Takehisa Oneta / Mbed 2 deprecated TinyJS

TinyJS on mbed. TinyJS is very simple JavaScript engine.

Dependencies:   mbed

TinyJS on mbed

what's this ?

TinyJS is an extremely simple (under than 2000 lines) JavaScript interpreter engine.
I ported on mbed. but it restrict any features.
TinyJS project is https://github.com/gfwilliams/tiny-js

TinyJSは2000行以下で書かれた非常に小さいJavaScriptインタプリタエンジンです。
これをmbedに移植してみました。(ただし、いろいろ制限があります)
本家はこちら。 https://github.com/gfwilliams/tiny-js

how to use

You must use on serial terminal application by mbed serial USB.
baud is 57600bps
USBシリアルとして、ターミナルソフトを接続するとコンソールが表示されます。
ボーレートは57600bpsになってます。

functions

functions for mbed.
mbed用関数

• mbed.DigitalIn(pinName, mode)
• mbed.DigitalOut(pinName, val)
• mbed.AnalogIn(pinName)
• mbed.AnalogOut(pinName, val)
• mbed.InterruptIn(pinName, edge, mode, callback)
• mbed.TimerStart()
• mbed.TimerStop()
• mbed.TimerReset()
• mbed.TimerRead()
• mbed.Timeout(callback, t)

• mbed.wait(s)
• mbed.memfree()

sample JavaScript codes

mbed.DigitalOut('LED1', 1);
mbed.DigitalOut('LED2', 0);
mbed.DigitalOut('LED3', 1);
mbed.DigitalOut('LED4', 0);

LED1 = On, LED2=Off, LED3=On, ED4=Off
LED1 = 点灯、LED2=消灯、LED3=点灯、LED4=消灯

print(mbed.DigitalIn('p5', 'PullUp'));

p5 is pull up, read, and print on console.
p5をPullUpして読みプリントする。

mbed.AnalogOut('p18', 0.8);

p18 is analog output, value is 0.8.
p18を 値0.8でアナログ出力する。

print(mbed.AnalogIn('p20'));

p20 is read analog voltage, and print on console.
p20をアナログ入力しプリントする。

var led1 = 0;
mbed.InterruptIn('p5', 'fall', 'PullUp', function() {led1 = !led1; mbed.DigitalOut('LED1', led1);});

Interrupt on p5, and ON/OFF does LED1.
p5で割り込んでLED1をON/OFFする。

mbed.Timeout(function() {mbed.DigitalOut('LED1', 1);mbed.wait(3);mbed.DigitalOut('LED1', 0);}, 4);

LED1=on when wait for 4 seconds. and LED1=off for 3 seconds later.
LED1を4秒待って点灯して3秒後に消灯する。

print(mbed.memfree());

This prints the number of bytes of the remainder memory on mbed where TinyJS is usable.
これはTinyJSが使えるmbed上での残りメモリのバイト数をプリントアウトする。

blinker = function() {var led = 0; mbed.Timeout(function() {led = !led; mbed.DigitalOut('LED1', led);blinker();}, 0.5);};
blinker();

LED Blinker by Timeout.
Timeoutを使ったLチカ。

restrictions

• There is very little available memory. (Less than 9kbytes on LPC1768)
• Registration of InterruptIn is 4 limit.
• The loop to 8,192 times.
• The built-in functions (general JavaScript functions) that TinyJS prepares for for securing of memory is not included.

more, more, more ....

制限事項

• 利用できるメモリは非常に少ない。(LPC1768で9kbytes以下)
• InterruptInで登録できる割り込みは4つまで。4つを超えると1つめから順番に削除される。
• ループは8192回まで。
• メモリ確保のためTinyJSが用意している組み込み関数(一般的なJavaScript関数)は含まれない。

他、多数....

sample movies

http://www.youtube.com/watch?v=ARp0DK70JGM
http://www.youtube.com/watch?v=UOZQ4eEC4xA

/*
 * TinyJS
 *
 * A single-file Javascript-alike engine
 *
 * Authored By Gordon Williams <gw@pur3.co.uk>
 *
 * Copyright (C) 2009 Pur3 Ltd
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is furnished to do
 * so, subject to the following conditions:

 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#ifndef TINYJS_FUNCTIONS_H
#define TINYJS_FUNCTIONS_H

#include "TinyJS.h"

/// Register useful functions with the TinyJS interpreter
extern void registerFunctions(CTinyJS *tinyJS);

#endif