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Re: [avr-gcc-list] Global variables and ISRs ???

From: Vincent Trouilliez
Subject: Re: [avr-gcc-list] Global variables and ISRs ???
Date: Wed, 07 Sep 2005 10:34:56 +0200

> There is a problem in your code also - you are not making
> flag=0 after you send back the character. HTH.
> Nayani

Hi Nayani, no it's not a problem at all, it only means that it would
react only once, which was all I wanted/needed it to do in order to
prove that ISR to main communication was working ! ;-)
This particular dirty tiny piece of code had no other interest but do
what it says in it : send a character once a character has been received
and stop there, to prove things. And it did, thanks to "volatile" !
I have now dug out my 'proper' program with the buffer etc, and it's all
working perfectly now :-)



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