STM32F103驱动超声波程序（HAL库版）TM1640显示

又是很无聊，弄了个超声波出来，主要运用定时器TIM2_CH1捕获，TM1640显示

超声波：TRIG:PA1   ECHO:PA0
TM1640:SCLK:PA11  SDIO:PA12
单位：厘米

制作出来的实物图如下：


单片机源程序如下:

1. 
   
2. /* Includes ------------------------------------------------------------------*/
   
3. #include "main.h"
   
4. #include "tim.h"
   
5. #include "gpio.h"
   
6. #include "tm1640.h"
   
7. /* Private includes ----------------------------------------------------------*/
   
8. /* USER CODE BEGIN Includes */
   
9. 
   
10. /* USER CODE END Includes */
    
11. 
    
12. /* Private typedef -----------------------------------------------------------*/
    
13. /* USER CODE BEGIN PTD */
    
14. 
    
15. /* USER CODE END PTD */
    
16. 
    
17. /* Private define ------------------------------------------------------------*/
    
18. /* USER CODE BEGIN PD */
    
19. /* USER CODE END PD */
    
20. 
    
21. /* Private macro -------------------------------------------------------------*/
    
22. /* USER CODE BEGIN PM */
    
23. 
    
24. /* USER CODE END PM */
    
25. 
    
26. /* Private variables ---------------------------------------------------------*/
    
27. 
    
28. /* USER CODE BEGIN PV */
    
29. 
    
30. /* USER CODE END PV */
    
31. 
    
32. /* Private function prototypes -----------------------------------------------*/
    
33. void SystemClock_Config(void);
    
34. /* USER CODE BEGIN PFP */
    
35. 
    
36. /* USER CODE END PFP */
    
37. 
    
38. /* Private user code ---------------------------------------------------------*/
    
39. /* USER CODE BEGIN 0 */
    
40. uint32_t capture_Buf[3] = {0};   //存放计数值
    
41. uint8_t capture_Cnt = 0;    //状态标志位
    
42. uint32_t high_time;   //高电平时间
    
43. /* USER CODE END 0 */
    
44. 
    
45. /**
    
46.   * @brief  The application entry point.
    
47.   * @retval int
    
48.   */
    
49. int main(void)
    
50. {
    
51.   /* USER CODE BEGIN 1 */
    
52.         uint8_t i;
    
53.   /* USER CODE END 1 */
    
54. 
    
55.   /* MCU Configuration--------------------------------------------------------*/
    
56. 
    
57.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    
58.   HAL_Init();
    
59. 
    
60.   /* USER CODE BEGIN Init */
    
61. 
    
62.   /* USER CODE END Init */
    
63. 
    
64.   /* Configure the system clock */
    
65.   SystemClock_Config();
    
66. 
    
67.   /* USER CODE BEGIN SysInit */
    
68. 
    
69.   /* USER CODE END SysInit */
    
70. 
    
71.   /* Initialize all configured peripherals */
    
72.   MX_GPIO_Init();
    
73.   MX_TIM2_Init();
    
74.   /* USER CODE BEGIN 2 */
    
75.         TM1640_Init();
    
76.   /* USER CODE END 2 */
    
77. 
    
78.   /* Infinite loop */
    
79.   /* USER CODE BEGIN WHILE */
    
80.   while (1)
    
81.   {
    
82.     /* USER CODE END WHILE */
    
83. switch (capture_Cnt){
    
84.                 case 0:
    
85.                 capture_Cnt++;
    
86.                 i=200;
    
87.                 HAL_GPIO_WritePin(TRIG_GPIO_Port,TRIG_Pin,GPIO_PIN_SET);
    
88.                 while(i--);
    
89.                 HAL_GPIO_WritePin(TRIG_GPIO_Port,TRIG_Pin,GPIO_PIN_RESET);
    
90.                 __HAL_TIM_SET_CAPTUREPOLARITY(&htim2, TIM_CHANNEL_1, TIM_INPUTCHANNELPOLARITY_RISING);
    
91.                 HAL_TIM_IC_Start_IT(&htim2, TIM_CHANNEL_1);        //启动输入捕获       或者: __HAL_TIM_ENABLE(&htim5);
    
92. 
    
