[ECOS] guide for running eCos in ARM PID

Young Jay young_jay@sohu.com
Fri Jun 27 02:25:00 GMT 2003


Thank you very much for your suggestions. I think I did just try to connect the Angel ROM monitor on the board using GDB. I also tried with setting the baudrate as 9600 and some else, with no effect. And now I am intending to make RAM startup RedBoot work by means of a multi-ICE. 

-----  Original Message  -----
From: Jonathan Larmour 
To: Young Jay 
Cc: ecos-discuss@sources.redhat.com 
Subject: Re: [ECOS] guide for running eCos in ARM PID
Sent: Thu Jun 26 14:11:33 CST 2003

> 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 ]--
> --[  can rejoice because thorns have roses." -Lincoln   ]-- Opinions==mine
> 


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