Initial commit: my SECS2 project

Core/Src/usart.c

@@ -0,0 +1,83 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file    usart.c
+  * @brief   This file provides code for the configuration
+  *          of the USART instances.
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2025 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 */
+
+/* USART2 init function */
+
+void MX_USART2_UART_Init(void)
+{
+
+  /* USER CODE BEGIN USART2_Init 0 */
+
+  /* USER CODE END USART2_Init 0 */
+
+  LL_USART_InitTypeDef USART_InitStruct = {0};
+
+  LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+  /* Peripheral clock enable */
+  LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_USART2);
+
+  LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_GPIOA);
+  /**USART2 GPIO Configuration
+  PA2   ------> USART2_TX
+  PA3   ------> USART2_RX
+  */
+  GPIO_InitStruct.Pin = LL_GPIO_PIN_2;
+  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
+  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_HIGH;
+  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
+  LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+  GPIO_InitStruct.Pin = LL_GPIO_PIN_3;
+  GPIO_InitStruct.Mode = LL_GPIO_MODE_FLOATING;
+  LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+
+  /* USART2 interrupt Init */
+  NVIC_SetPriority(USART2_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
+  NVIC_EnableIRQ(USART2_IRQn);
+
+  /* USER CODE BEGIN USART2_Init 1 */
+
+  /* USER CODE END USART2_Init 1 */
+  USART_InitStruct.BaudRate = 115200;
+  USART_InitStruct.DataWidth = LL_USART_DATAWIDTH_8B;
+  USART_InitStruct.StopBits = LL_USART_STOPBITS_1;
+  USART_InitStruct.Parity = LL_USART_PARITY_NONE;
+  USART_InitStruct.TransferDirection = LL_USART_DIRECTION_TX_RX;
+  USART_InitStruct.HardwareFlowControl = LL_USART_HWCONTROL_NONE;
+  USART_InitStruct.OverSampling = LL_USART_OVERSAMPLING_16;
+  LL_USART_Init(USART2, &USART_InitStruct);
+  LL_USART_ConfigAsyncMode(USART2);
+  LL_USART_Enable(USART2);
+  /* USER CODE BEGIN USART2_Init 2 */
+
+  /* USER CODE END USART2_Init 2 */
+
+}
+
+/* USER CODE BEGIN 1 */
+
+/* USER CODE END 1 */