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本項(xiàng)目基于IDT_ZMOD4410氣體傳感器套件開(kāi)發(fā)的床頭空氣質(zhì)量檢測(cè)儀。項(xiàng)目開(kāi)發(fā)理由：人們90%以上的時(shí)間呆在室內(nèi)，其中以睡眠時(shí)間為最長(zhǎng)，且處于同一個(gè)地方，睡覺(jué)時(shí)室內(nèi)的污染物含量會(huì)隨著時(shí)間變化而變化，對(duì)人體危害程度也不斷變化。高污染物含量將直接影響睡眠質(zhì)量，因而有必要檢測(cè)床頭空氣質(zhì)量。本裝置采用IDT_ZMOD4410傳感器檢測(cè)室內(nèi)空氣質(zhì)量，stm32f103系列開(kāi)發(fā)板輔助，將采集到的數(shù)據(jù)傳輸至PC端進(jìn)行處理，PC端將處理后的數(shù)據(jù)在上位機(jī)進(jìn)行顯示，同時(shí)將該數(shù)據(jù)通過(guò)EDP協(xié)議上傳至云端儲(chǔ)存，可實(shí)現(xiàn)每日、周度、月度報(bào)告。

1、PCB板

2、stm32

使用keil

int fgetc(FILE *f)

{

while (USART_GetFlagStatus(USART3, USART_FLAG_RXNE) == RESET);

return (int)USART_ReceiveData(USART3);

}

unsigned char sensor_data[17];

unsigned char air_data[17];

unsigned char r_cnt;

unsigned char r_done;

unsigned char test;

void USART3_IRQHandler(void)

{

if(USART_GetFlagStatus(USART3,USART_FLAG_RXNE)!=RESET)

{

USART_ClearFlag(USART3,USART_FLAG_RXNE); 

/*test = (USART3->DR & (uint16_t)0x01FF);

Usart_SendByte(USART3,test);*/

sensor_data[r_cnt] = (USART3->DR & (uint16_t)0x01FF);

/*if((r_cnt==0)&&(r_data[0]==0x01))

{

r_cnt=1; 

// continue;

}

else if((r_cnt==1)&&(r_data[1]==0x03))

{

r_cnt=2; 

}

else if((r_cnt==2)&&(r_data[1]==0x0C))

{

r_cnt=3; 

}

else if(r_cnt>=3&&r_cnt<=16)

{

r_cnt++;

}

else

r_cnt=0;*/

/*if((r_cnt>=3)&&(r_cnt<=16))

{

r_cnt++; 

// continue;

}

else if((r_cnt==2)&&(r_data[1]==0x0C))

{

r_cnt=3; 

}

else if((r_cnt==1)&&(r_data[1]==0x03))

{

r_cnt=2;

}

else if((r_cnt==0)&&(r_data[0]==0x01))

{

r_cnt=1;

}

else

r_cnt=0;

if(r_cnt==17)

{

r_done = 1;

r_cnt = 0;

}*/

switch(r_cnt)

{

case 0: if(sensor_data[0]==0x01)

{

r_cnt = 1;

break;

}

     

  else 

{

r_cnt = 0;

break;

}

case 1: if(sensor_data[1]==0x03)

{

r_cnt = 2;

break;

}

     

  else 

{

r_cnt = 0;

break;

} 

case 2: if(sensor_data[2]==0x0c)

{

r_cnt = 3;

break;

}

     

  else 

{

r_cnt = 0;

break;

} 

case 3: r_cnt = 4;

break;

case 4: r_cnt = 5;

break;

case 5: r_cnt = 6;

break;

case 6: r_cnt = 7;

break;

case 7: r_cnt = 8;

break;

case 8: r_cnt = 9;

break;

case 9: r_cnt = 10;

break;

case 10: r_cnt = 11;

break;

case 11: r_cnt = 12;

break;

case 12: r_cnt = 13;

break;

case 13: r_cnt = 14;

break;

case 14: r_cnt = 15;

break;

case 15: r_cnt = 16;

break;

case 16: r_cnt = 17;

break;

default:  r_cnt = 0;

  break;

}

if(r_cnt==17)

{

memcpy(shuju,sensor_data,17);

//r_done = 1;

r_cnt = 0;

}

//Usart_SendByte(USART3,r_data);

}

}

2.mian函數(shù)部分，將全局變量里的數(shù)據(jù)在LCD上顯示

#include "stm32f4xx.h"

#include "./led/bsp_led.h"

#include "./usart/bsp_debug_usart.h"

#include "./sdram/bsp_sdram.h"

extern unsigned char sensor_data[17];

extern unsigned char air_data[17];

extern unsigned char r_cnt;

extern unsigned char r_done;

unsigned char data[17];

int i,j;

int a;

int b1;

int b2;

float co2;

float tvoc;

float ch2o;

float pm25;

float humidity;

float temperature;

unsigned char shuju[17];

unsigned char w_num;

void Delay(__IO u32 nCount); 

void LCD_Test(void);

/**

稍等