On Tue, Oct 19, 2010 at 3:03 PM, Xiaofan Chen <xiaof...@gmail.com> wrote: > On Tue, Oct 19, 2010 at 2:38 PM, Peter Stuge <pe...@stuge.se> wrote: >>> For the OpenOCD, we know there are some optimizations do be done on >>> the software to accelerate the USB JTAG cable. >> >> The bottleneck is stupid adapters. > > People can actually get decent result from the so-called stupid > adapters. For examples, Urjtag project is now mainly using libusb-1.0 > and libftdi-1.0 instead of the old libusb-0.1 and libftdi-0.1x to get > much better result because of the async API support. Maybe > as the first step, OpenOCD can be modified to make use of the > async API provided by libusb-1.0 and libftdi-1.0. >
Reference from the developer of libftdi-1.0. http://sourceforge.net/mailarchive/message.php?msg_name=4B70279A.3010307%40analog.com http://developer.intra2net.com/mailarchive/html/libftdi/2010/msg00065.html gnICE is Analog Device's low cost JTAG debugger for the BlackFin device. It is based on FT2232C/D (not FT2232H) Jumping from 10.3KB/s to 110.2KB/s is a great performance improvement. -- Xiaofan _______________________________________________ Openocd-development mailing list Openocd-development@lists.berlios.de https://lists.berlios.de/mailman/listinfo/openocd-development
