sdp600压力传感器 i2c 使用
本帖最后由 sem599 于 2014-6-21 18:49 编辑求助各位。 看俺的代码写的对不对
SDP600 是微压差传感器。
i2C地址是0x40, 软复位指令是0xfe测量指令是0xf1
高手看看我的i2c读取指令对不对。
#include <Wire.h>
// copy to sdp600 @ 0x40
// this code firstly reset the sensor by commend 0xfe
// secondly commend it to measure 0xf1
#define ADDR 0b01000000
void setup()
{
// put your setup code here, to run once:
Serial.begin(9600);
Wire.begin();
void loop()
{
int val = 0;
//reset
Wire.beginTransmission(ADDR);
Wire.write(0b11111110);//soft reset 0xfe
Wire.endTransmission();
delay(500);
//measure
Wire.beginTransmission(ADDR);
Wire.write(0b11110001);//triger sensor to measure hF1
Wire.endTransmission();
digitalWrite(13, LOW);
delay(500);
Wire.beginTransmission(ADDR);
delay(500);
Wire.requestFrom(ADDR, 3); // 3byte every time
byte a = Wire.read();
byte b = Wire.read();
byte c = Wire.read();
Serial.println(a, BIN);
Serial.println(b, BIN);
Serial.println(c, BIN);
Wire.endTransmission();
val= (a<<8) + b;
Serial.println(val);
digitalWrite(13, HIGH);
delay(1000);
}
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