On Sun, Jul 17, 2011 at 9:05 AM, Xiaofan Chen wrote:
> https://lists.berlios.de/pipermail/openocd-development/2010-October/016725.html
> Øyvind Harboe wrote on Tue Oct 19 2010,
>> As a start for debugging delay issues, type "help jtag_flush_queue_sleep".
>>
>> Plot the performance of 0, 10 and 100
https://lists.berlios.de/pipermail/openocd-development/2010-October/016725.html
Øyvind Harboe wrote on Tue Oct 19 2010,
> As a start for debugging delay issues, type "help jtag_flush_queue_sleep".
>
> Plot the performance of 0, 10 and 100ms of an operation. It should allow
> you to guestimate how m
On Sat, Jul 16, 2011 at 8:58 AM, Xiaofan Chen wrote:
>> For the USB 2.0 Jtagkey2, using the WHQL driver and ftd2xx is
>> only about 5% faster than using libftdi and libusb-win32 filter driver
>> on top of the WHQL driver.
>>
>> jtag_khz = 1200 KHz, 11.826 KiB/s (ftd2xx) versus 11.296 KiB/s
>> (lib
On Sat, Jul 16, 2011 at 10:55 AM, Xiaofan Chen wrote:
> On Sat, Jul 16, 2011 at 10:31 AM, Xiaofan Chen wrote:
>
>> Actually the result is pretty close for the LPC-P2148 based test.
>> jtag_khz = 1500 KHz, 38.927 KiB/s (ftd2xx) versus 38.754 KiB/s.
>>
>
> The above is for Amontec JtagKey2 which is
On Sat, Jul 16, 2011 at 1:21 PM, Peter Stuge wrote:
>> I did some tests for libftdi-1.0 last time and it did not
>> offer any speed improvement for OpenOCD since OpenOCD
>> has not taken the advantage of the libftdi-1.0 async API.
>
> Yes, I also don't expect speed advantages without rewrite, but
On Sat, Jul 16, 2011 at 7:46 PM, Uwe Bonnes
wrote:
> B.t.w. a question to those working with WinUSB:
>
> Is it possible to map the calls to winusb.dll to libusb at all? How much
> work will be involved? The reason why I ask: If we can map all calls to
> winusb to libusb, a replacement dll can be w
> "Xiaofan" == Xiaofan Chen writes:
Xiaofan> On Sat, Jul 16, 2011 at 12:23 AM, Uwe Bonnes
...
Xiaofan> future but the change may require quite a bit of work. Now that
Xiaofan> both you (the current main driver of libftdi-1.0 and developer
Xiaofan> of xc3sprog) and Jie Zhang (o
