Pocket Beagle 2 - PRU

General Discussion
1

Hi,

I’ve got a XDS200 JTAG Emulator connected to my Pocket Beagle 2. I’ve created the usual ‘toggling-pin’ app in CCS to test it. I can build and run the program on PRU0 and I can see that it’s running by single-stepping it. What I can’t figure out is how to ‘connect’ the PRU to the output pins. Is there some script that is required?

Regards, Mike.

2

Usually use R30 and R31 for doing output pins. You’ll need to enable in the device tree (or if raw metal by setting the right mux modes of the pin). I did a device tree here:

1 Like
3

Thanks Dave.

Linux is not running - I’m going bare-metal on this with the JTAG connected to the PRU.

When I did a similar thing on the Beaglebone Black there was some *.GEL files required. Also there was a bit of javascript to run.

4

Read up on pinmux in the TRM then. Or use SysConfig that will give you the code to set pinmux for the PRU.