hal库练习1-优快云博客

本文链接：https://blog.youkuaiyun.com/Camellia0311/article/details/148665087

要求：一个按键实现呼吸灯的控制，一个按键控制LED灯的闪烁，串口发送数据控制灯的开关

定时器配置

1.选择需要的定时器2.配置基础参数（根据时钟树给定时器输入的时钟）3.打开中断4.在主函数里打开中断

定时器扫描按键

呼吸灯（使用TIM2的Channel2的PWM脉冲生成）

1.在定时器配置相应通道2.在GPIO中配置相应引脚为复用推挽输出

呼吸灯（不使用PWM脉冲生成）

1.0

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* 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 */

/* 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 */
uint16_t mode1=0,mode2=0;//0表示关闭，mode1为闪烁，mode2为呼吸灯
uint16_t value=0,dir=1;//value表示当前PWM值，dir表示方向，1为暗变亮，0为亮变暗
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
	if(htim->Instance==TIM3)//TIM3控制闪烁
	{
		if(mode1==1)
		{
			HAL_GPIO_TogglePin(GPIOA,GPIO_PIN_0);
		}
		else
		{
			HAL_GPIO_WritePin(GPIOA,GPIO_PIN_0,GPIO_PIN_SET);
		}
	}
	if(htim->Instance==TIM2)//TIM2控制呼吸灯
	{
		 if( mode2 == 1)  
    {
      if(dir)
      {
        value++;
        if(value >= 99) 
					dir = 0;
      }
      else
      {
        value--;
        if(value <= 0)
					dir = 1;
      }
      __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_2, value);
    }
		else
		{
			value = 0;  
      __HAL_TIM_SET_COMPARE(&htim2, TIM_CHANNEL_2, 100); 
		}
	
	}
	
}



#define KEY0 HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_6) 
#define KEY1 HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1)
void Scan_Keys()
{
  if(KEY0==GPIO_PIN_RESET)
  {
    HAL_Delay(10);
    if(KEY0==GPIO_PIN_RESET)
    {
      while(KEY0==GPIO_PIN_RESET);
      mode2=!mode2;
 
    }
 
  }
  if(KEY1==GPIO_PIN_RESET)
  {
    HAL_Delay(10);
    if(KEY1==GPIO_PIN_RESET)
    {
      while(KEY1==GPIO_PIN_RESET);
      mode1=!mode1;
 
    }
 
  }
}

uint8_t Tx_str1[]="LED1 Open!\r\n";
uint8_t Tx_str2[]="LED1 Closed!\r\n";
uint8_t Tx_str3[]="LED2 Open!\r\n";
uint8_t Tx_str4[]="LED2 Closed!\r\n";
uint8_t Rx_data=0;
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
	if(huart->Instance==USART1)
	{
		if(Rx_data==0xa1)
		{

			HAL_UART_Transmit(&huart1,Tx_str1,sizeof(Tx_str1),10000);
			mode1=1;
			HAL_UART_Receive_IT(&huart1,&Rx_data,1);
 
		}
		else if(Rx_data==0xa2)
		{
			HAL_UART_Transmit(&huart1,Tx_str2,sizeof(Tx_str2),10000);	
			mode1=0;
			HAL_UART_Receive_IT(&huart1,&Rx_data,1);
		}
		else if(Rx_data==0xa3)
		{
			HAL_UART_Transmit(&huart1,Tx_str3,sizeof(Tx_str3),10000);	
			mode2=1;
			HAL_UART_Receive_IT(&huart1,&Rx_data,1);
		}
		else if(Rx_data==0xa4)
		{
			HAL_UART_Transmit(&huart1,Tx_str4,sizeof(Tx_str4),10000);	
			mode2=0;
			HAL_UART_Receive_IT(&huart1,&Rx_data,1);
		}
	}
 
}

/**
  * @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_TIM2_Init();
  MX_TIM3_Init();
  MX_USART1_UART_Init();
  /* USER CODE BEGIN 2 */
	//初始设置为关闭
	HAL_GPIO_WritePin(GPIOA,GPIO_PIN_0,GPIO_PIN_SET);
	HAL_GPIO_WritePin(GPIOA,GPIO_PIN_1,GPIO_PIN_SET);
	//开启定时中断
	HAL_TIM_Base_Start_IT(&htim2);
  HAL_TIM_Base_Start_IT(&htim3);
	//开启串口接收中断
	HAL_UART_Receive_IT(&huart1,&Rx_data,1);
	//开启PWM
	HAL_TIM_PWM_Start(&htim2, TIM_CHANNEL_2);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
		//扫描按键
		Scan_Keys();
    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL2;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }

  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  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();
  }
}

/* USER CODE BEGIN 4 */

/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#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 /* USE_FULL_ASSERT */