JavaScript API¶

Objects and methods detailed below

Global¶

eval¶

Evaluate the given String

Example¶

var two = eval('1+1');

Parameter Name	Description
str	String to be evaluated

toInteger¶

Convert the given object to an integer value

Example¶

var n = toInteger('5') + 1;

Parameter Name	Description
object	Object to be converted

isNaN¶

Tests if the object is NaN

Example¶

isNaN(1); // false
isNaN('abc'); // true

Parameter Name	Description
number	Object to be tested for NaNity

meminfo¶

Prints platform dependent memory information

Example¶

meminfo()

describe¶

Print object description to the console

Example¶

describe(describe);

Parameter Name	Description
object	Object to describe

compile¶

Compiles a function for faster execution

Example¶

var f = compile(function() { return 1 + 1; });

Parameter Name	Description
function	function_to_be_compiled

objGraph¶

Create a DOT graph of allocated objects

Example¶

objGraph()

File System¶

readFileSync¶

Synchronously reads the entire contents of a file

Example¶

var s = fs.readFileSync('FAT/file.txt');

Parameter Name	Description
path	File Path

writeFileSync¶

Synchronously writes the entire contents of a file

Example¶

fs.writeFileSync('FAT/file.txt', 'hello world!');

Parameter Name	Description
path	File Path
data	String to be written to file

readdirSync¶

Synchronously reads the directory listing of a path

Example¶

var s = fs.readdirSync('FAT/');

Parameter Name	Description
path	Directory Path

Array¶

Array (constructor)¶

Array Constructor

Example¶

var a = new Array(5);
var b = new Array(1, 2, 3);

Para mete r Name	Desc ript ion
Leng th or [ite m1, item 2, ..]	Numb er of entr ies to Allo cate or comm a sepa rate d list of item s to push to the new arra y

push¶

The arguments are appended to the end of the array, in the order in which they appear

Example¶

var a = [];
a.push(1);

Parameter Name	Description
item1 [, item2 [, ...] ]	object[s] to be added

pop¶

The last element of the array is removed from the array and returned

Example¶

var a = [2, 1];
var one = a.pop();

forEach¶

Calls cb once for each element present in the array, in ascending order

Example¶

var a = [1, 2, 3];
a.forEach(function(value, k, obj) { console.log(value + ' [' + k + '] ' + ' @ ' + obj); });

Para mete r Name	Desc ript ion
cb	func tion that acce pts thre e argu ment s:Va lue of the elem ent, Inde x of the elem ent, The obje ct bein g trav erse d
this	[opt iona l] if prov ided , used as the ‘thi s’ valu e for each invo cati on of ‘cb’ . If not prov ided , ‘und efin ed’ is used

indexOf¶

Searches for searchElement in the elements of the array

Example¶

var a = [1, 2, 3];
var one = a.indexOf(2);

Parameter Name	Description
searchElement	Object to search for
fromIndex	[optional] start search index

join¶

Joins the string coversions of the elements of the array separated by occurrences of the separator

Example¶

var a = [1, 2, 3];
debug.assert(a.join('-'), '1-2-3');

Parameter Name	Description
separator	[optional] string. If not provided, a single comma is used

map¶

Calls cb once for each element present in the array, in ascending order, and constructs a new Array from the results

Example¶

var a = [1, 2, 3];
var b = a.map(function(value, k, obj) { return value + 1 });
debug.assert(b, [2, 3, 4]);

Para mete r Name	Desc ript ion
cb	func tion that acce pts thre e argu ment s:Va lue of the elem ent, Inde x of the elem ent, The obje ct bein g trav erse d
this	[opt iona l] if prov ided , used as the ‘thi s’ valu e for each invo cati on of ‘cb’ . If not prov ided , ‘und efin ed’ is used

slice¶

Creates a new array with elements from the specified array starting from index ‘start’ up to index ‘end’

Example¶

[1, 2, 3].slice(1); // [2, 3]

Parameter Name	Description
start	Element index to start from, may be undefined
end	Last element index (not inclusive), may be undefined

sort¶

Sorts the array elements

Example¶

[3, 1, 2].sort(); // [1, 2, 3]

