[ECOS] not able to connect to gdb with redboot

[Gary Thomas]

On 27-Jun-2001 Rajeev murthy wrote:
> hello,
>    i have redboot on my board (a proprietory one with a Samsung microcontroller with an  ARM
> core). i understand that with redboot on my board i can get source level debugging by connecting
> to GDB via redboot.
>    i am just not able to get GDB connect to my board. i tried all these things
> 1.target rdi /dev/ttyS0
> 2.target remote /dev/ttyS0
> 3.target rdp /dev/ttyS0
>   what is the gdb looking for to connect ?
>  i have set the baud rate to match my board's.
>  is a serial connection with the host and the target board sufficient for gdb to connect with
> redboot on the board ?
>   when i type $g#67 , i get a display of the registers which means the gdb stubs are working.
>  but i would prefer to debug with insight.
> please let me know where i'm going wrong and 
> what i should do to connect to GDB?

Use 'tar remote /dev/ttyS0' to connect via GDB.

Make sure that you disconnect from RedBoot (shutdown your minicom or hyperterm),
otherwise GDB will get confused.

If it still doesn't work, try:
  (gdb) set remotedebug 1
  (gdb) tar rem /dev/ttyS0