Hi, "Mark M. Hoffman" <mhoffman at lightlink.com> writes: > If you can't read the line state... well, that's not actually a proper > I2C bus anyway. Actually you only have to be able to read SDA state, it might not be true WRT SCL. I think most implementations use a single master and a fixed access timing and thus only read SDA (SCL can as well be a simple 2-state normal output from master instead of open drain/collector or 3-state). I'm not sure initializing the bus (in terms of ~ handshaking) belongs to hw driver and not to the algorithm but such is live. Thanks. -- Krzysztof Halasa
