protected override ushort Read(Stm32Command command, ushort data, bool dataAvailable)
{
if (dataAvailable)
{
_gpioExpander.WriteAddressWord(Unsafe.As <Stm32Command, byte>(ref command), data);
return(_gpioExpander.ReadAddressWord(Unsafe.As <Stm32Command, byte>(ref command)));
}
return(_gpioExpander.ReadAddressWord(Unsafe.As <Stm32Command, byte>(ref command)));
}
private void ADS1115ReadValuesWiringPi(byte busId, byte i2cAddress, byte[] configDataChunk, byte[] convertDataChunk)
{
Pi.Init <BootstrapWiringPi>();
II2CDevice ads1115 = Pi.I2C.AddDevice(i2cAddress);
var configWord = (ushort)((configDataChunk[2] << 8) + configDataChunk[1]);
// Write config register to the ADC
//var currentConfig = ads1115.ReadAddressWord(ADS1115.ADS1115_REG_POINTER_CONFIG);
//Console.WriteLine($"Setting original configuration ({currentConfig.ToString("X")}) to {config.ToString("X")}");
ads1115.WriteAddressWord(configDataChunk[0], configWord);
//currentConfig = ads1115.ReadAddressWord(ADS1115.ADS1115_REG_POINTER_CONFIG);
//Console.WriteLine($"New configuration: {currentConfig.ToString("X")}");
DateTime firstDataRead = DateTime.UtcNow;
while (true)
{
// Read the conversion results
ushort result = (ushort)(ads1115.ReadAddressWord(convertDataChunk[0]));
float voltage = (float)(result < 32768 ? result : -(65536 - result)) * 2.048f / 65536.0f;
j++;
if (j % 1000 == 0)
{
Console.WriteLine(String.Format("| ADC value: {0,5} V | sample rate: {1,7} SPS |", voltage.ToString("N", CultureInfo.InvariantCulture), ((double)j / (DateTime.UtcNow - firstDataRead).TotalSeconds).ToString("N")));
}
}
}
private short RawReadADC()
{
// Wait for the conversion to complete
Thread.Sleep(conversionDelay);
// Read the conversion results
// Shift 12-bit results right 4 bits for the ADS1015
return((short)(SwapWord(device.ReadAddressWord(ADS1015REGPOINTERCONVERT)) >> bitShift));
}
private short RawReadADC()
{
// Wait for the conversion to complete
Thread.Sleep(_conversionDelay);
ushort statusRegister = (ushort)SwapWord(_device.ReadAddressWord(ADS1015REGPOINTERCONFIG));
int timeout = 1000;
while ((statusRegister & 0x8000) == 0 && (timeout-- > 0))
{
Pi.Timing.SleepMicroseconds(2);
statusRegister = (ushort)SwapWord(_device.ReadAddressWord(ADS1015REGPOINTERCONFIG));
}
if (timeout <= 0)
{
throw new TimeoutException("Timeout reading value from ADC.");
}
// Read the conversion results
// Shift 12-bit results right 4 bits for the ADS1015
return((short)(SwapWord(_device.ReadAddressWord(ADS1015REGPOINTERCONVERT)) >> _bitShift));
}
public static UInt16 Read16Bits(II2CDevice device, byte reg, ByteOrder byteOrder, string exceptionMessage)
{
try
{
return(device.ReadAddressWord(reg));
}
catch (Exception exception)
{
throw new SensorException(exceptionMessage, exception);
}
}
public byte[] Read(int adress)
{
try
{
var data = _device.ReadAddressWord(adress);
I2CGlobalError = false;
return(BitConverter.GetBytes(data));
}
catch (Unosquare.RaspberryIO.Abstractions.Native.HardwareException)
{
I2CGlobalError = true;
return(null);
}
}
public static short ReadAddressWordSwapped(this II2CDevice device, short address)
{
// Read the conversion results
// Shift 12-bit results right 4 bits for the ADS1015
return((short)SwapWord(device.ReadAddressWord(address)));
}
//Method to read a 16-bit value from a register and return it in little endian format
private ushort ReadUInt16_LittleEndian(byte register)
{
return(bme280.ReadAddressWord(register));
}