change LED blink timer to TIMER16.

change ultrasonic transmit pin timer to TIMER13 CH0 PB1(AF_0).
rename function name.

inc/ultrasonic_driver.h

@@ -10,8 +10,8 @@
 #define LED_PORT            GPIOA
 #define LED_PIN             GPIO_PIN_9
 #define LED_RCU             RCU_GPIOA
-#define LED_TIMER           TIMER13
+#define LED_TIMER           TIMER16
-#define LED_IRQ             TIMER13_IRQn
+#define LED_IRQ             TIMER16_IRQn
 
 #define USART_RCU           RCU_USART0
 #define USART_GPIO_RCU      RCU_GPIOA
@@ -24,19 +24,21 @@
 #define US_TRAN_GPIO_RCU    RCU_GPIOB
 #define US_TRAN_GPIO_PORT   GPIOB
 #define US_TRAN_PIN         GPIO_PIN_1
+#define US_TRAN_AF          GPIO_AF_0
 
-#define US_TRAN_RCU         RCU_TIMER2
+#define US_TRAN_RCU         RCU_TIMER13
-#define US_TRAN_TIMER       TIMER2
+#define US_TRAN_TIMER       TIMER13
-#define US_TRAN_CH          TIMER_CH_3
+#define US_TRAN_CH          TIMER_CH_0
 
 void led_config(void);
 void usart_config(void);
 void ultrasonic_config(void);
-void ultrasonic_peripheral_config(void);
+void ultrasonic_transmit_config(void);
 void ultrasonic_pwm_out_cycles(uint8_t cycles);
 
 
-void timer15_config(void);
+void ultrasonic_transmit_delay(void);
 void recevice_exti_config(void);
+void ultrasonic_echo_timer_config(void);
 
 #endif //ULTRASONIC_DRIVER_H

src/gd32e23x_it.c

@@ -98,46 +98,67 @@ void SysTick_Handler(void)
 {
 }
 
-void TIMER13_IRQHandler(void) {
+void TIMER16_IRQHandler(void) {
-    if (timer_interrupt_flag_get(TIMER13, TIMER_INT_FLAG_UP) == SET)
+    if (timer_interrupt_flag_get(TIMER16, TIMER_INT_FLAG_UP) == SET)
     {
-        timer_interrupt_flag_clear(TIMER13, TIMER_INT_FLAG_UP);
+        timer_interrupt_flag_clear(TIMER16, TIMER_INT_FLAG_UP);
         static uint8_t led_status = 0;
         if (led_status)
         {
             //! turn on led & reconfig timer13 period to 19000(1900ms)
             gpio_bit_write(GPIOA, GPIO_PIN_9, RESET);
-            timer_autoreload_value_config(TIMER13, 19200);
+            timer_autoreload_value_config(TIMER16, 19200);
         } else {
             //! turn off led & reconfig timer13 period to 1000(100ms)
             gpio_bit_write(GPIOA, GPIO_PIN_9, SET);
-            timer_autoreload_value_config(TIMER13, 800);
+            timer_autoreload_value_config(TIMER16, 800);
         }
         led_status = !led_status;
     }
 }
 
+void TIMER14_IRQHandler(void)
+{
+    if (timer_flag_get(TIMER14, TIMER_FLAG_CH0))
+    {
+        timer_flag_clear(TIMER14, TIMER_FLAG_CH0);
+
+        uint32_t capture_value = timer_channel_capture_value_register_read(TIMER14, TIMER_CH_0);
+
+        timer_disable(TIMER14);
+    }
+}
+
 void TIMER15_IRQHandler(void) {
     if (timer_interrupt_flag_get(TIMER15, TIMER_INT_FLAG_UP) == SET)
     {
         timer_interrupt_flag_clear(TIMER15, TIMER_INT_FLAG_UP);
 
         exti_interrupt_enable(EXTI_0);
-        // timer_enable(TIMER14);
+        timer_enable(TIMER14);
 
+        /*
+         * GPIO Toggle will be delete when the project is ready
+         */
         gpio_bit_toggle(GPIOA, GPIO_PIN_7);
+        /*******************************************************/
 
         timer_disable(TIMER15);
     }
 }
 
 void EXTI0_1_IRQHandler(void) {
-    if (exti_interrupt_flag_get(EXTI_0) == SET)    {
+    if (exti_interrupt_flag_get(EXTI_0) == SET)
+    {
         exti_interrupt_flag_clear(EXTI_0);
 
