Open OCD in eclipse, appears to run but nothing happens.

Development Boards MicroMod
1

Hi, I am newbie to ARM and Open OCD, etc.

I have been working through the jlynch tutorial:

“Using Open Source Tools for SAM7 Cross Development”

OpenOCD is running inside Eclipse using the Zylin CDT (on Windows XP).

I have successfully compiled some example code: “demo_at91sam7_flash_blink” and downloaded the binary to the device: AT91SAM7S256 using the SAM-BA bootloader utility. The program runs and the LED is flashing.

I am using Olimex ARM-USB-OCD with the development board SAM7-P256. I copied the following config file the berlios website:

The following script was used with an Olimex ARM-JTAG-OCD and a AT91SAM7S64 cpu: 
#daemon configuration
telnet_port 4444
gdb_port 3333 

#interface
interface ft2232
ft2232_device_desc "Olimex OpenOCD JTAG A"
ft2232_layout olimex-jtag
ft2232_vid_pid 0x15BA 0x0003
jtag_speed 0
jtag_nsrst_delay 200
jtag_ntrst_delay 200 

#use combined on interfaces or targets that can't set TRST/SRST separately
reset_config srst_only srst_pulls_trst 

#jtag scan chain
#format L IRC IRCM IDCODE (Length, IR Capture, IR Capture Mask, IDCODE)
jtag_device 4 0x1 0xf 0xe 

#target configuration
daemon_startup reset 

#target <type> <startup mode>
#target arm7tdmi <endianness> <reset mode> <chainpos> <variant>
target arm7tdmi little run_and_halt 0 arm7tdmi
run_and_halt_time 0 30


# flash-options AT91
working_area 0 0x00200000 0x4000 nobackup
flash bank at91sam7 0 0 0 0 0


# Information: 
# erase command (telnet-interface) for complete flash:
# flash erase <num> 0 numlockbits-1 (can be seen from output of flash info 0)
# SAM7S64 with 16 lockbits and bank 0: flash erase 0 0 15
# set/clear NVM-Bits:
# at91sam7 gpnvm <num> <bit> <set|clear>
# disable locking from SAM-BA:
# flash protect 0 0 1 off



# For more information about the configuration files, take a look at:
# http://openfacts.berlios.de/index-en.phtml?title=Open+On-Chip+Debugger

In my eclipse Debug configuration, I have two windows for entering debug commands. In the “Initialise” window I have entered:

target remote localhost:3333
monitor soft_reset_halt
monitor arm7_9 force_hw_bkpts enable
symbol-file main.out
thbreak main
continue

I have left the “Run” window empty.

When I run the debugger configuration, my Console window displays: “(gdb)” and then clears. Eclipse indicates that OpenOCD is running but nothing is happening. There are no breakpoints to view and there is no further output in the console window.

I would be grateful for your advice.

Thanks

Mark

capture.pdf (91.5 KB)

2

Hi Sparkymark567.

The most recent version of the Zylin CDT has the commands separated into two screens (initialize and run) as you have pointed out. I’m working on a revision of my tutorial to address this change.

I suggest that you put the command TARGET REMOTE LOCALHOST:3333 into the initialize screen and put the rest of the commands into the “Run” screen.

Try that and report back.

Cheers,

Jim Lynch

3

Thanks for your reply.

Unfortunately I could not get this to work, probably because I have done something else wrong somewhere.

I have noticed a few differences between the CDT and the tutorial:

  1. In the “create, manage and run configurations window”, the left hand panel displaying the tree list, now has 2 options: <Embedded Debug (Cygwin)> and <Embedded Debug (Native)>. I selected .

  2. In the tab there is an option to select a GDB Command file. I left this blank.

  3. In the tab, there is a list box to select the GDB command set, there is however only one option .

  4. In the tab, there is a list box to select a Protocol, the options are: . I used the default mi option.

  5. As your post. I have put: “target remote localhost:3333” under intialise and moved the remaining commands to ‘Run’.

I guess that most of these will probably not affect your tutorial very much. However, I can still not get the degugger to run.

I use the following procedure:

  1. Cycle power to the board.

  2. Run OpenOCD as an external tool.

  3. Launch the Debugger.

When I run Open OCD I get the following output on the Console:

Info:    openocd.c:82 main(): Open On-Chip Debugger (2006-10-12 18:00 CEST)
Info:    configuration.c:50 configuration_output_handler(): Command The not found
Warning: arm7_9_common.c:683 arm7_9_assert_reset(): srst resets test logic, too

I’m not sure whether the console output is the correct one, but OpenOCD appears to be running.

If I launch the debugger, I get an error message as follows:

“Errors exist in a required project. Continue Launch? ”. If I select I end up in a state where Open OCD and the Debugger both appear to be running, but nothing else happens.

Regards

Mark

4

It appears I had an error in config file:

If I run OpenOCD, the output is now:

Info:    openocd.c:82 main(): Open On-Chip Debugger (2006-10-12 18:00 CEST)
Warning: arm7_9_common.c:683 arm7_9_assert_reset(): srst resets test logic, too

I think this output is the correct one, but I still can’t get the debugger to run at the moment.