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@ -23,7 +23,7 @@
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/* USER CODE BEGIN Includes */
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#include "SEGGER_RTT.h"
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#include "stm32g0b1xx.h"
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#include "uart.h"
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#include "stm32g0xx_hal_cortex.h"
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#include <stdint.h>
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#include <stdio.h>
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/* USER CODE END Includes */
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@ -44,8 +44,6 @@
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/* USER CODE END PM */
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/* Private variables ---------------------------------------------------------*/
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UART_HandleTypeDef huart1;
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DMA_HandleTypeDef hdma_usart1_rx;
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/* USER CODE BEGIN PV */
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@ -54,16 +52,33 @@ DMA_HandleTypeDef hdma_usart1_rx;
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/* Private function prototypes -----------------------------------------------*/
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void SystemClock_Config(void);
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static void MX_GPIO_Init(void);
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static void MX_DMA_Init(void);
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static void MX_USART1_UART_Init(void);
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/* USER CODE BEGIN PFP */
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/* USER CODE END PFP */
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/* Private user code ---------------------------------------------------------*/
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/* USER CODE BEGIN 0 */
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#define BUFFER_SIZE 64
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#define BUFFER_SIZE 8
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uint8_t rxBuffer[BUFFER_SIZE];
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void init_UART1(){
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USART1->CR1 &= ~USART_CR1_UE;
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RCC->APBENR2 |= RCC_APBENR2_USART1EN;
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RCC->IOPENR |= RCC_IOPENR_GPIOCEN;
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GPIOC->MODER &= ~GPIO_MODER_MODE5; // Alternate function mode on RX pin
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GPIOC->MODER |= GPIO_MODER_MODE5_1;
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GPIOC->AFR[0] &= GPIO_AFRL_AFSEL5;
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GPIOC->AFR[0] |= 1 << GPIO_AFRL_AFSEL5_Pos;
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USART1->BRR = 128; // 32000000÷250000
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USART1->CR3 |= USART_CR3_EIE;
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USART1->CR1 = USART_CR1_RE;
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USART1->CR1 |= USART_CR1_UE;
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HAL_NVIC_SetPriority(USART1_IRQn, 0, 0);
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HAL_NVIC_EnableIRQ(USART1_IRQn);
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}
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/* USER CODE END 0 */
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/**
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@ -95,17 +110,31 @@ int main(void)
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/* Initialize all configured peripherals */
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MX_GPIO_Init();
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MX_DMA_Init();
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MX_USART1_UART_Init();
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/* USER CODE BEGIN 2 */
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HAL_UART_Receive_DMA(&huart1, rxBuffer, BUFFER_SIZE);
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init_UART1();
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printf("CR1 init: 0x%02lX\n", USART1->CR1 );
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printf("CR2 init: 0x%02lX\n", USART1->CR2 );
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printf("CR3 init: 0x%02lX\n", USART1->CR3 );
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printf("BRR init: 0x%02lX\n", USART1->BRR );
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printf("GTPR init: 0x%02lX\n", USART1->GTPR );
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printf("RTOR init: 0x%02lX\n", USART1->RTOR );
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printf("RQR init: 0x%02lX\n", USART1->RQR );
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printf("ISR init: 0x%02lX\n", USART1->ISR );
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printf("ICR init: 0x%02lX\n", USART1->ICR );
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printf("RDR init: 0x%02lX\n", USART1->RDR );
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printf("TDR init: 0x%02lX\n", USART1->TDR );
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printf("PRESC init: 0x%02lX\n", USART1->PRESC);
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/* USER CODE END 2 */
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/* Infinite loop */
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/* USER CODE BEGIN WHILE */
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//HAL_UART_Receive_DMA(&huart1, rxBuffer, BUFFER_SIZE);
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while (1)
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{
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printf("buf: %s\n", rxBuffer);
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if(USART1->ISR & USART_ISR_RXNE_RXFNE)
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printf("char: '%c'\n", USART1->RDR);
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/* USER CODE END WHILE */
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/* USER CODE BEGIN 3 */
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@ -158,73 +187,6 @@ void SystemClock_Config(void)
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}
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/**
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* @brief USART1 Initialization Function
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* @param None
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* @retval None
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*/
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static void MX_USART1_UART_Init(void)
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{
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/* USER CODE BEGIN USART1_Init 0 */
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/* USER CODE END USART1_Init 0 */
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/* USER CODE BEGIN USART1_Init 1 */
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/* USER CODE END USART1_Init 1 */
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huart1.Instance = USART1;
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huart1.Init.BaudRate = 250000;
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huart1.Init.WordLength = UART_WORDLENGTH_8B;
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huart1.Init.StopBits = UART_STOPBITS_1;
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huart1.Init.Parity = UART_PARITY_NONE;
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huart1.Init.Mode = UART_MODE_TX_RX;
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huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
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huart1.Init.OverSampling = UART_OVERSAMPLING_16;
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huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
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huart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;
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huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
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if (HAL_UART_Init(&huart1) != HAL_OK)
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{
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Error_Handler();
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}
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if (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
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{
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Error_Handler();
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}
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if (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
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{
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Error_Handler();
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}
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if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK)
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{
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Error_Handler();
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}
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/* USER CODE BEGIN USART1_Init 2 */
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/* USER CODE END USART1_Init 2 */
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}
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/**
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* Enable DMA controller clock
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*/
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static void MX_DMA_Init(void)
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{
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/* DMA controller clock enable */
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__HAL_RCC_DMA1_CLK_ENABLE();
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/* DMA interrupt init */
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/* DMA1_Channel1_IRQn interrupt configuration */
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HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);
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HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);
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/* DMA1_Ch4_7_DMA2_Ch1_5_DMAMUX1_OVR_IRQn interrupt configuration */
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HAL_NVIC_SetPriority(DMA1_Ch4_7_DMA2_Ch1_5_DMAMUX1_OVR_IRQn, 0, 0);
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HAL_NVIC_EnableIRQ(DMA1_Ch4_7_DMA2_Ch1_5_DMAMUX1_OVR_IRQn);
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}
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/**
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* @brief GPIO Initialization Function
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* @param None
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* @retval None
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@ -236,7 +198,6 @@ static void MX_GPIO_Init(void)
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/* GPIO Ports Clock Enable */
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__HAL_RCC_GPIOF_CLK_ENABLE();
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__HAL_RCC_GPIOC_CLK_ENABLE();
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/* USER CODE BEGIN MX_GPIO_Init_2 */
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/* USER CODE END MX_GPIO_Init_2 */
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