EBC Exercise 10b Green Wireless Pins Used

The BeagleBone Green Wireless uses some gpio pins for it wireless connection. These pins can't be used for other things.

Here is the list gather from https://github.com/RobertCNelson/bb.org-overlays/blob/master/src/arm/univ-bbgw-EW-00A0.dts#L1168

Recovering Pins
Many of these pins can be recovered, but you may loose some functionality.

P8_11, P8_16, and P8_15
Pins P8_11, P8_16, and P8_15 can be recovered, by sticking the wl1835 wifi module in 1-bit mode vs 4-bit mode.

sudo rm /lib/firmware/BB-BBGW-WL1835-00A0.dtbo sudo cp /lib/firmware/BB-BBGW-WL1835-1BIT-00A0.dtbo /lib/firmware/BB-BBGW-WL1835-00A0.dtbo

P8_12, P8_18, P8_14, P8_17 and P9_12
These pins can be recovered if you don't need the thing to which they are attached.

P8_12 = WL1835: mmc2_dat0 P8_18 = WL1835: mmc2_clk P8_14 = WL1835: Wireless enabled P8_17 = WL1835: Wireless IRQ P9_12 = WL1835: Bluetooth enabled

P8_26 and P9_30
Pins P8_26, P9_30 are "gpio hogged" at startup, not user changeable.

P9_28, P9_29, and P9_31
Pins P9_28, P9_29, and P9_31 are used by audio, which isn't actually used, but tied up.