【NUCLEO-F042】写个小程序玩玩

******************************************************************************

  */

/* Includes ------------------------------------------------------------------*/

#include "stm32f0xx_hal.h"



/* USER CODE BEGIN Includes */



/* USER CODE END Includes */



/* Private variables ---------------------------------------------------------*/

UART_HandleTypeDef huart2;



/* USER CODE BEGIN PV */

/* Private variables ---------------------------------------------------------*/



/* USER CODE END PV */



/* Private function prototypes -----------------------------------------------*/

void SystemClock_Config(void);

static void MX_GPIO_Init(void);

static void MX_USART2_UART_Init(void);



/* USER CODE BEGIN PFP */

/* Private function prototypes -----------------------------------------------*/



/* USER CODE END PFP */



/* USER CODE BEGIN 0 */

uint8_t txBuffer[] = "A simple test program by fengzi!\r\n";



/* USER CODE END 0 */



int main(void)

{



  /* USER CODE BEGIN 1 */



  /* USER CODE END 1 */



  /* MCU Configuration----------------------------------------------------------*/



  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */

  HAL_Init();



  /* Configure the system clock */

  SystemClock_Config();



  /* Initialize all configured peripherals */

  MX_GPIO_Init();

  MX_USART2_UART_Init();



  /* USER CODE BEGIN 2 */



  /* USER CODE END 2 */



  /* Infinite loop */

  /* USER CODE BEGIN WHILE */

  while (1)

  {

  /* USER CODE END WHILE */



  /* USER CODE BEGIN 3 */

    HAL_GPIO_TogglePin(LD3_GPIO_Port,LD3_Pin);

    HAL_UART_Transmit(&huart2,txBuffer,sizeof(txBuffer),0xFFFF);

    HAL_Delay(500);



  }

  /* USER CODE END 3 */



}



/** System Clock Configuration

*/

void SystemClock_Config(void)

{



  RCC_OscInitTypeDef RCC_OscInitStruct;

  RCC_ClkInitTypeDef RCC_ClkInitStruct;



  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;

  RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS;

  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;

  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL12;

  RCC_OscInitStruct.PLL.PREDIV = RCC_PREDIV_DIV2;

  HAL_RCC_OscConfig(&RCC_OscInitStruct);



  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK

                              |RCC_CLOCKTYPE_PCLK1;

  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1);



  HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);



  HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);



  /* SysTick_IRQn interrupt configuration */

  HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);

}



/* USART2 init function */

void MX_USART2_UART_Init(void)

{



  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;

  huart2.Init.OneBitSampling = UART_ONEBIT_SAMPLING_DISABLED ;

  huart2.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;

  HAL_UART_Init(&huart2);



}



/** Configure pins as 

        * Analog 

        * Input 

        * Output

        * EVENT_OUT

        * EXTI

*/

void MX_GPIO_Init(void)

{



  GPIO_InitTypeDef GPIO_InitStruct;



  /* GPIO Ports Clock Enable */

  __GPIOF_CLK_ENABLE();

  __GPIOA_CLK_ENABLE();

  __GPIOB_CLK_ENABLE();



  /*Configure GPIO pin Output Level */

  HAL_GPIO_WritePin(LD3_GPIO_Port, LD3_Pin, GPIO_PIN_RESET);



  /*Configure GPIO pin : LD3_Pin */

  GPIO_InitStruct.Pin = LD3_Pin;

  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;

  GPIO_InitStruct.Pull = GPIO_NOPULL;

  GPIO_InitStruct.Speed = GPIO_SPEED_LOW;

  HAL_GPIO_Init(LD3_GPIO_Port, &GPIO_InitStruct);



}



/* USER CODE BEGIN 4 */



/* USER CODE END 4 */



#ifdef USE_FULL_ASSERT



/**

   * [url=home.php?mod=space&uid=247401]@brief[/url] 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,

    ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

  /* USER CODE END 6 */



}



#endif



/**

  * @}

  */ 



/**

  * @}

*/