蓝桥杯嵌入式第七届国赛程序----温、湿度监控设备

Kefira ·

更新时间:2024-09-20

· 855 次阅读

本届国赛题目较为综合，涉及adc、串口、输入捕获、输出比较等。

工程结构

init.c


#include "stm32f10x.h"
#include "lcd.h"
#include "init.h"
#include "i2c.h"
void GPIO_Int(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	ADC_InitTypeDef  ADC_InitStructure;
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB |
                         RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD, ENABLE);
	//led
	GPIO_InitStructure.GPIO_Pin = 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_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_Init(GPIOC, &GPIO_InitStructure);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
    GPIO_Init(GPIOD, &GPIO_InitStructure);
	//key
	//led
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2;
    GPIO_Init(GPIOB, &GPIO_InitStructure);
	GPIO_SetBits(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_SetBits(GPIOD,GPIO_Pin_2);
	GPIO_ResetBits(GPIOD,GPIO_Pin_2);
	//adc
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init(GPIOB, &GPIO_InitStructure);
	 ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = 1;
  ADC_Init(ADC1, &ADC_InitStructure);
  /* ADC1 regular channel8 configuration */ 
  ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_13Cycles5);
  /* Enable AWD interrupt */
  ADC_ITConfig(ADC1, ADC_IT_AWD, ENABLE);
  /* Enable ADC1 */
  ADC_Cmd(ADC1, ENABLE);
  /* Enable ADC1 reset calibration register */   
  ADC_ResetCalibration(ADC1);
  /* Check the end of ADC1 reset calibration register */
  while(ADC_GetResetCalibrationStatus(ADC1));
  /* Start ADC1 calibration */
  ADC_StartCalibration(ADC1);
  /* Check the end of ADC1 calibration */
  while(ADC_GetCalibrationStatus(ADC1));
  NVIC_Configuration();
}
void TIM2_Init(void)
{
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	GPIO_InitTypeDef GPIO_InitStructure;
	TIM_OCInitTypeDef  TIM_OCInitStructure;
	/* TIM3 clock enable */
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
  /* GPIOA  clock enable */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_1;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
	 TIM_TimeBaseStructure.TIM_Period = 999;
  TIM_TimeBaseStructure.TIM_Prescaler = 71;
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
  /* PWM1 Mode configuration: Channel1 */
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 500;
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
  TIM_OC2Init(TIM2, &TIM_OCInitStructure);
  TIM_Cmd(TIM2, ENABLE);
}
void TIM3_Init(void)
{
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
	GPIO_InitTypeDef GPIO_InitStructure;
	TIM_ICInitTypeDef  TIM_ICInitStructure;
	/* TIM3 clock enable */
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
  /* GPIOA  clock enable */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_7;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
