LED Panel with 64x32 Leds controlled by Arduino board

Software with some demos, including some special commands for high speed.

require("Font8x16").add(Graphics);
require("Font6x8").add(Graphics);

function Led64x32(){
  var me = this;
  var Pen;  //pin Enable
  var sfnc,dfnc;  // bound functions to shift data and set address
  var ledBuf;//graphics.buffer for LED
  var arr; //array of drawing functions
  var boardDur; //refresh time for panel in mS
  var tmr; //interval timer for refresh 
  me.init = function(board){
    switch(board){
      case "ESP32":
        initPins(D2,D16,D4,D17,D15,D27, D5,D18,D19,D21, D26,D22,D25);
        boarDur = 20;
        break;
      case "Espruino":
        initPins(B3,B5,B4,B6,C11,C10,B7,C9,B8,C8­,C6,B9,C12);
        boardDur = 10;
        break;
      default: console.log(board + " not supported (yet?)");
    }
    return initGraphic();
  };
  me.stop = function(){if(tmr) clearInterval(tmr);};
  function initPins(R1,R2,B1,B2,G1,G2,A,B,C,D,Latch­,Clock,Enable){
    Pen = Enable;
    sfnc = shiftOut.bind(null,[R2,G2,B2,undefined,R­1,G1,B1],{clk:Clock});
    dfnc = digitalWrite.bind(null,[Enable,Latch,Lat­ch,D,C,B,A,Enable]);
  }
  function initGraphic(){
    gr = Graphics.createArrayBuffer(64,32,4,{inte­rleavex:true});
    ledBuf = gr.buffer;
    createFuncArr();
    return gr;
  }
  function createFuncArr(){
    arr = [];
    arr.push({callback:Pen.reset.bind(Pen)})­;
    for(i = 0; i < 16; i++){
      arr.push(new Uint8Array(ledBuf,i*64,64));
      arr.push({callback:dfnc.bind(null,33|i<<­1)});
    }
    arr.push({callback:Pen.set.bind(Pen)});
  }
  me.start = function(){
    tmr = setInterval(function(){
      sfnc(arr);
    },boardDur);
  };
  me.frame = function(c){
    me.clear();
    if(!c) c = 7;
    grf.setColor(c);
    grf.drawRect(0,0,63,31);
    grf.drawRect(1,1,62,30);
  };
  me.clear = function(c){
    clearInterval();
    grf.setBgColor(0);
    grf.clear();
  };
}
var lf = new Led64x32();
var grf = lf.init("Espruino");
//Some demos
function color(col){
  clearInterval();
  if(!col) col = 0;
  grf.setBgColor(col);
  grf.clear();
  lf.start();
}
function graph(){
  clearInterval();
  var barh = 5;
  grf.setBgColor(6);
  grf.clear();
  grf.setColor(2);
  grf.fillRect(5,12,50,25);
  grf.setColor(4);
  grf.fillRect(10,14,40,20);
  grf.fillRect(10,0,40,0);
  grf.setColor(7);
  grf.drawRect(0,31,5,5);
  lf.start();
  setInterval(function(){
    barh++; if(barh>24) barh = 1;
    grf.setColor(0);
    grf.fillRect(1,30,4,6);
    grf.setColor(1);
    grf.fillRect(1,30,4,30 - barh);
  },200);
}
function xmas(){
  var pnt = 0;
  var px = [[10,10],[25,20],[30,15],[40,14]];
  function flicker(){
    grf.setPixel(px[pnt][0],px[pnt][1],2);
    pnt++;if(pnt>3)pnt = 0;
    grf.setPixel(px[pnt][0],px[pnt][1],7);
  }
  lf.frame(7);
  grf.setColor(2);
  grf.fillPoly([1,1,1,31,30,16,1,1]);
  grf.fillPoly([15,3,15,28,40,16,15,3]);
  grf.fillPoly([28,6,28,25,50,16,28,6]);
  grf.setColor(7);
  grf.drawLine(6,2,8,2);
