micropython-vibrating-alarm/vibrating_alarm_m5stickc.py

"""
tested on uiflow for stickc v1.8.1
"""

# pylint: disable=import-error
import json

import m5ui
import machine
import micropython
import utils
from m5stack import axp, btnA, btnB, lcd

FONT = lcd.FONT_DejaVu40
DEFAULT_FONT_COLOR = lcd.WHITE
ALARM_TIME_PATH = "alarm.json"
SCREEN_WIDTH, SCREEN_HEIGHT = lcd.winsize()

m5ui.setScreenColor(0x000000)  # clear screen

print("battery:", axp.getBatVoltage(), "V")

# > [contradictory to] official micropython documentation,
# > to set RTC, use particular tuple (year , month, day, week=0, hour, minute, second, timestamp=0)
# https://community.m5stack.com/topic/3108/m5stack-core2-micropython-rtc-example
rtc = machine.RTC()
# https://github.com/m5stack/UIFlow-Code/wiki/M5UI#textbox
clock_text_box = m5ui.M5TextBox(
    SCREEN_WIDTH - 1, 0, "HH:MM", FONT, DEFAULT_FONT_COLOR, rotate=90
)
clock_update_timer = machine.Timer(0)
clock_update_timer.init(
    period=10000,  # ms
    mode=machine.Timer.PERIODIC,
    callback=lambda t: clock_text_box.setText(
        "{:02d}:{:02d}".format(*rtc.datetime()[4:6])
    ),
)

if not utils.exists(ALARM_TIME_PATH):
    with open(ALARM_TIME_PATH, "w") as alarm_time_file:
        json.dump({"hour": 0, "minute": 0}, alarm_time_file)
with open(ALARM_TIME_PATH, "r") as alarm_time_file:
    alarm_time = json.load(alarm_time_file)
alarm_hour_text_box = m5ui.M5TextBox(
    SCREEN_WIDTH // 2,
    0,
    "{:02d}".format(alarm_time["hour"]),
    FONT,
    DEFAULT_FONT_COLOR,
    rotate=90,
)
m5ui.M5TextBox(SCREEN_WIDTH // 2, 53, ":", FONT, DEFAULT_FONT_COLOR, rotate=90)
alarm_minute_text_box = m5ui.M5TextBox(
    SCREEN_WIDTH // 2,
    66,
    "{:02d}".format(alarm_time["minute"]),
    FONT,
    DEFAULT_FONT_COLOR,
    rotate=90,
)
menu_position = 0  # pylint: disable=invalid-name


def update_menu(event_arg: None):
    # pylint: disable=unused-argument; callback
    alarm_hour_text_box.setColor(
        lcd.GREEN if menu_position == 1 else DEFAULT_FONT_COLOR
    )
    alarm_minute_text_box.setColor(
        lcd.GREEN if menu_position == 2 else DEFAULT_FONT_COLOR
    )


def button_a_pressed():
    global menu_position  # pylint: disable=global-statement,invalid-name
    menu_position = (menu_position + 1) % 3
    # https://docs.micropython.org/en/latest/library/micropython.html#micropython.schedule
    micropython.schedule(update_menu, menu_position)


def button_b_pressed():
    global menu_position  # pylint: disable=global-statement,invalid-name
    if menu_position == 1:
        alarm_time["hour"] += 1
        alarm_hour_text_box.setText("{:02d}".format(alarm_time["hour"]))
    elif menu_position == 2:
        alarm_time["minute"] += 1
        alarm_minute_text_box.setText("{:02d}".format(alarm_time["minute"]))
    # TODO persist alarm time
    # micropython.schedule(update_menu, menu_position)


btnA.wasPressed(button_a_pressed)
btnB.wasPressed(button_b_pressed)

# TODO https://docs.micropython.org/en/latest/library/machine.WDT.html#machine-wdt
# TODO https://docs.micropython.org/en/latest/esp8266/tutorial/powerctrl.html#deep-sleep-mode