n07070/littleprynter
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Change management of state : we assume the printer is online. Otherwise,

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because this is a real-time command, we might not get the good answer
and fail to print fast enough. See https://download4.epson.biz/sec_pubs/pos/reference_en/escpos/realtime_commands.html
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n07070
2026-06-12 17:19:53 +02:00
parent 65e4a2ad9c
commit 7d19098b61
1 changed files with 15 additions and 8 deletions
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23
src/printer.py
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@@ -322,22 +322,29 @@ class EscPosPrinter(Printer):
self.app.logger.info("Did a cut") self.app.logger.info("Did a cut")
self.ready = True self.ready = True
def _state(self): def _state(self) -> bool:
self.app.logger.debug("Online : %s " , self.printer.is_online()) has_paper = self._has_paper()
self.app.logger.debug("Has paper : %s " , self._has_paper()) is_ready = self.ready
self.app.logger.debug("Ready : %s " , self.ready)
return self.printer.is_online() and self.ready and self._has_paper() self.app.logger.debug("Has paper : %s " , has_paper )
self.app.logger.debug("Ready : %s " , is_ready )
return is_ready and has_paper # and is_online
def print_task(self, task_type, data): def print_task(self, task_type, data):
"""Execute actual print based on task type""" """Execute actual print based on task type"""
with self._lock: with self._lock:
self.app.logger.debug("Acquired lock to start print") self.app.logger.debug("Acquired lock to start print")
while not self._state(): i_m_ready = self._state()
self.app.logger.debug("Waiting for the printer to become ready..") while not i_m_ready:
self.app.logger.debug("Waiting for the printer to become ready, current state %s ", str(i_m_ready))
i_m_ready = self._state()
time.sleep(0.3) time.sleep(0.3)
self.app.logger.debug("Checked state to start printing %s", self._state()) self.app.logger.debug("Checked state to start printing : %s", self._state())
self.ready = False self.ready = False
try: try:
self.app.logger.debug("Checking task type") self.app.logger.debug("Checking task type")