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 _______________________________________________ AVR-chat mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/avr-chat
