How to send debug messages from target to OPENOCD to GDB

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1

Hi,

I updated my OpenOCD version and noticed that the help

now contains the 'target_request debugmsgs" command to

enable or disable the reception of debug messages sent from the

target.

I would like to know what is the format of these debug messages

that I should send from my ARM7 target using the DCC register.

Best regards,

L3on.

2

Hi,

you can find some example code at http://mmd.ath.cx/openocd/dcc_debug.c

There’s also some documetation as part of my master’s thesis but I’m not sure when this is going to be released.

Regards,

Dominic

3

When i use the target_request debugmsgs commad, i got the following warning message.

Info: openocd.c:93 main(): Open On-Chip Debugger (2007-09-05 09:00 CEST)

Info: configuration.c:50 configuration_output_handler(): Command target_request debugmsgs not found

Warning: arm7_9_common.c:734 arm7_9_assert_reset(): srst resets test logic, too

Info: target.c:232 target_init_handler(): executing reset script ‘.\prj\openocd_romd.script’

When i call dcc_debug.c APIs, there is output in GDB window

4

Hi,

Just for your information, I changed my debug message

function accordingly to the C source indicated and it

seems to be working OK. The messages sent appear

in the gdb console.

Thanks and best regards,

L3on.

5

Could you give me more details. Actually i haven’t seen any message in gdb window. I Just got warning msg on dos prompt like

Info: configuration.c:50 configuration_output_handler(): Command target_request debugmsgs not found

If you can see ur debug msg in gdb windows, give me details, like

  1. where did u call the target_request debugmsgs command ( cfg, script or gdb file)

  2. which openocd version u r using now, I am using "Open On-Chip Debugger (2007-09-05 09:00 CEST) " september relase ode

Your information will be very helpfull to me.

6

The “target_request debug_msgs <enable|disable>” command requests redirection of debug messages for the current target to the current command context. It is useless (and therefor unavailable) in configuration files, because that command context isn’t available later.

Instead, you should call the …debug_msgs… command from within a telnet or GDB session, to request output of debug messages in that session.

Best regards,

Dominic

7

Dear Dominic,

Thank you for your information.

When i call that command in gdb session, it works, i can see debug message.

Thanks

Karun

8

Please help me I am trying to use this ability but useless…

What are you dooing step by step to snd message from MC to IDE?