Author Topic: Different BBB String Output choices on F8-PB+  (Read 297 times)

Offline JonB256

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Different BBB String Output choices on F8-PB+
« on: November 24, 2018, 06:34:08 AM »
Dan, lost in the haze of time and old postings, I'm unsure of what outputs do what now.
If there is a good cheat sheet, I didn't find it. :(

When I choose F8-B (No Serial) I get outputs 9 thru 20 showing, corresponding to the 3 RJ-45 jacks on the board.
I'm assuming those 3 will drive 3 Differential Receivers?  (of the 3, do any of them have GPIO sharing problems?)

When I choose F8-B (4 Serial) I get outputs 9 thru 16.
So, two ports are now Differential and one port does DMX or Pixelnet ?

and finally, F8-B (8-serial) I only get outputs 9-12.

Looking at the F8-PB+ from above, with the Fuses to the Left and RJ-45 to the right.
The bottom right RJ-45 is 9-12
Middle RJ-45 is 13-16
Top Right RJ-45 is 17-20

and how do the DMX outputs run for that same layout?

Offline dkulp

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Re: Different BBB String Output choices on F8-PB+
« Reply #1 on: November 24, 2018, 07:14:33 AM »

There are no GPIO0 issues on the F8-PB until you hit the expansion port.  The differentials are fine.


When set to 8 serial, the middle port has 1-4 and the right port is 5-8.   When set to 4 serial, the right port is the DMX port.




Offline JonB256

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Re: Different BBB String Output choices on F8-PB+
« Reply #2 on: November 24, 2018, 09:08:11 AM »
Great. Wasn't planning to use the expansion port. Just the RJ-45s (for 1 DMX and 2 differentials) and maybe some Pixel outputs.

 

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