My application uses a DS1820 (onewire interface) on parasite power.
Without parasite power (3rd wire connected to +5V), it works fine but I get 00AAh reading when using parasite power.
Some questions :
- Which pullup output port setting is used by the OneWire driver ?
- Is it possible to instruct the OneWire driver to pull the output port high during a long(er) time interval ? (if yes, how ?)
- Any tips on how to solve this problem ?