	TIM_TimeBaseStructure.TIM_Period = 65535;
    TIM_TimeBaseStructure.TIM_Prescaler = 71;
    TIM_TimeBaseStructure.TIM_ClockDivision = 0;
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
    TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
	TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;
    TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
    TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
    TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
    TIM_ICInitStructure.TIM_ICFilter = 0x0;
  TIM_ICInit(TIM3, &TIM_ICInitStructure);
  TIM_SelectSlaveMode(TIM3,TIM_SlaveMode_Reset);
  TIM_SelectInputTrigger(TIM3,TIM_TS_TI2FP2);
  /* TIM enable counter */
  TIM_Cmd(TIM3, ENABLE);
}
void LCD_Init(void)
{
    STM3210B_LCD_Init();
	LCD_Clear(Blue);
	LCD_SetBackColor(Blue);
	LCD_SetTextColor(White);
	SysTick_Config(SystemCoreClock/1000);
	LCD_DisplayStringLine(Line0,"  Real-time Data    ");	
	//LCD_DisplayStringLine(Line1,"Now Temp    -20C    ");	
	LCD_DisplayStringLine(Line2,"                    ");
	//LCD_DisplayStringLine(Line3,"Now Humi     60%    ");
	LCD_DisplayStringLine(Line4,"                    ");
	//LCD_DisplayStringLine(Line5,"Clock      12-50-00 ");
	LCD_DisplayStringLine(Line6,"                    ");
	//LCD_DisplayStringLine(Line7,"Number         20   ");	
	LCD_DisplayStringLine(Line8,"                    ");
	LCD_DisplayStringLine(Line9,"                    ");	
}
void USART2_Init(void)
{
	USART_InitTypeDef USART_InitStructure;
	GPIO_InitTypeDef GPIO_InitStructure;
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); 
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
	USART_InitStructure.USART_BaudRate = 9600;
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;
  USART_InitStructure.USART_StopBits = USART_StopBits_1;
  USART_InitStructure.USART_Parity = USART_Parity_No;
  USART_InitStructure.USART_HardwareFlowControl =   USART_HardwareFlowControl_None;
  USART_InitStructure.USART_Mode = USART_Mode_Rx |USART_Mode_Tx ;
  USART_Init(USART2, &USART_InitStructure);
  USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
    USART_Cmd(USART2, ENABLE);
}
void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;
  /* Configure the NVIC Preemption Priority Bits */  
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
  /* Enable the USART2 Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}
unsigned char I2C_Read(unsigned char add)
{
	unsigned char temp;
	I2CStart();
	I2CSendByte(0xa0);
	I2CSendAck();
	I2CSendByte(add);
	I2CSendAck();
	I2CStart();
	I2CSendByte(0xa1);
	I2CSendAck();
	temp=I2CReceiveByte();
	I2CSendAck();
	I2CStop();
	return temp;
}
void I2C_Write(unsigned char add,unsigned char dat)
{
	I2CStart();
	I2CSendByte(0xa0);
	I2CSendAck();
	I2CSendByte(add);
	I2CSendAck();
	I2CSendByte(dat);
	I2CSendAck();
	I2CStop();
}

