Esempio n. 1
0
            private byte[] ReadFromDevice(ISPIPeripheral device, int count)
            {
                var result = new byte[count];

                for (var i = 0; i < result.Length; i++)
                {
                    // send a dummy byte
                    result[i] = device.Transmit(0);
                }

                return(result);
            }
Esempio n. 2
0
            private bool HandleCommand(IPCommandDescriptor cmd, ISPIPeripheral device)
            {
                var result = true;

                parent.Log(LogLevel.Debug, "About to execute command {0}", cmd);

                switch (cmd.Command)
                {
                case IPCommand.TransmitCommand_SDR:
                    device.Transmit(cmd.Operand);
                    break;

                case IPCommand.ReceiveReadData_SDR:
                {
                    var dataCount = (parent.dataSize.Value == 0)
                                ? cmd.Operand
                                : parent.dataSize.Value;

                    var data  = ReadFromDevice(device, (int)dataCount);
                    var count = parent.rxQueue.Enqueue(data);
                    if (count != data.Length)
                    {
                        parent.Log(LogLevel.Warning, "There is no more space left in the RX queue. {0} bytes were dropped", data.Length - count);
                    }
                }
                break;

                case IPCommand.Stop:
                {
                    device.FinishTransmission();
                    parent.ipCommandDone.Value = true;
                    parent.UpdateInterrupts();
                }
                break;


                case IPCommand.TransmitProgrammingData_SDR:
                {
                    parent.isInTransmit = true;
                    // note: parent operation breaks execution of the command
                    // waiting for the data to be written to FIFO
                    result = false;
                }
                break;

                case IPCommand.TransmitRowAddress_SDR:
                {
                    var a0 = (byte)(parent.serialFlashAddress.Value);
                    var a1 = (byte)(parent.serialFlashAddress.Value >> 8);
                    var a2 = (byte)(parent.serialFlashAddress.Value >> 16);
                    device.Transmit(a2);
                    device.Transmit(a1);
                    device.Transmit(a0);
                }
                break;

                default:
                    parent.Log(LogLevel.Info, "Unsupported IP command: {0}", cmd);
                    break;
                }

                return(result);
            }