[OpenOCD-devel] LPC1226: unknown part error on flashing or GDB access

[Jānis Š. <jan...@hw...>]

Hello guys,

I thought LPC1226 was supported, but when I try debugging the target 
with GDB or use 'program' command it crashes with saying:
Error: BUG: unknown Part ID encountered: 0x3660002b

However it does work with basic functionality: I can halt, access 
memory, write to RAM and peripheral registers.

The board is custom-made, but at this point I don't think this is 
anything board-specific. Now, the details from my last attempt: I'm 
running the OpenOCD on Debian 9 (x86_64) with:
/usr/bin/openocd -f jlink.tcl

where contents of 'jlink.tcl' are:

# Use J-Link over SWD transport
source [find interface/jlink.cfg]
transport select swd

# Load LPC12xx configuration
source [find target/lpc12xx.cfg]

# Configure to drive nRESET/SRST (not default)
reset_config srst_only

# Select 10MHz debug clock in accordance to
# Keil default configuration
adapter_khz 10000


then, issuing commands over telnet interface I get such output (telnet 
interactive input intermixed):

Open On-Chip Debugger 0.10.0
Licensed under GNU GPL v2
For bug reports, read
	http://openocd.org/doc/doxygen/bugs.html
adapter speed: 10 kHz
adapter_nsrst_delay: 200
cortex_m reset_config sysresetreq
srst_only separate srst_gates_jtag srst_open_drain connect_deassert_srst
adapter speed: 10000 kHz
Info : No device selected, using first device.
Info : J-Link V10 compiled Dec  7 2017 11:13:46
Info : Hardware version: 10.10
Info : VTarget = 3.386 V
Info : clock speed 10000 kHz
Info : SWD DPIDR 0x0bb11477
Info : lpc12xx.cpu: hardware has 4 breakpoints, 2 watchpoints
Info : accepting 'telnet' connection on tcp/4444
> halt
target halted due to debug-request, current mode: Handler HardFault
xPSR: 0x61000003 pc: 0x00000184 msp: 0x100011f8
> dump_image /tmp/test.bin 0x0 0x4b40       
dumped 19264 bytes in 0.045983s (409.119 KiB/s)
> load_image test_blink.hex
SWD DPIDR 0x0bb11477
Failed to write memory at 0x00000000
> program test_blink.hex   
target halted due to debug-request, current mode: Handler HardFault
xPSR: 0x61000003 pc: 0x00000184 msp: 0x100011f8
** Programming Started **
auto erase enabled
BUG: unknown Part ID encountered: 0x3660002b
Connection closed by foreign host.


So, uhmm, it's a bug, isn't it?

Sincerely,
Jānis