基于STM32F103C8T6使用CUBEMX编写超声波测距源程序

给需要学习CUBEMX编写超声波测距

单片机源程序如下:

1. 
   
2. /* Includes ------------------------------------------------------------------*/
   
3. #include "main.h"
   
4. #include "tim.h"
   
5. #include "usart.h"
   
6. #include "gpio.h"
   
7. 
   
8. /* Private includes ----------------------------------------------------------*/
   
9. /* USER CODE BEGIN Includes */
   
10. #include "stdio.h"
    
11. #define TRIG_ON HAL_GPIO_WritePin(TRIG_GPIO_Port, TRIG_Pin, GPIO_PIN_SET);
    
12. #define TRIG_OFF HAL_GPIO_WritePin(TRIG_GPIO_Port, TRIG_Pin, GPIO_PIN_RESET);
    
13. /* USER CODE END Includes */
    
14. 
    
15. /* Private typedef -----------------------------------------------------------*/
    
16. /* USER CODE BEGIN PTD */
    
17. float S1,S2,distance;
    
18. /* USER CODE END PTD */
    
19. 
    
20. /* Private define ------------------------------------------------------------*/
    
21. /* USER CODE BEGIN PD */
    
22. /* USER CODE END PD */
    
23. 
    
24. /* Private macro -------------------------------------------------------------*/
    
25. /* USER CODE BEGIN PM */
    
26. 
    
27. /* USER CODE END PM */
    
28. 
    
29. /* Private variables ---------------------------------------------------------*/
    
30. 
    
31. /* USER CODE BEGIN PV */
    
32. 
    
33. /* USER CODE END PV */
    
34. 
    
35. /* Private function prototypes -----------------------------------------------*/
    
36. void SystemClock_Config(void);
    
37. /* USER CODE BEGIN PFP */
    
38. 
    
39. /* USER CODE END PFP */
    
40. 
    
41. /* Private user code ---------------------------------------------------------*/
    
42. /* USER CODE BEGIN 0 */
    
43. 
    
44. /* USER CODE END 0 */
    
45. 
    
46. /**
    
47.   * @brief  The application entry point.
    
48.   * @retval int
    
49.   */
    
50. int main(void)
    
51. {
    
52.   /* USER CODE BEGIN 1 */
    
53. 
    
54.   /* USER CODE END 1 */
    
55. 
    
56.   /* MCU Configuration--------------------------------------------------------*/
    
57. 
    
58.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    
59.   HAL_Init();
    
60. 
    
61.   /* USER CODE BEGIN Init */
    
62. 
    
63.   /* USER CODE END Init */
    
64. 
    
65.   /* Configure the system clock */
    
66.   SystemClock_Config();
    
67. 
    
68.   /* USER CODE BEGIN SysInit */
    
69. 
    
70.   /* USER CODE END SysInit */
    
71. 
    
72.   /* Initialize all configured peripherals */
    
73.   MX_GPIO_Init();
    
74.   MX_TIM2_Init();
    
75.   MX_USART1_UART_Init();
    
76.   /* USER CODE BEGIN 2 */
    
77.   HAL_TIM_Base_Start_IT(&htim2);
    
78.   /* USER CODE END 2 */
    
79. 
    
80.   /* Infinite loop */  
    
81.   /* USER CODE BEGIN WHILE */
    
82.   while (1)
    
83.   {   
    
84.                 htim2.Instance ->CNT =0;
    
85.                 TRIG_OFF ;
    
86.                 TRIG_ON ;
    
87.                 HAL_Delay(1);
    
88.                 TRIG_OFF ;
    
89.                 while(HAL_GPIO_ReadPin(ECHO_GPIO_Port,ECHO_Pin)==0);
    
90.                 S1= htim2.Instance ->CNT ;
    
91.                 while(HAL_GPIO_ReadPin(ECHO_GPIO_Port,ECHO_Pin)==1) ;
    
92.                 S2= htim2.Instance ->CNT ;
    
93.                 distance=(S2-S1)*0.034/2;
    
94.                 printf("Distance is : %0.1fmm\r\n",distance);
    
95.                 HAL_Delay(500);
    
96.     /* USER CODE END WHILE */
    
97.    
    
98.     /* USER CODE BEGIN 3 */
    
99.   }
    
100.   /* USER CODE END 3 */
     
101. }
     
102. 
     
103. /**
     
104.   * @brief System Clock Configuration
     
105.   * @retval None
     
106.   */
     
107. void SystemClock_Config(void)
     
108. {
     
109.   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
     
110.   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
     
111. 
     
112.   /** Initializes the RCC Oscillators according to the specified parameters
     
113.   * in the RCC_OscInitTypeDef structure.
     
114.   */
     
115.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
     
116.   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
     
117.   RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
     
118.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
     
119.   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI_DIV2;
     
120.   RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
     
121.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
     
122.   {
     
123.     Error_Handler();
     
124.   }
     
125.   /** Initializes the CPU, AHB and APB buses clocks
     
126.   */
     
127.   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
     
128.                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
     
129.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
     
130.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
     
131.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
     
132.   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
     
133. 
     
134.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
     
135.   {
     
136.     Error_Handler();
     
137.   }
     
138. }
     
139. 
     
140. /* USER CODE BEGIN 4 */
     
141. 
     
142. /* USER CODE END 4 */
     
143. 
     
144. /**
     
145.   * @brief  This function is executed in case of error occurrence.
     
146.   * @retval None
     
147.   */
     
148. void Error_Handler(void)
     
149. {
     
150.   /* USER CODE BEGIN Error_Handler_Debug */
     
151.   /* User can add his own implementation to report the HAL error return state */
     
152.   __disable_irq();
     
153.   while (1)
     
154.   {
     
155.   }
     
156.   /* USER CODE END Error_Handler_Debug */
     
157. }
     
158. 
     
159. #ifdef  USE_FULL_ASSERT
     
160. /**
     
161.   * @brief  Reports the name of the source file and the source line number
     
162.   *         where the assert_param error has occurred.
     
163.   * @param  file: pointer to the source file name
     
164.   * @param  line: assert_param error line source number
     
165.   * @retval None
     
166.   */
     
167. void assert_failed(uint8_t *file, uint32_t line)
     
168. {
     
169.   /* USER CODE BEGIN 6 */
     
170.   /* User can add his own implementation to report the file name and line number,
     
171.      ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
     
172.   /* USER CODE END 6 */
     
173. }
     
174. #endif /* USE_FULL_ASSERT */
     
175. 
     
176. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
     

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2021-7-23 16:16 上传

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