device

// device
// variable to hold latest power from board
// Class for display
class display {
    hardwareref = null;
    hardwarestate = 0;
    displayvalue = 0;
    blinking = false;
    tester = false;
    myname="";
    wakeup = 0;
    
    constructor (_hardwareref,_outputtype, _displayname) {
        this.hardwareref = _hardwareref;
        this.hardwareref.configure(_outputtype);
        this.myname = _displayname;
    }
    function write (arg) {
        arg = vtune (arg);
        hardwareref.write(arg);
        hardwarestate = arg;
       // server.log ("hardware state (" + myname + "): " + arg);
    }
    // Minor voltage adjustments
    function vtune (arg) {
        if (arg < 0.15) {
            arg*=1.3 }
        else {
            arg*=1.05;
        }
        return arg;
    }
    function setvalue (arg) {
     if(!this.tester) {
        server.log("setvalue (" + myname + "): " + arg);
        if (arg==0) {
            this.displayvalue = 0;
            server.log("clear " + myname );
            this.dontblink();
            this.update();
        } else if (arg>=1) {
            // Here value is coming in minutes (max 10)
            // so we want to divide by 20 to turn into the right
            // output range (0-0.5v)
            this.displayvalue=arg.tofloat()/20;
            this.dontblink ();
            this.update ();
        } else {
            // Here the value is coming in 10ths of a minute (max 10)
            // so we want to divide it by 2 to turn into the right
            // output range (0-0.5v)
            displayvalue=arg.tofloat()/2;
            blink ();
        }
     }
    }
    function blink () {
       // Gate so we don't keep turning it on
       if (!blinking) {
                blinking = true;
            //  initiate blinking
                runblinkloop ();
                server.log("started blinking")
            }
       }
    function dontblink () {
        // Set the indicator
        blinking = false;
    }
    function runblinkloop () {
        // Check you're still supposed to be blinking
        if (blinking) {
            // if its on, turn it off and vv
            if (hardwarestate>0) {
                write(0);
               // server.log ("Update LED (" + myname + "):" + 0);
            } else { 
                write(displayvalue);
            //    server.log ("Update LED (" + myname + "):" + displayvalue);
            }
            // go again
            imp.wakeup(0.15, this.runblinkloop.bindenv(this));
        }
    }
    function test () {
        this.tester = true;
        this.update();
    }
   
    // Variables for testing mode only
    pos = 0;
    dir = 1;
    /////////////////////////////
    function update () {
       // If it's set to run as a test
       if (this.tester) {
           //server.log ("pin: " + this.pos.tofloat()/20);
            write(this.pos.tofloat()/20);
            this.pos += this.dir;
            //server.log (this.pos);
            if (this.pos==10||this.pos==0) {
                this.dir *= -1;
            }
            imp.wakeup(0.1, this.update.bindenv(this));
        // Otherwise write the value to the display and to the variable
        } else {
            write(displayvalue);
        }
    }
}

// Set up first display
display1 <- display(hardware.pin5, ANALOG_OUT, "1st bus");
//display1.test();
// Set up second display
display2 <- display(hardware.pin1, ANALOG_OUT, "2nd bus");
//display2.test();


// captures events passed in
agent.on("time", function(arg) {
    // For the testing
    //arg=[0.5,1];
    //arg=[];
    
    // Test to see if a first bus time has been passed in and if 
    // update relevant display
    //server.log ("here")
    if (arg.len() > 0) {
        //server.log("bus 1: " + arg[0]);
         display1.setvalue (arg[0])
    } else {
        display1.setvalue (0);
    }
    // Test to see if a second bus time has been passed in and if 
    // update relevant display
    if (arg.len()>1) {
        //server.log("bus 2: " + arg[1]);
        display2.setvalue (arg[1]);
    } else {
        display2.setvalue (0);
    }
});

/// Power check and feedback

function powercheck () {
    imp.wakeup(3600, powercheck);
    local power = hardware.voltage();
    agent.send("power", power);
}

// start the powercheck loop running
powercheck();