Helltec Wiress Paper battery voltage incorrect.

[RichardPar]

Hi there,

On the Wireless E-INk display, the Battery voltage is reported incorrectly . The reference is 4.2V. Below line gives me the correct mV

uint32_t voltage = (0.842 * (4.2 / 1024.0) * raw) * 1000;

Richard

[pki791]

We fixed it somehow together here #1584