Invert polarity on UART

[DragosP]

Hello,

I need to invert the level of my UART from software, any idea how I can do that?

I'm running on BBB, Debian 8 kernel 4.4

Thank you.

[Heinz Hummel]

As far as I remember AM3358 TRM this is not possible in software.

And it is somewhat amazing this should be necessary - what kind of hardware do you try to control with the UART interface?

[Jason Kridner]

On Feb 2, 2017, at 4:37 AM, Heinz Hummel <heinz.h...@gmail.com> wrote:

As far as I remember AM3358 TRM this is not possible in software.

And it is somewhat amazing this should be necessary - what kind of hardware do you try to control with the UART interface?

Not sure if this is the case in question, but many so-called S.BUS interfaces for RC radio receivers use an inverter on the input of a UART. 

https://github.com/cleanflight/cleanflight/blob/master/docs/Rx.md

I'd guess the best solution is a soft UART on PRU, but would love to hear ideas about software bit inversion or other UART based solution. 

Am Mittwoch, 1. Februar 2017 18:51:15 UTC+1 schrieb DragosP:

Hello,

I need to invert the level of my UART from software, any idea how I can do that?

I'm running on BBB, Debian 8 kernel 4.4

Thank you.

--
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 beagleboard...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/a842d34e-a049-40b1-ae8a-2d743459b357%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.