battery.py

'''
Copyright (c) 2020, Pycom Limited.
This software is licensed under the GNU GPL version 3 or any
later version, with permitted additional terms. For more information
see the Pycom Licence v1.0 document supplied with this file, or
available at https://www.pycom.io/opensource/licensing
'''

import machine
from machine import Timer,Pin
import time

__version__ = '1'
"""
__version__ = '1'
* first release

"""
class Battery:
    def __init__(self):
        self.init = False
        self.adc = machine.ADC()
        self.apin = self.adc.channel(pin='P16', attn=self.adc.ATTN_11DB)
        self.val = self.apin.voltage()
        #print("bat:", self.val)

    def get_battery_level(self):
        self.val = self.apin.voltage()
        # print("bat:", self.val)
        battery_percentage = self.val/3300
        # if battery_percentage <= 0.25:
        #     battery_percentage = 0.25
        # elif battery_percentage > 0.25 and battery_percentage <= 0.5:
        #     battery_percentage = 0.5
        # elif battery_percentage > 0.5 and battery_percentage <= 0.75:
        #     battery_percentage = 0.75
        # elif battery_percentage <= 1:
        #     battery_percentage = 1
        return int(battery_percentage*100)

if __name__ == "__main__":
    b = Battery()
    while True:
        print(time.time()/60, b.get_battery_level())
        for s in range(60):
            time.sleep(1)