I'm curious about the output pins used in the device overlay here:
https://github.com/BelaPlatform/Bela/blob/master/resources/BB-BONE-PRU-BELA-00A0.dts
specifically:
"P8.41", / pru1: pr1_pru1_pru_r30_4 /
"P8.42", / pru1: pr1_pru1_pru_r30_5 /
"P8.43", / pru1: pr1_pru1_pru_r30_2 /
"P8.44", / pru1: pr1_pru1_pru_r30_3 /
"P8.45", / pru1: pr1_pru1_pru_r30_0 /
"P8.46", / pru1: pr1_pru1_pru_r30_1 /
What are they used for?
I've been trying to squeeze some extra outputs out in order to drive a VFD and I saw that these pins aren't used in the schematic but I do see that they're allocated here for outputs. Is this some way to pass data between the PRU and the CPU? Or something else?
Thanks,
Alex