Awake Imp post JSON payload

electric_imp_system_ping

function getDateTime(){
    local d = date();
    local datestring = format("%04d-%02d-%02dT%02d:%02d:%02d", d.year, d.month+1, d.day, d.hour, d.min, d.sec); //ISO 8601
    return datestring;
}

class RespInput extends InputPort
{
    name = "response";
    type = "string";
    
    function set(serverresponse)
    {
        server.show(serverresponse);
    }
}

local input = RespInput("response", "string");
local output = OutputPort("request", "string"); 

function awake()
{       
    local signal = format("%d", imp.rssi()) //dBm
    local voltage = hardware.voltage()
    local mac = imp.getmacaddress()
    local bssid = imp.getbssid()
    local id = hardware.getimpeeid()
    local time = getDateTime()    
    
    local response = "{\"impeeBssid\": \"" + bssid + "\",\"impeeId\": \"" + id + "\",\"impeeMac\": \"" + mac + "\",\"impeeSignal\": \"" + signal + "\",\"impeeTime\": \"" + time + "\",\"impeeVoltage\": \"" + voltage + "\"}"
    server.log(response);
    server.show(time);
    output.set(response);
    imp.wakeup(imp.configparams.period, awake);    
}

imp.configure("System Ping", [input], [output], {period = 30});
imp.wakeup(imp.configparams.period, awake);