Has anyone here had any experience of interfacing with the above Maxim 1-wire chip? I can communicate quite happily with it, I can read and write the scratchpad and read the unique ID etc.

As soon as I try to write a new secret, despite repeated readings of the applicable datasheets, I run into problems. All indications are that the Secret is not being written (DS2432 is transmitting all 1's instead of alternate 1's and 0's) despite following the datasheet.


I'll happily post code so far if anyone can help? I have little enough hair already, without pulling out more!