fsm_actions.py

"""This module holds the actions associated to this project
"""

from utime import sleep_ms, sleep
from machine import Pin
from digital_clock import DigitalClock
from ssd1306 import SSD1306_I2C
from machine import disable_irq, enable_irq
from fsm import FSM

def read_button(pin: Pin, delay: int = 20) -> int:
    """Filters by software the noise a push_button generates

    Args:
        pin (Pin): The pin where the push button is connected
    Source:
        https://docs.micropython.org/en/latest/pyboard/tutorial/debounce.html
    """
    cur_value = pin.value()
    active = 0
    while active < delay:
        if pin.value() != cur_value:
            active += 1
        else:
            active = 0
        sleep_ms(1)
    return cur_value

def init_fsm(fsm: FSM, event: dict[str, int]) -> None:
    """Set the transition rules of the FSM to be implemented

    Args:
        fsm (FSM): A non-initialized finite state machine 
    """
    fsm.set_transition_rule(0, event['unconditional'], 1)
    fsm.set_transition_rule(1, event['default'], 1)
    fsm.set_transition_rule(1, event['press button'], 2)
    fsm.set_transition_rule(2, event['unconditional'], 1)