song select function added.

jacktest.py

# -*- coding: utf-8 -*-

# Attach to auto start
# add hayashi 160213
# /etc/rc.local
# sudo python /home/pi/Documents/docomo/jack.py > /dev/null 2>&1 &

import RPi.GPIO as GPIO
import time
import os
import datetime
import logging

songid = 1

def readFile():
	global songid
	f = open('/home/pi/Documents/docomo/songid.txt', 'r')
	for line in f:
    		songid = int(line)
	f.close()

def writeFile(id):
	f = open("/home/pi/Documents/docomo/songid.txt","w")
	f.write( str(id) )
	f.close()

		
###
### GPIO Settings
###

ch_jack = 5
ch_ledout = 13
ch_pwsw = 21

GPIO.setmode(GPIO.BCM) 

#jack pinをプルアップする
GPIO.setup(ch_jack, GPIO.IN, pull_up_down=GPIO.PUD_UP) 

#LEDを光らせる
GPIO.setup(ch_ledout, GPIO.OUT ) 
GPIO.output(ch_ledout,GPIO.HIGH)

#電源スイッチをプルアップする
GPIO.setup(ch_pwsw,GPIO.IN,pull_up_down=GPIO.PUD_UP)


###
###	Logrfile Settings
###

#rootロガーを取得
logger = logging.getLogger()
logger.setLevel(logging.DEBUG)

#出力のフォーマットを定義
formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')

#ファイルへ出力するハンドラーを定義
fh = logging.FileHandler(filename='/home/pi/Documents/docomo/log.txt')
fh.setLevel(logging.DEBUG)
fh.setFormatter(formatter)

#rootロガーにハンドラーを登録する
logger.addHandler(fh)



###
###	functions
###

def switch_callback(gpio_pin):
    if GPIO.input(gpio_pin):
        logging.debug("HIi -")
	sound_play()
    else:
        logging.debug("LOW - ")
	sound_play()

# mp3を再生する
def sound_play():
	global songid
        todaydetail  =    datetime.datetime.today()
	GPIO.output(ch_ledout,GPIO.LOW)	
        os.system('killall mpg321')
        time.sleep(0.5)
	filename = "/home/pi/Documents/docomo/mp3/voice%02d.mp3" % int(songid)
        logging.info( "{} {}".format (todaydetail.strftime("%Y/%m/%d %H:%M:%S\tStartPlay") ,filename)) 
        os.system('mpg321 -q {} &'.format(filename))
	GPIO.output(ch_ledout,GPIO.HIGH)


def changesong():
	global songid
	songid = int(songid) + 1
	if(songid > 7):
		songid = 1
	writeFile(songid)

	logging.debug("change song to {}".format(songid))
	sound_play()

def switchdown_callback(gpio_pin):
	logging.debug("power is low pin:{} state:{}".format(gpio_pin,GPIO.input(gpio_pin)))


	# シャットダウンスイッチ用の変数
	button_current = 1	#ボタンの押下状態 0:ON 1:OFF
	button_previous = 1 	#ループ一回前のボタンの状態
	flag_pressed = 0	#連続した押下状態
	button_count = 0	#ボタンの連続押しをカウント。この数で制御を切り分ける
	reboot_count = 30	# rebootモードに入るまでのbutton_countの閾値

	while True:
		button_current = GPIO.input(gpio_pin)
		flag_pressed = button_previous + button_current

		if( button_count >= reboot_count and button_count < 100 ):
			if(button_current):
				logging.info("----------REBOOT message")
				GPIO.output(ch_ledout,GPIO.HIGH)
				os.system("sudo shutdown -r now")
				break

		elif( (not flag_pressed) and button_count == 100):
			logging.info("----------SHUTDOWN message")
			GPIO.output(ch_ledout,GPIO.LOW)
			os.system("sudo shutdown -h now")
			break 

		elif(button_count < reboot_count and button_current):
			changesong()
			break

		button_previous = button_current
		
		if( button_count >= reboot_count):	
			if( button_count % 2 == 1):
				GPIO.output(ch_ledout,GPIO.HIGH)
			else:
				GPIO.output(ch_ledout,GPIO.LOW)

		if (not(flag_pressed)):
			button_count += 1
    		else:
      			button_count = 0


		time.sleep(0.03)



### 
### main
### 

readFile();

logging.info("START jack.py awake songid:{}----------------------------".format(songid) )
sound_play()

GPIO.add_event_detect(ch_jack, GPIO.BOTH, callback=switch_callback,bouncetime=800) 
GPIO.add_event_detect(ch_pwsw, GPIO.FALLING, callback=switchdown_callback,bouncetime=800)


try:
    while True:
        time.sleep(1)
except KeyboardInterrupt:
    logging.info("STOP jack.py ----------------------")		
    GPIO.output(ch_ledout,GPIO.LOW)
    GPIO.cleanup()