electricimp’s gists

electricimp / latency.agent.nut

Last active December 18, 2015 15:58

Sample code for demonstrating device/agent communication with an Electric Imp (and round trip latency).

	function startTime(time)
	{
	// Send the device a 'pong' message immediately

	device.send("pong", time);
	}

	// When we get a 'ping' message from the device, call start_time()

	device.on("ping", startTime);

electricimp / isconnected.agent.nut

Last active December 18, 2015 23:39

HTTP handler to demonstrate device.isconnected(). When you browse to the agent URL you will either see a green background (if the agent is connected to the device) or a red background (when the agent is disconnected from the device).

	connectedString <- "disconnected";

	if (device.isconnected())
	{
	connectedString = "connected";
	}

	server.log("The device is " + connectedString);

electricimp / onconnection.agent.nut

Last active December 19, 2015 00:29

This code demonstrates the connection flow of an agent and its device: (1) device connected to agent, (2) device online, (3) device sleeps, (4) device disconnected from agent.

	device.onconnect(function() {server.log("Device connected to agent");});

	device.ondisconnect(function() {server.log("Device disconnected from agent");});

electricimp / getimpeeid.device.nut

Created June 26, 2013 17:06

Logs the impee's unique ID

server.log("Impee's unique id: " + hardware.getimpeeid());

electricimp / pulse.device.nut

Last active December 19, 2015 00:29

This example demonstrates how to use hardware.micros() to capture the length of a pulse on a digital input (ie - how long the pin stayed high)

	pulseStart <- 0;

	function state_change()
	{
	if (hardware.pin1.read())
	{
	pulseStart = hardware.micros();
	}
	else
	{

electricimp / ADCtoVoltage.device.nut

Last active December 19, 2015 00:49

Code to convert ADC readings to actual Voltage.

	function getPin9Voltage()
	{
	// Returns value in volts, between 0.0 and 3.3

	local voltage = hardware.voltage();
	local reading = hardware.pin9.read();
	return (reading / 65535.0) * voltage;
	}

	function sample()

electricimp / wakereason.device.nut

Last active December 19, 2015 00:49

Code snippet showing typical switch statement for hardware.wakereason(). In this example we're just logging the reason to the debug window, but we *could* be performing various tasks based on how the imp was woken up.

	function logDeviceOnline()
	{
	local reasonString = "Unknown"
	switch(hardware.wakereason())
	{
	case WAKEREASON_POWER_ON:
	reasonString = "The power was turned on"
	break

	case WAKEREASON_SW_RESET:

electricimp / agenturl.agent.nut

Created June 27, 2013 18:04

This is a useful snippet to have at the top of your agent code to output the agent URL whenever the agent starts.

server.log(http.agenturl()); // output the agent url to the log console.

electricimp / base64decode.agent.nut

Created June 27, 2013 18:23

Logs a secret message that we've base64 encoded

	// logs a secret message that we've base64 encoded
	server.log(http.base64decode("SW1wdGFzdGljLCBtYXRlIQ=="));

electricimp / basicauth.agent.nut

Created June 27, 2013 18:41

Code snippet demonstrating how to do basic auth with an electric imp

	function getBasicAuthHeader(user, password) {
	local headers = {
	"Authorization" : "Basic " + http.base64encode(user + ":" + password)
	};
	return headers;
	}