Raspberry.IO.InterIntegratedCircuit.I2cDriver.Write C# (CSharp) Method

        private void Write(int deviceAddress, byte[] buffer)
        {
            this.EnsureDeviceAddress(deviceAddress);

            var len = (uint)buffer.Length;

            var dlen = this.bscAddress + (int)Interop.BCM2835_BSC_DLEN;
            var fifo = this.bscAddress + (int)Interop.BCM2835_BSC_FIFO;
            var status = this.bscAddress + (int)Interop.BCM2835_BSC_S;
            var control = this.bscAddress + (int)Interop.BCM2835_BSC_C;

            var remaining = len;
            var i = 0;

            // Clear FIFO
            WriteUInt32Mask(control, Interop.BCM2835_BSC_C_CLEAR_1, Interop.BCM2835_BSC_C_CLEAR_1);

            // Clear Status
            WriteUInt32(status, Interop.BCM2835_BSC_S_CLKT | Interop.BCM2835_BSC_S_ERR | Interop.BCM2835_BSC_S_DONE);

            // Set Data Length
            WriteUInt32(dlen, len);

            while (remaining != 0 && i < Interop.BCM2835_BSC_FIFO_SIZE)
            {
                WriteUInt32(fifo, buffer[i]);
                i++;
                remaining--;
            }

            // Enable device and start transfer
            WriteUInt32(control, Interop.BCM2835_BSC_C_I2CEN | Interop.BCM2835_BSC_C_ST);

            while ((ReadUInt32(status) & Interop.BCM2835_BSC_S_DONE) == 0)
            {
                while (remaining != 0 && (ReadUInt32(status) & Interop.BCM2835_BSC_S_TXD) != 0)
                {
                    // Write to FIFO, no barrier
                    WriteUInt32(fifo, buffer[i]);
                    i++;
                    remaining--;
                }

                this.Wait(remaining);
            }

            if ((SafeReadUInt32(status) & Interop.BCM2835_BSC_S_ERR) != 0) // Received a NACK
                throw new InvalidOperationException("Read operation failed with BCM2835_I2C_REASON_ERROR_NACK status");
            if ((SafeReadUInt32(status) & Interop.BCM2835_BSC_S_CLKT) != 0) // Received Clock Stretch Timeout
                throw new InvalidOperationException("Read operation failed with BCM2835_I2C_REASON_ERROR_CLKT status");
            if (remaining != 0) // Not all data is sent
                throw new InvalidOperationException(string.Format("Read operation failed with BCM2835_I2C_REASON_ERROR_DATA status, missing {0} bytes", remaining));
        }

        /////// <summary>
        /////// Executes the specified transaction.
        /////// </summary>
        /////// <param name="transaction">The transaction.</param>
        ////public void Execute(I2cTransaction transaction)
        ////{
        ////    if (transaction == null)
        ////    {
        ////        throw new ArgumentNullException("transaction");
        ////    }

        ////    driver.Execute(deviceAddress, transaction);
        ////}

        /// <summary>
        /// Writes the specified buffer.
        /// </summary>
        /// <param name="buffer">The buffer.</param>
        public void Write(params byte[] buffer)
        {
            //Execute(new I2cTransaction(new I2cWriteAction(buffer)));
            driver.Write(deviceAddress, buffer);
        }