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