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Re: guide for running eCos in ARM PID
- From: Jonathan Larmour <jifl at eCosCentric dot com>
- To: Young Jay <young_jay at sohu dot com>
- Cc: ecos-discuss at sources dot redhat dot com
- Date: Thu, 26 Jun 2003 07:11:33 +0100
- Subject: Re: [ECOS] guide for running eCos in ARM PID
- References: <8169880.1055742266802.JavaMail.postfix@mx28.mail.sohu.com>
Young Jay wrote:
Hello, Jonathan:
I just followed the instructions from
http://sources.redhat.com/ecos/docs-latest/user-guide/setup-arm-pid.html,
but when I progressed to make redboot written into the Flash on PID
board, I got an error message as follows: [snip]
(gdb) target rdi s=com1
RDI_open: undefined error message, should reset target
RDI_open failed
My board is properly powered up and I have connected it with a serial
cable to the host computer. Also I made correct jumper and switch set
referring to the user guide for PID board. But it seems that the
communucation channel hasn't been established. Could you tell me if
there is still something to be configured in order to program redboot
with ROM startup mode into the flash on board? Thanks a lot!
Hi, it seems no one else was able to help, and I don't really know either,
but I'll try and give you pointers: At this stage RedBoot isn't even in
the picture. You're just trying to connect using GDB to the Angel ROM
monitor on the board.
I tried the GDB 5.3 (eCosCentric) with another board here and was able to
connect to Angel fine, so it isn't the GDB. If you have any ARM tools can
you see if you can connect to Angel that way to check Angel is working at all?
Perhaps it's as simple as needing to set a different baud rate? I found
RDI to be unreliable at 38400, but if I did:
set remotebaud 9600
first, it behaved better.
Worst case you have to use a PROM programmer, and put a new physical PROM
in the board.
Jifl
--
eCosCentric http://www.eCosCentric.com/ The eCos and RedBoot experts
--[ "You can complain because roses have thorns, or you ]--
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