private static async Task PerformFirmwareUpdate()
{
// Notify clients that we are now installing a firmware update
using (await Model.Provider.AccessReadWriteAsync())
{
Model.Provider.Get.State.Status = MachineStatus.Updating;
}
// Get the CRC16 checksum of the firmware binary
byte[] firmwareBlob = new byte[_firmwareStream.Length];
await _firmwareStream.ReadAsync(firmwareBlob, 0, (int)_firmwareStream.Length);
ushort crc16 = CRC16.Calculate(firmwareBlob);
// Send the IAP binary to the firmware
Console.Write("[info] Flashing IAP binary");
bool dataSent;
do
{
dataSent = DataTransfer.WriteIapSegment(_iapStream);
DataTransfer.PerformFullTransfer();
Console.Write('.');
}while (dataSent);
Console.WriteLine();
_iapStream.Close();
_iapStream = null;
// Start the IAP binary
DataTransfer.StartIap();
// Send the firmware binary to the IAP program
int numRetries = 0;
do
{
if (numRetries != 0)
{
Console.WriteLine("Error");
}
Console.Write("[info] Flashing RepRapFirmware");
_firmwareStream.Seek(0, SeekOrigin.Begin);
while (DataTransfer.FlashFirmwareSegment(_firmwareStream))
{
Console.Write('.');
}
Console.WriteLine();
Console.Write("[info] Verifying checksum... ");
}while (++numRetries < 3 && !DataTransfer.VerifyFirmwareChecksum(_firmwareStream.Length, crc16));
if (numRetries == 3)
{
Console.WriteLine("Error");
// Failed to flash the firmware
await Utility.Logger.LogOutput(MessageType.Error, "Could not flash the firmware binary after 3 attempts. Please install it manually via bossac.");
Program.CancelSource.Cancel();
}
else
{
Console.WriteLine("OK");
// Wait for the IAP binary to restart the controller
DataTransfer.WaitForIapReset();
Console.WriteLine("[info] Firmware update successful!");
}
_firmwareStream.Close();
_firmwareStream = null;
using (_firmwareUpdateLock.Lock())
{
_firmwareUpdateRequest.SetResult(null);
_firmwareUpdateRequest = null;
}
}
/// <summary>
/// Perform the firmware update internally
/// </summary>
/// <returns>Asynchronous task</returns>
private static async Task PerformFirmwareUpdate()
{
using (await Model.Provider.AccessReadWriteAsync())
{
Model.Provider.Get.State.Status = MachineStatus.Updating;
}
DataTransfer.Updating = true;
try
{
// Get the CRC16 checksum of the firmware binary
byte[] firmwareBlob = new byte[_firmwareStream.Length];
await _firmwareStream.ReadAsync(firmwareBlob, 0, (int)_firmwareStream.Length);
ushort crc16 = CRC16.Calculate(firmwareBlob);
// Send the IAP binary to the firmware
_logger.Info("Flashing IAP binary");
bool dataSent;
do
{
dataSent = DataTransfer.WriteIapSegment(_iapStream);
DataTransfer.PerformFullTransfer();
if (_logger.IsDebugEnabled)
{
Console.Write('.');
}
}while (dataSent);
if (_logger.IsDebugEnabled)
{
Console.WriteLine();
}
// Start the IAP binary
DataTransfer.StartIap();
// Send the firmware binary to the IAP program
int numRetries = 0;
do
{
if (numRetries != 0)
{
_logger.Error("Firmware checksum verification failed");
}
_logger.Info("Flashing RepRapFirmware");
_firmwareStream.Seek(0, SeekOrigin.Begin);
while (DataTransfer.FlashFirmwareSegment(_firmwareStream))
{
if (_logger.IsDebugEnabled)
{
Console.Write('.');
}
}
if (_logger.IsDebugEnabled)
{
Console.WriteLine();
}
_logger.Info("Verifying checksum");
}while (++numRetries < 3 && !DataTransfer.VerifyFirmwareChecksum(_firmwareStream.Length, crc16));
if (numRetries == 3)
{
// Failed to flash the firmware
await Logger.LogOutput(MessageType.Error, "Could not flash the firmware binary after 3 attempts. Please install it manually via bossac.");
Program.CancelSource.Cancel();
}
else
{
// Wait for the IAP binary to restart the controller
await DataTransfer.WaitForIapReset();
_logger.Info("Firmware update successful");
}
}
finally
{
DataTransfer.Updating = false;
// Machine state is reset when the next status response is processed
}
}