93.                 break;
    
94.                 case 3:
    
95.                 high_time = capture_Buf[1]- capture_Buf[0];    //高电平时间
    
96.                 //HAL_UART_Transmit(&huart1, (uint8_t *)high_time, 1, 0xffff);   //发送高电平时间
    
97.                 high_time*=17;
    
98.                 TM1640_display(0,high_time%1000000/100000);
    
99.                 TM1640_display(1,high_time%100000/10000);
    
100.                 TM1640_display(2,high_time%10000/1000+10);
     
101.                 TM1640_display(3,high_time%1000/100);
     
102.                 TM1640_display(4,high_time%100/10);
     
103.                 TM1640_display(5,high_time%10);
     
104.                 HAL_Delay(400);   //延时1S
     
105.                 capture_Cnt = 0;  //清空标志位
     
106.                 break;
     
107. 
     
108.     /* USER CODE BEGIN 3 */
     
109.   }
     
110.   /* USER CODE END 3 */
     
111. }
     
112. }
     
113. /**
     
114.   * @brief System Clock Configuration
     
115.   * @retval None
     
116.   */
     
117. void SystemClock_Config(void)
     
118. {
     
119.   RCC_OscInitTypeDef RCC_OscInitStruct = {0};
     
120.   RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
     
121. 
     
122.   /** Initializes the RCC Oscillators according to the specified parameters
     
123.   * in the RCC_OscInitTypeDef structure.
     
124.   */
     
125.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
     
126.   RCC_OscInitStruct.HSEState = RCC_HSE_ON;
     
127.   RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
     
128.   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
     
129.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
     
130.   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
     
131.   RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
     
132.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
     
133.   {
     
134.     Error_Handler();
     
135.   }
     
136.   /** Initializes the CPU, AHB and APB buses clocks
     
137.   */
     
138.   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
     
139.                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
     
140.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
     
141.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
     
142.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
     
143.   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
     
144. 
     
145.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
     
146.   {
     
147.     Error_Handler();
     
148.   }
     
149.   /** Enables the Clock Security System
     
150.   */
     
151.   HAL_RCC_EnableCSS();
     
152. }
     
153. 
     
154. /* USER CODE BEGIN 4 */
     
155. 
     
156. /* USER CODE END 4 */
     
157. 
     
158. /**
     
159.   * @brief  This function is executed in case of error occurrence.
     
160.   * @retval None
     
161.   */
     
162. void Error_Handler(void)
     
163. {
     
164.   /* USER CODE BEGIN Error_Handler_Debug */
     
165.   /* User can add his own implementation to report the HAL error return state */
     
166.   __disable_irq();
     
167.   while (1)
     
168.   {
     
169.   }
     
170.   /* USER CODE END Error_Handler_Debug */
     
171. }
     
172. 
     
173. #ifdef  USE_FULL_ASSERT
     
174. /**
     
175.   * @brief  Reports the name of the source file and the source line number
     
176.   *         where the assert_param error has occurred.
     
177.   * @param  file: pointer to the source file name
     
178.   * @param  line: assert_param error line source number
     
179.   * @retval None
     
180.   */
     
181. void assert_failed(uint8_t *file, uint32_t line)
     
182. {
     
183.   /* USER CODE BEGIN 6 */
     
184.   /* User can add his own implementation to report the file name and line number,
     
185.      ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
     
186.   /* USER CODE END 6 */
     
187. }
     
188. #endif /* USE_FULL_ASSERT */
     
189. 
     
190. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
     
191. void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim)
     
192. {
     
193.        
     
194.         if(TIM2 == htim->Instance)
     
195.         {
     
196.                                 switch(capture_Cnt){
     
197.                                 case 1:
     
198.                                 capture_Buf[0] = HAL_TIM_ReadCapturedValue(&htim2,TIM_CHANNEL_1);//获取当前的捕获值.
     
199.                                 __HAL_TIM_SET_CAPTUREPOLARITY(&htim2,TIM_CHANNEL_1,TIM_ICPOLARITY_FALLING);  //设置为下降沿捕获
     
200.                                 capture_Cnt++;
     
201.                                 break;
     
202.                                 case 2:
     
203.                                 capture_Buf[1] = HAL_TIM_ReadCapturedValue(&htim2,TIM_CHANNEL_1);//获取当前的捕获值.
     
204.                                 HAL_TIM_IC_Stop_IT(&htim2,TIM_CHANNEL_1); //停止捕获   或者: __HAL_TIM_DISABLE(&htim5);
     
205.                                 capture_Cnt++;   
     
206.                 }
     
207.        
     
208.         }
     
209.        
     
210. }
     

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