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rs485 driver #stm32

Arsenii Soitu
 

Hello.
Is there any driver or may be some way to use rs485 on zephyr? May be someone used zephyr for rs485 communication with RE/DE support?
Thank you
Rodrigo Peixoto <rodrigopex@...>
 

Hi Arsenii.
I have already used that with an external transceiver driving the RE/DE every time we would write to and disable it after that as a generic GPIO (output). We write the data using a regular UART driver. The RS485 part is performed by the transceiver. 

I hope it helps.
Best regards,
Rodrigo Peixoto. 

On Wed, Sep 1, 2021 at 8:35 AM Arsenii Soitu <seniasoitu@...> wrote:
Hello.
Is there any driver or may be some way to use rs485 on zephyr? May be someone used zephyr for rs485 communication with RE/DE support?
Thank you

Dave Nadler
 

Careful, while that may work in some cases,
we've always needed to implement fast control of xmit/receive switching in the driver
to avoid multiple devices sometimes trying to drive the bus.

Can any Zephyr users/developers provide further information about driver support for RS-485??

Thanks,
Best Regards, Dave

On 9/2/2021 10:03 AM, Rodrigo Peixoto wrote:
Hi Arsenii.
I have already used that with an external transceiver driving the RE/DE every time we would write to and disable it after that as a generic GPIO (output). We write the data using a regular UART driver. The RS485 part is performed by the transceiver. 

I hope it helps.
Best regards,
Rodrigo Peixoto. 

On Wed, Sep 1, 2021 at 8:35 AM Arsenii Soitu <seniasoitu@...> wrote:
Hello.
Is there any driver or may be some way to use rs485 on zephyr?
May be someone used zephyr for rs485 communication with RE/DE support?
Thank you
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