From 54ff17a50e195d2a49e6fc830add374d398c2312 Mon Sep 17 00:00:00 2001
From: nitiantuhao <2062405236@qq.com>
Date: Fri, 13 Mar 2026 19:34:49 +0800
Subject: [PATCH] 1.0

---
 Core/Inc/usart.h |  52 ++++++++++++++++++++++
 Core/Src/usart.c | 113 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 165 insertions(+)
 create mode 100644 Core/Inc/usart.h
 create mode 100644 Core/Src/usart.c

diff --git a/Core/Inc/usart.h b/Core/Inc/usart.h
new file mode 100644
index 0000000..fddf86e
--- /dev/null
+++ b/Core/Inc/usart.h
@@ -0,0 +1,52 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    usart.h
+  * @brief   This file contains all the function prototypes for
+  *          the usart.c file
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2026 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __USART_H__
+#define __USART_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+
+/* USER CODE BEGIN Includes */
+
+/* USER CODE END Includes */
+
+extern UART_HandleTypeDef huart4;
+
+/* USER CODE BEGIN Private defines */
+
+/* USER CODE END Private defines */
+
+void MX_UART4_Init(void);
+
+/* USER CODE BEGIN Prototypes */
+
+/* USER CODE END Prototypes */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __USART_H__ */
+
diff --git a/Core/Src/usart.c b/Core/Src/usart.c
new file mode 100644
index 0000000..90708d3
--- /dev/null
+++ b/Core/Src/usart.c
@@ -0,0 +1,113 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    usart.c
+  * @brief   This file provides code for the configuration
+  *          of the USART instances.
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2026 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+/* Includes ------------------------------------------------------------------*/
+#include "usart.h"
+
+/* USER CODE BEGIN 0 */
+
+/* USER CODE END 0 */
+
+UART_HandleTypeDef huart4;
+
+/* UART4 init function */
+void MX_UART4_Init(void)
+{
+
+  /* USER CODE BEGIN UART4_Init 0 */
+
+  /* USER CODE END UART4_Init 0 */
+
+  /* USER CODE BEGIN UART4_Init 1 */
+
+  /* USER CODE END UART4_Init 1 */
+  huart4.Instance = UART4;
+  huart4.Init.BaudRate = 115200;
+  huart4.Init.WordLength = UART_WORDLENGTH_8B;
+  huart4.Init.StopBits = UART_STOPBITS_1;
+  huart4.Init.Parity = UART_PARITY_NONE;
+  huart4.Init.Mode = UART_MODE_TX_RX;
+  huart4.Init.HwFlowCtl = UART_HWCONTROL_NONE;
+  huart4.Init.OverSampling = UART_OVERSAMPLING_16;
+  if (HAL_UART_Init(&huart4) != HAL_OK)
+  {
+    Error_Handler();
+  }
+  /* USER CODE BEGIN UART4_Init 2 */
+
+  /* USER CODE END UART4_Init 2 */
+
+}
+
+void HAL_UART_MspInit(UART_HandleTypeDef* uartHandle)
+{
+
+  GPIO_InitTypeDef GPIO_InitStruct = {0};
+  if(uartHandle->Instance==UART4)
+  {
+  /* USER CODE BEGIN UART4_MspInit 0 */
+
+  /* USER CODE END UART4_MspInit 0 */
+    /* UART4 clock enable */
+    __HAL_RCC_UART4_CLK_ENABLE();
+
+    __HAL_RCC_GPIOC_CLK_ENABLE();
+    /**UART4 GPIO Configuration
+    PC10     ------> UART4_TX
+    PC11     ------> UART4_RX
+    */
+    GPIO_InitStruct.Pin = GPIO_PIN_10|GPIO_PIN_11;
+    GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+    GPIO_InitStruct.Pull = GPIO_NOPULL;
+    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
+    GPIO_InitStruct.Alternate = GPIO_AF8_UART4;
+    HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
+
+  /* USER CODE BEGIN UART4_MspInit 1 */
+
+  /* USER CODE END UART4_MspInit 1 */
+  }
+}
+
+void HAL_UART_MspDeInit(UART_HandleTypeDef* uartHandle)
+{
+
+  if(uartHandle->Instance==UART4)
+  {
+  /* USER CODE BEGIN UART4_MspDeInit 0 */
+
+  /* USER CODE END UART4_MspDeInit 0 */
+    /* Peripheral clock disable */
+    __HAL_RCC_UART4_CLK_DISABLE();
+
+    /**UART4 GPIO Configuration
+    PC10     ------> UART4_TX
+    PC11     ------> UART4_RX
+    */
+    HAL_GPIO_DeInit(GPIOC, GPIO_PIN_10|GPIO_PIN_11);
+
+  /* USER CODE BEGIN UART4_MspDeInit 1 */
+
+  /* USER CODE END UART4_MspDeInit 1 */
+  }
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */