BangleApps/apps/coretemp/coretemp.js

// Simply listen for core events and show data

//var btm = g.getHeight() - 1;
var px = g.getWidth() / 2;

// Dark or light logo
var col = (process.env.HWVERSION == 1) ? 65535 : 0;

var corelogo = {
  width : 146,
  height : 48,
  bpp : 4,
  transparent : 0,
  palette : new Uint16Array([ col, col, 2854, 1419 ]),
  buffer :
      require("heatshrink")
          .decompress(atob(
              "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"))
};

function onCore(c) {
  // Large or small font
  var sz = ((process.env.HWVERSION == 1) ? 3 : 2);

  g.setFontAlign(0, 0);
  g.clearRect(0, 32 + 48, g.getWidth(), 32 + 48 + 24 * 4);
  g.setColor(g.theme.dark ? "#CCC" : "#333");  // gray
  g.setFont("6x8", sz).drawString(
      "Core: " + ((c.core < 327) ? (c.core + c.unit) : 'n/a'), px, 48 + 48);
  g.setFont("6x8", sz).drawString("Skin: " + c.skin + c.unit, px, 48 + 48 + 24);
}

// Background task will activate once settings are enabled.
function enableSensor() {
  settings = require("Storage").readJSON("coretemp.json", 1) || {};

  if (!settings.enabled) {
    settings.enabled = true;
    require("Storage").write("coretemp.json", settings);

    drawBackground("Waiting for\ndata...");
  }
}

function drawBackground(message) {
  g.clear();
  Bangle.loadWidgets();
  Bangle.drawWidgets();
  g.reset().setFont("6x8", 2).setFontAlign(0, 0);
  g.drawImage(corelogo, px - 146 / 2, 30);
  g.drawString(message, g.getWidth() / 2, g.getHeight() / 2 + 16);
}

Bangle.on('CoreTemp', onCore);

settings = require("Storage").readJSON("coretemp.json", 1) || {};

if (!settings.enabled) {
  drawBackground("Sensor off\nBTN" +
                 ((process.env.HWVERSION == 1) ? '2' : '1') + " to enable");
} else {
  drawBackground("Waiting for\ndata...");
}

setWatch(() => { enableSensor(); }, (process.env.HWVERSION == 1) ? BTN2 : BTN1,
         {repeat : false});