BDI2000 with pxa255
Hi,
I've connected bdi2000 to the host computer and successfully updated firmware and managed to telnet to the bdi. I also adapted cfg file for my platform (KK trizeps2). When I power up the target device I get this error:
...
- TARGET: target will be restarted in 10 sec
- TARGET: processing reset request
- TARGET: BDI asserts RESET and TRST
- TARGET: BDI removed TRST
- TARGET: Bypass check: 0x000000001 => 0x00000000
- TARGET: JTAG exists check failed
# TARGET: resetting target failed
# JTAG: communication with target failed
- TARGET: target will be restarted in 10 sec
...
Can somebody point me to the possible causes for this behaviour?
PS. Is it mandatory to supply ~RESET pin to BDI? Can I just keep it in reset with a jumper closed? Trizeps2 is lacking this pin on JTAG connector.
best regards,
hk
Signature · 5 lines
hinko <dot> kocevar <at> iskramedical <dot> si Hinko Kocevar, embedded systems developer Iskra Medical d.o.o., Stegne 23, 1k LJ, SLO-EU "A? r?n" | [Analects XII:22]
Hi
Quoted 1 line
Can somebody point me to the possible causes for this behaviour?
Reset line.
Quoted 1 line
PS. Is it mandatory to supply ~RESET pin to BDI?
Yes.
BDI2000 uses ~RESET to upload the debug handler into the mini IC. See figure 10-11 in the Intel Xscale Microarchitecture User's Manual.
Quoted 1 line
Can I just keep it in reset with a jumper closed?
Well, if you can match the timing and probably you should have a pull-up on the ~RESET line of the JTAG connector to the BDI2000, but I doubt it.
Matej
Quoted 9 lines · Matej Kupljen
Hi
Quoted 1 line
Can somebody point me to the possible causes for this behaviour?
Reset line.
Quoted 7 lines
Quoted 1 line
PS. Is it mandatory to supply ~RESET pin to BDI?
Yes.
BDI2000 uses ~RESET to upload the debug handler into the mini IC. See figure 10-11 in the Intel Xscale Microarchitecture User's Manual.
Ok, I've found the reset pin on PXA255 and wired it to correct pin on BDI2000, but still the same error appears :(.
Should there be any other pullup/pulldown resistors on other JTAG lines besides reset or does BDI hava them 'built in'?
regards,
hk
Signature · 5 lines
hinko <dot> kocevar <at> iskramedical <dot> si Hinko Kocevar, embedded systems developer Iskra Medical d.o.o., Stegne 23, 1k LJ, SLO-EU "A? r?n" | [Analects XII:22]