#!/usr/bin/env python from gpiozero import Button from gpiozero import LED from subprocess import check_call #avoid polling from signal import pause # usb nfc reader import sys from evdev import InputDevice, ecodes, categorize # pin mapping PIN_BTN_TGL_START_PAUSE = 4 PIN_BTN_VOL_HIGH = 27 PIN_BTN_VOL_LOW = 24 PIN_BTN_PREV = 13 PIN_BTN_NEXT = 5 LED_TGL_START_PAUSE = 17 LED_VOL_HIGH = 22 LED_VOL_LOW = 25 LED_VOL_PREV = 16 LED_VOL_NEXT = 6 # other constants VOLUME_START = 15 BTN_START_STOP_SHUTDOWN_HOLD_TIME = 5 CODE_MAP_NFC_CARDS = { '0008088162': '\"Markus Osterwalder - Bobo Siebenschläfer macht munter weiter\"', '0008079048': '\"Die 30 besten Schlaflieder für Kinder - zum Entspannen und Einschlafen\"', '0013045752': '\"Winterkinder\"', '0008007958': '\"Ritter Rost\"', '0008361980': '\"Die 30 besten Spiel- und Bewegungslieder 2\"', '0008087971': '\"Die 30 besten neuen Weihnachts- und Winterlieder\"', '0008038413': '\"Das singende Känguruh\"', '0008055353': '\"Bibi Blocksberg - 086 - Kann Papi hexen\"', '0008398035': '\"Bullshit\"', '0008056117': 'http://listen.technobase.fm/tunein-aacplus-pls', '0013045720': '\"Yakari 29 - kleine Jäger Grosser Grizzly\"', '0008097022': 'http://wdr-kiraka-live.icecast.wdr.de/wdr/kiraka/live/mp3/128/stream.mp3', } class Jukebox(object): def __init__(self): # print("sys._getframe().f_code.co_name + " start") # define buttons, see https://gpiozero.readthedocs.io/en/stable/api_input.html#button self.btnTglStartPause = Button(PIN_BTN_TGL_START_PAUSE, pull_up=True, hold_time=BTN_START_STOP_SHUTDOWN_HOLD_TIME) # , bounce_time=0.1 ? self.btnVolHigh = Button(PIN_BTN_VOL_HIGH, pull_up=True) # , bounce_time=0.1 ? self.btnVolLow = Button(PIN_BTN_VOL_LOW, pull_up=True) # , bounce_time=0.1 ? self.btnPrev = Button(PIN_BTN_PREV, pull_up=True) # , bounce_time=0.1 ? self.btnNext = Button(PIN_BTN_NEXT, pull_up=True) # , bounce_time=0.1 ? # connect buttons with functions self.btnTglStartPause.when_pressed = self.onBtnTglStartPausePressed self.btnTglStartPause.when_held = self.onBtnTglStartPauseLongPressed self.btnVolHigh.when_pressed = self.onBtnVolHighPressed self.btnVolLow.when_pressed = self.onBtnVolLowPressed self.btnPrev.when_pressed = self.onBtnPrevPressed self.btnNext.when_pressed = self.onBtnNextPressed # define LEDs self.ledTglStartPause = LED(LED_TGL_START_PAUSE) self.ledVolHigh = LED(LED_VOL_HIGH) self.ledVolLow = LED(LED_VOL_LOW) self.ledPrev = LED(LED_VOL_PREV) self.ledNext = LED(LED_VOL_NEXT) # connect LEDs with button state self.ledTglStartPause.source = self.btnTglStartPause.values self.ledVolHigh.source = self.btnVolHigh.values self.ledVolLow.source = self.btnVolLow.values self.ledPrev.source = self.btnPrev.values self.ledNext.source = self.btnNext.values # play startup sound play("Startup_crop.mp3") def __del__(self): # print(sys._getframe().f_code.co_name + " start") # close buttons self.btnTglStartPause.close self.btnVolHigh.close self.btnVolLow.close self.btnPrev.close self.btnNext.close # close leds self.ledTglStartPause.close self.ledVolHigh.close self.ledVolLow.close self.ledPrev.close self.ledNext.close def onBtnTglStartPausePressed(self): print(sys._getframe().f_code.co_name + " start!") check_call("mpc toggle", shell=True) def onBtnTglStartPauseLongPressed(self): print(sys._getframe().f_code.co_name + " start!") check_call("sudo shutdown -h now", shell=True) def onBtnVolLowPressed(self): print(sys._getframe().f_code.co_name + " start!") check_call("mpc volume -5", shell=True) def onBtnVolHighPressed(self): print(sys._getframe().f_code.co_name + " start!") check_call("mpc volume +5", shell=True) def onBtnPrevPressed(self): print(sys._getframe().f_code.co_name + " start!") check_call("mpc prev", shell=True) def onBtnNextPressed(self): print(sys._getframe().f_code.co_name + " start!") check_call("mpc next", shell=True) # from https://khanhicetea.com/post/read_input_from_usb_keyboard_in_linux/ CODE_MAP_CHAR = { 'KEY_MINUS': "-", 'KEY_SPACE': " ", 'KEY_U': "U", 'KEY_W': "W", 'KEY_BACKSLASH': "\\", 'KEY_GRAVE': "`", 'KEY_NUMERIC_STAR': "*", 'KEY_NUMERIC_3': "3", 'KEY_NUMERIC_2': "2", 'KEY_NUMERIC_5': "5", 'KEY_NUMERIC_4': "4", 'KEY_NUMERIC_7': "7", 'KEY_NUMERIC_6': "6", 'KEY_NUMERIC_9': "9", 'KEY_NUMERIC_8': "8", 'KEY_NUMERIC_1': "1", 'KEY_NUMERIC_0': "0", 'KEY_E': "E", 'KEY_D': "D", 'KEY_G': "G", 'KEY_F': "F", 'KEY_A': "A", 'KEY_C': "C", 'KEY_B': "B", 'KEY_M': "M", 'KEY_L': "L", 'KEY_O': "O", 'KEY_N': "N", 'KEY_I': "I", 'KEY_H': "H", 'KEY_K': "K", 'KEY_J': "J", 'KEY_Q': "Q", 'KEY_P': "P", 'KEY_S': "S", 'KEY_X': "X", 'KEY_Z': "Z", 'KEY_KP4': "4", 'KEY_KP5': "5", 'KEY_KP6': "6", 'KEY_KP7': "7", 'KEY_KP0': "0", 'KEY_KP1': "1", 'KEY_KP2': "2", 'KEY_KP3': "3", 'KEY_KP8': "8", 'KEY_KP9': "9", 'KEY_5': "5", 'KEY_4': "4", 'KEY_7': "7", 'KEY_6': "6", 'KEY_1': "1", 'KEY_0': "0", 'KEY_3': "3", 'KEY_2': "2", 'KEY_9': "9", 'KEY_8': "8", 'KEY_LEFTBRACE': "[", 'KEY_RIGHTBRACE': "]", 'KEY_COMMA': ",", 'KEY_EQUAL': "=", 'KEY_SEMICOLON': ";", 'KEY_APOSTROPHE': "'", 'KEY_T': "T", 'KEY_V': "V", 'KEY_R': "R", 'KEY_Y': "Y", 'KEY_TAB': "\t", 'KEY_DOT': ".", 'KEY_SLASH': "/", } # from https://khanhicetea.com/post/read_input_from_usb_keyboard_in_linux/ def parse_key_to_char(val): return CODE_MAP_CHAR[val] if val in CODE_MAP_CHAR else "" def play(playlist): print(sys._getframe().f_code.co_name + " start!") check_call("mpc clear", shell=True) check_call("mpc add " + playlist, shell=True) check_call("mpc volume " + str(VOLUME_START) , shell=True) check_call("mpc play", shell=True) def parse_nfcCode_toPlaylists(nfcCode): print(sys._getframe().f_code.co_name + "(" + nfcCode + ") start!") if (nfcCode in CODE_MAP_NFC_CARDS) : playlist = CODE_MAP_NFC_CARDS[nfcCode] else: print("NFC code " + nfcCode + " is unknown!") return play(playlist) print(sys._getframe().f_code.co_name + "(" + nfcCode + ") end!") def readNfc(): # from https://khanhicetea.com/post/read_input_from_usb_keyboard_in_linux/ device = InputDevice("/dev/input/event0") # see ls -la /dev/input/ device.grab() # request exclusive access to device data = "" for event in device.read_loop(): if event.type == ecodes.EV_KEY: e = categorize(event) if e.keystate == e.key_up: if e.keycode == "KEY_ENTER": # sys.stdout.write(data+ '\n') # sys.stdout.flush() parse_nfcCode_toPlaylists(data) data = "" else: data += parse_key_to_char(e.keycode) if __name__ == '__main__': print("Jukebox script start") try: jb = Jukebox() readNfc() print("Vor pause()!") pause() except KeyboardInterrupt: print("Keyboard Interrupt ") pass finally: print("finally...") del(jb) print("Jukebox script terminated")