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Digital Compass
/**
* Digital Compass
* MAG3110 Demo
*
* Author: Shawn Hymel (SparkFun Electronics)
* Based on SparkFun_MAG3110_Calibrated.ino by George B.
* Date: July 25, 2017
*
* Connect MAG3110 to MicroView. If "Calibrating" appears,
* slowly rotate the MAG3110 sensor 360 degrees while flat on
* a surface (i.e. Z axis is pointing up or down).
*
* After, a heading will appear:
* 0 deg = North
* 90 deg = Easth
* 180/-180 deg = South
* -90 deg = West
*
* This code is beerware; if you see me (or any other SparkFun
* employee) at the local, and you've found our code helpful,
* please buy us a round!
* Distributed as-is; no warranty is given.
*/
#include <MicroView.h>
#include <SparkFun_MAG3110.h>
MAG3110 mag = MAG3110();
void setup() {
uView.begin();
uView.clear(ALL);
uView.display();
mag.initialize();
}
void loop() {
// Clear display
uView.clear(PAGE);
uView.setCursor(0, 0);
// If we are calibrated, display heading
if ( mag.isCalibrated() ) {
uView.setFontType(1);
uView.print(mag.readHeading());
delay(100);
} else {
// Tell user we are calibrating
uView.setFontType(0);
uView.println("Calibratin");
uView.print("Rotate me!");
// Calibrate or enter into calibration mode
if ( mag.isCalibrating() ) {
mag.calibrate();
} else {
mag.enterCalMode();
}
delay(10);
}
// Draw!
uView.display();
}
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