To do pin muxing, look at the pin names and modes in the BeagleBone reference manual:
Then, locate the pin you want to map. Find the name. Find the mode you want to set.
The name is the name that you find in the table for mode 0 in the reference manual.
In this example, we want to set mode to 6 for pin 14 on connector P9 (named gpmc_a2) to get the signal we want (ehrpwm1A_mux1) out :
The value that is written is a combination of both the mode number and some flags:
From just a quick test, it seems the pull-up resistor is about 34kOhm in size.
Using the BeagleBone >