public static void StartRead(Action <byte[]> onRead)
{
_onRead = onRead;
System.Threading.Thread t = new System.Threading.Thread(() =>
{
while (_onRead != null)
{
if (stream != null)
{
try
{
var buf = stream.Read();
_onRead(buf);
}
catch (System.IO.IOException err)//io异常，断开
{
atcdevice = null;
stream = null;
}
catch (TimeoutException err)//超时异常，记录
{
readErrorCount++;
}
}
}
});
t.Start();
}
private byte[] Read(HidStream steam, int length, BackgroundWorker worker = null)
{
var offset = 0;
var result = new byte[length];
while (offset < length)
{
var data = new byte[m_receiveBufferLength];
steam.Read(data);
var bufferLength = offset + data.Length < length
? data.Length
: length - offset;
Buffer.BlockCopy(data, 1, result, offset, bufferLength - 1);
offset += bufferLength == data.Length
? bufferLength - 1
: bufferLength;
if (worker != null) worker.ReportProgress((int)(offset * 100f / length));
}
if (worker != null) worker.ReportProgress(100);
return result;
}
/* execute a HID bootloader command */
private byte[] ExecuteHIDCommand(HidStream stream, int command, int address = 0, byte[] data = null)
{
var buffer = new byte[64];
buffer[0] = 0;
buffer[1] = (byte)command;
buffer[2] = (byte)(address & 0xFF);
buffer[3] = (byte)((address >> 8) & 0xFF);
if (data != null)
{
if (data.Length > 60)
//return null;
throw new System.ArgumentException("Data length cannot be >60 bytes", "original");
for (int i = 0; i < data.Length; i++)
buffer[4 + i] = data[i];
}
try
{
stream.Write(buffer);
stream.ReadTimeout = 100;
byte[] result = stream.Read();
if (result.Length < 4)
return null;
if (result[1] != (byte)(command | 0x80))
return null;
return result;
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
return null;
}
}