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 */
/**
* @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 %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;
}