Espruino Pico

colors.js

SPI2.setup({baud:3200000,mosi:B15});

var setColor = function(arr){
  SPI2.send4bit(arr, 0b0001, 0b0011);
};

setColor([255,0,0, 0,255,0, 0,0,255]);

/*
var ledCount = 3;
var colors = new Uint8ClampedArray(ledCount*3);
setInterval(function(){
  var ix = 0;
  for (var i=0;i<ledCount;i++) {
    colors[ix++] = Math.random()*255;
    colors[ix++] = Math.random()*255;
    colors[ix++] = Math.random()*255;
  }
  setColor(colors);
}, 500);
*/

experiments.js

A5.write(0); // GND
A7.write(1); // VCC
//A6.write(1);

var spi = new SPI();
spi.setup({ sck:B1, mosi:B10 });

var updateDisplay = function(displayText){
  g.clear();
  g.drawString(displayText,0,0);
  g.drawLine(0,10,84,10);
  g.flip();

  //setTimeout("A6.write(0);console.log('done');", 500);
  //console.log('g: '+Object.keys(g));
};

var displayText = "Hello";

var g = require("PCD8544").connect(spi,B13,B14,B15, function() {
  console.log('hello world...');
  updateDisplay("Hello");
});

var btnCount = 0;
var onBtn = function(){
  console.log('btn pressed');
  btnCount++;
  updateDisplay("count: "+btnCount);
};
setWatch(onBtn, BTN, {repeat: true, edge: "rising", debounce: 50});


pinMode(B3,"input_pulldown"); // enable the pull-down resistor

var on = false;
var shakes = 0;
function shaken() {
  if (on) return; // if we haven't timed out, ignore this
  // otherwise, turn the light on
  on = true;
  digitalWrite(LED1, on);
  // count shakes
  shakes++;
  console.log("Shaken "+shakes+" times");
  updateDisplay("shaken "+shakes+" times");
  // now set a timeout to turn it off after 200ms = 1/5 second
  setTimeout(function() {
    on = false;
    digitalWrite(LED1, on);
  }, 200);
}
// Now 'watch' B3 for shakes
setWatch(shaken, B3, {repeat:true, edge:"rising"});

experiments2.js

A5.write(0); // GND
A7.write(1); // VCC
//A6.write(1);

var initialised = false;
var spi;
var g;


var draw = function(usage) {
  if (!initialised || usage===undefined) {
    return;
  }

  usage = parseFloat(usage.toString().replace(",",".")); // deal with numbers in the format '1,23'
  usage = usage % 100;

  g.clear();
  g.drawString("CPU Usage: "+usage+"%");

  // draw 'needle'
  var ang = Math.PI*usage/100;
  g.drawLine(42,47,42-28*Math.cos(ang), 47-Math.sin(ang)*28);

  // draw labels
  for (var i=0;i<=100;i+=20) {
    ang = Math.PI*i/100;
    g.drawString(i, 42-36*Math.cos(ang)-(g.stringWidth(i)/2), 40-Math.sin(ang)*30);
  }

  // draw markings
  for (i=0;i<=100;i+=5) {
    ang = Math.PI*i/100;
    g.setPixel(42-30*Math.cos(ang), 47-Math.sin(ang)*30);
  }

  g.flip();
};

var initSPI = function(){
  console.log('initSPI...');
  spi = new SPI();
  spi.setup({ sck:B1, mosi:B10 });
};

var initGraphics = function(){
  console.log('initGraphics...');
  g = require("PCD8544").connect(spi,B13,B14,B15, function() {
    initialised = true;
    console.log('and now call "draw(42);"');
//    updateDisplay("Hello");
    draw(10);
  });
};

var updateDisplay = function(displayText){
  g.clear();
  g.drawString(displayText,0,0);
  g.drawLine(0,10,84,10);
  g.flip();

  //setTimeout("A6.write(0);console.log('done');", 500);
  //console.log('g: '+Object.keys(g));
};

initSPI();
initGraphics();

var btnCount = 90;
var onBtn = function(){
  console.log('btn pressed ' + btnCount + ' times.');
  btnCount++;
  draw(btnCount);
};
setWatch(onBtn, BTN, {repeat: true, edge: "rising", debounce: 50});
 
function onInit_() {
  initSPI();
  initGraphics();
}