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From: "Gerrit van Niekerk" <gerritvn@gpvno.co.za>
To: Guillaume MENANT <guillaume.menant@geensys.com>,               gdb@sourceware.org
Date: Fri, 18 Jan 2008 11:14:00 -0000
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Subject: Re: Problem using GDB  and Eclipse with my stub
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On 18 Jan 2008 at 2:30, Guillaume MENANT wrote:


> I'm making a new topic because I had a problem in the last one (i've edited my message but it
> hasn't been seen by mailing list users) 

> I'm working on the GDB startup management in my stub. The log of the sent commands is the
> following : 

> GDB -> (command sent by GDB through Eclipse) 
> Wrapper reply -> (reply from my stub to GDB) 

> GDB ->              $Hc-1#
>  Wrapper reply ->  $+#
> Call unsupported or unrecognized command method
>  Wrapper reply ->  $#00
> GDB ->              $+#

I think you are misinterpreting the GDB commands and wrapper replies. You won't get a $+# command, 
because + (on it's own is a positive acknowledgement. In fact, the wrapper also has to send a + 
when it receives a command with a valid syntax and checksum.

This is what it *should* look like:
GDB ->              $Hc-1#nn   (where nn is the checksum)
  Wrapper ack ->  +
  Wrapper reply -> $#00 (Call unsupported or unrecognized command method)
GDB ack ->         +