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Check the link below for more details on "JTAG Interface Connection": http://www.segger.com/jlink.html I haven't experienced any blue screens while using Jlink. However, without using the pull-ups/downs the J-link sometimes doesn't respond at all. In the worst case, EWARM shuts down by itself, and gives me this send report pop-up window. But ever since implementing the resistors, JLINK works perfectly. So, are u using pull-ups & pull downs for required JTAG port pins on your board? J-Link can work without them, but things will be much safer if u use them. Hope this helps, Leighton --- In , "k b shah \(lascaux\)" <kbshah@l...> wrote: > Guys, > That was my suspect i.e. my board is bad, but I have tried same JLINK with other board from ATMEL -- AT91SAM7 series , result is same. I have same trouble. Infect my colleague who has another JLINK, has same issue ...also . He spent 3 days worth of time to find out this issue.... since every time you cycle power, the program can break in the interrupt, otherwise, can not break in the interrupt when there is a breakpoint in interrupt routine. > I do not think it is the issue with my phytech or Atmel board from my colleague. > More like a issue with JLINK. > k b > ----- Original Message ----- > From: Robert Adsett > To: > Sent: Monday, March 14, 2005 10:20 PM > Subject: Re: [lpc2000] Re: Segger / IAR J-Link JTAG and Blue Screen of Death > > > At 06:51 PM 3/14/05 -0500, k b shah \(lascaux\) wrote: > >I have check reset signal going to CPU --- it does not go to '0' state > >i.e. it changes its level from 3V -- Normally high to 2V and then back > >to 3V... > > That sounds like a hardware fault. Either with the board or the > J-link. It's acting as if the reset from the J-link is trying to pull it > down but can't sink enough current. Either the pullup on the reset is too > strong or the reset on the J-Link is not able to sink reasonable current or > there's a bad ground connection or .... > > Robert > > " 'Freedom' has no meaning of itself. There are always restrictions, be > they legal, genetic, or physical. If you don't believe me, try to chew a > radio signal. " -- Kelvin Throop, III > http://www.aeolusdevelopment.com/ > ------------------------------- ----------- > Yahoo! Groups Links > > a.. To > > |
Segger / IAR J-Link JTAG and Blue Screen of Death
Started by ●March 8, 2005
Reply by ●March 15, 20052005-03-15
