hardware.pin9.configure(ANALOG_IN);
hardware.pin8.configure(DIGITAL_OUT);
 
local voltage = hardware.voltage();
server.log(format("Running at %.2f V", voltage));

local coolerState = "and Cooler is On";

server.log("Hardware Configured");
 
function checkPot() {
    local i;
    local rawValue;
    local potValue;
    local totalValue = 0;
    local iterations = 1000;
    local SetTemperature = 250;
    local hysteresis  = 3;
    
    //average a bunch of data to give a nice steady number
    for(i = 0; i<iterations; i++){
        rawValue = hardware.pin9.read();
        potValue = rawValue / 100;
        totalValue += potValue;
    }
    
    totalValue = totalValue / iterations;
    
    server.show(format("Temp is %d Units %s", totalValue, coolerState));
    server.log(format("Temp is %d Units %s", totalValue, coolerState));
    
    if(totalValue <= SetTemperature - hysteresis){
        hardware.pin8.write(0);
        coolerState = "and Cooler is Off";
    }
    if(totalValue >= SetTemperature + hysteresis){
        hardware.pin8.write(1);
        coolerState = "and Cooler is On";
    }
 
    //do it all again!
    imp.wakeup(0.3, checkPot);
}
 
hardware.pin8.write(1);
server.log("Potentiometer Started");
imp.configure("Booze Cooler", [], []);
checkPot();