Para mete r Name	Desc ript ion
comp aref n	Func tion rece ivin g (x, y) and retu rns a nega tive valu e if x < y, zero if x = y or a posi tive valu e if x > y

filter¶

Calls cb once for each element present in the array, in ascending order, and constructs a new Array from any element for which cb returned ‘true’

Example¶

var a = [1, 2, 3];
var b = a.filter(function(value) { return value > 1 });
b; // [2, 3]

Para mete r Name	Desc ript ion
cb	func tion that acce pts thre e argu ment s:Va lue of the elem ent, Inde x of the elem ent, The obje ct bein g trav erse d
this	[opt iona l] if prov ided , used as the ‘thi s’ valu e for each invo cati on of ‘cb’ . If not prov ided , ‘und efin ed’ is used

concat¶

Concatanates a given array with a list of items. If an item is an array itself, its members are used

Example¶

var a = [1, 2, 3];
var b = a.concat([4, 5, 6], 7); // [1, 2, 3, 4, 5, 6, 7]

Parameter Name	Description
[item1 [, item2 [, item3]]]	optional list of items to concatanate

String¶

String (constructor)¶

String Constructor

Example¶

var s = new String('hello');

Parameter Name	Description
String	String

split¶

Breaks a string into substrings based on occurences of ‘separator’

Example¶

var s = '1|2|3';
var a = s.split('|');
debug.assert(a, [ '1', '2', '3' ]);

Parameter Name	Description
separator	Delimiter

indexOf¶

Search for occurences of ‘searchString’ in a given string

Example¶

var s = 'looking for me';
var i = s.indexOf('for');
debug.assert(i, 8);

Parameter Name	Description
searchString	String to search for

substring¶

Creates a new string based on a subset of a given string

Example¶

var s = 'a big string';
var big = s.substring(2, 5);

Parameter Name	Description
start	Character position to start from
end	Character position to end with (not including

charAt¶

Creates a new string containing the character at a position

Example¶

var s = 'a string';
var a = s.charAt(0);

Parameter Name	Description
pos	Position of character

charCodeAt¶

Get the ASCII value of the character at a position

Example¶

var s = 'a string';
var ninty_seven = s.charCodeAt(0);

Parameter Name	Description
pos	Position of character

toLowerCase¶

Convert a string to lower case characters

Example¶

var s = 'Hello World';
s.toLowerCase(); // 'hello world'

toUpperCase¶

Convert a string to upper case characters

Example¶

var s = 'Hello World';
s.toUpperCase(); // 'HELLO WORLD'

Function¶

Function (constructor)¶

Function Constructor

Example¶

var f = new Function('a', 'b', 'return a+b');
console.log('1+2=' + f(1, 2));

Parameter Name	Description
[arg1, [arg2, [.. ]]]	Formal Parameter Names
Body	Function Body

call¶

Invoke function call

Example¶

function fun() { this.prop = 'prop' }
var obj = {};
fun.call(obj);
obj; // { prop : 'prop' }

Parameter Name	Description
thisArg	The ‘this’ value on function invocation
arg1, arg2, ...	[optional] arguments to pass to function

apply¶

Invoke function call

Example¶

function fun(a, b) { return a + b; }
fun.apply(undefined, [1, 2]); // 3

Parameter Name	Description
thisArg	The ‘this’ value on function invocation
argArray	[optional] Array of arguments to pass to function

bind¶

Returns a new Function object based on the current function object, but the ‘this’ value is bound to thisArg

Example¶

function fun() { return this.prop; }
var f = fun.bind({ prop : 1});
f(); // 1

Parameter Name	Description
thisArg	The ‘this’ value on function invokation

ArrayBuffer¶

ArrayBuffer (constructor)¶

ArrayBuffer Constructor

Example¶

var a = new ArrayBuffer(5);

Parameter Name	Description
Size	Number of bytes in Array Buffer

ArrayBufferView¶

Int8Array (constructor)¶

Int8Array Constructor

Example¶

var a = new Int8Array(5);

