WIP - Puck.js reading CSC (cycling speed cadence) BLE sensor to replace bike computer head unit with Puck.js or (later) Pixl.js

Hi Gordon, thanks a lot!

The switch/break error seems fixed; now something creeped in giving me

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         |_| espruino.com
 1v99 (c) 2018 G.Williams
>setDisplayMode:  menu
Uncaught Error: Cannot read property 'draw' of undefined
 at line 143 col 20
           pixlmenu.draw();
                   ^
in function "setDisplayMode" called from line 115 col 24
  setDisplayMode("menu");
                       ^
in function "onInit" called from line 1 col 8
onInit();
       ^

(also not working if renaming pixlmenu back to "m", as I had in my code before).
This destroys the larger menu font you helped me with yesterday.

This being the code right now:

var actual_menu, gatt;
var last_wheel_event_time = 0, actual_wheel_event_time;
var last_cumulative_wheel_revolutions = 0, actual_cumulative_wheel_revolutions = 0, track_cumulative_revolutions = 0;
var delta_revolutions, delta_event_time, timer = -1;
var wheel_circumference = 2340;
var delta_time_in_ms, connected = false;

Pixl._menu = Pixl.menu; //Bug Fix von Gordon, s. Forum
Pixl.menu = function(m) { Pixl._menu(m); }; //Bug Fix

function connect() {
  print("Starting scan...");
  g.clear();
  var s = "Connecting...";
  g.drawString(s ,0 ,0); g.flip();
  try {
  NRF.requestDevice({ timeout:20000, filters: [{ namePrefix: 'Wahoo' }] }).then(function(device) {
  console.log(device);
  return device.gatt.connect();
  }).then(function(gatt_object) {
    gatt = gatt_object;
    s = "Looking for service...";
    g.clear(); g.drawString(s ,0 ,0); g.flip();
    return gatt.getPrimaryService("1816");
    }).then(function(service) {
      s = "Looking for char...";
      g.clear(); g.drawString(s ,0 ,0); g.flip();
      return service.getCharacteristic("0x2A5B");
    }).then(function(characteristic) {
      characteristic.on('characteristicvaluechanged', OnNotify);
      return characteristic.startNotifications();
      }).then(function() {
        connected = true;
        setDisplayMode("livedata");
        console.log("Done!");
        // Then call gatt.disconnect(); if/when you want to disconnect
        });
  } catch(error) {
      print("Sensor not found", error);
      g.clear(); g.drawString("No sensor found..." ,0 ,0); g.flip();
    }
}

function disconnect() {
...
}

function OnNotify(event) {
    ...
}

var mainmenu = {
  "" : {
    "title" : "-- Main Menu --",
    "fontHeight" : 10
  },

  "Connect" : function () { setDisplayMode("connecting"); },
  "Disconnect" : function () { disconnect(); },
  "Live Data" : function() {setDisplayMode("livedata"); },
  "New Track" : function () {},
  "Toggle Backlight" : function() { LED1.toggle(); },
  "-> Settings" : function () {Pixl.menu(SettingsMenu); },
  //"Exit" : function() { Pixl.menu(); },
};

var SettingsMenu = {
  "" : {
    "title" : "-- Settings --",
    "fontHeight" : 10
  },
  "Set Wheel Circumference" : undefined, // do nothing
  "Set Total Distance Counter" : undefined, // do nothing
  "< Back" : function() { Pixl.menu(mainmenu); },
};

function showLiveData() {
 
}

function onInit () {
  require("Font8x12").add(Graphics);
  setDisplayMode("menu");
  setWatch(function () { setDisplayMode("menu"); }, BTN2, {repeat:true, debounce:50});
}

function setDisplayMode(displaymode) {
 print("setDisplayMode: ", displaymode);
 switch (displaymode) {
         case "switchToConnected":
           Pixl.menu();
           break;
         case "connecting":
           if (timer!==-1) {clearInterval(timer); timer = -1;}
           Pixl.menu();
           connect();
           break;
         case "livedata":
           print("livedata");
           Pixl.menu();
           if (timer==-1) {
             print("Set timer"); 
             timer = setInterval( function () {showLiveData(); }, 2000); 
             print("timer = ", timer);
           }
           break;
         case "menu":
           if (timer!==-1) {clearInterval(timer); timer = -1;}
           pixlmenu=Pixl.menu(mainmenu);
           g.setFont8x12();
           pixlmenu.draw();
           }
}

onInit();