  grf.drawLine(6,30,8,30);
  lf.start();
  setInterval(function(){flicker();},300);­
}
function txt(t,c){
  if(!t) t = "Open";
  if(!c) c = 2;
  var cbg = 7;
  lf.frame(cbg);
  grf.setColor(cbg);
  grf.drawEllipse(2,2,62,30);
  grf.setFont8x16();
  grf.setColor(c);
  grf.drawString(t,36 - grf.stringWidth(t) / 2,7);
  lf.start();
  setInterval(function(){
    cbg--;if(cbg<1) cbg=7;
    grf.setColor(cbg);grf.drawEllipse(2,2,62­,30);
    grf.setColor(8 - cbg);
    grf.drawString(t,36 - grf.stringWidth(t) / 2,7);
  },500);
}
function magic(){
  var col = 1;radius = 15;
  clearInterval();
  grf.setBgColor(0);
  grf.clear();
  lf.start();
  setInterval(function(){
    col++;
    if(col>7) col = 1;
    radius--;
    if(radius < 3){
      radius = 15;
      grf.setColor(0);
      grf.fillCircle(30,15,15);
    }
    grf.setColor(col);
    grf.fillCircle(30,15,radius);
  },100);
}
function mondrinator(){
  var rndCol = function(){ return Math.random() * 6;};
  var rndBorder = function(){ return 1 + Math.random() * 7;};
  var rndRect = function(){ return Math.random() * 4;};
  clearInterval();
  lf.start();
  function showNext(){
    var right,left,top,bottom,rectId;
    grf.setBgColor(7);grf.clear();
    grf.setColor(rndCol());left = rndBorder();grf.drawLine(left,0,left,31)­;
    grf.setColor(rndCol());right = rndBorder();grf.drawLine(63-right,0,63-r­ight,31);
    grf.setColor(rndCol());top = rndBorder();grf.drawLine(0,top,63,top);
    grf.setColor(rndCol());bottom = rndBorder();grf.drawLine(0,31-bottom,63,­31-bottom);
    rectId = parseInt(rndRect());grf.setColor(rndCol(­));
    switch(rectId){
      case 0: grf.fillRect(0,0,left - 1,top - 1);break;
      case 1: grf.fillRect(64-right,0,63,top - 1);break;
      case 2: grf.fillRect(0,32 - bottom,left-1,31);break;
      case 3: grf.fillRect(64-right,31,63,32 - bottom);break;
    }
    setTimeout(function(){showNext();},2000)­;
  }
  setTimeout(function(){showNext();},2000)­;
}
function pie(){
  var i,last;
  lf.clear();
  last = 0;
  centerX = 45; centerY = 16;
  var data = [[20,1,"Apple"],[30,2,"Beef"],[40,4,"Bee­r"],[10,6,"Pills"]];
  function drawPie(pnt){
    grf.setColor(7);
    grf.drawLine(0,0,0,31);
    grf.drawLine(1,0,1,31);
    var i,dt = data[pnt];
    var polyData = [centerX,centerY];
    var s = Math.PI * last / 100;
    var x = centerX + Math.round(Math.cos(s) * 15);
    var y = centerY + Math.round(Math.sin(s) * 15);
    polyData.push(x); polyData.push(y);
    for(i = 0; i < 10; i++){
      last += dt[0] / 10;
      s = Math.PI * (last + dt[0] / 10 * i) / 100;
      x = centerX + Math.round(Math.cos(s) * 15);
      y = centerY + Math.round(Math.sin(s) * 15);
      polyData.push(x);polyData.push(y);
    }
    last += dt[0];
    grf.setColor(dt[1]);
    grf.fillPoly(polyData,true);
  }
  function drawText(pnt){
    var dt = data[pnt];
    grf.setFont6x8();
    grf.setColor(dt[1]);
    grf.drawString(dt[2],4,pnt * 8);
  }
  for(i = 0; i < data.length;i++){
    drawPie(i);
    drawText(i);
  }
  lf.start();
}