主程序

/*
温度与数模转换的关系 T=kN+b，（N为模数转换值，T是温度）
由已知条件得 T=80N/4095-20;
湿度与捕获值得关系
H=m/C+n;(C为捕获值，H是湿度)
由已知条件得
H=（8000/C+10）/9
*/
#include "stm32f10x.h"
#include "lcd.h"
#include "init.h"
#include "i2c.h"
#include "stdio.h"
u32 TimingDelay = 0;
u8 string[20];
void Key_Scan(void);
void Delay_Ms(u32 nTime);
unsigned int TIM3_Cap(void);
void USART2_Send(u8 *str);
void ADC_Read(void);
void LED_Disp(u16 led);
u8 miao_flag=0;
u16 miao=0;
u8 fazhi=0,shuju=0;
u16 led=0;
int i;
signed char scTemp,scTemp1;
unsigned char ucHumi,ucHumi1,ucFreq; //eeprom只能存整数，所以这里的频率是实际频率的一百分之一
unsigned char ucHour,ucMin,ucSec;
unsigned char ucDataNo=0,ucDataNum=0,Data[60][5]; 
unsigned long ulTick_ms=0;
unsigned char ucInte;
unsigned long ulSec=0,ulSec1=0,ulSec2=0;
u8 shezhi=0,qie=0;
//Main Body
int main(void)
{
	LCD_Init();
	GPIO_Int();
	TIM2_Init();
	TIM3_Init();
	i2c_init();
	USART2_Init();
	Delay_Ms(5);
	if(I2C_Read(0x20)!=0)
	{
	 Delay_Ms(5);
	 I2C_Write(0x20,0);
	 Delay_Ms(5);
	 I2C_Write(0x00,40);
	 Delay_Ms(5);
	 I2C_Write(0x01,80);
	 Delay_Ms(5);
	 I2C_Write(0x02,1);
	 Delay_Ms(5);
	 I2C_Write(0x03,15);
	}
	Delay_Ms(5);
	scTemp1=I2C_Read(0x00);
	Delay_Ms(5);
	ucHumi1=I2C_Read(0x01);
	Delay_Ms(5);
	ucInte=I2C_Read(0x02);
	Delay_Ms(5);
	ucFreq=I2C_Read(0x03);
	TIM_SetAutoreload(TIM2,10000/ucFreq-1);		//周期值
	TIM_SetCompare2(TIM2,5000/ucFreq-1);		  //占比1/2
	while(1)
	{
	Key_Scan();
	if(fazhi==1)
	{
	fazhi=0;
	sprintf((char*)string,"C %02u-%02u-%02u %3dC %2u%%\r\n",ucHour,ucMin,ucSec,scTemp1,ucHumi1);
	USART2_Send(string);
	}
    else if(shuju==1)
	{
	shuju=0;
	for(i=0;i<ucDataNum;i++)
	{
	sprintf((char*)string,"S %02u-%02u-%02u %3dC %2u%%\r\n",Data[i][0],Data[i][1],Data[i][2],Data[i][3],Data[i][4]);
	USART2_Send(string);
	}
	}
	ADC_Read();
	LED_Disp(led);
	}
}
void Key_Scan(void)
{
 if(RB1==0)
 {
 Delay_Ms(5);
 if(RB1==0)
 {
  if(shezhi==0)
  {
  shezhi=1;
  LCD_DisplayStringLine(Line0,"  Parameter Setup   ");
  sprintf((char*)string,"Temp Upper:%3dC       ",scTemp1);
  LCD_DisplayStringLine(Line1,string);
  sprintf((char*)string,"Humi Upper:%3d%%      ",ucHumi1);
  LCD_DisplayStringLine(Line3,string);
  sprintf((char*)string,"Interval  : %1us       ",ucInte);
  LCD_DisplayStringLine(Line5,string);
  sprintf((char*)string,"Frequency :%2u.%1ukHz ",ucFreq/10,ucFreq%10);
  LCD_DisplayStringLine(Line7,string);
  }
  else if(shezhi==1)
  {
  shezhi=0;
  LCD_DisplayStringLine(Line0,"  Real-time Data    ");
  Delay_Ms(5);
	 I2C_Write(0x00,scTemp1);
	 Delay_Ms(5);
	 I2C_Write(0x01,ucHumi1);
	 Delay_Ms(5);
	 I2C_Write(0x02,ucInte);
	 Delay_Ms(5);
	 I2C_Write(0x03,ucFreq);
  }
 }while(!RB1);
 }
 else if(RB2==0)
 {
 Delay_Ms(5);
 if(RB2==0)
 {
  if(shezhi==1)
  {
	  if(qie==0||qie==4)
	  {
	  qie=1;
	  LCD_SetTextColor(Red);
	  sprintf((char*)string,"Temp Upper:%3dC       ",scTemp1);
	  LCD_DisplayStringLine(Line1,string);
	  LCD_SetTextColor(White);
	  sprintf((char*)string,"Humi Upper:%3d%%      ",ucHumi1);