Para mete r Name	Desc ript ion
Arra y/Ar rayB uffe r/Si ze	Arra y, Arra yBuf fer or Numb er of Elem ents in a newl y crea ted Arra yBuf fer

Uint8Array (constructor)¶

Uint8Array Constructor

Example¶

var a = new Uint8Array(5);

Para mete r Name	Desc ript ion
Arra y/Ar rayB uffe r/Si ze	Arra y, Arra yBuf fer or Numb er of Elem ents in a newl y crea ted Arra yBuf fer

Int16Array (constructor)¶

Int16Array Constructor

Example¶

var a = new Int16Array(5);

Para mete r Name	Desc ript ion
Arra y/Ar rayB uffe r/Si ze	Arra y, Arra yBuf fer or Numb er of Elem ents in a newl y crea ted Arra yBuf fer

Uint16Array (constructor)¶

Uint16Array Constructor

Example¶

var a = new Uint16Array(5);

Para mete r Name	Desc ript ion
Arra y/Ar rayB uffe r/Si ze	Arra y, Arra yBuf fer or Numb er of Elem ents in a newl y crea ted Arra yBuf fer

Int32Array (constructor)¶

Int32Array Constructor

Example¶

var a = new Int32Array(5);

Para mete r Name	Desc ript ion
Arra y/Ar rayB uffe r/Si ze	Arra y, Arra yBuf fer or Numb er of Elem ents in a newl y crea ted Arra yBuf fer

Uint32Array (constructor)¶

Uint32Array Constructor

Example¶

var a = new Uint32Array(5);

Para mete r Name	Desc ript ion
Arra y/Ar rayB uffe r/Si ze	Arra y, Arra yBuf fer or Numb er of Elem ents in a newl y crea ted Arra yBuf fer

subarray¶

Return a partial typed array based on the typed arrayIf end is unspecified, the subarray contains all elements from begin to the end of the TypedArray. If either begin or end are negative, they are calculated from the end of the array

Example¶

var a = new Int8Array(16);
var b = a.subarray(1, 5);

Parameter Name	Description
begin	Start offset (inclusive)
end	(Optional) End offset (exclusive)

Object¶

Object (constructor)¶

Object Constructor

Example¶

var o = new Object(5);

toString¶

The object is converted to a string

Example¶

var a = 1;
debug.assert(a.toString(), '1');

Parameter Name	Description
radix	(optional) radix to use in conversion

on¶

Adds a listener for the specified event

Example¶

a.on('data', function() { console.log('data!'); });

Parameter Name	Description
event	event to listen on
cb	callback function called on event

emit¶

Execute each of the listeners on the event

Example¶

a.emit('data');

Parameter Name	Description
event	event to listen on

removeAllListeners¶

removes listeners on a specified event, or all events

Example¶

a.removeAllListeners('data');

Parameter Name	Description
event	(optional) event to stop listening on

listeners¶

Returns an array with listeners for the specified event

Example¶

a.listeners('data');

Parameter Name	Description
event	event for fetching listeners

debug¶

assert¶

Panic on mismatch between two objects

Example¶

debug.assert(1, 1);

Parameter Name	Description
object1	Object for comparison
object2	Object for comparison

assert_cond¶

Panic if object is false

Example¶

debug.assert_cond(1 == 1);

Parameter Name	Description
object	Object to test

assert_exception¶

Panic if calling cb() does not raise an exception

Example¶

debug.assert_exception(function() { throw 'error'; });

Parameter Name	Description
cb	function to test

dump_env¶

Dump global environment information to the console

Example¶

debug.dump_env();

Math¶

sin¶

Compute the sine of an angle

Example¶

var zero = Math.sin(Pi);

Parameter Name	Description
angle	angle in radians

asin¶

Compute the arc sine of a number

Example¶

var pi = Math.asin(1) * 2;

Parameter Name	Description
x	number

cos¶

Compute the cosine of an angle

Example¶

var one = Math.cos(0);

Parameter Name	Description
angle	angle in radians

acos¶

Compute the arc cosine of a number

Example¶

var zero = Math.acos(1);

