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75 lines
2.1 KiB
75 lines
2.1 KiB
#! /usr/bin/python
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# -*- encoding: utf-8 -*-
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# Author : Alexis de Lattre <alexis.delattre@akretion.com>
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# The licence is in the file __openerp__.py
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# This is a test script, that you can use if you want to test/play
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# with the customer display independantly from the Odoo server
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# It has been tested with a Bixolon BCD-1100
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import sys
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import logging
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_logger = logging.getLogger(__name__)
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try:
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from serial import Serial
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from unidecode import unidecode
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except (ImportError, IOError) as err:
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_logger.debug(err)
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DEVICE = '/dev/ttyUSB0'
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DEVICE_RATE = 9600
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DEVICE_COLS = 20
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def display_text(ser, line1, line2):
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print "convert to ascii"
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line1 = unidecode(line1)
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line2 = unidecode(line2)
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print "set lines to the right lenght (%s)" % DEVICE_COLS
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for line in [line1, line2]:
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if len(line) < DEVICE_COLS:
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line += ' ' * (DEVICE_COLS - len(line))
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elif len(line) > DEVICE_COLS:
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line = line[0:DEVICE_COLS]
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assert len(line) == DEVICE_COLS, 'Wrong length'
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print "try to clear display"
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ser.write('\x0C')
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print "clear done"
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print "try to position at start of 1st line"
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ser.write('\x1B\x6C' + chr(1) + chr(1))
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print "position done"
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print "try to write 1st line"
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ser.write(line1)
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print "write 1st line done"
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print "try to position at start of 2nd line"
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ser.write('\x1B\x6C' + chr(1) + chr(2))
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print "position done"
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print "try to write 2nd line"
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ser.write(line2)
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print "write done"
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def open_close_display(line1, line2):
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ser = False
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try:
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print "open serial port"
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ser = Serial(DEVICE, DEVICE_RATE, timeout=2)
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print "serial port open =", ser.isOpen()
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print "try to set cursor to off"
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ser.write('\x1F\x43\x00')
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print "cursor set to off"
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display_text(ser, line1, line2)
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except Exception, e:
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print "EXCEPTION e=", e
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sys.exit(1)
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finally:
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if ser:
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print "close serial port"
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ser.close()
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if __name__ == '__main__':
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line1 = u'POS Code Sprint'
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line2 = u'@ Akretion 2014/07'
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open_close_display(line1, line2)
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