diff options
Diffstat (limited to 'Projects/NUCLEO-WB35CE/Examples_MIX/UART/UART_HyperTerminal_IT/Src/main.c')
| -rw-r--r-- | Projects/NUCLEO-WB35CE/Examples_MIX/UART/UART_HyperTerminal_IT/Src/main.c | 424 |
1 files changed, 424 insertions, 0 deletions
diff --git a/Projects/NUCLEO-WB35CE/Examples_MIX/UART/UART_HyperTerminal_IT/Src/main.c b/Projects/NUCLEO-WB35CE/Examples_MIX/UART/UART_HyperTerminal_IT/Src/main.c new file mode 100644 index 000000000..890cc02c5 --- /dev/null +++ b/Projects/NUCLEO-WB35CE/Examples_MIX/UART/UART_HyperTerminal_IT/Src/main.c @@ -0,0 +1,424 @@ +/* USER CODE BEGIN Header */ +/** + ****************************************************************************** + * @file UART/UART_HyperTerminal_IT/Src/main.c + * @author MCD Application Team + * @brief This sample code shows how to use UART HAL and LL APIs to transmit + * and receive a data buffer with a communication process based on IT; + * The communication is done with the Hyperterminal PC application; + * HAL driver is used to perform UART configuration, + * then TX/RX transfers procedures are based on LL APIs use + ****************************************************************************** + * @attention + * + * <h2><center>© Copyright (c) 2019 STMicroelectronics. + * All rights reserved.</center></h2> + * + * This software component is licensed by ST under BSD 3-Clause license, + * the "License"; You may not use this file except in compliance with the + * License. You may obtain a copy of the License at: + * opensource.org/licenses/BSD-3-Clause + * + ****************************************************************************** + */ +/* USER CODE END Header */ + +/* Includes ------------------------------------------------------------------*/ +#include "main.h" + +/* Private includes ----------------------------------------------------------*/ +/* USER CODE BEGIN Includes */ + +/* USER CODE END Includes */ + +/* Private typedef -----------------------------------------------------------*/ +/* USER CODE BEGIN PTD */ + +/* USER CODE END PTD */ + +/* Private define ------------------------------------------------------------*/ +/* USER CODE BEGIN PD */ + +/* USER CODE END PD */ + +/* Private macro -------------------------------------------------------------*/ +/* USER CODE BEGIN PM */ + +/* USER CODE END PM */ + +/* Private variables ---------------------------------------------------------*/ +UART_HandleTypeDef huart1; + +/* USER CODE BEGIN PV */ + +/* UART handler declaration */ +UART_HandleTypeDef UartHandle; +__IO uint8_t ubTxComplete = 0; +__IO uint8_t ubRxComplete = 0; + +/* Buffer used for transmission */ +uint8_t aTxStartMessage[] = "\n\r ****UART-Hyperterminal communication based on IT (Mixed HAL/LL usage) ****\n\r Enter 10 characters using keyboard :\n\r"; +__IO uint32_t uwTxIndex = 0; +uint8_t ubSizeToSend = sizeof(aTxStartMessage); +uint8_t aTxEndMessage[] = "\n\r Example Finished\n\r"; + +/* Buffer used for reception */ +uint8_t aRxBuffer[RXBUFFERSIZE]; +__IO uint32_t uwRxIndex = 0; + +/* USER CODE END PV */ + +/* Private function prototypes -----------------------------------------------*/ +void SystemClock_Config(void); +static void MX_GPIO_Init(void); +static void MX_USART1_UART_Init(void); +/* USER CODE BEGIN PFP */ +/* USER CODE END PFP */ + +/* Private user code ---------------------------------------------------------*/ +/* USER CODE BEGIN 0 */ + +/* USER CODE END 0 */ + +/** + * @brief The application entry point. + * @retval int + */ +int main(void) +{ + /* USER CODE BEGIN 1 */ +/* STM32WBxx HAL library initialization: + - Configure the Flash prefetch + - Systick timer is configured by default as source of time base, but user + can eventually implement his proper time base source (a general purpose + timer for example or other time source), keeping in mind that Time base + duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and + handled in milliseconds basis. + - Set NVIC Group Priority to 4 + - Low Level Initialization + */ + /* USER CODE END 1 */ + + /* MCU Configuration--------------------------------------------------------*/ + + /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ + HAL_Init(); + + /* USER CODE BEGIN Init */ + /* Configure leds */ + BSP_LED_Init(LED1); + BSP_LED_Init(LED2); + BSP_LED_Init(LED3); + + /* USER