[GreenKeys] RPI pico & low baud rates.

[epvgk at limpoc.com]

On Fri, Jul 01, 2022 at 07:11:28PM -0400, Michael Katzmann wrote:
> I was looking at the data for the RPI Pico yesterday (as they've just
> released a $6 WiFi version).
> It looks like the UARTs can do low baud rates. Has anyone here used it at
> 45.45 or 50 Bd ?
> The USB interface is limited to v1.1 but at 50 Bd that shouldn't be a
> problem 8-)
> 
> Michael - NV2Z


I've played with it. The hardware can do it but you need to make a change to the
(i think) pl011 device driver source in the kernel to make it possible to set your
chosen slow baud rate in place of one of the standard ones. 

I've attached the linux kernel patch I used for an older linux version but I doubt 
much has changed since. 

eric

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