serial-keypad

serial-keypad.py

import serial
from evdev import UInput, ecodes as e

# create a dictionary of keycodes to map serial data
# to keycodes
keymap = {
    '1': [e.KEY_1],
    '2': [e.KEY_2],
    '3': [e.KEY_3],
    '4': [e.KEY_4],
    '5': [e.KEY_5],
    '6': [e.KEY_6],
    '7': [e.KEY_7],
    '8': [e.KEY_8],
    '9': [e.KEY_9],
    '0': [e.KEY_0],
    'L': [e.KEY_LEFT],
    'R': [e.KEY_RIGHT],
    'D': [e.KEY_DOWN],
    'U': [e.KEY_UP],
    'E': [e.KEY_ENTER],
    '.': [e.KEY_DOT]
}

# Open the serial port
ser = serial.Serial('/dev/ttyACM0', 9600)

# Create a virtual input device
ui = UInput()

try:
    while True:
        if ser.in_waiting:
            data = ser.read().decode('utf-8')
            if 'TECLA_' in data:
                data = data.replace('TECLA_', '')
                if data in keymap:
                    # press keys
                    for key in keymap[data]:
                        ui.write(e.EV_KEY, key, 1)
                    # release keys
                    for key in keymap[data][::-1]:
                        ui.write(e.EV_KEY, key, 0)
                    ui.syn()
            if 'K_' in data:
                data = data.replace('K_', '')
                # realizar logica do K
            if 'I_' in data:
                data = data.replace('I_', '')
                # realizar logica do I
            if 'D_' in data:
                data = data.replace('D_', '')
                # realizar logica do D
except KeyboardInterrupt:
    pass
finally:
    ser.close()
    ui.close()