From 82afbd492a1dcb2695f153d84c12477dc17baba6 Mon Sep 17 00:00:00 2001
From: YunHorn Technology <dp.s@yunhorn.com>
Date: Tue, 8 Aug 2023 14:13:22 +0800
Subject: [PATCH]  fix usart2 tx issue

---
 Core/Src/dma.c          |  3 +++
 Core/Src/stm32wlxx_it.c | 17 ++++++++++++++++-
 Core/Src/usart.c        |  2 +-
 3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/Core/Src/dma.c b/Core/Src/dma.c
index 2c4349b..40e3e90 100644
--- a/Core/Src/dma.c
+++ b/Core/Src/dma.c
@@ -68,6 +68,9 @@ void MX_DMA_Init(void)
     HAL_NVIC_EnableIRQ(DMA1_Channel5_IRQn);
     // **** I2C2
 #endif
+    /* DMA1_Channel6_IRQn interrupt configuration */
+    HAL_NVIC_SetPriority(DMA1_Channel6_IRQn, 0, 0);
+    HAL_NVIC_EnableIRQ(DMA1_Channel6_IRQn);
 
 
 }
diff --git a/Core/Src/stm32wlxx_it.c b/Core/Src/stm32wlxx_it.c
index 83f0fac..dcc17f5 100644
--- a/Core/Src/stm32wlxx_it.c
+++ b/Core/Src/stm32wlxx_it.c
@@ -312,12 +312,27 @@ void DMA1_Channel5_IRQHandler(void)
   /* USER CODE BEGIN DMA1_Channel5_IRQn 0 */
 
   /* USER CODE END DMA1_Channel5_IRQn 0 */
-  HAL_DMA_IRQHandler(&hdma_usart2_tx);
+	HAL_DMA_IRQHandler(&hdma_i2c2_tx);
   /* USER CODE BEGIN DMA1_Channel5_IRQn 1 */
 
   /* USER CODE END DMA1_Channel5_IRQn 1 */
 }
 
+/**
+  * @brief This function handles DMA1 Channel 6 Interrupt.
+  */
+void DMA1_Channel6_IRQHandler(void)
+{
+  /* USER CODE BEGIN DMA1_Channel6_IRQn 0 */
+
+  /* USER CODE END DMA1_Channel6_IRQn 0 */
+	HAL_DMA_IRQHandler(&hdma_usart2_tx);
+  /* USER CODE BEGIN DMA1_Channel5_IRQn 1 */
+
+  /* USER CODE END DMA1_Channel5_IRQn 1 */
+}
+
+
 /**
  * @brief This function handles SPI1 Interrupt.
  */
diff --git a/Core/Src/usart.c b/Core/Src/usart.c
index 8210f4a..e5dd91e 100644
--- a/Core/Src/usart.c
+++ b/Core/Src/usart.c
@@ -109,7 +109,7 @@ void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
 
     /* USART2 DMA Init */
     /* USART2_TX Init */
-    hdma_usart2_tx.Instance = DMA1_Channel5;
+    hdma_usart2_tx.Instance = DMA1_Channel6;
     hdma_usart2_tx.Init.Request = DMA_REQUEST_USART2_TX;
     hdma_usart2_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
     hdma_usart2_tx.Init.PeriphInc = DMA_PINC_DISABLE;