'''
Created on 1 ott 2019

@author: Emanuele Trabattoni
'''

from evdev import InputDevice, ecodes, categorize
from select import select

dev = InputDevice('/dev/input/by-id/usb-0581_0106-event-kbd')
#dev = InputDevice('/dev/input/by-id/usb-Chicony_USB_Keyboard-event-kbd')
dev.grab()

char_map = {
    458782: 1,
    458783: 2,
    458784: 3,
    458785: 4,
    458786: 5,
    458787: 6,
    458788: 7,
    458789: 8,
    458790: 9,
    458791: 0,
    458792: "Invio"
}
def get_numero(dev):
    stringa = ""
    last = None
    while True:
        r,w,x = select([dev], [], [])
        for event in dev.read():
            if event.code == 4 and event.type==4:
                if last is None:
                    last = char_map[event.value]
                    if last != "Invio":
                        stringa += str(last)
                    else:
                        yield stringa
                        stringa = ""
                else:
                    last = None

for x in get_numero(dev):
    print(x[0:12])