+        /*
+         * GPIO Toggle will be delete when the project is ready
+         */
         gpio_bit_toggle(GPIOA, GPIO_PIN_5);
+        /*******************************************************/
 
-        timer_event_software_generate(TIMER14, TIMER_EVENT_SRC_CH0G);
+        // timer_event_software_generate(TIMER14, TIMER_EVENT_SRC_CH0G);
 
         exti_interrupt_disable(EXTI_0);
     }

src/main.c

@@ -25,13 +25,14 @@ int main(void)
     /* configure systick */
     systick_config();
     /* configure ultrasonic board hardware */
-    ultrasonic_peripheral_config();
+    ultrasonic_transmit_config();
-    timer15_config();
+
 
 
     /* ---------- debug start ---------- */
-
+    ultrasonic_transmit_delay();
     recevice_exti_config();
+    ultrasonic_echo_timer_config();
 
 
 
@@ -42,6 +43,8 @@ int main(void)
     printf("XLSW-3DP-UltraSonic Analog 300K!\r\n");
     printf("\r\n");
 
+    delay_ms(2000);
+
     while(1)
     {
         delay_ms(50);

src/ultrasonic_driver.c

@@ -60,7 +60,7 @@ void ultrasonic_config(void)
 
     gpio_mode_set(US_TRAN_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, US_TRAN_PIN);
     gpio_output_options_set(US_TRAN_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, US_TRAN_PIN);
-    gpio_af_set(US_TRAN_GPIO_PORT, GPIO_AF_1, US_TRAN_PIN);
+    gpio_af_set(US_TRAN_GPIO_PORT, US_TRAN_AF, US_TRAN_PIN);
 
     timer_oc_parameter_struct timer_ocinitpara;
     timer_parameter_struct    timer_initpara;
@@ -90,11 +90,9 @@ void ultrasonic_config(void)
     timer_auto_reload_shadow_enable(US_TRAN_TIMER);
 
     timer_interrupt_enable(US_TRAN_TIMER, TIMER_INT_UP);
-    // nvic_irq_enable(TIMER2_IRQn, 1);
-    // timer_enable(TIMER2);
 }
 
-void ultrasonic_peripheral_config(void) {
+void ultrasonic_transmit_config(void) {
     led_config();
     usart_config();
     ultrasonic_config();
@@ -123,12 +121,16 @@ void ultrasonic_pwm_out_cycles(uint8_t cycles) {
     // }
 }
 
-void timer15_config(void) {
+void ultrasonic_transmit_delay(void) {
     rcu_periph_clock_enable(RCU_GPIOA);
 
+    /*
+     * GPIO Init will be delete when the project is ready
+     */
     gpio_mode_set(GPIOA, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, GPIO_PIN_7);
     gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_7);
     gpio_bit_write(GPIOA, GPIO_PIN_7, SET);
+    /******************************************/
 
     rcu_periph_clock_enable(RCU_TIMER15);
     timer_deinit(TIMER15);
@@ -167,3 +169,32 @@ void recevice_exti_config(void) {
 
     exti_interrupt_enable(EXTI_0);
 }
+
+void ultrasonic_echo_timer_config(void)
+{
+    rcu_periph_clock_enable(RCU_TIMER14);
+    timer_deinit(TIMER14);
+
+    timer_parameter_struct timer_initpara;
+    timer_struct_para_init(&timer_initpara);
+    timer_initpara.prescaler         =71;
+    timer_initpara.alignedmode       =TIMER_COUNTER_EDGE;
+    timer_initpara.counterdirection  =TIMER_COUNTER_UP;
+    timer_initpara.period            =65535;
+    timer_initpara.clockdivision     =TIMER_CKDIV_DIV1;
+    timer_initpara.repetitioncounter =0;
+    timer_init(TIMER14, &timer_initpara);
+
+    timer_ic_parameter_struct timer_icinitpara;
+    timer_channel_input_struct_para_init(&timer_icinitpara);
+    timer_icinitpara.icpolarity = TIMER_IC_POLARITY_RISING;
+    timer_icinitpara.icselection = TIMER_IC_SELECTION_DIRECTTI;
+    timer_icinitpara.icprescaler = TIMER_IC_PSC_DIV1;
+    timer_icinitpara.icfilter = 0x03; // 设置滤波器
+    timer_input_capture_config(TIMER14, TIMER_CH_0, &timer_icinitpara);
+
+    timer_interrupt_enable(TIMER0, TIMER_INT_UP);
+    nvic_irq_enable(TIMER15_IRQn, 0U);
+
+    // timer_enable(TIMER0);
+}