本文主要是介绍蓝桥杯嵌入式2015年第六届省赛主观题解析，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
1 题目
2 解析
/* USER CODE BEGIN Header */
/********************************************************************************* @file : main.c* @brief : Main program body******************************************************************************* @attention** Copyright (c) 2024 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 "adc.h"
#include "dma.h"
#include "rtc.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "lcd.h"
#include "stdio.h"
#include "string.h"
#include "i2c_hal.h"
/* USER CODE END Includes *//* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
RTC_TimeTypeDef sTime;//直接从rtc.c中复制
RTC_DateTypeDef sDate;
char buf[20],buf1[20],buf2[20];//给LCD打印的每行内容存到一个buf里
int hour,min,second;//从串口接收到的上报电压的时间
double k=0.1;
double val;//测得的电位器电压
struct keys{int step;int state;
}key[4];//按键
int cnt1,cnt2,cnt3,cnt4;记录每个按键按下的次数
int num=1;//LCD展示的页序号
/* 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 LED_Close()//初始时把所有LED熄灭
{HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_10|GPIO_PIN_11|GPIO_PIN_12|GPIO_PIN_13|GPIO_PIN_14|GPIO_PIN_15,GPIO_PIN_SET);HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);
}
uint8_t EEPROM_Read(uint8_t addr)//EEPROM读写函数（固定模板）
{I2CStart();I2CSendByte(0xa0);I2CWaitAck();I2CSendByte(addr);I2CWaitAck();I2CStart();I2CSendByte(0xa1);I2CWaitAck();uint8_t val=I2CReceiveByte();I2CWaitAck();I2CStop();return val;
}
void EEPROM_Write(uint8_t addr,uint8_t info)
{I2CStart();I2CSendByte(0xa0);I2CWaitAck();I2CSendByte(addr);I2CWaitAck();I2CSendByte(info);I2CWaitAck();I2CStop();
}
double getADC()//测量电位器电压
{HAL_ADC_Start(&hadc2);val=HAL_ADC_GetValue(&hadc2)*3.3/4096;return val;
}
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{if(htim->Instance==TIM8)//给RTC设定一个1s的回调函数，隔一秒打印一次（这里也可以用闹钟中断）{HAL_RTC_GetTime(&hrtc,&sTime,RTC_FORMAT_BIN);//先获取时间，再获取日期HAL_RTC_GetDate(&hrtc,&sDate,RTC_FORMAT_BIN);getADC();//测量电压需要时间，先测量出电压if(num==1){LCD_ClearLine(Line2);LCD_ClearLine(Line6);LCD_DisplayStringLine(Line6,(uint8_t*)buf2);sprintf(buf," T:%02d-%02d-%02d",sTime.Hours,sTime.Minutes,sTime.Seconds);LCD_ClearLine(Line7);LCD_DisplayStringLine(Line7,(uint8_t*)buf);//打印RTC时间sprintf(buf," V1:%.2lfV",val);LCD_ClearLine(Line4);LCD_DisplayStringLine(Line4,(uint8_t*)buf);//打印电压值sprintf(buf," k:%.1lf",k);LCD_ClearLine(Line5);LCD_DisplayStringLine(Line5,(uint8_t*)buf);//打印k值}if(hour==sTime.Hours&&min==sTime.Minutes&&second==sTime.Seconds)//如果RTC时间和设定上报电压时间相同，则按照格式上报电压{sprintf(buf,"%.2lf+%.1lf+%02d%02d%02d\r\n",val,(double)EEPROM_Read(0x10)/10,hour,min,second);HAL_UART_Transmit_DMA(&huart1,(uint8_t*)buf,strlen(buf));//串口发送}}if(htim->Instance==TIM1)//间隔0.2s切换LED电平（电压满足条件+监测处于ON状态）{if(val>(double)EEPROM_Read(0x10)/10*3.3&&buf2[8]=='N'){HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);HAL_GPIO_TogglePin(GPIOC,GPIO_PIN_8);HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);}else{HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_8,GPIO_PIN_SET);HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);}}if(htim->Instance==TIM3)//给按键设定一个10ms中断回调函数{key[0].state=HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_0);key[1].state=HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_1);key[2].state=HAL_GPIO_ReadPin(GPIOB,GPIO_PIN_2);key[3].state=HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0);for(int