hi The BBB has a kernel 4.4 and has a overlay 'universaln' loaded by default. I can see there is ttyO[0-4] unuder /dev/. Then I did 'sudo config-pin P9.13 uart && sudo config-pin P9.11 uart ' and the uart function works well.
I wonder how do I enable the RS485 ? I only see there is a overlay 'BB-UART4-RS485' but when I tried to load it, it said 'file exist'. I read at the source dtbo and there is a pin P9.27, what is that? I want to connect to a device which has rx, tx and gnd, using MODBUS (half-duplex). Thanks /Peilang -- 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/0c910a23-af19-4756-91d4-da9ee7c9dde6%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
