FYI you have AVR I2C management source code in Procyon AVRLIB and in
NutOS (www.ethernut.de). I never used Procyon lib, however I sometimes
read some of the files to better understand the datasheets. We use NutOS
on some internal projects and the I2C driver is working fine.
Vincent Trouilliez wrote:
On Tue, 3 Mar 2009 05:07:26 +0100
Vincent Trouilliez <[email protected]> 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
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