Re: GNAT.Serial_Communications

[Brian Drummond <brian@shapes.demon.co.uk>]

On Sat, 16 Apr 2011 03:33:39 -0700, tonyg wrote:

> Just found the stty -a setting which gives me all settings, I think that
> was maybe the full out put you were talking about before
> 
> out put with minicom
> 
> cs8 hupcl -cstopb cread clocal -crtscts ignbrk -brkint -ignpar -parmrk

> Output with ada program
> 
> -parodd cs8 -hupcl -cstopb cread clocal crtscts -ignbrk -brkint -ignpar

But here, Minicom has -crtscts, Gnat has crtscts
which is pointing at a difference in the handshaking.

I bowed out of this thread earlier because I have no experience with USB 
serial interfaces, or the specific Gnat library.
But this does look like you have to find a way to turn RTS/CTS 
handshaking off.

> Whoever thought a serial port did so much?

heh, there are so many combinations it used to be the norm to hack serial 
interfaces with a soldering iron. If all else fails, you can always short 
pins 4 and 6 at t'other end (assuming a traditional 25 pin D connector) 
to fake the handshaking. Not recommended with a USB port...

- Brian