Parameter Name	Description
x	number

tan¶

Compute the tangent of an angle

Example¶

var half =  Math.tan(0.463648);

Parameter Name	Description
angle	angle in radians

atan¶

Compute the arc tangent of a number

Example¶

var pi = Math.atan(1) * 4;

Parameter Name	Description
x	number

sqrt¶

Compute the square root of a number

Example¶

var three = Math.sqrt(9);

Parameter Name	Description
x	number

log¶

Compute the natural logarithm of a number

Example¶

var zero = Math.log(1);

Parameter Name	Description
x	number

exp¶

Compute the base-e exponent of a number

Example¶

var e = Math.exp(1);

Parameter Name	Description
x	number

floor¶

Compute the largest integral value not greater than the argument

Example¶

var three = Math.floor(3.5);

Parameter Name	Description
x	number

ceil¶

Compute the smallest integral value not less than the argument

Example¶

var three = Math.ceil(2.5);

Parameter Name	Description
x	number

round¶

Round to nearest integer, away from zero

Example¶

var three = Math.round(2.7);
var two = Math.round(2.2);

Parameter Name	Description
x	number

abs¶

Compute the absolute value of an integer

Example¶

var two = Math.abs(-2);

Parameter Name	Description
x	number

atan2¶

Compute the arc tangent of two variables

Example¶

var pi = Math.atan2(1, 1) * 4;

Parameter Name	Description
x	number
y	number

pow¶

Power function

Example¶

var hundred = Math.pow(10, 2);

Parameter Name	Description
x	number
y	number

Module¶

require¶

Searches for a module and evaluates its code

Example¶

var as = require('assert');

Parameter Name	Description
module_name	String containing module name to load

Timer¶

setTimeout¶

Schedule ‘cb’ to run in ms milliseconds

Example¶

setTimeout(function() { console.log('Timer Expired'); }, 1000);

Parameter Name	Description
cb	Callback to be run
ms	Timeout in milliseconds

setInterval¶

Schedule ‘cb’ to run periodically every ms milliseconds

Example¶

setInterval(function() { console.log('.'); }, 1000);

Parameter Name	Description
cb	Callback to be run
ms	Period in milliseconds

clearTimeout¶

Cancel timeout timer if timeout hadn’t expired

Example¶

var to = setTimeout(function() { console.log('timeout'); }, 1000);
clearTimeout(to);

Parameter Name	Description
tid	Timer ID to cancel

clearInterval¶

Cancel periodic timer

Example¶

var to = setInterval(function() { console.log('.'); }, 1000);
clearInterval(to);

Parameter Name	Description
tid	Timer ID to cancel

getTime¶

Get number of seconds since system startup

Example¶

console.log('Up for ' + getTime() + ' seconds');

Netif¶

linkStatus¶

Get link status

Example¶

var e = new ENC28J60(SPI1, GPIO_PE3, GPIO_PF4);
console.log('link status: ' + e.linkStatus ? 'connected' : 'disconnected')

MACAddrGet¶

Get Interface MAC Address

Example¶

var e = new ENC28J60(SPI1, GPIO_PE3, GPIO_PF4);
console.log(e.MACAddrGet());

IPAddrGet¶

Get Interface IP Address

Example¶

var e = new NetifINET('eth0');
console.log(e.IPAddrGet());

onPortChange¶

Calls ‘cb’ when link state has changed

Example¶

var e = new ENC28J60(SPI1, GPIO_PE3, GPIO_PF4);
e.onPortChange(function() { console.log('port state changed!'); });

Parameter Name	Description
cb	callback function called when link status has changed

IPConnect¶

Obtain IP Address

Example¶

var e = new ENC28J60(SPI1, GPIO_PE3, GPIO_PF4);
e.IPConnect();

Parameter Name	Description
cb (optional)	callback function called on IP address availablity

IPDisconnect¶

Release IP Address

Example¶

var e = new ENC28J60(SPI1, GPIO_PE3, GPIO_PF4);
e.IPDisconnect();

TCPConnect¶

Connect to a TCP IP:PORT

Example¶

var e = new NetifINET();
e.TCPIPConnect('192.168.1.10', 80, function() { console.log('connected'); });

