private Dht22 GetSensor()
{
GpioDriver driver = new RaspberryPi3Driver();
GpioController controller = new GpioController(PinNumberingScheme.Logical, driver);
return(new Dht22(4, gpioController: controller));
}
public static void ReadSensor()
{
var blinky = false;
GpioDriver driver = new RaspberryPi3Driver();
var controller = new GpioController(PinNumberingScheme.Logical, driver);
controller.OpenPin(16, PinMode.Output);
using (var dht = new Dht11(4, gpioController: controller))
{
while (true)
{
var temperature = dht.Temperature;
var humidity = dht.Humidity;
if (dht.IsLastReadSuccessful)
{
Console.WriteLine($"Temperature: {temperature.DegreesCelsius} \u00B0C, Humidity: {humidity.Percent} %");
}
if (!blinky)
{
controller.Write(16, PinValue.High);
}
else
{
controller.Write(16, PinValue.Low);
}
blinky = !blinky;
Thread.Sleep(1000);
}
}
}
static async Task SendEvents(ModuleClient moduleClient)
{
var count = 0;
var blinky = false;
GpioDriver driver = new RaspberryPi3Driver();
var controller = new GpioController(PinNumberingScheme.Logical, driver);
controller.OpenPin(16, PinMode.Output);
using (var dht = new Dht11(4, gpioController: controller))
{
while (!cts.Token.IsCancellationRequested)
{
var temperature = dht.Temperature;
var humidity = dht.Humidity;
if (dht.IsLastReadSuccessful)
{
Console.WriteLine($"Temperature: {temperature.DegreesCelsius} \u00B0C, Humidity: {humidity.Percent} %");
var tempData = new MessageBody
{
Ambient = new Ambient
{
Temperature = temperature.DegreesCelsius,
Humidity = Convert.ToInt32(humidity.Percent)
},
TimeCreated = DateTime.UtcNow
};
string dataBuffer = JsonConvert.SerializeObject(tempData);
var eventMessage = new Message(Encoding.UTF8.GetBytes(dataBuffer));
eventMessage.Properties.Add("sequenceNumber", count.ToString());
eventMessage.Properties.Add("batchId", BatchId.ToString());
Console.WriteLine($"\t{DateTime.Now.ToLocalTime()}> Sending message: {count}, Body: [{dataBuffer}]");
await moduleClient.SendEventAsync("temperatureOutput", eventMessage);
count++;
}
if (!blinky)
{
controller.Write(16, PinValue.High);
}
else
{
controller.Write(16, PinValue.Low);
}
blinky = !blinky;
await Task.Delay(1000, cts.Token);
}
}
}
/// <summary>
/// Attempt to get the best applicable driver for the board the program is executing on.
/// </summary>
/// <returns>A driver that works with the board the program is executing on.</returns>
private static GpioDriver GetBestDriverForBoardOnLinux()
{
RaspberryPi3LinuxDriver?internalDriver = RaspberryPi3Driver.CreateInternalRaspberryPi3LinuxDriver(out _);
if (internalDriver is object)
{
return(new RaspberryPi3Driver(internalDriver));
}
return(UnixDriver.Create());
}
/// <summary>
/// Initialize
/// </summary>
public void Initialize(int busId = 0)
{
var settings = new SpiConnectionSettings(busId, CS);
settings.ClockFrequency = 8000000;
settings.DataBitLength = 8;
settings.Mode = SpiMode.Mode0;
sensor = new UnixSpiDevice(settings);
driver = new RaspberryPi3Driver();
gpio = new GpioController(PinNumberingScheme.Logical, driver);
gpio.OpenPin(CE, PinMode.Output);
gpio.Write(CE, PinValue.High);
gpio.OpenPin(IRQ, PinMode.Input);
gpio.RegisterCallbackForPinValueChangedEvent(IRQ, PinEventTypes.Falling, Irq_ValueChangedDown);
gpio.Write(CE, PinValue.Low);
// reflect RX_DR interrupt, TX_DS interrupt not reflected, power up, receive mode
WriteRegister(R_REGISTER, 0b_0011_1011);
gpio.Write(CE, PinValue.High);
Thread.Sleep(20);
SetRxPayloadSize(packetSize);
SetChannel(25);
if (SetDataRate(DataRate.DR250Kbps))
{
isPlusModel = true;
}
SetCRCLength(CRCLength.CRC8);
SetPALevel(PALevel.PA_MAX);
EnableAckPayload();
SetRetryPolicy(3, 15);
MaskDataSent(false);
MaskMaskDataReady(false);
MaskMaxRetries(false);
SetAutoAck(true);
FlushTX();
FlushRX();
}
