为什么我输到屏幕上X Y Z 的值都是-1.。。
用的是8574AT驱动的1602液晶屏
#include <Wire.h> //调用arduino自带的I2C库
#include <LiquidCrystal_I2C.h>
#define Register_ID 0
#define Register_2D 0x2D
#define Register_X0 0x32
#define Register_X1 0x33
#define Register_Y0 0x34
#define Register_Y1 0x35
#define Register_Z0 0x36
#define Register_Z1 0x37
LiquidCrystal_I2C lcd(0x3F,16,2);
int ADXAddress = 0x3F>>1; //转换为7位地址
int reading = 0;
int val = 0;
int X0,X1,X_out;
int Y0,Y1,Y_out;
int Z1,Z0,Z_out;
double Xg,Yg,Zg;
void setup()
{
Serial.begin(9600);
lcd.init();
delay(100);
Wire.begin(); //初始化I2C
delay(100);
Wire.beginTransmission(ADXAddress);
Wire.write(Register_2D);
Wire.write(8);
Wire.endTransmission();
}
void loop()
{
Wire.beginTransmission(ADXAddress);
Wire.write(Register_X0);
Wire.write(Register_X1);
Wire.endTransmission();
Wire.requestFrom(ADXAddress,2);
if(Wire.available()<=2);
{
X0 = Wire.read();
X1 = Wire.read();
X1 = X1<<8;
X_out = X0+X1;
Serial.println( X_out);
}
Wire.beginTransmission(ADXAddress);
Wire.write(Register_Y0);
Wire.write(Register_Y1);
Wire.endTransmission();
Wire.requestFrom(ADXAddress,2);
if(Wire.available()<=2);
{
Y0 = Wire.read();
Y1 = Wire.read();
Y1 = Y1<<8;
Y_out = Y0+Y1;
Serial.println( Y_out);
}
Wire.beginTransmission(ADXAddress);
Wire.write(Register_Z0);
Wire.write(Register_Z1);
Wire.endTransmission();
Wire.requestFrom(ADXAddress,2);
if(Wire.available()<=2);
{
Z0 = Wire.read();
Z1 = Wire.read();
Z1 = Z1<<8;
Z_out = Z0+Z1;
Serial.println( Z_out);
}
Xg = X_out/256.00;//把输出结果转换为重力加速度g,精确到小数点后2位。
Yg = Y_out/256.00;
Zg = Z_out/256.00;
lcd.clear();
lcd.backlight();
lcd.print("X="); //使屏幕显示文字X=
lcd.print(Xg);
lcd.setCursor(8, 0);
lcd.print("Y=");
lcd.print(Yg);
lcd.setCursor(0, 1);
lcd.print("Z=");
lcd.print(Zg);
delay(300); //延时0.3秒,刷新频率这里进行调整
}
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