public Measurement GetWeight(bool single = false)
{
try
{
if (clockPin == null || dataPin == null)
{
return(null);
}
// TODO: sample sensors and report weight -- mocked for now
//return new Measurement(165.0f, Measurement.UnitsOfMeasure.Pounds);
device = new HX711(clockPin, dataPin);
var w = _GetOutputData();
Debug.WriteLine($"Single:{w}");
var c = Calibrated(w);
if (!CheckAnomaly(c))
{
PriorMeasurements.Enqueue(new Measurement(c, Measurement.UnitsOfMeasure.Ounces));
}
Debug.WriteLine($"Current Avg:{PriorMeasurements.Average(i => i.Amount)}");
#if DEBUG
foreach (var item in PriorMeasurements)
{
Debug.WriteLine($" {item.Amount}");
}
#endif
if (single)
{
return(new Measurement(w, Measurement.UnitsOfMeasure.Ounces));
}
else
{
return(new Measurement(PriorMeasurements.Average(i => i.Amount), Measurement.UnitsOfMeasure.Ounces));
}
}
catch (Exception ex)
{
Debug.WriteLine($"Error,{ex.Message}");
KegLogger.KegLogException(ex, "Weight:GetWeight", SeverityLevel.Critical);
KegLogger.KegLogTrace(ex.Message, "Weight:GetWeight", SeverityLevel.Warning,
new Dictionary <string, string>()
{
{ "ClockPin", CalibrationSettings[WeightClockGpioPinNumberSetting].ToString() },
{ "DataPin", CalibrationSettings[WeightDataGpioPinNumberSetting].ToString() }
});
}
return(null);
}
private static void Loop(HX711 scale)
{
var result = scale.GetUnits(10);
//Blink the on board led according to the weight
for (int i = 0; i < Math.Abs(result / 10); i++)
{
Led.Write(true);
Thread.Sleep(100);
Led.Write(false);
Thread.Sleep(100);
}
scale.PowerDown(); // put the ADC in sleep mode for two seconds
Thread.Sleep(2000);
scale.PowerUp();
}
public static void Main()
{
// parameter "gain" is ommited; the default value 128 is used by the library
var scale = new HX711(Pins.GPIO_PIN_D1, Pins.GPIO_PIN_D0)
{
Scale = 2280.0
};
// this value is obtained by calibrating the scale with known weights; see the https://github.com/bogde/HX711 for details
scale.Tare();
while (true)
{
Loop(scale);
}
}
static void Main(string[] args)
{
var settings = new HX711Settings(25, 24);
var hx711 = new HX711(settings);
hx711.SetGain(Gain.x64);
Console.WriteLine($"TARE: {hx711.Tare(50)}");
Console.ReadLine();
Console.WriteLine($"Calibration: {hx711.Calibrate(Iot.Units.Weight.WeightSystem.Metric, 100)}");
while (true)
{
Console.WriteLine($"{hx711.MetricWeight.Grams.ToString("0.00")}g");
Thread.Sleep(500);
}
}
public void Initialize()
{
if (device == null)
{
GpioController controller = GpioController.GetDefault();
GpioOpenStatus status;
if (controller != null &&
controller.TryOpenPin(Int32.Parse(CalibrationSettings[WeightClockGpioPinNumberSetting].ToString()), GpioSharingMode.Exclusive, out clockPin, out status) &&
controller.TryOpenPin(Int32.Parse(CalibrationSettings[WeightDataGpioPinNumberSetting].ToString()), GpioSharingMode.Exclusive, out dataPin, out status))
{
device = new HX711(clockPin, dataPin);
}
else
{
device = null;
}
}
if (device != null)
{
device.PowerOn();
}
}
public static void Start(string[] args)
{
if (args.Length < 2)
{
TestMain.ErrorExit("Device testing needs device to test.");
}
switch (args[1].ToLower())
{
case "hx711":
{
if (args.Length < 5)
{
TestMain.ErrorExit("Insufficient info to run HX711 test. See help.");
}
IDigitalIn DataPin = null;
IDigitalOut ClockPin = null;
if (args[2].Equals("pi", StringComparison.InvariantCultureIgnoreCase))
{
RaspberryPi.Initialize();
DataPin = new DigitalInPi(int.Parse(args[3]));
ClockPin = new DigitalOutPi(int.Parse(args[4]));
}
else if (args[2].Equals("bbb", StringComparison.InvariantCultureIgnoreCase))
{
BeagleBone.Initialize(SystemMode.DEFAULT, true);
BBBPin DataBBBPin = IOBBB.StringToPin(args[3]);
BBBPin ClockBBBPin = IOBBB.StringToPin(args[4]);
BBBPinManager.AddMappingGPIO(DataBBBPin, false, ResistorState.NONE);
BBBPinManager.AddMappingGPIO(ClockBBBPin, true, ResistorState.NONE);
BBBPinManager.ApplyPinSettings(BBBPinManager.ApplicationMode.APPLY_IF_NONE);
DataPin = new DigitalInBBB(DataBBBPin);
ClockPin = new DigitalOutBBB(ClockBBBPin);
}
else
{
TestMain.ErrorExit("HX711 test: Unknown platform. See help.");
}
HX711 DUT = new HX711(ClockPin, DataPin);
while (Console.KeyAvailable)
{
Console.ReadKey();
}
Log.Output(Log.Severity.INFO, Log.Source.GUI, "[w] to increase gain, [s] to decrease. [z] to zero.");
Log.Output(Log.Severity.INFO, Log.Source.GUI, "Press any other key to exit.");
HX711.Gain Gain = HX711.Gain.GAIN_128x;
bool Continue = true;
while (Continue)
{
if (Console.KeyAvailable)
{
char Key = Console.ReadKey().KeyChar;
switch (Key)
{
case 'w':
{
if (Gain == HX711.Gain.GAIN_32x)
{
Gain = HX711.Gain.GAIN_64x;
}
else if (Gain == HX711.Gain.GAIN_64x)
{
Gain = HX711.Gain.GAIN_128x;
}
else
{
Log.Output(Log.Severity.ERROR, Log.Source.SENSORS, "Gain at maximum already.");
}
DUT.SetGain(Gain);
Log.Output(Log.Severity.INFO, Log.Source.SENSORS, "Gain now at " + Gain);
break;
}
case 's':
{
if (Gain == HX711.Gain.GAIN_128x)
{
Gain = HX711.Gain.GAIN_64x;
}
else if (Gain == HX711.Gain.GAIN_64x)
{
Gain = HX711.Gain.GAIN_32x;
}
else
{
Log.Output(Log.Severity.ERROR, Log.Source.SENSORS, "Gain at minimum already.");
}
DUT.SetGain(Gain);
Log.Output(Log.Severity.INFO, Log.Source.SENSORS, "Gain now at " + Gain);
break;
}
case 'z':
{
DUT.Tare();
Log.Output(Log.Severity.INFO, Log.Source.SENSORS, "Tared.");
break;
}
default:
{
Continue = false;
break;
}
}
}
DUT.UpdateState();
Log.Output(Log.Severity.INFO, Log.Source.SENSORS, "HX711 readings: Raw: " + DUT.GetRawReading() + ", Adjusted: " + DUT.GetAdjustedReading());
Thread.Sleep(250);
}
break;
}
default:
{
TestMain.ErrorExit("Unknown device.");
break;
}
}
}