beep

#!/usr/bin/env python
# coding: utf-8
###############################################################################
# Python version of the linux beep program to control the UPS PIco's buzzer.
# Copyright (C) 2018  Jimmy DEVEIL <jimmy.deveil@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
###############################################################################


import smbus
import time
import sys
import getopt

chip_address = 0x6b
freq_address = 0x0e
dur_address  = 0x10

version = 'beep-1.0.0 python version for i2c device'

class Beep:
    def __repr__(self):
        return version

    def usage(self):
        print """Usage:
beep [-f freq] [-l length] [-r reps] [-d delay] [-D delay] [--verbose | --debug]
beep [Options...] [-n] [--new] [Options...] ... 
beep [-h] [--help]
beep [-v] [-V] [--version]"""

    def __init__(self, argv):
        self.i2c = smbus.SMBus(1)
        self.beeps = []

        try: opts, args = getopt.getopt(argv, 'f:l:r:d:D:nshvV', ['new', 'help', 'version'])
        except:
            self.usage()
            sys.exit(1)

        b = {}
        for opt, arg in opts:
            if opt in ('-h', '--help'):
                self.usage()
                sys.exit(0)
            elif opt in ('-v', '-V', '--version'):
                print self
                sys.exit(0)
            elif opt in ('-n', '--new'):
                self.beeps.append(b)
                b = {}
            elif opt == '-f':
                b['frequency'] = int(float(arg))
            elif opt == '-l':
                b['duration'] = min(255, int(arg)/10)
            elif opt == '-r':
                b['repeat'] = int(arg)
            elif opt in ('-d', '-D'):
                b['delay'] = int(arg)/1000.0
        self.beeps.append(b)

    def beep(self):
        for b in self.beeps:
            self._beep(**b)

    def _beep(self, duration=10, frequency=750, repeat=1, delay=0):
        delay = duration/100.0 + delay
        for i in range(repeat):
            self.i2c.write_word_data(chip_address, freq_address, frequency)
            self.i2c.write_byte_data(chip_address, dur_address, duration)
            time.sleep(delay)

if __name__ == '__main__':
    Beep(sys.argv[1:]).beep()