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# OMGS3 Helper Library
# MIT license; Copyright (c) 2024 Seon Rozenblum - Unexpected Maker
#
# Project home:
# https://omgs3.io
# Import required libraries
from micropython import const
from machine import Pin, I2C
from max17048 import MAX17048
import time
# Initialize I2C bus
fg_i2c = I2C(0, scl=Pin.board.I2C_SCL, sda=Pin.board.I2C_SDA)
# Create an instance of the MAX17048 class
max17048 = MAX17048(fg_i2c)
# Helper functions
def get_bat_voltage():
"""Read the battery voltage from the fuel gauge"""
voltage = max17048.cell_voltage
print(f"Bat Voltage: {voltage}V")
return voltage
def get_state_of_charge():
"""Read the battery state of charge from the fuel gauge"""
soc = max17048.state_of_charge
print(f"State of Charge: {soc}%")
return soc
def get_vbus_present():
"""Detect if VBUS (5V) power source is present"""
return Pin(Pin.board.VBUS_SENSE, Pin.IN).value() == 1
def set_pixel_power(state):
"""Enable or Disable power to the onboard NeoPixel to either show colour, or to reduce power for deep sleep."""
Pin(Pin.board.RGB_PWR, Pin.OUT).value(state)
# NeoPixel rainbow colour wheel
def rgb_color_wheel(wheel_pos):
"""Color wheel to allow for cycling through the rainbow of RGB colors."""
wheel_pos = wheel_pos % 255
if wheel_pos < 85:
return 255 - wheel_pos * 3, 0, wheel_pos * 3
elif wheel_pos < 170:
wheel_pos -= 85
return 0, wheel_pos * 3, 255 - wheel_pos * 3
else:
wheel_pos -= 170
return wheel_pos * 3, 255 - wheel_pos * 3, 0
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