Tilt Sensor Example for M5Atom Matrix

M5AtomTilt.ino

/**
 * @file M5AtomTilt.ino
 * @author botamochi6277 
 * @brief tilt sensor application fot M5Atom Matrix
 * acc value is unstable. I recommend to add filters.
 * @version 0.1
 * @date 2020-08-30
 * 
 * @licence MIT LICENCE
 * 
 */
#include "M5Atom.h"

bool IMU6886Flag = false;
float accX = 0, accY = 0, accZ = 0;
int range = 500;

void setup()
{
    M5.begin(true, false, true);
    if (M5.IMU.Init() != 0)
    {
        IMU6886Flag = false;
    }
    else
    {
        IMU6886Flag = true;
    }
}

void loop()
{

    if (IMU6886Flag == true)
    {
        M5.IMU.getAccelData(&accX, &accY, &accZ);
        // convert acc value to matrix position with arduino map func.
        int x = map(int(accX * 1000), -range, range, 0, 4);
        x = constrain(x, 0, 4); // limit value
        int y = map(int(accY * 1000), -range, range, 0, 4);
        y = constrain(y, 0, 4);

        // display
        M5.dis.clear();
        M5.dis.drawpix(x, y, CRGB::White);
        delay(500);
        M5.update();

        Serial.printf("%.2f,%.2f,%.2f mg\r\n", accX * 1000, accY * 1000, accZ * 1000);
    }
    else
    {
        // Fail to initialize IMU (Maybe)
        M5.dis.clear();
        M5.dis.drawpix(2, 2, CRGB::Red);
        delay(500);
        M5.update();
    }
}