Help me

[ludoiphone]

Hello, I am French: so I translate with Google.

your state machine interests me

I'm new to the world of python programming for my raspberrypi (4), and I would like to create a state machine for my reversible air conditioning (I created the code in C for arduino). I would like to have an example of a state machine that manages gpios (input, output), end to the extent possible and if you have a bit of time to give me. I learn quite quickly. the link of my machine has state C:

https://wokwi.com/projects/383798765269867521

[fgmacedo]

I don't know much about low-level APIs or how to use raspberry pi to control the hardware GPIO...

Without entering the details, a high-level approach could be to simply wrap the GPIO interface into the callbacks available:

import RPi.GPIO as GPIO
from statemachine import StateMachine, State, Transition


GPIO.setmode(GPIO.BCM)
AC_POWER_PIN = 17  # Example GPIO to turn on/off the air conditioner

# Configure the GPIO
GPIO.setup(AC_POWER_PIN, GPIO.OUT)


def gpio_turn_ac_on():
    GPIO.output(AC_POWER_PIN, GPIO.HIGH)
    print("GPIO: On.")

def gpio_turn_ac_off():
    GPIO.output(AC_POWER_PIN, GPIO.LOW)
    print("GPIO: Off.")


# Classe da Máquina de Estados
class AirConditionerStateMachine(StateMachine):
    off = State(initial=True)
    on = State()

    turn_on = off.to(on, on=gpio_turn_ac_on)
    turn_off = on.to(off, on=gpio_turn_ac_off)


if __name__ == "__main__":
    ac = AirConditionerStateMachine()

    try:
        print(f"Current state: {ac.current_state.name}")

        ac.turn_on()
        print(f"Current state: {ac.current_state.name}")

        ac.turn_off()
        print(f"current state: {ac.current_state.name}")
    finally:
        GPIO.cleanup()