对射式红外传感器计数复现

配置工程

我们直接复制oled的工程，但是要重命名。

将PB14设置为中断引脚

自定义命名为sensorcount

 设置为上升沿触发

打开中断

配置NVCI

都为默认就可以了

修改代码

修改stm32f1xx_it.c 文件

找到中断函数并修改

void EXTI15_10_IRQHandler(void)
{/* USER CODE BEGIN EXTI15_10_IRQn 0 */if(__HAL_GPIO_EXTI_CLEAR_FLAG(sensorcount_Pin)){/* USER CODE END EXTI15_10_IRQn 0 */HAL_GPIO_EXTI_IRQHandler(sensorcount_Pin);/* USER CODE BEGIN EXTI15_10_IRQn 1 */count+=1;}/* USER CODE END EXTI15_10_IRQn 1 */}

定义一个count用于计数

添加计数函数

/* USER CODE BEGIN 1 */
uint16_t get_sensorcounter(void)
{return count;
}
/* USER CODE END 1 */

修改main函数文件

找到void main并修改

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();/* USER CODE BEGIN 2 */OLED_Init();OLED_Clear();/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){OLED_ShowNum(1, 1, get_sensorcounter(), 5);/* USER CODE END WHILE *//* USER CODE BEGIN 3 */}/* USER CODE END 3 */
}/*** @brief System Clock Configuration* @retval None*/