Electric Imp - Yo all subscribers on button press

april.agent.nut

const YO_API_TOKEN = "api_token_goes_here";

device.on("yo", function(nothing) {
    local url = "http://api.justyo.co/yoall/";
    local body = "api_token=" + YO_API_TOKEN;
   
    local req = http.post(url, {}, body);
    local res = req.sendsync();
    
    if(res.statuscode != 201) {
        server.log(res.statuscode + " error sending message: " + res.body);
    } else server.log("Sent YO! to all subscribers " + res.statuscode + " OK");
});

april.device.nut

// Alias the GPIO pin as 'button'
button <- hardware.pin1;
 
function buttonPress() {
    local state = button.read();
    server.log("Button is triggered: " + (state ? "up" : "down"));
    
    if(state == 1){
        agent.send("yo", null);
    }
}
 
// Configure the button to call buttonPress() when the pin's state changes
button.configure(DIGITAL_IN_PULLUP, buttonPress);