Slave on Digistump ATTiny85 (rev.3, china)

orgua / OneWireHub

OneWire slave device emulator

GNU General Public License v3.0

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Slave on Digistump ATTiny85 (rev.3, china) #81

Closed joachim198 closed 4 years ago

joachim198 commented 4 years ago

I had problems using onewirehub on my chinese Digistump. Pin 3 & 4 were not working for onewire (USB ports). Pin 5 was configured as reset. (You can try to pulldown Pin5 with a 220Ohm resistor to ground, if the program stops "voila!" its a reset). Pin 0 and 2 are in usage with I2C over tinyWireM. So Pin1 was the only left, but it only worked when removing the led connected to Pin1. And now it works! Thanks a lot for this library! main.txt

eigenein commented 4 years ago

Hi @joachim198,

I'm trying to implement a similar thingy and struggling with my master not being able to recognise my slave. Since you managed to get it working, could you share more details please?

Which particular board frequency have you used?
Is it USB-synced? Because I'm suspecting some timing issues
You mentioned USB pins didn't work for you. Was it because of a live USB connection or disregardless of this?

orgua commented 4 years ago

hi @eigenein: a forum would be a better starting-point for this kind of development, because it is not software-related. There is a general instruction on the main readme.md on https://github.com/orgua/OneWireHub and also some hints for attiny: use pin2 or pin3 for Attiny, source: https://github.com/gioblu/PJON/wiki/ATtiny-interfacing