企业网站后台管理系统模板下载,购物网站界面设计,公司网站做二维码网址,哈尔滨建站公司模块介绍#xff1a; 接线#xff1a;
VCC -- 3.3V 不能接5V#xff0c;否则遮挡一次会触发3次中断
OUT -- PB14 测速原理#xff1a; cubeMX设置#xff1a;
PB14设置为gpio中断 打开定时器2#xff0c;时钟来源设置为内部时钟#xff0c;设置溢出时间1s#xff0c…模块介绍 接线
VCC -- 3.3V 不能接5V否则遮挡一次会触发3次中断
OUT -- PB14 测速原理 cubeMX设置
PB14设置为gpio中断 打开定时器2时钟来源设置为内部时钟设置溢出时间1s计算公式为(psc1)*(ARR1)/72M。 打开定时器2中断串口1中断和外部中断线PB14. main.c
#include main.h
#include tim.h
#include usart.h
#include gpio.h/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include motor.h
#include stdio.h
/* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD *//* USER CODE END PTD *//* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD *//* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM *//* USER CODE END PM *//* Private variables ---------------------------------------------------------*//* USER CODE BEGIN PV */
extern uint8_t buf;
/* USER CODE END PV *//* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP *//* USER CODE END PFP *//* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
unsigned int speedCnt 0;void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) //GPIO口中断(外部中断)下降沿触发
{if(GPIO_Pin GPIO_PIN_14 ) if(HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_14) GPIO_PIN_RESET) {speedCnt; }
}void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim) //定时器中断服务函数1s
{printf(speed:%d \r\n,speedCnt);speedCnt0;
}
/* USER CODE END 0 *//*** brief The application entry point.* retval int*/
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();/* USER CODE BEGIN Init *//* USER CODE END Init *//* Configure the system clock */SystemClock_Config();/* USER CODE BEGIN SysInit *//* USER CODE END SysInit *//* Initialize all configured peripherals */MX_GPIO_Init();MX_USART1_UART_Init();MX_TIM2_Init();/* USER CODE BEGIN 2 */HAL_UART_Receive_IT(huart1, buf, 1);HAL_TIM_Base_Start_IT(htim2); //开启定时器中断/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE *//* USER CODE BEGIN 3 */}/* USER CODE END 3 */
}