	  LCD_DisplayStringLine(Line3,string);
	  sprintf((char*)string,"Interval  : %1us       ",ucInte);
	  LCD_DisplayStringLine(Line5,string);
	  sprintf((char*)string,"Frequency :%2u.%1ukHz ",ucFreq/10,ucFreq%10);
	  LCD_DisplayStringLine(Line7,string);
	  }
      else 	if(qie==1)
	  {
	  qie=2;
	  LCD_SetTextColor(Red);
	  sprintf((char*)string,"Humi Upper:%3d%%      ",ucHumi1);
	  LCD_DisplayStringLine(Line3,string);
	  LCD_SetTextColor(White);
	  sprintf((char*)string,"Temp Upper:%3dC       ",scTemp1);
	  LCD_DisplayStringLine(Line1,string);
	  sprintf((char*)string,"Interval  : %1us       ",ucInte);
	  LCD_DisplayStringLine(Line5,string);
	  sprintf((char*)string,"Frequency :%2u.%1ukHz ",ucFreq/10,ucFreq%10);
	  LCD_DisplayStringLine(Line7,string);
	  }
	  else 	if(qie==2)
	  {
	  qie=3;
	  LCD_SetTextColor(Red);
	  sprintf((char*)string,"Interval  : %1us       ",ucInte);
	  LCD_DisplayStringLine(Line5,string);
	  LCD_SetTextColor(White);
	  sprintf((char*)string,"Temp Upper:%3dC       ",scTemp1);
	  LCD_DisplayStringLine(Line1,string);
	  sprintf((char*)string,"Humi Upper:%3d%%      ",ucHumi1);
	  LCD_DisplayStringLine(Line3,string);
	  sprintf((char*)string,"Frequency :%2u.%1ukHz ",ucFreq/10,ucFreq%10);
	  LCD_DisplayStringLine(Line7,string);
	  }
	  else 	if(qie==3)
	  {
	  qie=4;
	  LCD_SetTextColor(Red);
	  sprintf((char*)string,"Frequency :%2u.%1ukHz ",ucFreq/10,ucFreq%10);
	  LCD_DisplayStringLine(Line7,string);	  
	  LCD_SetTextColor(White);
	  sprintf((char*)string,"Temp Upper:%3dC       ",scTemp1);
	  LCD_DisplayStringLine(Line1,string);
	  sprintf((char*)string,"Humi Upper:%3d%%      ",ucHumi1);
	  LCD_DisplayStringLine(Line3,string);
	  sprintf((char*)string,"Interval  : %1us       ",ucInte);
	  LCD_DisplayStringLine(Line5,string);
	  }
  }
 }while(!RB2);
 }
 else if(RB3==0)
 {
 Delay_Ms(5);
 if(RB3==0)
 {
  if(shezhi==1)
  {
	  if(qie==1)
	  {
	   if(scTemp1<60)
	   scTemp1+=1;
	   LCD_SetTextColor(Red);
	   sprintf((char*)string,"Temp Upper:%3dC       ",scTemp1);
       LCD_DisplayStringLine(Line1,string);
	   LCD_SetTextColor(White);
	  }
	  else if(qie==2)
	  {
	  if(ucHumi1<90)
	  ucHumi1+=5;
	  LCD_SetTextColor(Red);
	  sprintf((char*)string,"Humi Upper:%3d%%      ",ucHumi1);
	  LCD_DisplayStringLine(Line3,string);
	  LCD_SetTextColor(White);
	  }
      else if(qie==3)
	  {
	  if(ucInte<5)
	  ucInte+=1;
	  LCD_SetTextColor(Red);
	  sprintf((char*)string,"Interval  : %1us       ",ucInte);
	  LCD_DisplayStringLine(Line5,string);
	  LCD_SetTextColor(White);
	  }
	  else if(qie==4)
	  {
	  if(ucFreq-20)
	   scTemp1-=1;
	   LCD_SetTextColor(Red);
	   sprintf((char*)string,"Temp Upper:%3dC       ",scTemp1);
       LCD_DisplayStringLine(Line1,string);
	   LCD_SetTextColor(White);
	  }
	  else if(qie==2)
	  {
	  if(ucHumi1>10)
	  ucHumi1-=5;
	  LCD_SetTextColor(Red);
	  sprintf((char*)string,"Humi Upper:%3d%%      ",ucHumi1);
