https://github.com/raspberrypi/pico-sdk/blob/6a7db34ff63345a7badec79ebea3aaef1712f374/src/rp2_common/hardware_vreg/include/hardware/vreg.h#L26 I want to set the voltage to 0.80V but realize its not in there. The datasheet says (Table 189. VREG Register): `0000 to 0101 - 0.80V` 
pico-sdk/src/rp2_common/hardware_vreg/include/hardware/vreg.h
Line 26 in 6a7db34
I want to set the voltage to 0.80V but realize its not in there.
The datasheet says (Table 189. VREG Register):

0000 to 0101 - 0.80V