驱动代码
/*!
* @file SEN0220.ino
* @brief Infrared CO2 Sensor 0-50000ppm(Wide Range)
* @n This example is used for detectting CO2 concentration.
* @copyright Copyright (c) 2010 DFRobot Co.Ltd (http://www.dfrobot.com)
* @license The MIT License (MIT)
* @author lg.gang(lg.gang@qq.com)
* @version V1.0
* @date 2016-06-06
*/
#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11); // RX, TX
unsigned char hexData[9] = {0xFF, 0x01, 0x86, 0x00, 0x00, 0x00, 0x00, 0x00, 0x79}; //Read the gas density command /Don't change the order
void setup()
{
Serial.begin(9600);
while (!Serial) {
}
mySerial.begin(9600);
}
void loop()
{
mySerial.write(hexData, 9);
delay(500);
for (int i = 0, j = 0; i < 9; i++)
{
if (mySerial.available() > 0)
{
long hi, lo, CO2;
int ch = mySerial.read();
if (i == 2) {
hi = ch; //High concentration
}
if (i == 3) {
lo = ch; //Low concentration
}
if (i == 8) {
CO2 = hi * 256 + lo; //CO2 concentration
Serial.print("CO2 concentration: ");
Serial.print(CO2);
Serial.println("ppm");
}
}
}
}