);
+    while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_MODE_SELECT))
+        TIMEOUT++;
+    if (TIMEOUT >= 10000)
+    {
+        //printf("ERROR3\r\n");
+        return -410;
+    }
+    TIMEOUT = 0;
+    I2C_Send7bitAddress(I2C0, 0XB4, I2C_Direction_Receiver);
+    while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_BYTE_RECEIVED))
+        TIMEOUT++;
+    if (TIMEOUT >= 10000)
+    {
+        //printf("ERROR4\r\n");
+        return -410;
+    }
+    //I2C_AcknowledgeConfig(I2C0,DISABLE);
+    TIMEOUT = 0;
+    Data[0] = I2C_ReceiveData(I2C0);
+    while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_BYTE_RECEIVED))
+        TIMEOUT++;
+    if (TIMEOUT >= 10000)
+    {
+        //printf("ERROR5\r\n");
+        return -410;
+    }
+
+    TIMEOUT = 0;
+    Data[1] = I2C_ReceiveData(I2C0);
+    while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_BYTE_RECEIVED))
+        TIMEOUT++;
+    if (TIMEOUT >= 10000)
+    {
+        //printf("ERROR6\r\n");
+        return -410;
+    }
+
+    TIMEOUT = 0;
+    Data[2] = I2C_ReceiveData(I2C0);
+    while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_BYTE_RECEIVED))
+        TIMEOUT++;
+    if (TIMEOUT >= 10000)
+    {
+        //printf("ERROR7\r\n");
+        return -410;
+    }
+
+
+    I2C_AcknowledgeConfig(I2C0, DISABLE);
+    Data[3] = I2C_ReceiveData(I2C0);
+    while (TIMEOUT < 10000 && !I2C_CheckEvent(I2C0, I2C_EVENT_MASTER_BYTE_RECEIVED))
+        TIMEOUT++;
+    if (TIMEOUT >= 10000)
+    {
+        //printf("ERROR11\r\n");
+        return -410;
+    }
+
+
+    I2C_GenerateSTOP(I2C0, ENABLE);
+    I2C_AcknowledgeConfig(I2C0, ENABLE);
+    //printf("data:%x,%x,%x\r\n",Data[0],Data[1],Data[2]);
+    inttemp_ir = (int)((Data[0] + Data[1] * 255) * 0.2 - 2731.5);
+    //		printf("temp:%d\r\n",inttemp_ir);
+
+
+    if (inttemp_ir < -400)
+        inttemp_ir = -400;
+    if (inttemp_ir > 850)
+        inttemp_ir = 850;
+    //
+    return inttemp_ir;
 }

src/systick.c

@@ -96,6 +96,6 @@ void delay_ms(uint32_t count) {
  *
  * ************************************************************************
  */
-void delay_nop(void) {
+void delay_5_nop(void) {
     __NOP();__NOP();__NOP();__NOP();__NOP();
 }

src/ultrasonic_driver.c

@@ -6,7 +6,8 @@
 #include "gd32e23x.h"
 #include "systick.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);
@@ -33,7 +34,8 @@ void led_config(void) {
     nvic_irq_enable(LED_IRQ, 0);
 }
 
-void usart_config(void) {
+void usart_config(void)
+{
     rcu_periph_clock_enable(USART_GPIO_RCU);
     rcu_periph_clock_enable(USART_RCU);
 
@@ -52,7 +54,8 @@ void usart_config(void) {
     usart_enable(USART0_PHY);
 }
 
-void ultrasonic_config(void) {
+void ultrasonic_config(void)
+{
     rcu_periph_clock_enable(US_TRAN_GPIO_RCU);
 
     gpio_mode_set(US_TRAN_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, US_TRAN_PIN);
@@ -89,13 +92,15 @@ void ultrasonic_config(void) {
     timer_interrupt_enable(US_TRAN_TIMER, TIMER_INT_UP);
 }
 
-void ultrasonic_transmit_config(void) {
+void ultrasonic_transmit_config(void)
+{
     led_config();
     usart_config();
     ultrasonic_config();
 }
 
-void ultrasonic_pwm_out_cycles(const uint8_t cycles) {
+void ultrasonic_pwm_out_cycles(const uint8_t cycles)
+{
     uint8_t current_cycle = 0;
 
     timer_channel_output_pulse_value_config(US_TRAN_TIMER, US_TRAN_CH, 120);
@@ -118,7 +123,8 @@ void ultrasonic_pwm_out_cycles(const uint8_t cycles) {
     // }
 }
 
-void ultrasonic_transmit_delay(const uint16_t micro_second) {
+void ultrasonic_transmit_delay(const uint16_t micro_second)
+{
     rcu_periph_clock_enable(US_TRAN_DELAY_RCU);
     timer_deinit(US_TRAN_DELAY_TIMER);
 
@@ -137,7 +143,8 @@ void ultrasonic_transmit_delay(const uint16_t micro_second) {
     nvic_irq_enable(TIMER15_IRQn, 1U);
 }
 
-void receive_exti_config(void) {
+void receive_exti_config(void)
+{
     rcu_periph_clock_enable(US_FB_GPIO_RCU);
     rcu_periph_clock_enable(US_FB_EXTI_RCU);
 
@@ -151,7 +158,8 @@ void receive_exti_config(void) {
     // exti_interrupt_enable(EXTI_0);
 }
 
-void ultrasonic_echo_timer_config(void) {
+void ultrasonic_echo_timer_config(void)
+{
     rcu_periph_clock_enable(US_ECHO_RCU);
     timer_deinit(US_ECHO_TIMER);
 
@@ -174,13 +182,15 @@ void ultrasonic_echo_timer_config(void) {
     timer_input_capture_config(US_ECHO_TIMER, US_ECHO_CH, &timer_icinitpara);
 }
 
-void ultrasonic_receive_config(void) {
+void ultrasonic_receive_config(void)
+{
     ultrasonic_transmit_delay(TIME_CORRECTION_US);
     receive_exti_config();
     ultrasonic_echo_timer_config();
 }
 
-uint16_t calculate_distance(uint32_t us_value) {
+uint16_t calculate_distance(uint32_t us_value)
+{
     uint16_t distace = (TIME_CORRECTION_US + us_value) * 17;
     /*
      *  (TIME_CORRECTION_US + us_value) * 340 m/s