BangleApps/apps/hid-keyboard.js

var storage = require('Storage');

const settings = storage.readJSON('@setting') || { HID: false };

var sendHid, next, prev, toggle, up, down, profile;

if (settings.HID) {
  profile = 'Keyboard';
  sendHid = function (code, cb) {
    try {
      NRF.sendHIDReport([2,0,0,code,0,0,0,0,0], () => {
        NRF.sendHIDReport([2,0,0,0,0,0,0,0,0], () => {
          if (cb) cb();
        });
      });
    } catch(e) {
      print(e);
    }
  };
  next = function (cb) { sendHid(0x4f, cb); };
  prev = function (cb) { sendHid(0x50, cb); };
  toggle = function (cb) { sendHid(0x2c, cb); };
  up = function (cb) {sendHid(0x52, cb); };
  down = function (cb) { sendHid(0x51, cb); };
} else {
  E.showMessage('HID disabled');
  setTimeout(load, 1000);
}

function drawApp() {
  g.clear();
  g.setFont("6x8",2);
  g.setFontAlign(0,0);
  g.drawString(profile, 120, 120);
  const d = g.getWidth() - 18;

  function c(a) {
    return {
      width: 8,
      height: a.length,
      bpp: 1,
      buffer: (new Uint8Array(a)).buffer
    };
  }

  g.drawImage(c([16,56,124,254,16,16,16,16]),d,40);
  g.drawImage(c([16,16,16,16,254,124,56,16]),d,194);
  g.drawImage(c([0,8,12,14,255,14,12,8]),d,116);
}

if (next) {

  if (settings.HIDGestures) {
    Bangle.on('aiGestures', (v) => {
      switch (v) {
        case 'swipeleft':
          E.showMessage('next');
          setTimeout(drawApp, 1000);
          next(() => {});
          break;
        case 'swiperight':
          E.showMessage('prev');
          setTimeout(drawApp, 1000);
          prev(() => {});
          break;
      }
    });
  }

  setWatch(function(e) {
    var len = e.time - e.lastTime;
    if (len > 0.3 && len < 0.9) {
      E.showMessage('prev');
      setTimeout(drawApp, 1000);
      prev(() => {});
    } else {
      E.showMessage('up');
      setTimeout(drawApp, 1000);
      up(() => {});
    }
  }, BTN1, { edge:"falling",repeat:true,debounce:50});

  setWatch(function(e) {
    var len = e.time - e.lastTime;
    if (len > 0.3 && len < 0.9) {
      E.showMessage('next');
      setTimeout(drawApp, 1000);
      next(() => {});
    } else {
      E.showMessage('down');
      setTimeout(drawApp, 1000);
      down(() => {});
    }
  }, BTN3, { edge:"falling",repeat:true,debounce:50});

  setWatch(function(e) {
    E.showMessage('toggle')
    setTimeout(drawApp, 1000);
    toggle();
  }, BTN2, { edge:"falling",repeat:true,debounce:50});

  drawApp();
}