Brunello:
quindi un indirizzo teorico ce l'ha, anche se e' 000
Azz ... è una bella porcheria ...
... 000 è un indirizzo riservato del bus I2C ... è il "general call address" (... tipo broadcast ;)) ed è usato per varie funzioni, incluso il "Software Reset" :~ :~ :~
Per precisione :
"The general call address is for addressing every device connected to the I2C-bus at the same time. However, if a device does not need any of the data supplied within the general call structure, it can ignore this address by not issuing an acknowledgment. If a device does require data from a general call address, it acknowledges this address and behave as a slave-receiver. The master does not actually know how many devices acknowledged if one or more devices respond. The second and following bytes are acknowledged by every slave-receiver capable of handling this data. A slave who cannot process one of these bytes must ignore it by not-acknowledging."
Guglielmo