espruino-graphics.js

var SPI2 = new SPI();

SPI2.setup({mosi:  NodeMCU.D7 , sck: NodeMCU.D8 });

var disp = require("MAX7219").connect(SPI2, NodeMCU.D5, 4 /* 4 chained devices */);

disp.intensity(0);


var g = Graphics.createArrayBuffer(32, 8, 1);


require("Font6x8").add(Graphics);
g.setFont6x8();


g.flip = function() { disp.raw(g.buffer); }; // To send to the display

g.drawString("Hello");
g.flip(); // update what's on the display


function clearAll(){
  
  g.clear();
  
  g.flip();

}

function write(string){

  g.clear();
  
  g.drawString(string , (g.getWidth()-g.stringWidth( string )) / 2 );
  
  g.flip();

}