I'm trying to get rid of all remaining instances of "slave" in the fwupd codebase. The advice is primary and secondary, but for i2c that's just not accurate as it is the master _telling_ the slave what to do, rather than the slave being a fallback. Other ideas welcome too!
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So a master is basically the transmitter? And the slave is the receiver?
The "master" initiates the communication and the "slave" answers. Both transmit and receive, both can reject a transmission of the other side, and both control the speed/clock of the communications (but in different ways). So the master/slave terminology is *terrible*.
