小合體

#include <Wire.h>

#include <Adafruit_GFX.h>

#include <Adafruit_SSD1306.h>

// 7-bit address of HMC5883 compass

#define Addr 0x1E

#define OLED_RESET 4

Adafruit_SSD1306 display(OLED_RESET);

#define NUMFLAKES 10

#define XPOS 0

#define YPOS 1

#define DELTAY 2

#define LOGO16_GLCD_HEIGHT 16

#define LOGO16_GLCD_WIDTH  16

#if (SSD1306_LCDHEIGHT != 64)

#error("Height incorrect, please fix Adafruit_SSD1306.h!");

#endif

void setup() {

Serial.begin(9600);

delay(100); // Power up delay

Wire.begin();

// Set operating mode to continuous

Wire.beginTransmission(Addr);

//label self 0x02

Wire.write(0x02);

Wire.write(0x00);

Wire.endTransmission();

display.begin(SSD1306_SWITCHCAPVCC, 0x3C);

display.clearDisplay();

}

double radx, rady, radz;

void loop() {

int x, y, z;

// Initiate communications with compass

Wire.beginTransmission(Addr);

Wire.write(0x03);// Send request to X MSB register

Wire.endTransmission();

Wire.requestFrom(Addr, 6);// Request 6 bytes; 2 bytes per axis

if(Wire.available() <=6) {// If 6 bytes available

x = Wire.read() << 8 | Wire.read();

z = Wire.read() << 8 | Wire.read();

y = Wire.read() << 8 | Wire.read();

radx = x / 131.0;

rady = y / 131.0;

radz = z / 131.0;

}

showMsg();

delay(20);

}

void showMsg(){

display.clearDisplay();

display.setTextColor(WHITE);

display.setCursor(1,0);

display.setTextSize(2);

display.print("X:");

display.println(radx);

display.print("Y:");

display.println(rady);

display.print("Z:");

display.println(radz);

display.display();

}