On 12 September 2017 at 10:47, Marius Liebenberg
<[email protected]> wrote:
> >You need a Mesa bitfile which puts UARTS on some of the 7i44 ouputs
> Does this apply to the 7i80 or 7i44?
7i80 bitfile.
> > Whatever you use, you need to find a way to work out where you are
in
> > the byte stream.
> Does this imply that the data stream on the UART is not all mine and
that there are other info being sent ?
No, it is all yours, but once your data spans multiple packets you need
to work out where you are in the byte stream. This can be done simply
by timing, if there is a longer pause between the start and end packets
than the inter-byte gap, or some protocols have byte patterns that can
not exist in the data as frame markers.
Or a state machine if the frames are predictable as mine is.
Something like this:-
> = Start of message
3 byte command ID
Data
2 byte checksum
< = End of message
Sample: >0011C2<
> Does the mesa_uart.comp serve as an example only or is it a
> loadable component.
If you have uarts in your firmware it should work. I have used a very
similar component to send data from an Arduino to a Mesa card.
That is interesting and might open a whole lot of scope.
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916
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