修改ioc配置

32g431.ioc

@@ -80,6 +80,7 @@ NVIC.DMA1_Channel1_IRQn=true\:0\:0\:false\:false\:true\:false\:true\:true
 NVIC.DebugMonitor_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.ForceEnableDMAVector=true
 NVIC.HardFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
+NVIC.LPUART1_IRQn=true\:0\:0\:false\:false\:true\:true\:true\:true
 NVIC.MemoryManagement_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.NonMaskableInt_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.PendSV_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
@@ -119,9 +120,10 @@ PA7.GPIOParameters=GPIO_Label
 PA7.GPIO_Label=K2
 PA7.Locked=true
 PA7.Signal=GPIO_Output
-PA8.GPIOParameters=GPIO_Label
+PA8.GPIOParameters=PinState,GPIO_Label
 PA8.GPIO_Label=RS485_2_DIR
 PA8.Locked=true
+PA8.PinState=GPIO_PIN_SET
 PA8.Signal=GPIO_Output
 PA9.Locked=true
 PA9.Mode=Asynchronous
@@ -132,9 +134,10 @@ PB10.Signal=LPUART1_RX
 PB11.Locked=true
 PB11.Mode=Asynchronous
 PB11.Signal=LPUART1_TX
-PB12.GPIOParameters=GPIO_Label
+PB12.GPIOParameters=PinState,GPIO_Label
 PB12.GPIO_Label=RS485_1_DIR
 PB12.Locked=true
+PB12.PinState=GPIO_PIN_SET
 PB12.Signal=GPIO_Output
 PB3.GPIOParameters=GPIO_Label
 PB3.GPIO_Label=LED3
@@ -189,7 +192,7 @@ ProjectManager.ToolChainLocation=
 ProjectManager.UAScriptAfterPath=
 ProjectManager.UAScriptBeforePath=
 ProjectManager.UnderRoot=false
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_DMA_Init-DMA-false-HAL-true,4-MX_IWDG_Init-IWDG-false-HAL-true,5-MX_USART1_UART_Init-USART1-false-HAL-true,6-MX_TIM6_Init-TIM6-false-HAL-true,7-MX_FDCAN1_Init-FDCAN1-false-HAL-true,8-MX_LPUART1_UART_Init-LPUART1-false-HAL-true
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_DMA_Init-DMA-false-HAL-true,4-MX_IWDG_Init-IWDG-false-HAL-true,5-MX_USART1_UART_Init-USART1-false-HAL-true,6-MX_TIM6_Init-TIM6-false-HAL-true,7-MX_FDCAN1_Init-FDCAN1-false-HAL-true,8-MX_LPUART1_UART_Init-LPUART1-false-HAL-true,9-MX_USART2_UART_Init-USART2-false-HAL-true
 RCC.ADC12Freq_Value=100000000
 RCC.AHBFreq_Value=100000000
 RCC.APB1Freq_Value=100000000

Core/Inc/stm32g4xx_it.h

@@ -58,6 +58,7 @@ void SysTick_Handler(void);
 void DMA1_Channel1_IRQHandler(void);
 void USART1_IRQHandler(void);
 void TIM6_DAC_IRQHandler(void);
+void LPUART1_IRQHandler(void);
 /* USER CODE BEGIN EFP */
 
 /* USER CODE END EFP */

Core/Src/gpio.c

@@ -51,14 +51,19 @@ void MX_GPIO_Init(void)
   __HAL_RCC_GPIOB_CLK_ENABLE();
 
   /*Configure GPIO pin Output Level */
-  HAL_GPIO_WritePin(GPIOA, K4_Pin|K5_Pin|K1_Pin|K2_Pin
-                          |RS485_2_DIR_Pin, GPIO_PIN_RESET);
+  HAL_GPIO_WritePin(GPIOA, K4_Pin|K5_Pin|K1_Pin|K2_Pin, GPIO_PIN_RESET);
 
   /*Configure GPIO pin Output Level */
   HAL_GPIO_WritePin(K3_GPIO_Port, K3_Pin, GPIO_PIN_RESET);
 
   /*Configure GPIO pin Output Level */
-  HAL_GPIO_WritePin(GPIOB, RS485_1_DIR_Pin|LED3_Pin|LED2_Pin|LED1_Pin, GPIO_PIN_RESET);
+  HAL_GPIO_WritePin(RS485_1_DIR_GPIO_Port, RS485_1_DIR_Pin, GPIO_PIN_SET);
+
+  /*Configure GPIO pin Output Level */
+  HAL_GPIO_WritePin(RS485_2_DIR_GPIO_Port, RS485_2_DIR_Pin, GPIO_PIN_SET);
+
+  /*Configure GPIO pin Output Level */
+  HAL_GPIO_WritePin(GPIOB, LED3_Pin|LED2_Pin|LED1_Pin, GPIO_PIN_RESET);
 
   /*Configure GPIO pins : K4_Pin K5_Pin K1_Pin K2_Pin
                            RS485_2_DIR_Pin */

Core/Src/stm32g4xx_it.c

@@ -56,6 +56,7 @@
 
 /* External variables --------------------------------------------------------*/
 extern DMA_HandleTypeDef hdma_usart1_tx;
+extern UART_HandleTypeDef hlpuart1;
 extern UART_HandleTypeDef huart1;
 extern TIM_HandleTypeDef htim6;
 /* USER CODE BEGIN EV */
@@ -242,6 +243,20 @@ void TIM6_DAC_IRQHandler(void)
   /* USER CODE END TIM6_DAC_IRQn 1 */
 }
 
+/**
+  * @brief This function handles LPUART1 global interrupt.
+  */
+void LPUART1_IRQHandler(void)
+{
+  /* USER CODE BEGIN LPUART1_IRQn 0 */
+
+  /* USER CODE END LPUART1_IRQn 0 */
+  HAL_UART_IRQHandler(&hlpuart1);
+  /* USER CODE BEGIN LPUART1_IRQn 1 */
+
+  /* USER CODE END LPUART1_IRQn 1 */
+}
+
 /* USER CODE BEGIN 1 */
 
 /* USER CODE END 1 */

Core/Src/usart.c

@@ -196,6 +196,9 @@ void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
     GPIO_InitStruct.Alternate = GPIO_AF8_LPUART1;
     HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
 
+    /* LPUART1 interrupt Init */
+    HAL_NVIC_SetPriority(LPUART1_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(LPUART1_IRQn);
   /* USER CODE BEGIN LPUART1_MspInit 1 */
 
   /* USER CODE END LPUART1_MspInit 1 */
@@ -308,6 +311,8 @@ void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
     */
     HAL_GPIO_DeInit(GPIOB, GPIO_PIN_10|GPIO_PIN_11);
 
+    /* LPUART1 interrupt Deinit */
+    HAL_NVIC_DisableIRQ(LPUART1_IRQn);
   /* USER CODE BEGIN LPUART1_MspDeInit 1 */
 
   /* USER CODE END LPUART1_MspDeInit 1 */