AVR-Chat

On Aug 8, 2004, at 10:10 PM, Brian Dean wrote:
>
> This is very strange.  Normally, if the programmer is not responding
> at all, you'll see the error message:
>
>    avrdude: serial_recv(): programmer is not responding
>
> This happens if a timeout occurs while waiting for a response from the
> programmer (butterfly in this case).  However, if results are
> received, each "avrdude: Recv:" line above would display each byte
> that was received.  But there are none.  And I don't see a code-path
> such that it would not print out the received bytes, nor display an
> error message.

I noticed that, but wondered why it seemed to keep going as well...

>
> Whoa - wait a minute.  A different serial port module is used on the
> Windows platform and uses the native Windows calls, there there might
> be something funny going on.  I was looking at the Mac/Unix posix
> serial port code when I made my statement above.
>
> Looking at the Windows-specific code, it appears that a call to the
> native Windows routine to read the data from the COM port is returning
> without producing an error message, but not returning the data either.
> I'm not at all familiar with native Windows APIs so I'm going to have
> to defer you to the AVRDUDE mailing list on this one
> (avrdude-dev@nongnu.org).  Several of the AVRDUDE contributers support
> the Windows version and they should be able to help figure this out.

Ok, I can try that.

>
> If you have a Unix box (MacOS X, FreeBSD, or Linux) that you can try
> it out on, that would be most useful, as that would narrow the problem
> down to either Window's-only, or something that affects all our
> platforms.  If you have a FreeBSD box, you should be able to build the
> port easily (cd /usr/ports/devel/avrdude && make install).  Building
> on Linux is not quite as easy, but just download the tar file from the
> project area on Savannah, extract it, type 'configure && make
> install'.  If you have a MacOS X box, it builds similar to that on
> Linux, but if you need a MacOS X binary, I can send you one pre-built
> if that helps (I use a MacOS X).

I don't have FreeBSD at the moment, I gave up that partition to backup 
my iTunes (15GB) library while I was switching to the PowerBook.  I do 
have Linux on the same computer as Windows is loaded and of course, Mac 
OS X on the PowerBook, so I can give that a try.  Mac OS X satisfies 
most of my FreeBSD needs (except for a single uniform ports system) 
these days.

Thanks,
Mike