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doc update documentation regarding codepages

This commit is contained in:
Patrick Kanzler 2016-07-24 02:14:23 +02:00 committed by Patrick Kanzler
parent 0cfedb5706
commit 13937ab0da
1 changed files with 14 additions and 16 deletions
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doc/user/usage.rst
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@ -177,6 +177,20 @@ And for a network printer::
host: 127.0.0.1
port: 9000
Printing text right
-------------------
Python-escpos is designed to accept unicode. So make sure that you use ``u'strings'`` or import ``unicode_literals``
from ``__future__`` if you are on Python2. On Version 3 you should be fine.
For normal usage you can simply pass your text to the printers ``text()``-function. It will automatically guess
the right codepage and then send the encoded data to the printer. If this feature should not work, please try to
isolate the error and then create an issue.
I you want or need to you can manually set the codepage. For this please use the ``charcode()``-function. You can set
any key-value that is in ``CHARCODE``. If something is wrong, an ``CharCodeError`` will be raised.
After you have set the codepage manually the printer won't change it anymore. You can get back to normal behaviour
by setting charcode to ``AUTO``.
Advanced Usage: Print from binary blob
--------------------------------------
@ -204,19 +218,3 @@ Here you can download an example, that will print a set of common barcodes:
* :download:`barcode.bin </download/barcode.bin>` by `@mike42 <https://github.com/mike42>`_
How to update your code for USB printers
----------------------------------------
Old code
::
Epson = escpos.Escpos(0x04b8,0x0202,0)
New code
::
Epson = printer.Usb(0x04b8,0x0202)
Nothe that "0" which is the interface number is no longer needed.