mirror of
https://github.com/brmlab/ledbar.git
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72 lines
1.7 KiB
Python
Executable file
72 lines
1.7 KiB
Python
Executable file
#!/usr/bin/python
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# vim:et:sw=4:ts=4:sts=4
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import sys
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import time
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import serial
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import getopt
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def print_usage():
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print '''\
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USAGE:
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%s [-h | [-n number] [-b speed] serial]
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OPTIONS:
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serial write output to serial device
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-b speed speed of the serial device
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-n number number of controlled boxes
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-h --help show this help
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''' % sys.argv[0]
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def main():
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try:
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opts, args = getopt.getopt(sys.argv[1:], 's:b:n:h', ['help'])
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except getopt.GetOptError:
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print_usage()
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return 1
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speed = 38400
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number = 10
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show_help = False
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for k, v in opts:
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if k == '-n':
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if not v.isdigit():
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print_usage()
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return 1
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number = int(v)
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elif k == '-b':
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if not v.isdigit():
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print_usage()
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return 1
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speed = int(v)
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elif k == '-h' or k == '--help': show_help = True
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if show_help:
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print_usage()
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return 0
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if len(args) != 1:
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print_usage()
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return 1
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try:
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output_stream = serial.Serial(args[0], speed)
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except serial.serialutil.SerialException:
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print 'Could not open the serial device'
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return 1
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time.sleep(2)
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try:
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while True:
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data = ''
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to_read = number*3
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while to_read > 0:
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read = sys.stdin.read(to_read)
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if len(read) == 0: break
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to_read -= len(read)
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data += read
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if len(read) == 0: break
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output_stream.write(data)
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output_stream.flush()
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except IOError:
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pass
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return 0
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sys.exit(main())
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