From 33a2cc8fb47da9570b682530fe901545c30e192b Mon Sep 17 00:00:00 2001
From: Erick Ahmed <engineering@erickahmed.com>
Date: Thu, 18 Jun 2026 15:02:19 +0200
Subject: [PATCH] Enable USART1 global interrupt

---
 Core/Inc/stm32f4xx_it.h      |  1 +
 Core/Src/stm32f4xx_hal_msp.c |  6 ++++++
 Core/Src/stm32f4xx_it.c      | 15 +++++++++++++++
 can_logger.ioc               |  1 +
 4 files changed, 23 insertions(+)

diff --git a/Core/Inc/stm32f4xx_it.h b/Core/Inc/stm32f4xx_it.h
index 08a2693..d4eaf0d 100644
--- a/Core/Inc/stm32f4xx_it.h
+++ b/Core/Inc/stm32f4xx_it.h
@@ -52,6 +52,7 @@ void MemManage_Handler(void);
 void BusFault_Handler(void);
 void UsageFault_Handler(void);
 void DebugMon_Handler(void);
+void USART1_IRQHandler(void);
 void SDIO_IRQHandler(void);
 void TIM6_DAC_IRQHandler(void);
 void DMA2_Stream3_IRQHandler(void);
diff --git a/Core/Src/stm32f4xx_hal_msp.c b/Core/Src/stm32f4xx_hal_msp.c
index 61835fe..cfd77ff 100644
--- a/Core/Src/stm32f4xx_hal_msp.c
+++ b/Core/Src/stm32f4xx_hal_msp.c
@@ -392,6 +392,9 @@ void HAL_UART_MspInit(UART_HandleTypeDef* huart)
 
     __HAL_LINKDMA(huart,hdmatx,hdma_usart1_tx);
 
+    /* USART1 interrupt Init */
+    HAL_NVIC_SetPriority(USART1_IRQn, 5, 0);
+    HAL_NVIC_EnableIRQ(USART1_IRQn);
     /* USER CODE BEGIN USART1_MspInit 1 */
 
     /* USER CODE END USART1_MspInit 1 */
@@ -424,6 +427,9 @@ void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)
 
     /* USART1 DMA DeInit */
     HAL_DMA_DeInit(huart->hdmatx);
+
+    /* USART1 interrupt DeInit */
+    HAL_NVIC_DisableIRQ(USART1_IRQn);
     /* USER CODE BEGIN USART1_MspDeInit 1 */
 
     /* USER CODE END USART1_MspDeInit 1 */
diff --git a/Core/Src/stm32f4xx_it.c b/Core/Src/stm32f4xx_it.c
index 410f57b..d121dda 100644
--- a/Core/Src/stm32f4xx_it.c
+++ b/Core/Src/stm32f4xx_it.c
@@ -59,6 +59,7 @@ extern DMA_HandleTypeDef hdma_sdio_rx;
 extern DMA_HandleTypeDef hdma_sdio_tx;
 extern SD_HandleTypeDef hsd;
 extern DMA_HandleTypeDef hdma_usart1_tx;
+extern UART_HandleTypeDef huart1;
 extern TIM_HandleTypeDef htim6;
 
 /* USER CODE BEGIN EV */
@@ -163,6 +164,20 @@ void DebugMon_Handler(void)
 /* please refer to the startup file (startup_stm32f4xx.s).                    */
 /******************************************************************************/
 
+/**
+  * @brief This function handles USART1 global interrupt.
+  */
+void USART1_IRQHandler(void)
+{
+  /* USER CODE BEGIN USART1_IRQn 0 */
+
+  /* USER CODE END USART1_IRQn 0 */
+  HAL_UART_IRQHandler(&huart1);
+  /* USER CODE BEGIN USART1_IRQn 1 */
+
+  /* USER CODE END USART1_IRQn 1 */
+}
+
 /**
   * @brief This function handles SDIO global interrupt.
   */
diff --git a/can_logger.ioc b/can_logger.ioc
index 170b21c..2fc928d 100644
--- a/can_logger.ioc
+++ b/can_logger.ioc
@@ -124,6 +124,7 @@ NVIC.SysTick_IRQn=true\:15\:0\:false\:false\:false\:true\:false\:true\:false
 NVIC.TIM6_DAC_IRQn=true\:15\:0\:false\:false\:true\:false\:false\:true\:true
 NVIC.TimeBase=TIM6_DAC_IRQn
 NVIC.TimeBaseIP=TIM6
+NVIC.USART1_IRQn=true\:5\:0\:false\:false\:true\:true\:true\:true\:true
 NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false\:false
 PA10.Mode=Asynchronous
 PA10.Signal=USART1_RX