public override async Task <List <string> > GetFilesOnDevice(bool refresh = true, int timeoutInMs = 30000)
{
if (SerialPort == null)
{
throw new Exception("SerialPort not intialized");
}
if (FilesOnDevice.Count == 0 || refresh == true)
{
var timeOutTask = Task.Delay(timeoutInMs);
EventHandler <MeadowMessageEventArgs> handler = null;
var tcs = new TaskCompletionSource <bool>();
bool started = false;
handler = (s, e) =>
{
if (e.MessageType == MeadowMessageType.FileListTitle)
{
FilesOnDevice.Clear();
FileCrcs.Clear();
started = true;
}
else if (started == false)
{ //ignore everything until we've started a new file list request
return;
}
if (e.MessageType == MeadowMessageType.FileListMember)
{
SetFileNameFromMessage(e.Message);
}
if (e.MessageType == MeadowMessageType.Concluded)
{
tcs.SetResult(true);
}
};
DataProcessor.OnReceiveData += handler;
await MeadowFileManager.ListFiles(this);
await Task.WhenAny(new Task[] { timeOutTask, tcs.Task });
DataProcessor.OnReceiveData -= handler;
}
return(FilesOnDevice);
}
public override async Task <(List <string> files, List <UInt32> crcs)> GetFilesAndCrcs(int timeoutInMs = 60000)
{
if (SerialPort == null)
{
throw new Exception("SerialPort not intialized");
}
var timeOutTask = Task.Delay(timeoutInMs);
EventHandler <MeadowMessageEventArgs> handler = null;
var tcs = new TaskCompletionSource <bool>();
var started = false;
handler = (s, e) =>
{
Console.WriteLine($"Msg: {e.MessageType}");
if (e.MessageType == MeadowMessageType.FileListTitle)
{
FilesOnDevice.Clear();
FileCrcs.Clear();
started = true;
}
else if (started == false)
{ //ignore everything until we've started a new file list request
return;
}
if (e.MessageType == MeadowMessageType.FileListCrcMember)
{
SetFileAndCrcsFromMessage(e.Message);
}
if (e.MessageType == MeadowMessageType.Concluded)
{
tcs.TrySetResult(true);
}
};
DataProcessor.OnReceiveData += handler;
await MeadowFileManager.ListFilesAndCrcs(this).ConfigureAwait(false);
await Task.WhenAny(new Task[] { timeOutTask, tcs.Task });
DataProcessor.OnReceiveData -= handler;
return(FilesOnDevice, FileCrcs);
}
void SetFileAndCrcsFromMessage(string fileListMember)
{
ConsoleOut($"SetFileAndCrcsFromMessage {fileListMember}");
int fileNameStart = fileListMember.LastIndexOf('/') + 1;
int crcStart = fileListMember.IndexOf('[') + 1;
if (fileNameStart == 0 && crcStart == 0)
{
return; // No files found
}
Debug.Assert(crcStart > fileNameStart);
var file = fileListMember.Substring(fileNameStart, crcStart - fileNameStart - 2);
FilesOnDevice.Add(file.Trim());
var crc = Convert.ToUInt32(fileListMember.Substring(crcStart, 10), 16);
FileCrcs.Add(crc);
}
