public async Task<bool> Init()
{
var config = new FtChannelConfig
{
ClockRate = ConnectionSpeed,
LatencyTimer = LatencyTimer
};
_i2cConfig = _i2cConfig ?? I2CConfiguration.ChannelZeroConfiguration;
_cfg = config;
InitLibAndHandle();
return true;
}
private void InitLibAndHandle()
{
FtResult result;
if (_handle != IntPtr.Zero)
return;
LibMpsse.Init();
result = LibMpsseSpi.SPI_OpenChannel(_spiConfig.ChannelIndex, out _handle);
CheckResult(result);
if (_handle == IntPtr.Zero)
throw new SpiChannelNotConnectedException(FtResult.InvalidHandle);
result = LibMpsseSpi.SPI_InitChannel(_handle, ref _cfg);
CheckResult(result);
_currentGlobalConfig = _cfg;
}
protected SpiDevice(FtChannelConfig config, SpiConfiguration spiConfig)
{
_spiConfig = spiConfig ?? SpiConfiguration.ChannelZeroConfiguration;
_cfg = config;
InitLibAndHandle();
}
protected SpiDevice(FtChannelConfig config)
: this(config, null)
{
}
private void EnforceRightConfiguration()
{
if (_currentGlobalConfig.configOptions != _cfg.configOptions)
{
LibMpsseSpi.SPI_ChangeCS(_handle, _cfg.configOptions);
_currentGlobalConfig = _cfg;
}
}
public static extern FtResult I2C_InitChannel(System.IntPtr handle, ref FtChannelConfig config);
public extern static FtResult SPI_InitChannel(IntPtr handle, ref FtChannelConfig config);
void InitLibAndHandle()
{
FtResult result;
if (_handle != IntPtr.Zero)
return;
LibMpsse.Init();
var num_channels = 0;
var channels = LibMpsseI2C.I2C_GetNumChannels(out num_channels);
CheckResult(channels);
//if (num_channels > 0)
//{
// for (var i = 0; i < num_channels; i++)
// {
// FtDeviceInfo cInfo;
// var channelInfoStatus = LibMpsseI2C.I2C_GetChannelInfo(i, out cInfo);
// CheckResult(channelInfoStatus);
// Debug.WriteLine($"Flags: {cInfo.Flags}");
// Debug.WriteLine($"Type: {cInfo.Type}");
// Debug.WriteLine($"ID: {cInfo.ID}");
// Debug.WriteLine($"LocId: {cInfo.LocId}");
// Debug.WriteLine($"SerialNumber: {cInfo.SerialNumber}");
// Debug.WriteLine($"Description: {cInfo.Description}");
// Debug.WriteLine($"ftHandle: {cInfo.ftHandle}");
// }
//}
result = LibMpsseI2C.I2C_OpenChannel(_i2cConfig.ChannelIndex, out _handle);
CheckResult(result);
if (_handle == IntPtr.Zero)
throw new I2CChannelNotConnectedException(FtResult.InvalidHandle);
result = LibMpsseI2C.I2C_InitChannel(_handle, ref _cfg);
CheckResult(result);
_currentGlobalConfig = _cfg;
}
