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抛弃Timer定时器的STM32的呼吸灯程序

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ID:544243 发表于 2019-5-21 22:07 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
抛弃Timer定时器，用延时时间来控制呼吸灯的闪烁时间

单片机源程序如下:
  1. /* USER CODE BEGIN Header */
  2. /**
  3.   ******************************************************************************
  4.   * @file           : main.c
  5.   * @brief          : Main program body
  6.   ******************************************************************************
  7.   * @attention
  8.   *
  9.   * <h2><center>© Copyright (c) 2019 STMicroelectronics.
  10.   * All rights reserved.</center></h2>
  11.   *
  12.   * This software component is licensed by ST under BSD 3-Clause license,
  13.   * the "License"; You may not use this file except in compliance with the
  14.   * License. You may obtain a copy of the License at:
  15.   *                        opensource.org/licenses/BSD-3-Clause
  16.   *
  17.   ******************************************************************************
  18.   */
  19. /* USER CODE END Header */

  21. /* Includes ------------------------------------------------------------------*/
  22. #include "main.h"
  23. #include "gpio.h"

  25. /* Private includes ----------------------------------------------------------*/
  26. /* USER CODE BEGIN Includes */

  28. /* USER CODE END Includes */

  30. /* Private typedef -----------------------------------------------------------*/
  31. /* USER CODE BEGIN PTD */

  33. /* USER CODE END PTD */

  35. /* Private define ------------------------------------------------------------*/
  36. /* USER CODE BEGIN PD */

  38. /* USER CODE END PD */

  40. /* Private macro -------------------------------------------------------------*/
  41. /* USER CODE BEGIN PM */

  43. /* USER CODE END PM */

  45. /* Private variables ---------------------------------------------------------*/

  47. /* USER CODE BEGIN PV */

  49. /* USER CODE END PV */

  51. /* Private function prototypes -----------------------------------------------*/
  52. void SystemClock_Config(void);
  53. /* USER CODE BEGIN PFP */

  55. /* USER CODE END PFP */

  57. /* Private user code ---------------------------------------------------------*/
  58. /* USER CODE BEGIN 0 */

  60. void delay0(unsigned int n)
  61. {
  62.         unsigned int x;
  63.         while(n--)
  64.         {
  65.                 x = 50;
  66.                 while(x--);
  67.                 }
  68. }

  70. void twinkle_once(unsigned char darktime)
  71. {
  72.         HAL_GPIO_WritePin(GPIOA,GPIO_PIN_5,GPIO_PIN_RESET);
  73.         delay0(100-darktime);
  74.         HAL_GPIO_WritePin(GPIOA,GPIO_PIN_5,GPIO_PIN_SET);
  75.         delay0(darktime);
  76. }
  77.        
  78. /* USER CODE END 0 */

  80. /**
  81.   * @brief  The application entry point.
  82.   * @retval int
  83.   */
  84. int main(void)
  85. {
  86.   /* USER CODE BEGIN 1 */

  88.   /* USER CODE END 1 */

  90.   /* MCU Configuration--------------------------------------------------------*/

  92.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  93.   HAL_Init();

  95.   /* USER CODE BEGIN Init */

  97.   /* USER CODE END Init */

  99.   /* Configure the system clock */
  100.   SystemClock_Config();

  102.   /* USER CODE BEGIN SysInit */

  104.   /* USER CODE END SysInit */

  106.   /* Initialize all configured peripherals */
  107.   MX_GPIO_Init();
  108.   /* USER CODE BEGIN 2 */

  110.   /* USER CODE END 2 */

  112.   /* Infinite loop */
  113.   /* USER CODE BEGIN WHILE */
  114.         //int x = 0;
  115.         char darktime = 0,dir = 1;
  116.         unsigned int cnt = 0;
  117.   while (1)
  118.   {
  119.                 cnt ++;
  120.                 twinkle_once(darktime);
  121.                 if(cnt == 4)
  122.                 {
  123.                         cnt = 0;
  124.                         if(dir)
  125.                                 darktime += 1;
  126.                         else
  127.                                 darktime -= 1;
  128.                        
  129.                         if(darktime >= 100)
  130.                                 dir = 1;
  131.                         else
  132.                                 dir = 0;
  133.                 }
  134.                 /*x = HAL_GPIO_ReadPin(BUTTON_GPIO_Port,BUTTON_Pin);
  135.                 if(x == 0)
  136.                         HAL_GPIO_WritePin(GPIOA,GPIO_PIN_5,GPIO_PIN_SET);
  137.                 else
  138.                         HAL_GPIO_WritePin(GPIOA,GPIO_PIN_5,GPIO_PIN_RESET);*/
  139.     /* USER CODE END WHILE */

  141.     /* USER CODE BEGIN 3 */
  142.   }
  143.   /* USER CODE END 3 */
  144. }

  146. /**
  147.   * @brief System Clock Configuration
  148.   * @retval None
  149.   */
  150. void SystemClock_Config(void)
  151. {
  152.   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  153.   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  155.   /** Initializes the CPU, AHB and APB busses clocks
  156.   */
  157.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  158.   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  159.   RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  160.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  161.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  162.   {
  163.     Error_Handler();
  164.   }
  165.   /** Initializes the CPU, AHB and APB busses clocks
  166.   */
  167.   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
  168.                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  169.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
  170.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  171.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  172.   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  174.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  175.   {
  176.     Error_Handler();
  177.   }
  178. }

  180. /* USER CODE BEGIN 4 */

  182. /* USER CODE END 4 */

  184. /**
  185.   * @brief  This function is executed in case of error occurrence.
  186.   * @retval None
  187.   */
  188. void Error_Handler(void)
  189. {
  190.   /* USER CODE BEGIN Error_Handler_Debug */
  191.   /* User can add his own implementation to report the HAL error return state */

  193.   /* USER CODE END Error_Handler_Debug */
  194. }

  196. #ifdef  USE_FULL_ASSERT
  197. /**
  198.   * @brief  Reports the name of the source file and the source line number
  199.   *         where the assert_param error has occurred.
  200.   * @param  file: pointer to the source file name
  201.   * @param  line: assert_param error line source number
  202.   * @retval None
  203.   */
  204. void assert_failed(uint8_t *file, uint32_t line)
  205. {
  206.   /* USER CODE BEGIN 6 */
  207.   /* User can add his own implementation to report the file name and line number,
  208.      tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  209.   /* USER CODE END 6 */
  210. }
  211. #endif /* USE_FULL_ASSERT */

  213. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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