Parameter Name	Description
ip	IP address to connect to
port	tcp port to connect to
cb	callback function called on TCP connectivity

TCPDisconnect¶

Release TCP connection

Example¶

var e = new NetifINET();
e.TCPIPConnect('192.168.1.10', 80, function() { console.log('connected'); e.TCPDisconnect() });

onTCPData¶

Calls ‘cb’ when TCP data is available

Example¶

var e = new NetifINET();
e.onTCPData(function() { console.log('TCP data ready!'); });

Para mete r Name	Desc ript ion
cb	call back func tion call ed when TCP data is avai labl e. Empt y call back remo ves the list ener

onTCPDisconnect¶

Calls ‘cb’ when TCP stream is disconnected

Example¶

var e = new NetifINET();
e.onTCPDisconnect(function() { console.log('TCP disconnected!'); });

Para mete r Name	Desc ript ion
cb	call back func tion call ed when TCP stre am is disc onne cted . Empt y call back remo ves the list ener

TCPWrite¶

Writes data to the TCP socket

Example¶

var e = new NetifINET();
e.TCPIPConnect('192.168.1.10', 80, function() { e.TCPWrite('GET / HTTP 1.0

'); });

Parameter Name	Description
data	Data (byte/array/string/typed array) to be sent

TCPRead¶

Reads data from the TCP socket

Example¶

var e = new NetifINET();
e.onTCPData(function() { console.log(n.TCPRead()); });
e.TCPIPConnect('192.168.1.10', 80, function() { e.TCPWrite('GET / HTTP 1.0

'); });

ENC28J60 (constructor)¶

ENC28J60 Ethernet Constructor

Example¶

var enc = new ENC28J60(SPI0, GPIO_PF0, GPIO_PF1);
console.log('link status: ' + enc.linkStatus() ? 'connected' : 'disconnected');

Parameter Name	Description
SPI port	SPI Port
CS	SPI Chip Select Pin
Interrupt	Interrupt Pin

ESP8266 (constructor)¶

ESP8266 Wi-Fi Constructor

Example¶

var esp = new ESP8266(function() {
esp.IPConnect(function() { console.log('connected'); });
}, UART4);

Parameter Name	Description
cb	Callback to be called when device is ready
Serial port (optional)	Serial Port

StellarisEth (constructor)¶

Stellaris Ethernet Object Constructor

Example¶

var enc = new StellarisEth();
console.log('link status: ' + enc.linkStatus() ? 'connected' : 'disconnected');

NetifINET (constructor)¶

INET Network Interface Object Constructor

Example¶

var  n = new NetifINET('eth0');
console.log('link status: ' + n.linkStatus() ? 'connected' : 'disconnected');

Parameter Name	Description
Net Device	Network Interface Name

LinuxPacketEth (constructor)¶

Linux Packet Ethernet Object Constructor

Example¶

var  n = new LinuxPacketEth('eth0');
console.log('link status: ' + n.linkStatus() ? 'connected' : 'disconnected');

Parameter Name	Description
Net Device	Linux Network Interface Name

ESP8266_WIFI (constructor)¶

ESP8266 Wi-Fi Constructor

Example¶

var esp = new ESP8266_WIFI();
esp.IPConnect();

console¶

set¶

Sets TinkerPal console to a given serial port

Example¶

console.set(new Serial(UART1));

Parameter Name	Description
serial	Serial object

log¶

Logs object to the console

Example¶

console.log('Hello World');

Parameter Name	Description
object	Object to display

Graphics¶

Graphics (constructor)¶

Graphics Constructor

Example¶

var lcd = new Dogs102x6();
var g = new Graphics(lcd);
g.stringDraw(0, 0, 'Hello World!', 0xffff);

Parameter Name	Description
Canvas	Canvas Object

stringDraw¶

Prints string on LCD

Example¶

var lcd = new Dogs102x6();
var g = new Graphics(lcd);
g.stringDraw(0, 0, 'Hello World!', 0xffff);

