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設(shè)計(jì)做有關(guān)空氣質(zhì)量檢測(cè)的都可以選擇mp503這個(gè)傳感器哦~
本壓縮包里包含基礎(chǔ)的mp403 ADC采集和4腳OLED的顯示
首先mp403使用前請(qǐng)先預(yù)熱5min左右才能正常工作
A:0V B:0V ---- 質(zhì)量?jī)?yōu)
A:0V B:5V ---- 輕度污染
A:5V B:0V ---- 中度污染
A:5V B:5V ---- 重度污染
mp503檢測(cè)方式為adc電壓采集
我用的是
A--PA0
B--PA1
VCC--VCC
GND--GND
具體空氣質(zhì)量等級(jí)的評(píng)級(jí)可搜索mp503手冊(cè)查看
單片機(jī)源程序如下:
- #include "delay.h"
- #include "sys.h"
- #include "oled.h"
- #include "pid.h"
- #include "adc.h"
- int main(void)
- {
- float temp0,temp1,mp503A,mp503B;
- u16 adcx0,adcx1;
- delay_init(); //延時(shí)函數(shù)初始化
- OLED_Init(); //初始化OLED
- OLED_Clear();
- Adc_Init(); //ADC初始化
- OLED_XianShi();
- while(1)
- {
- adcx0=Get_Adc_Average(ADC_Channel_0,20);
- temp0=(float)adcx0*(3.3/4096);
- mp503A=adcx0=temp0;
- OLED_ShowNum(38,0,temp0,1,16);
- temp0-=adcx0;
- temp0*=1000;
- OLED_ShowNum(54,0,temp0,3,16);
- delay_ms(250); //顯示A0電壓輸出(A0=A)
-
- adcx1=Get_Adc_Average(ADC_Channel_1,20);
- temp1=(float)adcx1*(3.3/4096);
- mp503B=adcx1=temp1;
- OLED_ShowNum(38,3,temp1,1,16);
- temp1-=adcx1;
- temp1*=1000;
- OLED_ShowNum(54,3,temp1,3,16);
- delay_ms(250); //顯示A1電壓輸出(A1=B)
- if(mp503A<1)
- {
- if(mp503B<1)
- OLED_ShowCHinese(72,5,0); //空氣質(zhì)量?jī)?yōu)
- else
- {
- OLED_ShowCHinese(72,5,1);
- //OLED_ShowCHinese(70,5,2);
- //OLED_ShowCHinese(70,5,3);
- //OLED_ShowCHinese(70,5,4); //輕度污染
- }
- }
- if(mp503A>=2)
- {
- if(mp503B<1)
- {
- OLED_ShowCHinese(72,5,2);
- //OLED_ShowCHinese(70,5,0);
- //OLED_ShowCHinese(70,5,0);
- //OLED_ShowCHinese(70,5,0);
- }
- else
- {
- OLED_ShowCHinese(72,5,3);
- //OLED_ShowCHinese(70,5,0);
- //OLED_ShowCHinese(70,5,0);
- //OLED_ShowCHinese(70,5,0);
- }
- }
- }
-
- }
Keil代碼下載:
MP503.7z
(252.59 KB, 下載次數(shù): 38)
2022-2-9 21:20 上傳
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