public Mb85rc256vDevice(int busNumber, byte chipNumber,
I2cBusSpeed speed = I2cBusSpeed.FastMode, I2cSharingMode sharingMode = I2cSharingMode.Exclusive)
: base(chipNumber, MemorySize)
{
// Get address
var address = GetDataI2cAddress(chipNumber);
// Connect to hardware
Hardware = I2cExtensions.Connect(busNumber, address, speed, sharingMode);
}
public Ms5611Device(int busNumber, bool csb, Ms5611Osr rate,
I2cBusSpeed speed = I2cBusSpeed.FastMode, I2cSharingMode sharingMode = I2cSharingMode.Exclusive)
{
// Get address
ChipSelectBit = csb;
Address = GetI2cAddress(csb);
// Connect to hardware
_hardware = I2cExtensions.Connect(busNumber, Address, speed, sharingMode);
// Initialize members
Prom = new Ms5611PromData();
Osr = rate;
// Read current calibration data (potentially not stable until next reset)
// We don't reset automatically so that it is possible for any ongoing tasks to complete
ReadProm();
}
public static Mb85rcvDeviceId?GetDeviceId(int busNumber, byte idAddress, byte dataAddress,
I2cBusSpeed speed = I2cBusSpeed.FastMode, I2cSharingMode sharingMode = I2cSharingMode.Exclusive)
{
// Connect to ID device
using (var framIdRegister = I2cExtensions.Connect(busNumber, idAddress, speed, sharingMode))
{
// Send ID command sequence, returning device ID bytes
var dataAddress8bit = (byte)(dataAddress << 1);
var data = new byte[Mb85rcvDeviceId.Size];
var transfer = framIdRegister.WriteReadPartial(new[] { dataAddress8bit }, data);
if (transfer.Status == I2cTransferStatus.SlaveAddressNotAcknowledged) // Any other error must throw
{
// Return null when not found
return(null);
}
// Decode and return ID when found
return(new Mb85rcvDeviceId(data));
}
}
public Pca9685Device(int busNumber, byte chipNumber, int?clockSpeed,
I2cBusSpeed speed = I2cBusSpeed.FastMode, I2cSharingMode sharingMode = I2cSharingMode.Exclusive)
{
// Validate
if (clockSpeed.HasValue && (clockSpeed == 0 || clockSpeed.Value > ClockSpeedMaximum))
{
throw new ArgumentOutOfRangeException(nameof(clockSpeed));
}
// Get address
var address = GetI2cAddress(chipNumber);
// Connect to hardware
_hardware = I2cExtensions.Connect(busNumber, address, speed, sharingMode);
// Initialize configuration
ClockIsExternal = clockSpeed.HasValue;
ClockSpeed = clockSpeed ?? InternalClockSpeed;
FrequencyDefault = CalculateFrequency(PrescaleDefault, ClockSpeed);
FrequencyMinimum = CalculateFrequency(PrescaleMaximum, ClockSpeed); // Inverse relationship (max = min)
FrequencyMaximum = CalculateFrequency(PrescaleMinimum, ClockSpeed); // Inverse relationship (min = max)
// Build channels
_channels = new Collection <Pca9685ChannelValue>();
Channels = new ReadOnlyCollection <Pca9685ChannelValue>(_channels);
for (var index = 0; index < ChannelCount; index++)
{
_channels.Add(new Pca9685ChannelValue(index));
}
// Set "all call" address
I2cExtensions.WriteJoinByte(_hardware, (byte)Pca9685Register.AllCall, I2cAllCallAddress);
// Enable auto-increment and "all call"
I2cExtensions.WriteReadWriteBit(_hardware, (byte)Pca9685Register.Mode1,
(byte)(Pca9685Mode1Bits.AutoIncrement | Pca9685Mode1Bits.AllCall), true);
// Read current values and update properties
ReadAll();
}
public Mb85rc04vDevice(int busNumber, byte chipNumber,
I2cBusSpeed speed = I2cBusSpeed.FastMode, I2cSharingMode sharingMode = I2cSharingMode.Exclusive)
: base(chipNumber, MemorySize)
{
// Check device addresses
var lowerAddress = GetDataI2cAddress(chipNumber, false);
var upperAddress = GetDataI2cAddress(chipNumber, true);
// Connect to devices
try
{
Hardware = I2cExtensions.Connect(busNumber, lowerAddress, speed, sharingMode);
HardwareUpper = I2cExtensions.Connect(busNumber, upperAddress, speed, sharingMode);
}
catch
{
// Free resources on initialization error
Hardware?.Dispose();
HardwareUpper?.Dispose();
// Continue error
throw;
}
}