public byte[] Read(I2cReadParameter param, uint byteCount)
{
I2CBusCapability capability = GetBusCapabilities();
if (capability.IsUnsupported)
{
throw new Exception("I2C Bus not supported");
}
if (byteCount > capability.MaxBlockLen)
{
throw new IOException("Byte count of " + byteCount + " exceeds max Block Length of " +
capability.MaxBlockLen);
}
var buf = new byte[byteCount];
uint resultCode = EApiI2CReadTransfer((uint)Eapi_I2C_ID.EAPI_ID_I2C_EXTERNAL, param.Addr, param.Cmd, buf, (uint)buf.Length, byteCount);
if (!_eApiStatusCodes.IsSuccess(resultCode))
{
throw new Exception("EApiI2CReadTransfer " + Eapi_I2C_ID.EAPI_ID_I2C_EXTERNAL + ": " + _eApiStatusCodes.GetStatusStringFrom(resultCode));
}
//_logger.Information("Read Bytes: " + BitConverter.ToString(buf));
return(buf);
}
internal void Write(I2cWriteParam param)
{
I2CBusCapability capability = GetBusCapabilities();
if (capability.IsUnsupported)
{
throw new Exception("I2C Bus not supported");
}
if (capability.MaxBlockLen < param.Data.Length)
{
throw new IOException("Byte count of " + param.Data.Length + " exceeds max Block Length of " + capability.MaxBlockLen);
}
uint resultCode = EApiI2CWriteTransfer((uint)Eapi_I2C_ID.EAPI_ID_I2C_EXTERNAL, param.Addr, param.Cmd, param.Data, (uint)param.Data.Length);
if (!_eApiStatusCodes.IsSuccess(resultCode))
{
throw new Exception("EApiI2CWriteTransfer " + Eapi_I2C_ID.EAPI_ID_I2C_EXTERNAL + ": " + _eApiStatusCodes.GetStatusStringFrom(resultCode));
}
}