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Re: [lpc2000] Re: Segger / IAR J-Link JTAG and Blue Screen of Death

2005-03-14 by k b shah (lascaux)

Gentleman,
I am aware of reset  checkbox, infact I have a macro written to do same job...
for IAR 4.21A...
   execUserPreload()
  {
    __hwReset(0);
  }
  execUserReset()
  {
    __hwReset(0);
  }
  Still I do not get reset condition .I have Phytech development board for LPC2294.
As far as programming is concern, I am compiling my code for Internal RAM and running it from internal RAM. (Flash -- internal is erased )...
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...
k b shah
  ----- Original Message ----- 
  From: jamesasteres 
  To: lpc2000@yahoogroups.com 
  Sent: Monday, March 14, 2005 1:25 PM
  Subject: [lpc2000] Re: Segger / IAR J-Link JTAG and Blue Screen of Death



  What are you trying to do - Program via ISP (Philips utility) and 
  then trying to debug with JLINK?  Is that valid?  Also, there is a 
  checkbox in the IAR setup for JLINK to reset the micro.  The 
  problems do seem to be something like you gents are describing, 
  though.
  James


  --- In lpc2000@yahoogroups.com, "k b shah \(lascaux\)" <kbshah@l...> 
  wrote:
  > I think issue with JLINk is ---> it does not provide good reset 
  signal to processor.
  > After download it does not provide Reset to CPU --> This in turn 
  doe not provide default reset condition of CPU when you start 
  debugging.
  > --Result is --- > you can  not break in the interrupts at all when 
  you are reloading program or restart debugging before cycling power 
  to main board  every time.
  > Also if you turn of power in the middle of debug and start  
  debugging again, it provides you blue screen well come messge..... 
  wow...crash... I am using windows 2000 with SP4 installed ..
  > k b shah
  > 
  >   ----- Original Message ----- 
  >   From: Mark Butcher 
  >   To: lpc2000@yahoogroups.com 
  >   Sent: Monday, March 14, 2005 6:49 AM
  >   Subject: [lpc2000] Re: Segger / IAR J-Link JTAG and Blue Screen 
  of Death
  > 
  > 
  > 
  >   Hi
  > 
  >   I use the J-Link and sometimes there are quite a lot of problems 
  >   with it and sometimes it works quite well.
  > 
  >   What I have found is that it is deadly to have programmed an 
  >   operating code via ISP. I can't explain why but the debugger 
  hangs 
  >   and crashes and often doesn't want to do anything sensible.
  > 
  >   When I delete the code form FLASH (using ISP again - ie. Philips 
  >   upload uitility) all is very stable again.
  > 
  >   Could this help?
  > 
  >   Regards
  > 
  >   Mark Butcher
  > 
  >   www.mjbc.ch
  > 
  > 
  >   --- In lpc2000@yahoogroups.com, "jamesasteres" 
  <jamesasteres@y...> 
  >   wrote:
  >   > 
  >   > I agree that the BSOD shouldn't be caused by a too-fast CPU.  
  >   Sorry, 
  >   > I can't help more.  But, one of the engineers here using that 
  same 
  >   > IAR/JLINK combo has BSODs also.  Please post if you find out 
  >   > anything.
  >   > Tahn
  >   > 
  >   > --- In lpc2000@yahoogroups.com, "Dan Beadle" <dan.beadle@i...> 
  >   wrote:
  >   > > Thanks for the tip.  I do turn on PLL very early - in first 
  dozen
  >   > > instructions or so.  
  >   > > 
  >   > >  
  >   > > 
  >   > > I do sometimes have trouble gaining control - get illegal 
  CPU 
  >   ID.  
  >   > Power
  >   > > cycling the board (and resetting the CPU)  does seem to help 
  >   > that.  But I
  >   > > don't see how it would cause BSOD.  
  >   > > 
  >   > >  
  >   > > 
  >   > > IAR has been pretty good on compiler issues.  They swapped 
  out 
  >   the 
  >   > JLink,
  >   > > hoping that it was hardware, but the driver failures are 
  still 
  >   > happening too
  >   > > often.
  >   > > 
  >   > >  
  >   > > 
  >   > > Dan
  >   > > 
  >   > >  
  > 
  > 
  > 
  > 
  > 
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