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New fix for the not-received-M105 issue

master
Guillaume Seguin 2012-08-11 09:33:40 +02:00
parent 7d8c0bdcf7
commit 7a422f1c62
1 changed files with 10 additions and 5 deletions
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15
printcore.py
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@ -134,19 +134,24 @@ class printcore():
return not self.stop_read_thread and self.printer and self.printer.isOpen()
def _listen_until_online(self):
orig_timeout = self.printer.timeout
self.printer.timeout = 3
while not self.online and self._listen_can_continue():
self._send("M105")
empty_lines = 0
while self._listen_can_continue():
line = self._readline()
if not line:
break
if line == None: break # connection problem
# workaround cases where M105 was sent before printer Serial
# was online an empty line means read timeout was reached,
# meaning no data was received thus we count those empty lines,
# and once we have seen 5 in a row, we just break and send a
# new M105
if not line: empty_lines += 1
else: empty_lines = 0
if empty_lines == 5: break
if line.startswith(tuple(self.greetings)) or line.startswith('ok'):
if self.onlinecb:
try: self.onlinecb()
except: pass
self.printer.timeout = orig_timeout
self.online = True
return
time.sleep(0.25)