1.  
2. /**
3.   ******************************************************************************
4.   * @file           : main.c
5.   * @brief          : Main program body
6.   ******************************************************************************
7.   ** This notice applies to any and all portions of this file
8.   * that are not between comment pairs USER CODE BEGIN and
9.   * USER CODE END. Other portions of this file, whether
10.   * inserted by the user or by software development tools
11.   * are owned by their respective copyright owners.
12.   *
13.   * COPYRIGHT(c) 2019 STMicroelectronics
14.   *
15.   * Redistribution and use in source and binary forms, with or without modification,
16.   * are permitted provided that the following conditions are met:
17.   *   1. Redistributions of source code must retain the above copyright notice,
18.   *      this list of conditions and the following disclaimer.
19.   *   2. Redistributions in binary form must reproduce the above copyright notice,
20.   *      this list of conditions and the following disclaimer in the documentation
21.   *      and/or other materials provided with the distribution.
22.   *   3. Neither the name of STMicroelectronics nor the names of its contributors
23.   *      may be used to endorse or promote products derived from this software
24.   *      without specific prior written permission.
25.   *
26.   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
27.   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28.   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
29.   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
30.   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31.   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
32.   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
33.   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
34.   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
35.   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36.   *
37.   ******************************************************************************
38.   */
39. /* Includes ------------------------------------------------------------------*/
40. #include "main.h"
41. #include "stm32f3xx_hal.h"
42. #include "tim.h"
43. #include "gpio.h"
44.  
45. /* USER CODE BEGIN Includes */
46.  
47. /* USER CODE END Includes */
48.  
49. /* Private variables ---------------------------------------------------------*/
50.  
51. /* USER CODE BEGIN PV */
52. /* Private variables ---------------------------------------------------------*/
53.  
54. /* USER CODE END PV */
55.  
56. /* Private function prototypes -----------------------------------------------*/
57. void SystemClock_Config(void);
58.  
59. /* USER CODE BEGIN PFP */
60. /* Private function prototypes -----------------------------------------------*/
61.  
62. /* USER CODE END PFP */
63.  
64. /* USER CODE BEGIN 0 */
65.  
66. /* USER CODE END 0 */
67.  
68. /**
69.   * @brief  The application entry point.
70.   *
71.   * @retval None
72.   */
73. int main(void)
74. {
75.   /* USER CODE BEGIN 1 */
76.  
77.   /* USER CODE END 1 */
78.  
79.   /* MCU Configuration----------------------------------------------------------*/
80.  
81.   /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
82.   HAL_Init();
83.  
84.   /* USER CODE BEGIN Init */
85.  
86.   /* USER CODE END Init */
87.  
88.   /* Configure the system clock */
89.   SystemClock_Config();
90.  
91.   /* USER CODE BEGIN SysInit */
92.  
93.   /* USER CODE END SysInit */
94.  
95.   /* Initialize all configured peripherals */
96.   MX_GPIO_Init();
97.   MX_TIM2_Init();
98.   /* USER CODE BEGIN 2 */
99.         HAL_TIM_Base_Start(&htim2);
100.         HAL_TIM_IC_Start_IT(&htim2, TIM_CHANNEL_3);
101.   HAL_TIM_OC_Start_IT(&htim2, TIM_CHANNEL_1);
102.         /* USER CODE END 2 */
103.  
104.   /* Infinite loop */
105.   /* USER CODE BEGIN WHILE */
106.   while (1)
107.   {
108.  
109.   /* USER CODE END WHILE */
110.  
111.   /* USER CODE BEGIN 3 */
112.  
113.   }
114.   /* USER CODE END 3 */
115.  
116. }
117.  
118. /**
119.   * @brief System Clock Configuration
120.   * @retval None
121.   */
122. void SystemClock_Config(void)
123. {
124.  
125.   RCC_OscInitTypeDef RCC_OscInitStruct;
126.   RCC_ClkInitTypeDef RCC_ClkInitStruct;
127.  
128.     /**Initializes the CPU, AHB and APB busses clocks
129.     */
130.   RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
131.   RCC_OscInitStruct.HSIState = RCC_HSI_ON;
132.   RCC_OscInitStruct.HSICalibrationValue = 16;
133.   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
134.   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
135.   RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL12;
136.   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
137.   {
138.     _Error_Handler(__FILE__, __LINE__);
139.   }
140.  
141.     /**Initializes the CPU, AHB and APB busses clocks
142.     */
143.   RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
144.                               |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
145.   RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
146.   RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
147.   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
148.   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
149.  
150.   if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_1) != HAL_OK)
151.   {
152.     _Error_Handler(__FILE__, __LINE__);
153.   }
154.  
155.     /**Configure the Systick interrupt time
156.     */
157.   HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
158.  
159.     /**Configure the Systick
160.     */
161.   HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
162.  
163.   /* SysTick_IRQn interrupt configuration */
164.   HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
165. }
166.  
167. /* USER CODE BEGIN 4 */
168. unsigned int period, lastTime;
169. void HAL_TIM_IC_CaptureCallback(TIM_HandleTypeDef *htim){
170.        
171.         unsigned int time;
172.         time =  HAL_TIM_ReadCapturedValue(&htim2, TIM_CHANNEL_3);
173.   period = time-lastTime;
174.         lastTime = time;
175.         TIM2->CCR2=time+100;
176. }
177.        
178. void HAL_TIM_OC_DelayElapsedCallback(TIM_HandleTypeDef *htim){
179.  
180.        
181. }
182.        
183. /* USER CODE END 4 */
184.  
185. /**
186.   * @brief  This function is executed in case of error occurrence.
187.   * @param  file: The file name as string.
188.   * @param  line: The line in file as a number.
189.   * @retval None
190.   */
191. void _Error_Handler(char *file, int line)
192. {
193.   /* USER CODE BEGIN Error_Handler_Debug */
194.   /* User can add his own implementation to report the HAL error return state */
195.   while(1)
196.   {
197.   }
198.   /* USER CODE END Error_Handler_Debug */
199. }
200.  
201. #ifdef  USE_FULL_ASSERT
202. /**
203.   * @brief  Reports the name of the source file and the source line number
204.   *         where the assert_param error has occurred.
205.   * @param  file: pointer to the source file name
206.   * @param  line: assert_param error line source number
207.   * @retval None
208.   */
209. void assert_failed(uint8_t* file, uint32_t line)
210. {
211.   /* USER CODE BEGIN 6 */
212.   /* User can add his own implementation to report the file name and line number,
213.      tex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
214.   /* USER CODE END 6 */
215. }
216. #endif /* USE_FULL_ASSERT */
217.  
218. /**
219.   * @}
220.   */
221.  
222. /**
223.   * @}
224.   */
225.  
226. /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
227.