#pragma once

// Volatge discovery. Determines what the voltage of the christmas lights is.
//
// This is done by using channel 0 of the ADC (which is on pin PA4). There is a
// voltage divider from the main power source to pin PA4 which uses a 4.7MOhm
// resistor and a 470KOhm resistor to divide the voltage by 10, which may then
// be turned into a reading on the ADC.
//
// This helps to determine if the lights being driven are WS2812b's or WS2811 as
// the latter are run on 12v and use RGB instead of GRB byte order.


#include <stdint.h>

typedef uint32_t millivolts_t;

// Returns the estimated input voltage in millivolts.
millivolts_t get_input_voltage();