Re: [Openocd-development] More problems with basic communication, DM355 + Amontec JTAGKey-Tiny

2010-04-29 Thread Jon Povey
Jon Povey wrote: Since then I have also tested the latest GIT version under (virtual) linux, and also the latest git version build with FTDI's drivers instead of libftdi. All combinations show the same random errors. Also tried at a range of different JTAG clock speeds, makes no difference.

Re: [Openocd-development] More problems with basic communication, DM355 + Amontec JTAGKey-Tiny

2010-04-29 Thread Laurent Gauch
Signal rise time troubles are related to the IO port current ! Amontec JTAGkey Tiny uses VREF to power his JTAG IO port ( TCK, TMS, TDI, SRST_N and TRST_N signals ). How did you connect the VREF pin1 and the GND pin20 of the Amontec JTAGkey Tiny ? follow these rules : 1. The VREF pin1 of the

Re: [Openocd-development] More problems with basic communication, DM355 + Amontec JTAGKey-Tiny

2010-04-23 Thread Jon Povey
Xiaofan Chen wrote: On Thu, Apr 22, 2010 at 6:38 PM, Jon Povey jon.po...@racelogic.co.uk wrote: I have switched from running OpenOCD on Linux inside VirtualBox, to running it natively on XP. I have not been able to reproduce the situation that needed the JTAGKey-Tiny to be replugged, but I

[Openocd-development] More problems with basic communication, DM355 + Amontec JTAGKey-Tiny

2010-04-22 Thread Jon Povey
After my earlier emails I have been trying to narrow things down a bit. I have switched from running OpenOCD on Linux inside VirtualBox, to running it natively on XP. I have not been able to reproduce the situation that needed the JTAGKey-Tiny to be replugged, but I still get random

Re: [Openocd-development] More problems with basic communication, DM355 + Amontec JTAGKey-Tiny

2010-04-22 Thread Xiaofan Chen
On Thu, Apr 22, 2010 at 6:38 PM, Jon Povey jon.po...@racelogic.co.uk wrote: After my earlier emails I have been trying to narrow things down a bit. I have switched from running OpenOCD on Linux inside VirtualBox, to running it natively on XP. I have not been able to reproduce the situation