	  LCD_DisplayStringLine(Line3,string);
	  LCD_SetTextColor(White);
	  }
      else if(qie==3)
	  {
	  if(ucInte>1)
	  ucInte-=1;
	  LCD_SetTextColor(Red);
	  sprintf((char*)string,"Interval  : %1us       ",ucInte);
	  LCD_DisplayStringLine(Line5,string);
	  LCD_SetTextColor(White);
	  }
	  else if(qie==4)
	  {
	  if(ucFreq>10)
	  ucFreq-=5;
	  LCD_SetTextColor(Red);
	  sprintf((char*)string,"Frequency :%2u.%1ukHz ",ucFreq/10,ucFreq%10);
	  LCD_DisplayStringLine(Line7,string);
	  LCD_SetTextColor(White);
	  TIM_SetAutoreload(TIM2,10000/ucFreq-1);
	  TIM_SetCompare2(TIM2,5000/ucFreq-1);
	  }
  }
 }while(!RB4);
 }
}
void Delay_Ms(u32 nTime)
{
	TimingDelay = nTime;
	while(TimingDelay != 0);	
}
void ADC_Read(void)
{
   if(shezhi==0)
   {
	   if(ulSec!=ulSec1)
	  {
	  ulSec1=ulSec;
	  ADC_SoftwareStartConvCmd(ADC1, ENABLE);
	  scTemp=(ADC_GetConversionValue(ADC1)*80)/0xfff-20;
	  sprintf((char*)string,"Now Temp     %3dC   ",scTemp);
	  LCD_DisplayStringLine(Line1,string);
	  ucHumi=(80000/TIM3_Cap()+10)/9;
	  sprintf((char*)string,"Now Humi     %3d%%   ",ucHumi);
	  LCD_DisplayStringLine(Line3,string);
	  sprintf((char*)string,"Clock      %02u-%02u-%02u ",ucHour,ucMin,ucSec);
	  LCD_DisplayStringLine(Line5,string);
	  sprintf((char*)string,"Number         %2u   ",ucDataNum);
	  LCD_DisplayStringLine(Line7,string);	
	  }
	  if((ulSec-ulSec2)>=ucInte)
	  {
	  ulSec2=ulSec;
	  Data[ucDataNo][0]=ucHour;
	  Data[ucDataNo][1]=ucMin;
	  Data[ucDataNo][2]=ucSec;
	  Data[ucDataNo][3]=scTemp;
	  Data[ucDataNo][4]=ucHumi;
	  if(++ucDataNo==60)ucDataNo=0;
	  if(ucDataNum!=60)ucDataNum++;
	  sprintf((char*)string,"Number         %2u   ",ucDataNum);
	  LCD_DisplayStringLine(Line7,string);
	  led^=4;
	  }
   }
}
unsigned int TIM3_Cap(void)
{
if(TIM_GetFlagStatus(TIM3,TIM_FLAG_CC2))
{
return TIM_GetCapture2(TIM3)+1;
}
else 
return 0;
}
void USART2_IRQHandler(void)
{
  u8 temp;
  if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
  {
    USART_ClearITPendingBit(USART2, USART_IT_RXNE);
    temp = USART_ReceiveData(USART2);
    if(temp == 'C')
    {
     fazhi=1;
    }
	else if(temp=='S')
	{
	shuju=1;
	}
  }
}
void USART2_Send(u8 *str)
{
u8 index=0;
do{
USART_SendData(USART2,str[index++]);
while(USART_GetFlagStatus(USART2,USART_FLAG_TXE)==RESET);
}while(str[index]!=0);
}
void LED_Disp(u16 led)
{
GPIO_Write(GPIOC,~led<=scTemp1)
	{
	if(ulTick_ms%200==0)
	led^=1;
	}
	else led&=0xfe;
	if(ucHumi>=ucHumi1)
	{
	if(ulTick_ms%200==0)
	led^=2;
	}
	else led&=0xfd;
}



作者：初入江湖的郭大侠
                    
 
                

                            监控
                            蓝桥杯
                            程序
                            嵌入
                            嵌入式


           
    
    

            
                
                    
                
            
            
                
    
        
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