Merge remote-tracking branch 'manpaz/master'
This commit is contained in:
Christoph Heuel
commit
50b0691e68
10
CHANGELOG
10
CHANGELOG
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@ -26,12 +26,18 @@ CHANGELOG
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* 2015-04-21 - Version 1.0.5
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- Merge pull request #45 from Krispy2009/master
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. Raising the right error when wrong charcode is used
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. Sent by Krispy2009@gmail.com
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. Sent by Kristi <Krispy2009@gmail.com>
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* 2015-07-06 - Version 1.0.6
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- Merge pull request #53 from ldos/master
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. Extended params for serial printers
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. Sent by cafeteria.ldosalzira@gmail.com
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. Sent by ldos <cafeteria.ldosalzira@gmail.com>
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* 2015-08-22 - Version 1.0.7
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- Issue #57: Fixed transparent images
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* 2015-10-27 - Version 1.0.8
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- Merge pull request #59 from zouppen/master
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. Support for images vertically longer than 256 pixels
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. Sent by Joel Lehtonen <joel.lehtonen@koodilehto.fi>
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- Updated README
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62
README
62
README
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@ -4,16 +4,7 @@ ESCPOS
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Python library to manipulate ESC/POS Printers.
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------------------------------------------------------------------
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1. Dependencies
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In order to start getting access to your printer, you must ensure
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you have previously installed the following python modules:
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* pyusb (python-usb)
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* PIL (Python Image Library)
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------------------------------------------------------------------
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2. Description
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1. Description
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Python ESC/POS is a library which lets the user have access to all
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those printers handled by ESC/POS commands, as defined by Epson,
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@ -33,60 +24,13 @@ paper, carrier return, printer reset and others concerned to the
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carriage alignment.
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------------------------------------------------------------------
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3. Define your printer
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Before start create your Python ESC/POS printer instance, you must
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see at your system for the printer parameters. This is done with
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the 'lsusb' command.
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First run the command to look for the "Vendor ID" and "Product ID",
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then write down the values, these values are displayed just before
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the name of the device with the following format:
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xxxx:xxxx
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Example:
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Bus 002 Device 001: ID 1a2b:1a2b Device name
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Write down the the values in question, then issue the following
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command so you can get the "Interface" number and "End Point"
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lsusb -vvv -d xxxx:xxxx | grep iInterface
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lsusb -vvv -d xxxx:xxxx | grep bEndpointAddress | grep OUT
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The first command will yields the "Interface" number that must
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be handy to have and the second yields the "Output Endpoint"
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address.
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By default the "Interface" number is "0" and the "Output Endpoint"
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address is "0x82", if you have other values then you can define
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with your instance.
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------------------------------------------------------------------
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4. Define your instance
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The following example shows how to initialize the Epson TM-TI88IV
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*** NOTE: Always finish the sequence with Epson.cut() otherwise
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you will endup with weird chars being printed.
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from escpos import *
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""" Seiko Epson Corp. Receipt Printer M129 Definitions (EPSON TM-T88IV) """
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Epson = escpos.Escpos(0x04b8,0x0202)
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Epson.text("Hello World")
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Epson.image("logo.gif")
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Epson.barcode
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Epson.barcode('1324354657687','EAN13',64,2,'','')
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Epson.cut()
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------------------------------------------------------------------
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5. Links
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2. Documentation
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Please visit project documentation at:
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https://github.com/manpaz/python-escpos/wiki
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------------------------------------------------------------------
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6. Donations
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3. Donations
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There are some different prints I'd like to acquire, but unfortunately
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not all, even used, are cheaper and easy to get.
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@ -45,7 +45,7 @@ class Escpos:
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buffer = ""
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self._raw(S_RASTER_N)
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buffer = "%02X%02X%02X%02X" % (((size[0]/size[1])/8), 0, size[1], 0)
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buffer = "%02X%02X%02X%02X" % (((size[0]/size[1])/8), 0, size[1]&0xff, size[1]>>8)
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self._raw(binascii.unhexlify(buffer))
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buffer = ""
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@ -72,7 +72,7 @@ class Escpos:
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if im.size[0] > 512:
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print ("WARNING: Image is wider than 512 and could be truncated at print time ")
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if im.size[1] > 255:
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if im.size[1] > 0xffff:
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raise ImageSizeError()
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im_border = self._check_image_size(im.size[0])
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@ -41,11 +41,19 @@ class Usb(Escpos):
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if self.device is None:
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print("Cable isn't plugged in")
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if self.device.is_kernel_driver_active(0):
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check_driver = None
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try:
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check_driver = self.device.is_kernel_driver_active(0)
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except NotImplementedError:
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pass
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if check_driver is None or check_driver:
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try:
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self.device.detach_kernel_driver(0)
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except usb.core.USBError as e:
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print("Could not detatch kernel driver: %s" % str(e))
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if check_driver is not None:
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print("Could not detatch kernel driver: %s" % str(e))
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try:
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self.device.set_configuration()
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