Configurar debugging:

• Run → Debug configurations…
• Doble click a GDB OpenOCD Debugging
• Pestaña Main → C/C++ Application, “Browse…” a $HOME/ciaa-ide/Firmware/out/bin/blinking.axf
• Pestaña Debugger → “Start OpenOCD locally” debe estar activado.
• Executable: openocd
• Config options: -f $HOME/ciaa-ide/Firmware/modules/tools/openocd/cfg/cortexM4/lpc43xx/lpc4337/ciaa-nxp.cfg

• Sección “GDB Client Setup”, campo Executable: arm-none-eabi-gdb
• Click en Apply, luego en Debug…
• Debería abrirse la perspectiva Debug y detenerse en la primer sentencia de la función main().
• Si se está usando una EDU-CIAA con la memoria flash borrada, puede que falle al iniciar el debugging.

Hay que abrir dos terminales, una para OpenOCD y otra para el debugger.

./bin/openocd-0.9.0/src/openocd -f ./modules/tools/openocd/cfg/cortexM4/lpc43xx/lpc4337/ciaa-nxp.cfg -c "gdb_memory_map disable"

Va a mostrar algo como

Open On-Chip Debugger 0.9.0 (2016-06-11-10:53)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
adapter speed: 2000 kHz
BOARD variable undefined: Using CIAA-NXP as default board, qspi flash defined!
none separate
cortex_m reset_config vectreset
Info : clock speed 2000 kHz
Info : JTAG tap: lpc4337.m4 tap/device found: 0x4ba00477 (mfg: 0x23b, part: 0xba00, ver: 0x4)
Info : JTAG tap: lpc4337.m0 tap/device found: 0x0ba01477 (mfg: 0x23b, part: 0xba01, ver: 0x0)
Info : lpc4337.m4: hardware has 6 breakpoints, 4 watchpoints
Info : lpc4337.m0: hardware has 2 breakpoints, 1 watchpoints

./bin/gcc-arm-none-eabi-4_9-2015q1/bin/arm-none-eabi-gdb

Va a mostrar algo como

GNU gdb (GNU Tools for ARM Embedded Processors) 7.8.0.20150304-cvs
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying" and "show warranty" for details.
This GDB was configured as "--host=i686-linux-gnu --target=arm-none-eabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from out/bin/encoder.axf...done.
(gdb)

Hay que ingresar:

(gdb) target remote localhost:3333

Mostrará algo como

Remote debugging using localhost:3333
ResetISR () at ./externals/drivers/cortexM4/lpc43xx/src/cr_startup_lpc43xx.c:134
134	void ResetISR(void) {
(gdb)

y simultáneamente, en la terminal de OpenOCD, se verá:

Info : accepting 'gdb' connection on tcp/3333
Reset Halt, due to gdb attached...!
Info : JTAG tap: lpc4337.m4 tap/device found: 0x4ba00477 (mfg: 0x23b, part: 0xba00, ver: 0x4)
Info : JTAG tap: lpc4337.m0 tap/device found: 0x0ba01477 (mfg: 0x23b, part: 0xba01, ver: 0x0)
Warn : Only resetting the Cortex-M core, use a reset-init event handler to reset any peripherals or configure hardware srst support.
Warn : Only resetting the Cortex-M core, use a reset-init event handler to reset any peripherals or configure hardware srst support.
target state: halted
target halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0x1a001834 msp: 0x10008000
Error: timed out while waiting for target halted
TARGET: lpc4337.m0 - Not halted
in procedure 'reset' 
in procedure 'ocd_bouncer'
Info : Halt timed out, wake up GDB.

y tambien se pausará cualquier actividad de la placa, como mensajes que se estuvieran enviando por UART, prendido y apagado de leds o movimientos de motores.

ddd es un front end amistoso para gdb, se ejecuta en lugar de gdb en las instrucciones anteriores

ddd --debugger bin/gcc-arm-none-eabi-4_9-2015q1/bin/arm-none-eabi-gdb out/programa.axf

Igual que con gdb, la ventana de gdb hay que conectarse a OpenOCD:

(gdb) target remote localhost:3333