蓝桥杯嵌入式第11届真题(完成) STM32G431

蓝桥杯嵌入式第11届真题(完成) STM32G431

题目

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** 
© Copyright (c) 2021 STMicroelectronics.* All rights reserved.
** 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 *//*** @briefThe 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 *//*** @briefThis 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 */}#ifdefUSE_FULL_ASSERT/*** @briefReports the name of the source file and the source line number* where the assert_param error has occurred.* @paramfile: pointer to the source file name* @paramline: 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 %d\r\n", 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;}