i=0;i<4;i++){switch(key[i].step){case 0:{if(key[i].state==GPIO_PIN_RESET){key[i].step=1;}}break;case 1:{if(key[i].state==GPIO_PIN_RESET){if(i==0){if(++cnt1%2==0)//cnt1是偶数，监测ON（默认监测打开）；cnt1是奇数，监测OFF{sprintf(buf2," LED:ON");if(num==1)//这是在页面1显示的内容{LCD_ClearLine(Line6);LCD_DisplayStringLine(Line6,(uint8_t*)buf2);}}else{/*HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_SET);HAL_GPIO_WritePin(GPIOC,GPIO_PIN_8,GPIO_PIN_SET);HAL_GPIO_WritePin(GPIOD,GPIO_PIN_2,GPIO_PIN_RESET);*/sprintf(buf2," LED:OFF");if(num==1){LCD_ClearLine(Line6);LCD_DisplayStringLine(Line6,(uint8_t*)buf2);}}}if(i==1){if(++cnt2%2==1)//设定上报时间的页面是页面2{num=2;LCD_Clear(White);LCD_DisplayStringLine(Line2,(uint8_t*)" Setting ");sprintf(buf," %02d-%02d-%02d ",hour,min,second);LCD_DisplayStringLine(Line5,(uint8_t*)buf);}else{num=1;}cnt3=0;}if(i==2&&num==2)//只有在页面2时按键PB3才计入，抗干扰{cnt3++;}if(i==3&&num==2)//只有在页面2时按键PA0才计入，抗干扰{if(cnt3%3==0)//进入Setting页面默认调整时{hour++;if(hour==24) hour=0;LCD_ClearLine(Line5);sprintf(buf," %02d-%02d-%02d ",hour,min,second);LCD_DisplayStringLine(Line5,(uint8_t*)buf);}if(cnt3%3==1)//按一次为分{min++;if(min==60) min=0;LCD_ClearLine(Line5);sprintf(buf," %02d-%02d-%02d ",hour,min,second);LCD_DisplayStringLine(Line5,(uint8_t*)buf);}if(cnt3%3==2)//按两次为秒{second++;if(second==60) second=0;LCD_ClearLine(Line5);sprintf(buf," %02d-%02d-%02d ",hour,min,second);LCD_DisplayStringLine(Line5,(uint8_t*)buf);}}key[i].step=2;}else{key[i].step=0;}}break;case 2:{if(key[i].state==GPIO_PIN_SET){key[i].step=0;}}break;}}}
}
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{if(huart->Instance==USART1)//串口中断回调函数，接收到一次上报电压的数据就回复一次ok{sscanf(buf1,"k%lf\r\n",&k);EEPROM_Write(0x10,(uint8_t)(10*k));HAL_UART_Transmit_DMA(&huart1,(uint8_t*)"ok\r\n",4);HAL_UART_Receive_DMA(&huart1,(uint8_t*)buf1,6);}
}
/* USER CODE END PFP *//* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 *//* 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_DMA_Init();MX_RTC_Init();MX_TIM1_Init();MX_TIM8_Init();MX_USART1_UART_Init();MX_ADC2_Init();MX_TIM3_Init();/* USER CODE BEGIN 2 */I2CInit();HAL_TIM_Base_Start_IT(&htim8);HAL_TIM_Base_Start_IT(&htim1);HAL_TIM_Base_Start_IT(&htim3);LCD_Init();LED_Close();LCD_Clear(White);LCD_SetBackColor(White);LCD_SetTextColor(Black);if(EEPROM_Read(0x99)!=2)//监测板子是不是第一次上电{EEPROM_Write(0x99,2);HAL_Delay(20);EEPROM_Write(0x10,1);}HAL_UART_Receive_DMA(&huart1,(uint8_t*)buf1,6);sprintf(buf2," LED:ON");/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE *//* USER CODE BEGIN 3 */}/* USER CODE END 3 */
}这篇关于蓝桥杯嵌入式2015年第六届省赛主观题解析的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
