ElectricImpSampleCode

// Define an HTTP request handler
function requestHandler(request, response) {
    try {
        if ("setting" in request.query) {
            // 'setting' is a URL-encoded parameter, ie. '/setting=4'
            local settingValue = request.query.setting.tointeger();
                    
            // Use the 'response' object to acknowledge reception of the request
            // to the request's source. '200' is HTTP status code for 'OK'
            response.send(200, "Setting received and applied");

ElectricImpSampleCode

// Set up outgoing request object as a global (we may need to cancel it, so we need a reference to it)
request <- http.get(webServiceURL, webServiceHeaders);
 
// Define the response handler
function handleResponse(responseTable) {
    // Called when the imp receives an immediate acknowledgement from the remote service
    if (responseTable.statuscode == 200) {
        // Remote service has responded with 'OK' so decode
        // the response's body 'responseTable.body' and headers 'responseTable.headers'
        // Code omitted for clarity...

ElectricImpSampleCode

// Load the data from persistent storage
settings <- server.load();
 
// It the load is null, it tells us this is the first time the agent is running
if (settings.len() == 0) {
    // Set and save defaults
    settings = { "colour" : { "r" : 255, 
                              "g" : 0, 
                              "b" : 0 },
                 "state"  : 0 };

ElectricImpSampleCode

function startup() {
    // Check if nv table exists and if the key 'count' is in the nv table
    if (!("nv" in getroottable() && "count" in nv)) {
        // Create the nv table as a global variable with the key 'count'
        nv <- { "count" : 0 };
        
        // Add a second nv-persisted key, 'previous'
        nv.previous <- "";
    }

ElectricImpSampleCode

// EARLY CALL CODE
server.setsendtimeoutpolicy(RETURN_ON_ERROR, WAIT_TIL_SENT, 30.0);

// GLOBALS
local disconnectedFlag = false;
local disconnectedCount = 0;

// FUNCTIONS
function mainProgramLoop() {
    // We'll fill this in below

ElectricImpSampleCode

// EARLY CALL CODE
server.setsendtimeoutpolicy(RETURN_ON_ERROR, WAIT_TIL_SENT, 30.0);

// GLOBALS
local disconnectedFlag = false;
local disconnectedCount = 0;

// FUNCTIONS
function mainProgramLoop() {
    // Ensure the program loops safely every second

ElectricImpSampleCode

// EARLY CALL CODE
server.setsendtimeoutpolicy(RETURN_ON_ERROR, WAIT_TIL_SENT, 30.0);

// GLOBALS
local downTime = time();
local reconnectAttemptFlag = false;
local sensorData = {};

// FUNCTIONS
function mainLoop() {

ElectricImpSampleCode

// Set the reconnection policy as early as possible in the code
server.setsendtimeoutpolicy(RETURN_ON_ERROR, WAIT_TIL_SENT, 30.0);

// Disable the BlinkUp LED (enforced 60s after boot)
imp.enableblinkup(false);

local willNeedBlinkupFlag = false;
local netData = imp.net.info();

if ("active" in netData) {

ElectricImpSampleCode

// Set the deep sleep trigger to take place only when the imp is idle
imp.onidle(function() {
    // Inform the agent that the device will now sleep for one hour
    // NOTE time specified in seconds
    server.sleepfor(3600);
});

ElectricImpSampleCode

// Set the deep sleep trigger to take place only when the imp is idle
imp.onidle(function {
    // Tell the agent that the device will now sleep until quarter past midnight on Friday
    server.sleepuntil(0, 15, 0, 5);
});