CODE END Init */ + + /* Configure the system clock */ + SystemClock_Config(); + + /* USER CODE BEGIN SysInit */ + + /* USER CODE END SysInit */ + + /* Initialize all configured peripherals */ + MX_GPIO_Init(); + MX_USART1_UART_Init(); + /* USER CODE BEGIN 2 */ + + /*## Configure UART peripheral for reception process (using LL) ##########*/ + /* Any data received will be stored "aRxBuffer" buffer : the number max of + data received is RXBUFFERSIZE */ + /* Enable RXNE and Error interrupts */ + LL_USART_EnableIT_RXNE(USART1); + LL_USART_EnableIT_ERROR(USART1); + + /*## Start the transmission process (using LL) *##########################*/ + /* While the UART in reception process, user can transmit data from + "aTxStartMessage" buffer */ + /* Start USART transmission : Will initiate TXE interrupt after TDR register is empty */ + LL_USART_TransmitData8(USART1, aTxStartMessage[uwTxIndex++]); + + /* Enable TXE interrupt */ + LL_USART_EnableIT_TXE(USART1); + + /*## Wait for the end of the transfer ###################################*/ + /* USART IRQ handler is not anymore routed to HAL_UART_IRQHandler() function + and is now based on LL API functions use. + Therefore, use of HAL IT based services is no more possible. */ + /* Once TX transfer is completed, LED1 will turn On. + Then, when RX transfer is completed, LED2 will turn On. */ + while (ubTxComplete == 0) + { + } + BSP_LED_On(LED1); + + while (ubRxComplete == 0) + { + } + BSP_LED_On(LED2); + + + /*## Send the received Buffer ###########################################*/ + /* Even if use of HAL IT based services is no more possible, use of HAL Polling based services + (as Transmit in polling mode) is still possible. */ + if(HAL_UART_Transmit(&huart1, (uint8_t*)aRxBuffer, RXBUFFERSIZE, 1000)!= HAL_OK) + { + /* Transfer error in transmission process */ + Error_Handler(); + } + + /*## Send the End Message ###############################################*/ + if(HAL_UART_Transmit(&huart1, (uint8_t*)aTxEndMessage, TXENDMESSAGESIZE, 1000)!= HAL_OK) + { + /* Transfer error in transmission process */ + Error_Handler(); + } + + /* USER CODE END 2 */ + + /* Infinite loop */ + /* USER CODE BEGIN WHILE */ + while (1) + { + /* USER CODE END WHILE */ + + /* USER CODE BEGIN 3 */ + } + /* USER CODE END 3 */ +} + +/** + * @brief System Clock Configuration + * @retval None + */ +void SystemClock_Config(void) +{ + RCC_OscInitTypeDef RCC_OscInitStruct = {0}; + RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; + + /** Initializes the CPU, AHB and APB busses clocks + */ + RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI; + RCC_OscInitStruct.MSIState = RCC_MSI_ON; + RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT; + RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6; + RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; + RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI; + RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1; + RCC_OscInitStruct.PLL.PLLN = 32; + RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; + RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2; + RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2; + if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) + { + Error_Handler(); + } + /** Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers + */ + RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK4|RCC_CLOCKTYPE_HCLK2 + |RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK + |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; + RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; + RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; + RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; + RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; + RCC_ClkInitStruct.AHBCLK2Divider = RCC_SYSCLK_DIV2; + RCC_ClkInitStruct.AHBCLK4Divider = RCC_SYSCLK_DIV1; + + if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) + { + Error_Handler(); + } + /** Initializes the peripherals clocks + */ + /* USER CODE BEGIN Smps */ + + /* USER CODE END Smps */ +} + +/** + * @brief USART1 Initialization Function + * @param None + * @retval None + */ +static void MX_USART1_UART_Init(void) +{ + + /* USER CODE BEGIN USART1_Init 0 */ + + /* USER CODE END USART1_Init 0 */ + + /* USER