[sdiy] More AVR code

[patchell]

    I just posted the Recieve UART interrupt code, for those who are
interrested...

    I had a much more difficult time getting the code to work, but, it
was because the first code I wrote had a typo I missed.  When I tried to
transmit just one character, all heck would break loose.  I kept
checking and rechecking the code, made little changes trying to track
down the problem.  I finally looked in the assembly output, and found
the problem there.  The function Disable() (which disables global
interrupts) was implemented like this:

    SREG &= ~80

    Instead of like this:

    SREG &= ~0x80

    (I have reposted the original code with the correction).  It makes a
heck of a lot of difference in the way the code works...also one of my
most common typos....

    Anyway, that will probably be all for today...time to go operate on
the LA&SL RR...

--
 -Jim
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* Visit:http://www.silcom.com/~patchell/
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*I'm sure glad Merry Christmas comes just once a year
* -Yogi Yorgensen
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