cat-haines’s gists

cat-haines / agent.nut

Created April 20, 2013 00:02

Electric Imp example API

	local greenState = 0;
	local redState = 0;

	device.on("setRed", function(data) {
	redState = data;
	});

	device.on("setGreen", function(data) {
	greenState = data;
	});

cat-haines / pulse.js

Last active December 16, 2015 20:19

A simple Squirrel class for handeling pulses as a type of digital input and a simple example using it. NOTE: Accuracy has NOT been tested.

	/*******************************************************************************
	* Reads a pulse (either HIGH or LOW) on a pin. If the pulseValue is HIGH,
	* the object will start timing when the pin goes HIGH, then waits for the pin
	* to go LOW, and executes the callback (callback expects a function with one
	* parameter, the length of the pulse in microseconds).
	*
	* The accuracy of this function has not been tested, and will have some
	* variance because of how callbacks work.
	******************************************************************************/
	class Pulse {

cat-haines / 1HttpIn.js

Last active December 18, 2015 10:29

This is a collection of code snipper for the blog post at: beardedinventor.com/2013/06/12/Migrating-from-HTTP-Nodes-to-Agents/ These files are actually .nut files (Squirrel) - but we store them as .js for formatting and syntax highlighting.

	// Create a class to control an LED from an input port
	class LedController extends InputPort {

	led = null;

	constructor(name, _led) {
	base(name);
	this.led = _led;
	}

cat-haines / agent.button.js

Last active December 20, 2015 19:59

This GIST has four files and demonstrates how data can be passed from one imp to another using HTTP requests, and HTTP request handlers.

	const otherAgentUrl = "http://agent.electricimp.com/YourOtherAgentID";

	// create a handler for the "button" message from the device
	device.on("button", function(state) {
	local url = otherAgentUrl + "?led=" + state;
	server.log("sending request to " + url);
	// create the request
	local request = http.get(url);
	// send the request
	request.sendsync();

cat-haines / agent.nut

Last active December 20, 2015 23:58

Here's some code I wrote in my mail editor to demonstrate how you can use ping-pong messages to only respond to an HTTP request after receiving confirmation that your imp got the message. It also uses a watched function to return timeouts if a specific timeout is exceeded.

	responseQueue <- [];
	timeout <- 5; // timeout (in seconds) for roundtrip from agent -> device -> agent.

	// function that triggers responses if timeout expires
	function checkResponses() {
	local newQueue = [];
	// loop through http response queue
	local t = time();
	for (local i = 0; i < responseQueue.len(); i++) {
	// if it's been sitting for more than allowed timeout

cat-haines / gist:6694483

Last active December 23, 2015 21:09

	html <- "<html><head><title>Hello World</title></head><body><h1>Hello World</h1><div>I'm being server by an angert!! Hurray</div></body></html>";

	http.onrequest(function(req, res) {
	res.send(200, html);
	});

cat-haines / stringify.nut

Last active December 30, 2015 01:59

Recursively traverses a Squirrel table (or object) and logs the results.

	function stringify(t, i = 0) {
	local indentString = "";
	for(local x = 0; x < i; x++) indentString += ".";

	if (typeof(t) != "table" && typeof(t) != "array") {
	server.log(indentString + t)
	} else {
	foreach(k, v in t) {
	if (typeof(v) == "table" \|\| typeof(v) == "array") {
	local par = "[]";

cat-haines / 1-SendTemp.device.nut

Last active January 2, 2016 20:49

Code for head First into AT&T M2X blog post.

	/*** Include Hannah class here ***/

	hannah <- Hannah();

	function poll() {
	agent.send("temp", { temp = hannah.temp.get() });
	imp.onidle(function() { server.sleepfor(30.0); });
	}

	poll();

cat-haines / create-device.agent.nut

Last active August 29, 2015 13:59

Code for the SkyNet blog post

	data <- {
	platform = "electric imp",
	online = true,
	token = "4e64e622-f456-44a6-af00-b996b6bea7a1",
	type = "temp",
	lat = 37.39674,
	long = -122.10473
	}

	http.post(SKYNET_BASE + "devices", {}, http.urlencode(data)).sendasync(function(resp) {

cat-haines / gist:34fd9be68fd792959afb

Created June 12, 2014 18:08

	curl -X POST -d "type=drone&color=black&owner=bc7e4f6c-a0a7-4ab7-98b7-ec688fd36156" http://skynet.im/devices

	{"type":"drone","color":"black","owner":"bc7e4f6c-a0a7-4ab7-98b7-ec688fd36156","ipAddress":"173.8.157.38","uuid":"58402a41-f25c-11e3-ba2e-0b078550b2fe","timestamp":"2014-06-12T18:06:58.276Z","token":"b56jgbmi8xyo80k97rj9fx4p274d9529","channel":"main","online":false}


	verify that uuid exists by running:
	curl -X GET http://skynet.im/devices/58402a41-f25c-11e3-ba2e-0b078550b2fe --header "skynet_auth_uuid: bc7e4f6c-a0a7-4ab7-98b7-ec688fd36156" --header "skynet_auth_token: b56jgbmi8xyo80k97rj9fx4p274d9529"

	{"error":"unauthorized"}%

Cat Haines cat-haines