The bus converter code, 0..=15: a resolution below 8, a sample count averaged at
12 bits from 9 up.
The bus-voltage range code: 0 for 16 V, 1 for 32 V.
The shunt gain code, 0..=3, for ranges of 40, 80, 160, and 320 mV.
The operating-mode code, 0..=7.
Whether writing the register resets the part.
The shunt converter code, as busAdc.
An INA219 configuration register, field by field, each setting as the code the datasheet prints.