public Nrf(PinNumberEnum chipEnable, SpiChannelEnum channel, int spiSpeed = DefaultSpiSpeed)
{
_channel = channel;
_chipEnable = chipEnable;
Functionalities.Pins.Setup(_chipEnable, PinModeEnum.Output);
Functionalities.Pins.Write(_chipEnable, false);
Functionalities.Spi.Setup(_channel, spiSpeed);
Functionalities.Sleep.Milli(5);
var general = (ConfigurationRegister)ReadRegister(RegisterEnum.Configuration);
var frequency = (FrequencyChannelRegister)ReadRegister(RegisterEnum.FrequencyChannel);
State = general.PowerState;
Mode = general.TransceiverMode;
Frequency = frequency.Frequency;
for (byte pipeNumber = 0; pipeNumber < 6; ++pipeNumber)
{
WriteRegister(new PayloadSizeRegister(pipeNumber, PayloadSize));
}
}
public Module(PinNumberEnum chipEnable, SpiChannelEnum channel, [NotNull] Address address, [NotNull] Address broadcastAddress, byte radioChannel,
bool sendContinuously = false, bool readRetransmissionsCount = false,
OutputPowerEnum outputPower = OutputPowerEnum.P0dbm, DataRateEnum dataRate = DataRateEnum.S1Mbps,
byte autoRetransmitRetryLimit = 10, AutoRetransmitDelayEnum autoRetransmitDelay = AutoRetransmitDelayEnum.T2000us,
int spiSpeed = Nrf.DefaultSpiSpeed)
{
if (address == null)
{
throw new ArgumentNullException(nameof(address));
}
if (broadcastAddress == null)
{
throw new ArgumentNullException(nameof(broadcastAddress));
}
Packet.BaseAddress = address;
Address = address;
BroadcastAddress = broadcastAddress;
_sendContinuously = sendContinuously;
_readRetransmissionsCount = readRetransmissionsCount;
_nrf = new Nrf(chipEnable, channel, spiSpeed);
if (!_nrf.IsConnected)
{
throw new InvalidOperationException("NRF doesn't seem to be connected.");
}
_nrf.WriteRegister(new ConfigurationRegister(false, false, false, true, CrcLengthEnum.TwoBytes, PowerStateEnum.Down, TransceiverModeEnum.Receiver));
_nrf.WriteRegister(new AutoAcknowledgmentRegister(true, true, false, false, false, false));
_nrf.WriteRegister(new ReceiverAddressRegister(true, true, false, false, false, false));
_nrf.WriteRegister(new AddressWidthRegister(AddressWidthEnum.FiveBytes));
_nrf.WriteRegister(new AutoRetransmissionRegister(autoRetransmitDelay, autoRetransmitRetryLimit));
_nrf.WriteRegister(new FrequencyChannelRegister(radioChannel));
_nrf.WriteRegister(new RadioRegister(false, false, dataRate, outputPower));
_nrf.WriteRegister(new FeatureRegister(false, false, true));
_nrf.WriteRegister(new DynamicPayloadLengthRegister(false, false, false, false, false, false));
_nrf.Flush();
_nrf.SetPipeReceiveAddress(1, Address);
_nrf.ModifyRegister <ConfigurationRegister>(RegisterEnum.Configuration, register => register.TransceiverMode = TransceiverModeEnum.Transmitter);
_nrf.SetupDelay();
_nrf.ChangePowerState(PowerStateEnum.Up);
// Standby-I
_worker = new BackgroundWorker
{
WorkerSupportsCancellation = true,
};
_worker.DoWork += Work;
_worker.RunWorkerCompleted += WorkCompleted;
}
public static int Setup(SpiChannelEnum channel, int speed)
{
if (speed < 500000 || speed > 32000000)
{
throw new ArgumentOutOfRangeException(nameof(speed));
}
var spiPin = channel.ToPinNumber();
Pins.Setup(spiPin, PinModeEnum.Output);
Pins.Write(spiPin, true);
var fileDescriptor = Unmanaged.Spi.Setup((int)channel, speed);
if (fileDescriptor >= 0)
{
return(fileDescriptor);
}
switch (fileDescriptor)
{
case -1:
throw new Exception("Could not setup SPI. Function open() or ioctl() did not execute correctly.");
default:
throw new Exception($"Could not setup SPI. Result: {fileDescriptor}.");
}
}
public Processor(PinNumberEnum chipEnable, SpiChannelEnum channel, [NotNull] Address address, [NotNull] Address broadcastAddress, byte radioChannel,
bool sendContinuously = false, bool readRetransmissionsCount = false)
{
_module = new Module(chipEnable, channel, address, broadcastAddress, radioChannel, sendContinuously, readRetransmissionsCount,
spiSpeed: 12000000);
_module.Received += OnReceived;
_module.SendingFailed += OnSendingFailed;
_module.Sent += OnSent;
_module.Error += OnError;
}
public static PinNumberEnum ToPinNumber(this SpiChannelEnum channel) => channel == SpiChannelEnum.One ? PinNumberEnum.SPI_CE1 : PinNumberEnum.SPI_CE0;
public static int Exchange(SpiChannelEnum channel, byte[] data, int?length = null) => Unmanaged.Spi.Exchange((int)channel, data, length ?? data.Length);
