Error: wrong JTAG tap

Development Boards MicroMod
1

Hi everyone,

I’am new to openOCD but with lots of reading and trying i got it running - finally.

One last problem remains, in my lpc2103.cfg (see below for complete listing) I have to do

set _CPUTAPID 0x4f1f0f0f

because without that i get the error:

simon@PuckLin:~/projekte/common/openOCD_config$ sudo openocd -f daemon/daemon.cfg -f interface/Olimex_ARM_USB_Tiny.cfg -f target/lpc2103.cfg -c init -c reset
Open On-Chip Debugger 1.0 (2008-12-26-16:30) svn:1274


BUGS? Read http://svn.berlios.de/svnroot/repos/openocd/trunk/BUGS


$URL: http://svn.berlios.de/svnroot/repos/openocd/trunk/src/openocd.c $
force hard breakpoints
jtag_speed: 20
200 kHz
Info : JTAG tap: lpc2103.cpu tap/device found: 0x4f1f0f0f (Manufacturer: 0x787, Part: 0xf1f0, Version: 0x4)
Error: JTAG tap: lpc2103.cpu             got: 0x4f1f0f0f (mfg: 0x787, part: 0xf1f0, ver: 0x4)
Error: JTAG tap: lpc2103.cpu expected 1 of 1: 0xffffffff (mfg: 0x7ff, part: 0xffff, ver: 0xf)
Error: trying to validate configured JTAG chain anyway...
Info : JTAG tap: lpc2103.cpu tap/device found: 0x4f1f0f0f (Manufacturer: 0x787, Part: 0xf1f0, Version: 0x4)
Error: JTAG tap: lpc2103.cpu             got: 0x4f1f0f0f (mfg: 0x787, part: 0xf1f0, ver: 0x4)
Error: JTAG tap: lpc2103.cpu expected 1 of 1: 0xffffffff (mfg: 0x7ff, part: 0xffff, ver: 0xf)
Error: trying to validate configured JTAG chain anyway...

From that one can see that the error TAP ID is set. But I simply don’t understand why and how to fix the problem in a better way than mine.

I have to admit that I’am far from understandig the config - in parts yes but much of it is copied from examples.

I use an OLIMEX ARM-USB-TINY and LPC-H2103 (also a board from olimex).

Hope someone has a clue for me!

Thanks!

lpc2103.cfg:

#LPC-2103 CPU


if { [info exists CHIPNAME] } {
   set  _CHIPNAME $CHIPNAME
} else {
   set  _CHIPNAME lpc2103
}

if { [info exists ENDIAN] } {
   set  _ENDIAN $ENDIAN
} else {
   set  _ENDIAN little
}

if { [info exists CPUTAPID ] } {
   set _CPUTAPID $CPUTAPID
} else {
  # force an error till we get a good number
   set _CPUTAPID 0xffffffff
}

#debug override
set _CPUTAPID 0x4f1f0f0f 

#use combined on interfaces or targets that can't set TRST/SRST separately
reset_config trst_and_srst srst_pulls_trst
jtag_khz 200
#jtag scan chain
jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID

set _TARGETNAME [format "%s.cpu" $_CHIPNAME]
target create $_TARGETNAME arm7tdmi -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm7tdmi-s_r4

$_TARGETNAME configure -work-area-virt 0 -work-area-phys 0x40000000 -work-area-size 0x2000

#flash bank <driver> <base> <size> <chip_width> <bus_width>
flash bank lpc2000 0x0 0x8000 0 0 0 lpc2000_v2 14765 calc_checksum
2

Did you ever get this to work ? Cause I am in the same boat like you.

my LP2103.cfg file is missing / needs to be configured.

I am basically hanging myself on this thread :slight_smile:

Thanks

Csaba