July 15, 2026
The Dallas 1-wire protocol saga -- DS1994 test and conclusion
I wrote a diagnostic to test each of the 16 pages one by one.
I read (and saved) the original contents.
Then I wrote and checked first a pattern of 0x55 bytes and
then a pattern of 0xaa bytes.
Then I wrote (and checked) the original contents.
This worked fine for all 16 pages. I concluded that this device
is fully functional.
Conclusion
I was tempted to wire up my MAX31850 devices and work up a driver
for them, but decide that this was enough for now and that I would
wrap this up and move on to other things.
The final code is here as part of my Kyu project:
Have any comments? Questions?
Drop me a line!
Tom's software pages / tom@mmto.org