commit for rotary encoder input pin config with EXTI interrupt line. && modified GPIO pin with named user label.

Core/Inc/main.h

@@ -57,6 +57,16 @@ void Error_Handler(void);
 /* USER CODE END EFP */
 
 /* Private defines -----------------------------------------------------------*/
+#define ENCODER_A_EXTI0_Pin GPIO_PIN_0
+#define ENCODER_A_EXTI0_GPIO_Port GPIOA
+#define ENCODER_A_EXTI0_EXTI_IRQn EXTI0_1_IRQn
+#define ENCODER_B_INPUT_Pin GPIO_PIN_1
+#define ENCODER_B_INPUT_GPIO_Port GPIOA
+#define ENCODER_S_EXTI4_Pin GPIO_PIN_4
+#define ENCODER_S_EXTI4_GPIO_Port GPIOA
+#define ENCODER_S_EXTI4_EXTI_IRQn EXTI4_15_IRQn
+#define BUZZER_PWM_OUT_Pin GPIO_PIN_8
+#define BUZZER_PWM_OUT_GPIO_Port GPIOA
 
 /* USER CODE BEGIN Private defines */
 

Core/Inc/stm32g0xx_it.h

@@ -48,6 +48,8 @@ extern "C" {
 /* Exported functions prototypes ---------------------------------------------*/
 void NMI_Handler(void);
 void HardFault_Handler(void);
+void EXTI0_1_IRQHandler(void);
+void EXTI4_15_IRQHandler(void);
 void DMA1_Channel1_IRQHandler(void);
 void DMA1_Channel2_3_IRQHandler(void);
 void TIM17_IRQHandler(void);

Core/Src/gpio.c

@@ -67,16 +67,33 @@ void MX_GPIO_Init(void)
   GPIO_InitStruct.Pull = GPIO_NOPULL;
   HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
 
-  /*Configure GPIO pins : PA0 PA1 PA4 PA5
-                           PA6 PA7 PA11 PA12
-                           PA15 */
-  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_1|GPIO_PIN_4|GPIO_PIN_5
-                          |GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_11|GPIO_PIN_12
-                          |GPIO_PIN_15;
+  /*Configure GPIO pins : ENCODER_A_EXTI0_Pin ENCODER_S_EXTI4_Pin */
+  GPIO_InitStruct.Pin = ENCODER_A_EXTI0_Pin|ENCODER_S_EXTI4_Pin;
+  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING;
+  GPIO_InitStruct.Pull = GPIO_NOPULL;
+  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+  /*Configure GPIO pin : ENCODER_B_INPUT_Pin */
+  GPIO_InitStruct.Pin = ENCODER_B_INPUT_Pin;
+  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
+  GPIO_InitStruct.Pull = GPIO_NOPULL;
+  HAL_GPIO_Init(ENCODER_B_INPUT_GPIO_Port, &GPIO_InitStruct);
+
+  /*Configure GPIO pins : PA5 PA6 PA7 PA11
+                           PA12 PA15 */
+  GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_11
+                          |GPIO_PIN_12|GPIO_PIN_15;
   GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
   GPIO_InitStruct.Pull = GPIO_NOPULL;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
+  /* EXTI interrupt init*/
+  HAL_NVIC_SetPriority(EXTI0_1_IRQn, 3, 0);
+  HAL_NVIC_EnableIRQ(EXTI0_1_IRQn);
+
+  HAL_NVIC_SetPriority(EXTI4_15_IRQn, 3, 0);
+  HAL_NVIC_EnableIRQ(EXTI4_15_IRQn);
+
 }
 
 /* USER CODE BEGIN 2 */

Core/Src/stm32g0xx_it.c

@@ -104,6 +104,34 @@ void HardFault_Handler(void)
 /* please refer to the startup file (startup_stm32g0xx.s).                    */
 /******************************************************************************/
 
+/**
+  * @brief This function handles EXTI line 0 and line 1 interrupts.
+  */
+void EXTI0_1_IRQHandler(void)
+{
+  /* USER CODE BEGIN EXTI0_1_IRQn 0 */
+
+  /* USER CODE END EXTI0_1_IRQn 0 */
+  HAL_GPIO_EXTI_IRQHandler(ENCODER_A_EXTI0_Pin);
+  /* USER CODE BEGIN EXTI0_1_IRQn 1 */
+
+  /* USER CODE END EXTI0_1_IRQn 1 */
+}
+
+/**
+  * @brief This function handles EXTI line 4 to 15 interrupts.
+  */
+void EXTI4_15_IRQHandler(void)
+{
+  /* USER CODE BEGIN EXTI4_15_IRQn 0 */
+
+  /* USER CODE END EXTI4_15_IRQn 0 */
+  HAL_GPIO_EXTI_IRQHandler(ENCODER_S_EXTI4_Pin);
+  /* USER CODE BEGIN EXTI4_15_IRQn 1 */
+
+  /* USER CODE END EXTI4_15_IRQn 1 */
+}
+
 /**
   * @brief This function handles DMA1 channel 1 interrupt.
   */

Core/Src/tim.c

@@ -123,12 +123,12 @@ void HAL_TIM_MspPostInit(TIM_HandleTypeDef* timHandle)
     /**TIM1 GPIO Configuration
     PA8     ------> TIM1_CH1
     */
-    GPIO_InitStruct.Pin = GPIO_PIN_8;
+    GPIO_InitStruct.Pin = BUZZER_PWM_OUT_Pin;
     GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
     GPIO_InitStruct.Pull = GPIO_NOPULL;
     GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
     GPIO_InitStruct.Alternate = GPIO_AF2_TIM1;
-    HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+    HAL_GPIO_Init(BUZZER_PWM_OUT_GPIO_Port, &GPIO_InitStruct);
 
   /* USER CODE BEGIN TIM1_MspPostInit 1 */