Pico Soft timer Method ...

[thierryppp]

Hello,
I have done a micropython (Pico) code to send commands to DFPlayer.
Commands generate by a infrared remote control (lib from Peter Hinch) and i have added a remote wifi control with send exactly the same value like infrared remote.
All is working you can send commad to play music.

I wanted to add a a function to play track > 10 to 99. For that i looked at how it works on the TV ?.
I send key to check_value() i record the first number track (key_1) then i start a soft timer for 2 seconds.
If I receice a second number track (key_2) the new number track is key1*10+key_2 else key_1.

key_1 = None
key_2 = None
## ------------------------------------------------------------------------
def check_value(key):
    global key_1, key_2         ## les keys
    if key_1 or key_1 == 0:   ## if you have key_1 ou key_1 = 0       
        key_2 = key                ## save key2
    else:                                ## sinon
        key_1 = key                ## save key_1 and start soft timer one_shot for 2 seconds
        soft_timer = Timer(mode=Timer.ONE_SHOT, period=2000, callback=interruption_handler)

def interruption_handler(pin_timer):
    global key_1, key_2   ## les keys    
    if key_2 or key_2 == 0:   ## if 2 keys ==> key_final = key_1*10 + key_2
        key_final = key_1 * 10 + key_2
    else:
        key_final = key_1    ## else one key  key_final = key_1
    
    key_1 = None
    key_2 = None

    ## play_track de 1 à 99
    retour = df.play_track(key_final)

All is working if you use the remotes normally. But there is a little problem when you sent several keys quickly. (key_1 is never None)

Is my method good and how can I correct it?

Thanks,
Thierry.