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/**
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******************************************************************************
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* @file main.c
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* @author MCU Application Team
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* @brief Main program body
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* @date
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2023 Puya Semiconductor Co.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by Puya under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2016 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "main.h"
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/* Private define ------------------------------------------------------------*/
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#define COUNTOF(__BUFFER__) (sizeof(__BUFFER__) / sizeof(*(__BUFFER__)))
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#define TXSTARTMESSAGESIZE (COUNTOF(aTxStartMessage) - 1)
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#define TXENDMESSAGESIZE (COUNTOF(aTxEndMessage) - 1)
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/* Private variables ---------------------------------------------------------*/
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UART_HandleTypeDef UartHandle;
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uint8_t aTxStartMessage[] = "\r\n UART-Hyperterminal communication based on DMA\r\n Enter 12 characters using keyboard :\r\n";
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uint8_t aTxEndMessage[] = "\r\n Example Finished\r\n";
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uint8_t aRxBuffer[12] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
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/* Private user code ---------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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static void APP_SystemClockConfig(void);
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/**
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* @brief Main program.
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* @retval int
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*/
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int main(void)
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{
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/* Reset of all peripherals, Initializes the Systick */
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HAL_Init();
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/* Configure LED */
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BSP_LED_Init(LED_GREEN);
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/* System clock configuration */
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APP_SystemClockConfig();
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/* Initialize USART2 */
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UartHandle.Instance = USART2;
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UartHandle.Init.BaudRate = 115200;
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UartHandle.Init.WordLength = UART_WORDLENGTH_8B;
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UartHandle.Init.StopBits = UART_STOPBITS_1;
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UartHandle.Init.Parity = UART_PARITY_NONE;
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UartHandle.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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UartHandle.Init.Mode = UART_MODE_TX_RX;
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UartHandle.Init.OverSampling = UART_OVERSAMPLING_16;
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UartHandle.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
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HAL_UART_Init(&UartHandle);
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/* Start the transmission process */
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if(HAL_UART_Transmit_DMA(&UartHandle, (uint8_t*)aTxStartMessage, TXSTARTMESSAGESIZE)!= HAL_OK)
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{
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/* Transfer error in transmission process */
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APP_ErrorHandler();
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}
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/* Put UART peripheral in reception process */
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if (HAL_UART_Receive_DMA(&UartHandle, (uint8_t *)aRxBuffer, 12) != HAL_OK)
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{
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/* Transfer error in reception process */
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APP_ErrorHandler();
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}
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/* Wait for the end of the transfer */
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while (HAL_UART_GetState(&UartHandle) != HAL_UART_STATE_READY)
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{
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}
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/* Send the received Buffer */
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if (HAL_UART_Transmit_DMA(&UartHandle, (uint8_t *)aRxBuffer, 12) != HAL_OK)
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{
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/* Transfer error in transmission process */
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APP_ErrorHandler();
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}
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/* Wait for the end of the transfer */
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while (HAL_UART_GetState(&UartHandle) != HAL_UART_STATE_READY)
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{
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}
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/* Send the End Message */
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if(HAL_UART_Transmit_DMA(&UartHandle, (uint8_t*)aTxEndMessage, TXENDMESSAGESIZE)!= HAL_OK)
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{
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/* Transfer error in transmission process */
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APP_ErrorHandler();
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}
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/* Wait for the end of the transfer */
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while (HAL_UART_GetState(&UartHandle) != HAL_UART_STATE_READY)
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{
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}
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/* Turn on LED if test passes then enter infinite loop */
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BSP_LED_On(LED_GREEN);
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/* Infinite loop */
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while (1)
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{
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}
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}
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/**
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* @brief System clock configuration function
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* @param None
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* @retval None
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*/
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static void APP_SystemClockConfig(void)
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{
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RCC_OscInitTypeDef OscInitstruct = {0};
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RCC_ClkInitTypeDef ClkInitstruct = {0};
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OscInitstruct.OscillatorType = RCC_OSCILLATORTYPE_HSE | RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_LSE |
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RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_HSI48M;
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OscInitstruct.HSEState = RCC_HSE_OFF; /* Disable HSE */
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/* OscInitstruct.HSEFreq = RCC_HSE_16_32MHz; */ /* HSE working frequency range: 16M~32M */
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OscInitstruct.HSI48MState = RCC_HSI48M_OFF; /* Disable HSI48M */
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OscInitstruct.HSIState = RCC_HSI_ON; /* Enable HSI */
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OscInitstruct.LSEState = RCC_LSE_OFF; /* Disable LSE */
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/* OscInitstruct.LSEDriver = RCC_LSEDRIVE_HIGH; */ /* Drive capability level: High */
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OscInitstruct.LSIState = RCC_LSI_OFF; /* Disable LSI */
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OscInitstruct.PLL.PLLState = RCC_PLL_OFF; /* Disable PLL */
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/* OscInitstruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; */ /* PLL clock source: HSE */
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/* OscInitstruct.PLL.PLLMUL = RCC_PLL_MUL6; */ /* PLL multiplication factor: 6 */
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/* Configure Oscillators */
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if(HAL_RCC_OscConfig(&OscInitstruct) != HAL_OK)
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{
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APP_ErrorHandler();
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}
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ClkInitstruct.ClockType = RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
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ClkInitstruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI; /* System clock source: HSI */
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ClkInitstruct.AHBCLKDivider = RCC_SYSCLK_DIV1; /* AHB clock not divided */
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ClkInitstruct.APB1CLKDivider = RCC_HCLK_DIV1; /* APB1 clock not divided */
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ClkInitstruct.APB2CLKDivider = RCC_HCLK_DIV2; /* APB2 clock divided by 2 */
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/* Configure Clocks */
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if(HAL_RCC_ClockConfig(&ClkInitstruct, FLASH_LATENCY_0) != HAL_OK)
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{
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APP_ErrorHandler();
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}
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}
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/**
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* @brief This function is executed in case of error occurrence.
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* @param None
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* @retval None
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*/
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void APP_ErrorHandler(void)
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{
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/* Infinite loop */
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while (1)
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{
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}
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file：pointer to the source file name
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* @param line：assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t *file, uint32_t line)
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{
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/* User can add his own implementation to report the file name and line number,
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for example: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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}
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#endif /* USE_FULL_ASSERT */
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/************************ (C) COPYRIGHT Puya *****END OF FILE******************/
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