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<h1>src/module/Max7219.js <small>File</small></h1>
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<pre class="prettyprint linenums">
+(function (global, factory) {
if (typeof exports === 'undefined') {
factory(global.webduino || {});
} else {
module.exports = factory;
}
}(this, function (scope) {
'use strict';
var Module = scope.Module,
BoardEvent = scope.BoardEvent,
proto;
/**
* The Max7219 Class.
*
* MAX7219 is compact, serial input/output
* common-cathode display drivers that interface
* microprocessors (µPs) to 7-segment numeric LED displays
* of up to 8 digits, bar-graph displays, or 64 individual LEDs.
*
* @namespace webduino.module
* @class Max7219
* @constructor
* @param {webduino.Board} board The board that the Max7219 is attached to.
* @param {Integer} din Pin number of DIn (Data In).
* @param {Integer} cs Pin number of LOAD/CS.
* @param {Integer} clk Pin number of CLK.
* @extends webduino.Module
*/
function Max7219(board, din, cs, clk) {
Module.call(this);
this._board = board;
this._din = din;
this._cs = cs;
this._clk = clk;
this._intensity = 0;
this._data = 'ffffffffffffffff';
this._board.on(BoardEvent.BEFOREDISCONNECT, this.animateStop.bind(this));
this._board.on(BoardEvent.ERROR, this.animateStop.bind(this));
this._board.send([0xf0, 4, 8, 0, din.number, cs.number, clk.number, 0xf7]);
}
Max7219.prototype = proto = Object.create(Module.prototype, {
constructor: {
value: Max7219
},
/**
* The intensity indicating brightness of Max7219.
*
* @attribute intensity
* @type {Integer} Value of brightness (0~15).
*/
intensity: {
get: function () {
return this._intensity;
},
set: function (val) {
if (val >= 0 && val <= 15) {
this._board.send([0xf0, 4, 8, 3, val, 0xf7]);
this._intensity = val;
}
}
}
});
/**
* Show pattern LED matrix.
*
* @method on
* @param {String} data Pattern to display.
* @example
* matrix.on("0000000000000000");
*/
proto.on = function (data) {
if (data) {
this._data = data;
} else {
data = this._data;
}
if (!data) {
return false;
}
var sendData = [0xf0, 4, 8, 1];
var i = 0;
var len = data.length;
for (; i < len; i++) {
sendData.push(data.charCodeAt(i));
}
sendData.push(0xf7);
this._board.send(sendData);
};
/**
* Clear pattern on LED matrix.
*
* @method off
*/
proto.off = function () {
this._board.send([0xf0, 4, 8, 2, 0xf7]);
};
/**
* Display animated pattern.
*
* @method animate
* @param {Array} data Array of patterns.
* @param {Integer} times Delay time (in microsecond) between patterns.
* @param {Integer} duration Duration of animation.
* @param {Function} callback Callback after animation.
* @example
* var data = ["080c0effff0e0c08", "387cfefe82443800", "40e0e0e07f030604"];
* matrix.on("0000000000000000");
* matrix.animate(data, 100);
*/
proto.animate = function (data, times, duration, callback) {
var p = 0;
if (typeof arguments[arguments.length - 1] === 'function') {
callback = arguments[arguments.length - 1];
} else {
callback = function () {};
}
var run = function () {
this.on(data[p++ % data.length]);
this._timer = setTimeout(run, times);
}.bind(this);
var stop = function () {
clearTimeout(this._timer);
callback();
}.bind(this);
if (times && times > 0) {
run();
}
if (duration && duration > 0) {
this._timerDuration = setTimeout(stop, duration);
}
};
/**
* Stop displaying animated pattern.
*
* @method animateStop
*/
proto.animateStop = function () {
clearTimeout(this._timer);
clearTimeout(this._timerDuration);
};
scope.module.Max7219 = Max7219;
}));
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