On Thursday, January 16, 2020 at 8:39:20 AM UTC-8, TJF wrote:
>
>
> 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.
>
Let me see if I have this straight, I need access to an output enable from
the PRU. The only output enabl
On Thu, Jan 16, 2020 at 11:39 AM 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.
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
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 i
