I don't think you can tri-state PRU output GPO. But you can hook external buffer (e.g. 74HC245) and dedicate one PRU GPO for output enable.
Regards, Dimitar On Thursday, January 16, 2020 at 6:39:20 PM UTC+2, TJF wrote: > > There's no supervisor mode for the PRU. > > There's no tri-state-mode for AM335x GPIO. > > In order to change direction for a pin on a GPIO-SS, it needs a write > access to its OE register. The PRU can do that. > > Find an example at > https://github.com/DTJF/libpruw1/blob/master/src/bas/w1_prucode.p, which > is a driver for a one-wire (w1) bus, reading and sending data on a single > GPIO line for multiple divices. The library documentation is at > http://users.freebasic-portal.de/tjf/Projekte/libpruw1/doc/html/ > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/24387fa7-d9b6-4a64-82d1-efec85b6d6fc%40googlegroups.com.
