HMC5883L地磁传感器连接arduino
#include <Wire.h> //I2C Arduino Library#define address 0x1E //0011110b, I2C 7bit address of HMC5883
void setup(){
//Initialize Serial and I2C communications
Serial.begin(9600);
Wire.begin();
//Put the HMC5883 IC into the correct operating mode
Wire.beginTransmission(address); //open communication with HMC5883
Wire.send(0x02); //select mode register
Wire.send(0x00); //continuous measurement mode
Wire.endTransmission();
}
void loop(){
int x,y,z; //triple axis data
//Tell the HMC5883 where to begin reading data
Wire.beginTransmission(address);
Wire.send(0x03); //select register 3, X MSB register
Wire.endTransmission();
//Read data from each axis, 2 registers per axis
Wire.requestFrom(address, 6);
if(6<=Wire.available()){
x = Wire.receive()<<8; //X msb
x |= Wire.receive(); //X lsb
z = Wire.receive()<<8; //Z msb
z |= Wire.receive(); //Z lsb
y = Wire.receive()<<8; //Y msb
y |= Wire.receive(); //Y lsb
}
//Print out values of each axis
Serial.print("x: ");
Serial.print(x);
Serial.print("y: ");
Serial.print(y);
Serial.print("z: ");
Serial.println(z);
delay(250);
}
是直接连接VCC，GND，SDA，SCL吗？可是当有物体靠近时数值没有
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