I have tested the libftdi-018 DLL with the same result as before. I will see if solution 2 makes any difference...
On Sat, 2010-07-31 at 17:59 +0800, Xiaofan Chen wrote: > On Sat, Jul 31, 2010 at 5:11 PM, <olof.tang...@telia.com> wrote: > > > When I plug in the JTAG interface it is recoginized as 2 instances of > > LibUSB-Win32 Devices in the device mangager. The drivers are working > > properly according to the dialog boxes. The > > LED on the USB interface is not lit however. The LPC-H2148 is powered > > from its USB interface and is recognized > > as a CDC ACM port. > > > > I then try to run OpenOCD the following happens: > > > > Error: couldn't read enough bytes from FT2232 device (0 < 81) > > Error: couldn't read from FT2232 > > Error: couldn't read enough bytes from FT2232 device (0 < 81) > > Error: couldn't read from FT2232 > > Command handler execution failed > > Warn : jtag initialization failed; try 'jtag init' again. > > >From what I read in the libftdi mailing list this is a problem with libftdi. > > First solution, you may want to try out libftdi-0.18, You need to replace > the libftdi-0.17 dll inside Freddie's package > (C:\Program Files\OpenOCD\0.4.0\libftdi.dll) > with the 0.18 dll. I have the 0.18 binary download here (for 32bit > Windows). I am not so positive if this helps, but no harm trying. > http://picusb.googlecode.com/files/libftdi-0.18_mingw32.zip > > Second solution, switching to libftdi-1.0 will probably solve > the problem. > > To use libftdi-1.0 with OpenOCD, you need to do two things. > 1) Switch the driver to WinUSB, you can do that easily with > Zadig and libusb-1.0 Windows binary snapshots. > http://www.libusb.org/wiki/windows_backend > http://libusb-winusb-wip.googlecode.com/files/zadig.exe > http://libusb-winusb-wip.googlecode.com/files/libusb_2010.07.31.7z > > 2) Get libftdi-1.0 binary from here. > http://picusb.googlecode.com/files/libftdi1_05July2010.zip > Replace libftdi.dll with the dll inside the above zip file. > Replace libusb0.dll from Freddie's package with the libusb-1.0.dll > inside the libusb_2010.07.31.7z package. > > > _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