CODE BEGIN USART1_Init 1 */ + + /* USER CODE END USART1_Init 1 */ + huart1.Instance = USART1; + huart1.Init.BaudRate = 9600; + huart1.Init.WordLength = UART_WORDLENGTH_8B; + huart1.Init.StopBits = UART_STOPBITS_1; + huart1.Init.Parity = UART_PARITY_ODD; + huart1.Init.Mode = UART_MODE_TX_RX; + huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; + huart1.Init.OverSampling = UART_OVERSAMPLING_16; + huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; + huart1.Init.ClockPrescaler = UART_PRESCALER_DIV1; + huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT; + if (HAL_UART_Init(&huart1) != HAL_OK) + { + Error_Handler(); + } + if (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK) + { + Error_Handler(); + } + if (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK) + { + Error_Handler(); + } + if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK) + { + Error_Handler(); + } + /* USER CODE BEGIN USART1_Init 2 */ + + /* USER CODE END USART1_Init 2 */ + +} + +/** + * @brief GPIO Initialization Function + * @param None + * @retval None + */ +static void MX_GPIO_Init(void) +{ + + /* GPIO Ports Clock Enable */ + __HAL_RCC_GPIOB_CLK_ENABLE(); + +} + +/* USER CODE BEGIN 4 */ + +/** + * @brief Rx Transfer completed callback + * @note This example shows a simple way to report end of IT Rx transfer, and + * you can add your own implementation. + * @retval None + */ +void UART_CharReception_Callback(void) +{ + /* Read Received character. RXNE flag is cleared by reading of RDR register */ + aRxBuffer[uwRxIndex++] = LL_USART_ReceiveData8(USART1); + + /* Check if reception is completed (expected nb of bytes has been received) */ + if (uwRxIndex == RXBUFFERSIZE) + { + /* Set Reception complete boolean to 1 */ + ubRxComplete = 1; + } +} + +/** + * @brief Function called for achieving next TX Byte sending + * @retval None + */ +void UART_TXEmpty_Callback(void) +{ + if(uwTxIndex == (ubSizeToSend - 1)) + { + /* Disable TXE interrupt */ + LL_USART_DisableIT_TXE(USART1); + + /* Enable TC interrupt */ + LL_USART_EnableIT_TC(USART1); + } + + /* Fill TDR with a new char */ + LL_USART_TransmitData8(USART1, aTxStartMessage[uwTxIndex++]); +} + +/** + * @brief Function called at completion of last byte transmission + * @retval None + */ +void UART_CharTransmitComplete_Callback(void) +{ + if(uwTxIndex == sizeof(aTxStartMessage)) + { + uwTxIndex = 0; + + /* Disable TC interrupt */ + LL_USART_DisableIT_TC(USART1); + + /* Set Tx complete boolean to 1 */ + ubTxComplete = 1; + } +} + +/** + * @brief UART error callbacks + * @note This example shows a simple way to report transfer error, and you can + * add your own implementation. + * @retval None + */ +void UART_Error_Callback(void) +{ + __IO uint32_t isr_reg; + + /* Disable USARTx_IRQn */ + NVIC_DisableIRQ(USART1_IRQn); + + /* Error handling example : + - Read USART ISR register to identify flag that leads to IT raising + - Perform corresponding error handling treatment according to flag + */ + isr_reg = LL_USART_ReadReg(USART1, ISR); + if (isr_reg & LL_USART_ISR_NE) + { + /* Turn LED3 on: Transfer error in reception/transmission process */ + BSP_LED_On(LED3); + } + else + { + /* Turn LED3 on: Transfer error in reception/transmission process */ + BSP_LED_On(LED3); + } +} + + +/* USER CODE END 4 */ + +/** + * @brief This function is executed in case of error occurrence. + * @retval None + */ +void Error_Handler(void) +{ + /* USER CODE BEGIN Error_Handler_Debug */ + /* User can add his own implementation to report the HAL error return state */ + /* Toggle LED3 for error */ + while(1) + { + BSP_LED_Toggle(LED3); + HAL_Delay(1000); + } + /* USER CODE END Error_Handler_Debug */ +} + +#ifdef USE_FULL_ASSERT +/** + * @brief Reports the name of the source file and the source line number + * where the assert_param error has occurred. + * @param file: pointer to the source file name + * @param line: assert_param error line source number + * @retval None + */ +void assert_failed(uint8_t *file, uint32_t line) +{ + /* USER CODE BEGIN 6 */ + /* User can add his own implementation to report the file name and line number, + tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ + /* USER CODE END 6 */ +} +#endif /* USE_FULL_ASSERT */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |