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fix is_online() #282

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Merged
patkan merged 4 commits into from
May 2, 2018
+22 −11
Merged

fix is_online() #282

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6261586
fix is_online
thijstriemstra Feb 12, 2018
21d3b7a
fix sphinx formatting
thijstriemstra Feb 13, 2018
2f82beb
reword
thijstriemstra Feb 13, 2018
115f6b1
Merge branch 'development' into patch-3
thijstriemstra Apr 30, 2018
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33 changes: 22 additions & 11 deletions src/escpos/escpos.py
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Original file line number Diff line number Diff line change
Expand Up @@ -828,30 +828,41 @@ def panel_buttons(self, enable=True):
self._raw(PANEL_BUTTON_OFF)

def query_status(self, mode):
""" Queries the printer for its status, and returns an array of integers containing it.
"""
Queries the printer for its status, and returns an array of integers containing it.

:param mode: Integer that sets the status mode queried to the printer.
RT_STATUS_ONLINE: Printer status.
RT_STATUS_PAPER: Paper sensor.
:rtype: array(integer)"""
- RT_STATUS_ONLINE: Printer status.
- RT_STATUS_PAPER: Paper sensor.
:rtype: array(integer)
"""
self._raw(mode)
time.sleep(1)
status = self._read()
return status

def is_online(self):
""" Queries the printer its online status.
When online, returns True; False otherwise.
:rtype: bool: True if online, False if offline."""
"""
Queries the online status of the printer.

:returns: When online, returns ``True``; ``False`` otherwise.
:rtype: bool
"""
status = self.query_status(RT_STATUS_ONLINE)
if len(status) == 0:
return False
return not (status & RT_MASK_ONLINE)
return not (status[0] & RT_MASK_ONLINE)

def paper_status(self):
""" Queries the printer its paper status.
"""
Queries the paper status of the printer.

Returns 2 if there is plenty of paper, 1 if the paper has arrived to
the near-end sensor and 0 if there is no paper.
:rtype: int: 2: Paper is adequate. 1: Paper ending. 0: No paper."""

:returns: 2: Paper is adequate. 1: Paper ending. 0: No paper.
:rtype: int
"""
status = self.query_status(RT_STATUS_PAPER)
if len(status) == 0:
return 2
Expand All @@ -867,7 +878,7 @@ class EscposIO(object):
"""ESC/POS Printer IO object

Allows the class to be used together with the `with`-statement. You have to define a printer instance
and assign it to the EsposIO-class.
and assign it to the EscposIO class.
This example explains the usage:

.. code-block:: Python
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