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Re: [avr-chat] I2C controller: INT flag a bit leaves me confused !
From: |
Vincent Trouilliez |
Subject: |
Re: [avr-chat] I2C controller: INT flag a bit leaves me confused ! |
Date: |
Tue, 3 Mar 2009 05:21:27 +0100 |
On Tue, 3 Mar 2009 05:07:26 +0100
Vincent Trouilliez <address@hidden> wrote:
> ...but not acknoledged, 'cause I blew the
> slave (PCF 8574, I/O expander, cheap way to test that the bus was
> working, by lighting LED's via this chip) when supplying it
> accidentally with unregulated 12Volts rather than the regulated 5
> Volts, oops !!! :-O Poor slave... Will get a new one first thing
> tommorow, and hopefully everything should then be working :-)
Geez, some things just don't want to die !!!
I found a bad ground (the slave was a on dodgy solder less bread board,
not soldered on the target). I made a better ground and hey preto,
the slave now acknowledges it's address and data !
Who said electronic integrated circuits were fragile ?! ;-)
I am amazed...
--
Vince
Re: [avr-chat] I2C controller: INT flag a bit leaves me confused !, Joerg Wunsch, 2009/03/03