Parameter Name	Description
x	X coordinate
y	Y coordinate
str	String to be drawn
color	Color

circleDraw¶

Draws a circle on LCD

Example¶

var lcd = new Dogs102x6();
var g = new Graphics(lcd);
g.circleDraw(20, 20, 10, 0xffff);

Parameter Name	Description
x	X coordinate
y	Y coordinate
radius	Circle Radius
color	Color

circleFill¶

Draws a circle on LCD

Example¶

var lcd = new Dogs102x6();
var g = new Graphics(lcd);
g.circleFill(20, 20, 10, 0xffff);

Parameter Name	Description
x	X coordinate
y	Y coordinate
radius	Circle Radius
color	Color

lineDraw¶

Draws a line on LCD

Example¶

var lcd = new Dogs102x6();
var g = new Graphics(lcd);
g.lineDraw(10, 10, 20, 20, 0xffff);

Parameter Name	Description
x0	X0 coordinate
y0	Y0 coordinate
x1	X1 coordinate
y1	Y1 coordinate
color	Color

rectDraw¶

Draws a rectangle on LCD

Example¶

var lcd = new Dogs102x6();
var g = new Graphics(lcd);
g.rectDraw(10, 10, 20, 20, 0xffff);

Parameter Name	Description
x	X coordinate
y	Y coordinate
w	Width
h	Height
color	Color

roundRectDraw¶

Draws a round rectangle on LCD

Example¶

var lcd = new Dogs102x6();
var g = new Graphics(lcd);
g.roundRectDraw(10, 10, 20, 20, 4, 0xffff);

Parameter Name	Description
x	X coordinate
y	Y coordinate
w	Width
h	Height
r	Corner Radius
color	Color

roundRectFill¶

Draws a filled round rectangle on LCD

Example¶

var lcd = new Dogs102x6();
var g = new Graphics(lcd);
g.roundRectFill(10, 10, 20, 20, 4, 0xffff);

Parameter Name	Description
x	X coordinate
y	Y coordinate
w	Width
h	Height
r	Corner Radius
color	Color

rectFill¶

Draws a filled rectangle on LCD

Example¶

var lcd = new ST7735();
var g = new Graphics(lcd);
g.rectFill(10, 10, 20, 20, g.RED);

Parameter Name	Description
x	X coordinate
y	Y coordinate
w	Width
h	Height
color	Color

Canvas¶

pixelDraw¶

Draw a pixel on the screen

Example¶

var l = new ILI93XX();
l.pixelDraw(10, 10, 1);

Parameter Name	Description
x	X Coordinate
y	Y Coordinate
value	Color Value

fill¶

Fills the canvas with a color

Example¶

var l = new ILI93XX();
l.fill(0xfe);

Parameter Name	Description
value	Color Value

flip¶

Publishes stored buffer onto canvas

Example¶

var l = new SSD1306();
l.pixelDraw(1, 1, 1);
l.flip();

SSD1306 (constructor)¶

SSD1306 Constructor

Example¶

var lcd = new SSD1306();
lcd.pixelDraw(10, 10, 1);

ST7920 (constructor)¶

ST7920 Constructor

Example¶

var lcd = new ST7920();
lcd.pixelDraw(10, 10, 1);

ST7735 (constructor)¶

ST7735 Constructor

Example¶

var lcd = new ST7735();
lcd.pixelDraw(10, 10, 1);

DummyCanvas (constructor)¶

Dummy Canvas Constructor

Example¶

var lcd = new DummyCanvas();
lcd.pixelDraw(10, 10, 1);

SSD1329 (constructor)¶

SSD1329 Constructor

Example¶

var lcd = new SSD1329();
lcd.pixelDraw(10, 10, 1);

SDLScreen (constructor)¶

SDL screen Constructor

Example¶

var lcd = new SDLScreen();
lcd.pixelDraw(10, 10, 1);

ILI93XX (constructor)¶

ili93xx Constructor

Example¶

var lcd = new ILI93XX();
lcd.pixelDraw(10, 10, 1);

Dogs102x6 (constructor)¶

Dogs102x6 Constructor

Example¶

var lcd = new Dogs102x6();
lcd.pixelDraw(10, 10, 1);

