I2C issues

[andybarrett1]

I am still not convinced about the addressing....purely as I chase "my own" tail lots of times on similar bits of hardware.
Usually binary read from wrong end (inverted)

If you draw out what you do have .... You might just see the problem yourself. Plus it helps us help you !

[towlerg]

It still seems to me that is the slaves work individually then you must have the correct address. What RTC are you using? PCF8574 is definitely an 8 bit addressable device.

George