Question
Uart recive
Posted on March 11, 2018 at 14:33
hello
i use stm32f107 and use to standard standard peripheral library but now i have use hal drive and i new on it.
i want to build a transmitter receiver.i want when receive data in mcu i get an interrupt .when i use
standard peripheral library i don't have problem and i get interrupt every a byte . i use this code but i get interrupt only one time
how can i fix that?
GPIO_InitTypeDef GPIO_InitStruct;
/* USER CODE END USART2_MspInit 0 */ /* Peripheral clock enable */ __HAL_RCC_USART2_CLK_ENABLE(); __HAL_RCC_GPIOA_CLK_ENABLE();/**USART2 GPIO Configuration
PA2 ------> USART2_TX PA3 ------> USART2_RX */ GPIO_InitStruct.Pin = GPIO_PIN_2; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);GPIO_InitStruct.Pin = GPIO_PIN_3;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT; GPIO_InitStruct.Pull = GPIO_NOPULL; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);/* USART2 interrupt Init */
HAL_NVIC_SetPriority(USART2_IRQn, 1, 0); HAL_NVIC_EnableIRQ(USART2_IRQn); huart2.Instance = USART2; huart2.Init.BaudRate = 115200; huart2.Init.WordLength = UART_WORDLENGTH_8B; huart2.Init.StopBits = UART_STOPBITS_1; huart2.Init.Parity = UART_PARITY_NONE; huart2.Init.Mode = UART_MODE_TX_RX; huart2.Init.HwFlowCtl = UART_HWCONTROL_NONE; huart2.Init.OverSampling = UART_OVERSAMPLING_16; if (HAL_UART_Init(&huart2) != HAL_OK) { _Error_Handler(__FILE__, __LINE__); }if(HAL_UART_Receive_IT(&huart2, RxBuffer1 , 2) != HAL_OK){ Error_Handler(); }void HAL_UART_RxCpltCallback(UART_HandleTypeDef *UartHandle)
{///////Receive Data Here }void USART2_IRQHandler()
{ HAL_UART_IRQHandler(&huart2);}