PCD8544 (constructor)¶

PCD8544 Constructor

Example¶

var lcd = new PCD8544();
lcd.pixelDraw(10, 10, 1);

MMC¶

MMC (constructor)¶

MMC Constructor

Example¶

new MMC();

SPI¶

SPI (constructor)¶

SPI Object Constructor

Example¶

var s = new SPI(SPI1);
s.send(0xff);

Parameter Name	Description
Port ID	HW SPI Port ID

send¶

Sends data via SPI bus

Example¶

var s = new SPI(SPI1);
s.send(0x1f);

Parameter Name	Description
data	Data to be sent on SPI (integer/array)
cs	Chip select pin (optional)

receive¶

Reads data via SPI bus (dummy data is sent)

Example¶

var s = new SPI(SPI1);
var data = s.receive();

GPIO¶

digitalWrite¶

Set the digital value of a GPIO or a number of GPIOs

Example¶

digitalWrite(GPIO_PF2, true); /* Turn on PF2 */
digitalWrite([GPIO_PF1, GPIO_PF2, GPIO_PF3], 0x5); /* Turn on PF1 & PF3 */

Para mete r Name	Desc ript ion
pin[ s]	Sing le GPIO ID or arra y of GPIO IDs
valu e	Bool ean for a sing le GPIO In case of an arra y, valu e is cons ider ed an inte ger wher e thef irst arra y elem ent maps to the MSB

digitalPulse¶

Create a digital pulse on a GPIO pin for a given period

Example¶

digitalPulse(GPIO_PF2, true, 0.1);

Parameter Name	Description
pin	GPIO pin ID
value	Boolean
ms	Pulse period in milliseconds

digitalRead¶

Read the digital state of a GPIO pin or a number of pins

Example¶

var state = digitalRead(GPIO_PF2);
var a = digitalRead([GPIO_PF0, GPIO_PF1, GPIO_PF2

Parameter Name	Description
pin[s]	GPIO pin ID or array of GPIO pin IDs

analogWrite¶

Set the analog value of a GPIO pin

Example¶

analogWrite(GPIO_PF2, 0.5);

Parameter Name	Description
pin	GPIO pin ID
value	Floating point number with range [0-1]
options (Optional)	Object: { freq : }

analogRead¶

Read the analog value of a GPIO pin

Example¶

var f = analogRead(GPIO_PF2);

Parameter Name	Description
pin	GPIO pin ID

setWatch¶

Calls a function whenever the GPIO pin changes state

Example¶

setWatch(function() { console.log('button changed state'); }, GPIO_PF0);

Para mete r Name	Desc ript ion
cb	call back func tion :The func tion may rece ive an obje ct of type :{ time stam p: in seco nds, stat e: curr ent pin stat e}
pin	GPIO pin ID
opti ons	opti onal opti ons obje ct of type { qlen : int // numb er of pend ing samp les for proc essi ng smal ler than 128, must be powe r of 2. Defa ult =1 }

Serial¶

Serial (constructor)¶

Serial Constructor

Example¶

var s = new Serial(UART1);
s.print('Hello World!);

Para mete r Name	Desc ript ion
UART	HW UART ID
opti ons	opti onal opti ons obje ct of type { baud _ra te : int // Seri al Baud Rate }

enable¶

Enable a serial port

Example¶

var s = new Serial(UART1);
s.enable();

disable¶

Disable a serial port

Example¶

var s = new Serial(UART1);
s.disable();

print¶

Prints string

Example¶

var s = new Serial(UART1);
s.print('Hello World!');

Parameter Name	Description
string	String to be printed to serial port

write¶

Writes data to the serial port

Example¶

var s = new Serial(UART1);
s.write(255);
s.write([1,2,3])

Parameter Name	Description
data	Data (byte/array/string/typed array) to be sent

onData¶

Calls ‘cb’ when data is available on serial port. If cb is undefined, removes the previously set cb

Example¶

var s = new Serial(UART1);
s.onData(function(e) { s.print(e.data); });

Parameter Name	Description
cb	callback function accepting a data object