蓝桥杯嵌入式第11届真题(完成) STM32G431

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蓝桥杯嵌入式第11届真题(完成) STM32G431

题目

image-20240213224903309

image-20240213224955510

image-20240213225002061

image-20240213225008211

image-20240213225016340

代码

程序和之前的大同小异，不过多解释

main.c

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2021 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "adc.h"
#include "tim.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "key.h"
#include "led.h"
#include "myadc.h"
#include "stdbool.h"
#include "stdio.h"
#include "string.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
extern struct Key key[4];
uint8_t view = 1;
uint8_t lcdtext[30];
float adcVal;
uint8_t model[10] = "AUTO";
uint8_t D1 = 10;
uint8_t D2 = 10;
uint8_t led;
/* 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 */
void key_process(void);
void lcd_process(void);
void led_process(void);
void adc_process(void);
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
void lcdclear(void)
{
	
	LCD_Clear(Black);
	LCD_SetBackColor(Black);
	LCD_SetTextColor(White);
}
/* 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_ADC2_Init();
  MX_TIM3_Init();
  MX_TIM17_Init();
  MX_TIM2_Init();
  /* USER CODE BEGIN 2 */
		
    LCD_Init();
		HAL_TIM_Base_Start_IT(&htim2);
		HAL_TIM_PWM_Start(&htim3,TIM_CHANNEL_1);
		HAL_TIM_PWM_Start(&htim17,TIM_CHANNEL_1);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
		lcdclear();
		led_display(0x00);
		
    while (1)
    {
			adc_process();
			key_process();
			lcd_process();
			led_process();
    /* USER CODE END WHILE */

    /* 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};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};

  /** Configure the main internal regulator output voltage
  */
  HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
  RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV2;
  RCC_OscInitStruct.PLL.PLLN = 20;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;
  RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;
  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_2) != HAL_OK)
  {
    Error_Handler();
  }
  /** Initializes the peripherals clocks
  */
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC12;
  PeriphClkInit.Adc12ClockSelection = RCC_ADC12CLKSOURCE_SYSCLK;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */

void key_process(void)
{
	if(key[0].key_single_flag)
	{
		lcdclear();
		key[0].key_single_flag = 0;
		if(view==1)
		{
			view = 2;
		}else{
			view = 1;
		}
	}
	
	if(key[1].key_single_flag)
	{
		lcdclear();
		key[1].key_single_flag = 0;
		D1 = ((D1 / 10) % 9 + 1) * 10;
	}
	
	if(key[2].key_single_flag)
	{
		lcdclear();
		key[2].key_single_flag = 0;
		D2 = ((D2 / 10) % 9 + 1) * 10;

	}
	if(key[3].key_single_flag)
	{
		lcdclear();
		key[3].key_single_flag = 0;
		if(strcmp((char *)model,"AUTO")==0)
		{
			sprintf((char *)model,"MANU");
		}else{
			sprintf((char *)model,"AUTO");
		}

	}

}	

void lcd_process(void)
{
	switch(view)
	{
		case 1://数据显示界面
		{
			sprintf((char *)lcdtext,"       Data");
			LCD_DisplayStringLine(Line0,lcdtext);
			sprintf((char *)lcdtext,"    V:%.2fV",adcVal);
			LCD_DisplayStringLine(Line2,lcdtext);
			sprintf((char *)lcdtext,"    Mode:%s",model);
			LCD_DisplayStringLine(Line4,lcdtext);
		}break;
		case 2://参数设置界面
		{
			sprintf((char *)lcdtext,"       Para");
			LCD_DisplayStringLine(Line0,lcdtext);
			sprintf((char *)lcdtext,"    PA6:%d %%",D1);
			LCD_DisplayStringLine(Line2,lcdtext);
			sprintf((char *)lcdtext,"    PA7:%d %%",D2);
			LCD_DisplayStringLine(Line4,lcdtext);
		}break;
	}

}
void led_process(void)
{
	if(strcmp((char *)model,"AUTO")==0)
	{
		led|=0x01;
	}else{
		led&=~0x01;
	}
	if(view==1)
	{
		led|=0x02;
	}else{
		led&=~0x02;
	}
	led_display(led);
}
void adc_process(void)
{
	adcVal = get_Adc_Val(&hadc2);
	if(strcmp((char *)model,"AUTO")==0)
	{
		D1 = adcVal*100 /3.3f;
		D2 = D1;
		if(adcVal==0)
		{
			D1 = 0;
			D2 = D1;
		}
		else if(adcVal==3.3)
		{
			D1 = 100;
			D2 = D1;
		}	

	}
	__HAL_TIM_SET_COMPARE(&htim3,TIM_CHANNEL_1,10000*D1);
	__HAL_TIM_SET_COMPARE(&htim17,TIM_CHANNEL_1,10000*D2);
	
	
	
}
/* 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 */

  /* 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,
       tex: printf("Wrong parameters value: file %s on line %drn", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

key.c

#include "key.h"

struct Key key[4]={0,0,0,0};
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
	if(htim->Instance==TIM2)
	{
		key[0].key_gpio = HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_0);
		key[1].key_gpio = HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1);
		key[2].key_gpio = HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_2);
		key[3].key_gpio = HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0);
		for(int i = 0;i<4;i++)
		{
			switch(key[i].key_status)
			{
				case 0:
				{
					if(key[i].key_gpio==0)
					{
						key[i].key_status = 1;
					}
				}break;
				case 1:
				{
					if(key[i].key_gpio==0)
					{
						key[i].key_single_flag = 1;
						key[i].key_status = 2;
					}else{
						key[i].key_status = 0;
					}
				}break;
				case 2:
				{
					if(key[i].key_gpio==1)
					{
						key[i].key_status = 0;
					}
				}break;
			}
		}
	}
}

led.c

#include "led.h"

void led_display(uint8_t led)
{
	HAL_GPIO_WritePin(GPIOC,GPIO_PIN_All,GPIO_PIN_SET);
	HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);
	HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);
	HAL_GPIO_WritePin(GPIOC,led<<8,GPIO_PIN_RESET);
	HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);
	HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);
}

myadc.c

#include "myadc.h"

float get_Adc_Val(ADC_HandleTypeDef *hadc)
{
	float val;
	HAL_ADC_Start(hadc);
	val = HAL_ADC_GetValue(hadc);
	return val*3.3f/4096;
}

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