實現功能為按1亮一個燈,按2兩2個燈,以此類推,抬手熄滅。
單片機源程序如下:
- #include "main.h"
- #include "stm32f1xx_hal.h"
- #include "gpio.h"
- /* USER CODE BEGIN Includes */
- #define KEY1_PRES 1
- #define KEY2_PRES 2
- #define KEY3_PRES 3
- #define KEY4_PRES 4
- #define KEY1 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_3)
- #define KEY2 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_4)
- #define KEY3 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_5)
- #define KEY4 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_6)
- /* USER CODE END Includes */
- /* Private variables ---------------------------------------------------------*/
- /* USER CODE BEGIN PV */
- /* Private variables ---------------------------------------------------------*/
- /* USER CODE END PV */
- /* Private function prototypes -----------------------------------------------*/
- void SystemClock_Config(void);
- void Error_Handler(void);
- /* USER CODE BEGIN PFP */
- /* Private function prototypes -----------------------------------------------*/
- uint8_t KEY_Scan(uint8_t mode);
- /* USER CODE END PFP */
- /* USER CODE BEGIN 0 */
- /* USER CODE END 0 */
- int main(void)
- {
- /* USER CODE BEGIN 1 */
-
-
- uint8_t i;
- /* USER CODE END 1 */
- /* MCU Configuration----------------------------------------------------------*/
- /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
- HAL_Init();
- /* Configure the system clock */
- SystemClock_Config();
- /* Initialize all configured peripherals */
- MX_GPIO_Init();
- /* USER CODE BEGIN 2 */
- /* USER CODE END 2 */
- /* Infinite loop */
- /* USER CODE BEGIN WHILE */
- while (1)
- {
- /* USER CODE END WHILE */
- /* USER CODE BEGIN 3 */
- /* 按1亮一個燈,按二亮兩個燈,抬手熄滅 */
-
- i=KEY_Scan(1);
-
- switch(i)
- {
- case 0:
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_1,GPIO_PIN_SET);
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_2,GPIO_PIN_SET);
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_3,GPIO_PIN_SET);
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_4,GPIO_PIN_SET);
- //HAL_Delay(500);
- break;
-
- case 1:
-
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_1,GPIO_PIN_RESET);
- //HAL_Delay(500);
- break;
- case 2:
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_1,GPIO_PIN_RESET);
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_2,GPIO_PIN_RESET);
- //HAL_Delay(500);
- break;
- case 3:
-
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_1,GPIO_PIN_RESET);
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_2,GPIO_PIN_RESET);
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_3,GPIO_PIN_RESET);
- //HAL_Delay(500);
- break;
- case 4:
-
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_1,GPIO_PIN_RESET);
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_2,GPIO_PIN_RESET);
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_3,GPIO_PIN_RESET);
- HAL_GPIO_WritePin(GPIOA,GPIO_PIN_4,GPIO_PIN_RESET);
- //HAL_Delay(500);
- break;
-
- default:HAL_Delay(10);
- }
-
-
- }
- /* USER CODE END 3 */
- }
- /** System Clock Configuration
- */
- void SystemClock_Config(void)
- {
- RCC_OscInitTypeDef RCC_OscInitStruct;
- RCC_ClkInitTypeDef RCC_ClkInitStruct;
- /**Initializes the CPU, AHB and APB busses clocks
- */
- RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
- RCC_OscInitStruct.HSIState = RCC_HSI_ON;
- RCC_OscInitStruct.HSICalibrationValue = 16;
- RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
- if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
- {
- Error_Handler();
- }
- /**Initializes the CPU, AHB and APB busses clocks
- */
- RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
- |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
- RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
- RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
- RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
- RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
- if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
- {
- Error_Handler();
- }
- /**Configure the Systick interrupt time
- */
- HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
- /**Configure the Systick
- */
- HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
- /* SysTick_IRQn interrupt configuration */
- HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
- }
- /* USER CODE BEGIN 4 */
- uint8_t KEY_Scan(uint8_t mode)
- {
- static uint8_t key_up=1; //按鍵松開標志
- if(mode) key_up=1; //支持連按
- if(key_up&&(KEY1==1||KEY2==1||KEY3==1||KEY4==1))
- {
- HAL_Delay(10); //去抖動
- key_up=0;
- if(KEY1==1)return KEY1_PRES;
- else if(KEY2==1)return KEY2_PRES;
- else if(KEY3==1)return KEY3_PRES;
- else if(KEY4==1)return KEY4_PRES;
-
- }else if(KEY1==0&&KEY2==0&&KEY3==0&&KEY4==0)key_up=1;
- return 0;// 無按鍵按下
- }
- /* USER CODE END 4 */
- /**
- * @brief This function is executed in case of error occurrence.
- * @param None
- * @retval None
- */
- void Error_Handler(void)
- {
- /* USER CODE BEGIN Error_Handler */
- /* User can add his own implementation to report the HAL error return state */
- while(1)
- {
- }
- /* USER CODE END Error_Handler */
- }
- #ifdef USE_FULL_ASSERT
- /**
- * @brief Reports the name of the source file and the source line number
- * where the assert_param error has occurred.
- * @param file: pointer to the source file name
- * @param line: assert_param error line source number
- * @retval None
- */
- void assert_failed(uint8_t* file, uint32_t line)
- {
- /* USER CODE BEGIN 6 */
- /* User can add his own implementation to report the file name and line number,
- ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
- /* USER CODE END 6 */
- }
- #endif
- /**
- * @}
- */
- /**
- * @}
- */
- /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
復制代碼
所有資料51hei提供下載:
KEY.rar
(3.11 MB, 下載次數: 36)
2018-10-20 18:26 上傳
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