OpenOCD Tutorial

install deps

sudo apt-get install build-essential

sudo apt-get install autotools-dev autoconf automake libtool

sudo apt-get install texinfo libudev-dev libusb-1.0-0-dev libfox-1.6-dev

Download FTDI driver

http://www.intra2net.com/en/developer/libftdi/download.php
tar xf libftdi1-1.2.tar.bz2

HIDAPI

git clone git://github.com/signal11/hidapi.git
./bootstrap
./configure
make
sudo make install

Build and Install OpenOCD

git clone git://git.code.sf.net/p/openocd/code
cd code
./bootstrap
cd ../
mkdir ./openocd-build
cd openocd-build
../code/configure --with-ftd2xx-linux-tardir=../libftdi1-1.2 --prefix=/opt/openocd --enable-jlink --enable-ftdi --enable-stlink --enable-ti-icdi --enable-ulink --enable-usb-blaster-2 --enable-cmsis-dap --enable-bcm2835gpio
make
make install

Usage

Prepare extra OpenOCD cfg commands

create file openocd.cfg with following contents:

$_TARGETNAME configure -event gdb-attach {
   echo "Halting target"
   halt
}

Start OpenOCD server to Debug LPC11U35

sudo openocd -f interface/cmsis-dap.cfg -c "transport select swd" -f target/lpc11xx.cfg -f openocd.cfg 

Flash and Debug

• First, flash debug firmware on board

telnet localhost 4444
reset halt
flash probe 0
flash write_image erase /home/yliu/projects/ib51822/IBDAP-FW/Firmware/IBDAP/Debug/IBDAP.bin 0x0
reset
exit

• Second, debug using the commands:

target remote localhost:3333
break IBDAP.c:103
monitor reset halt
monitor reset init
continue

http://wiki.paparazziuav.org/wiki/DevGuide/GDB_OpenOCD_Debug

Breakpoint limits

set remote hardware-breakpoint-limit 4
set remote hardware-watchpoint-limit 2

gdbtui GUI debugging

http://fun-tech.se/stm32/OpenOCD/gdb.php

OpenOCD nRF51822 using IBDAP

Launch OpenOCD

$ sudo openocd -f interface/cmsis-dap.cfg -c "transport select swd" -f target/nrf51.cfg

nrf OpenOCD log

yliu@yliu-xbtu:~$ 
yliu@yliu-xbtu:~$ sudo openocd -f interface/cmsis-dap.cfg -c "transport select swd" -f target/nrf51.cfg
[sudo] password for yliu: 
Open On-Chip Debugger 0.10.0-dev-00001-g70a14db (2015-06-23-16:35)
Licensed under GNU GPL v2
For bug reports, read
    http://openocd.org/doc/doxygen/bugs.html
Info : only one transport option; autoselect 'swd'
Warn : Transport "swd" was already selected
swd
cortex_m reset_config sysresetreq
adapter speed: 1000 kHz
Info : CMSIS-DAP: SWD  Supported
Info : CMSIS-DAP: JTAG Supported
Info : CMSIS-DAP: Interface Initialised (SWD)
Info : CMSIS-DAP: FW Version = 1.0
Info : SWCLK/TCK = 1 SWDIO/TMS = 1 TDI = 1 TDO = 1 nTRST = 0 nRESET = 1
Info : CMSIS-DAP: Interface ready
Info : clock speed 1000 kHz
Info : SWD IDCODE 0x0bb11477
Info : nrf51.cpu: hardware has 4 breakpoints, 2 watchpoints
Info : accepting 'telnet' connection on tcp/4444

yliu@yliu-xbtu:~$ telnet localhost 4444
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Open On-Chip Debugger
> reset halt
target state: halted
target halted due to debug-request, current mode: Thread 
xPSR: 0xc1000000 pc: 0x000006d0 msp: 0x000007c0
> flash probe 0
Unknown device (HWID 0x00000057) 
flash &apos;nrf51&apos; found at 0x00000000<span class="redactor-invisible-space"></span>