Tim,
This is the device that is working on Windows and has been in production for
years (with Windows API calles), I am not develop the device, what I am
doing is use the device, simple read & write.
The exactly the same code work when running in single-threaded app.
when look at my libUSB code, did you see anything that should be changed?
I do not currently have a USB Analyze for Linux Right, but I did ran the
same code in Windows and it crashed the app, not sure if it will help here.
I attached my debug output and USB Trace here.
Please let me know if you see anything.
Thx a lot.
Here is my previous post:
Pete,
I was wondering where you were? Anywhere I am so glad you could help me out
on this here ::)
I have done the following:
1) Download the latest from GIT
2) Uncomment //#define DEBUG_POLL_WINDOWS" (line 51). in poll_windows.c: ,
added a debug printout of winusb_handle and transfer->endpoint
3) recompiled libusbx as a static library
4) set LIBUSB_DEBUG=4, run the app, generate trace, please see
LibUSBDebugTrace.txt
5) I also downloaded libusbk dirver, but I am not sure how to use it, right
now I am using zadig_v2.0.1.154
6) I also added a lot of my own logging here, hopefully it will be helpful.
Please let me know if you need anything else from.
Thanks a lot.
Here are some of the related code.
DWORD WINAPI LibUSBDevice::LoopEvent(void* lpParam)
{
while (RunLoopCode)
{
try
{
struct timeval tv = { 0, 50000 };
int completed =0;
//cout << "before libusb_handle_events_timeout " <<
std::endl;
cout << "**********" << msg << "Before call
libusb_handle_events_timeout_completed***********" << std::endl;
//int err =
libusb_handle_events_timeout_completed(NULL, &tv,&completed
);
int err=libusb_handle_events_completed(NULL,&completed)
;
cout << "**********" << msg << "after call
libusb_handle_events_timeout_completed, error # is " << err << "
****************" << std::endl;
if (err<0)
{
cout << "!!!!!!!!!!!!!!!!!!err calling done
libusb_handle_events_timeout!!!!!!!!!!!!" << std::endl;
}
}
catch (...)
{
cout << "!!!!!!!!!!!!unexpected exception!!!!!" <<
std::endl;
}
}
return 0;
}
ErrNo LibUSBDevice::BulkRead(
const ULONG c_ulPipeNum,
// IN
const uint c_uiLength,
// IN
DWORD* bytesRead, // IN
uint* pbBuffer, // IN
HANDLE cancelEvent)
{
const ULONG endpoint=0x80+c_ulPipeNum*2;
...
err=libusb_submit_transfer(transfer);
while (!userdata->ExitTransfer)
{
cout << "Bulk Read waiting the call back,c_ulPipeNum:" <<
c_ulPipeNum <<
"c_uiLength:" << c_uiLength << "............" << std::endl;
Sleep(1000); //note : change this number to 100 does not
make any
difference
}
cout << ++cnt << "****************** BulkRead read call
libusb_handle_events_timeout;data->ByteTransfered:" <<
userdata->ByteTransfered <<
";ErrorCode ****************** ;" << userdata-> ErrorCode <<
std::endl;
...
}
int LibUSBDevice::BulkWrite(
const unsigned long c_ulPipeNum,
const unsigned int c_uiLength,
uint * pbBuffer,
HANDLE cancelEvent)
{
const unsigned long endpoint=c_ulPipeNum*2;
m_lastOSErrorCode=libusb_submit_transfer(transfer);
...
while (!userdata->ExitTransfer)
{
Sleep(100);
cout << "Bulk Write waiting the call back,c_ulPipeNum:" <<
c_ulPipeNum <<
"c_uiLength:" << c_uiLength << "............" << std::endl;
}
cout << ++cnt << "********** Bulk Write call
libusb_handle_events_timeout**********" << std::endl;
...
LibUSBDebugTrace.txt
<http://libusbx.1081486.n5.nabble.com/file/n225/LibUSBDebugTrace.txt>
USBTraceLog.txt
<http://libusbx.1081486.n5.nabble.com/file/n225/USBTraceLog.txt>
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Sent from the libusbx mailing list archive at Nabble.com.
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