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palette2: Fix UART encoding 

Raised from issue #5645, UTF-8 encoded symbols or other unexpected symbols on the UART raise an exception which causes klipper to stop. This change support UTF-8 encoded characters (from file names) as well as ignoring unexpected bytes.

Signed-off-by: Clifford Roche <clifford.roche@gmail.com>
This commit is contained in:
Clifford Roche 2022-08-06 13:40:41 -04:00 committed by KevinOConnor
parent b1dcd35b7a
commit ce27d35924
1 changed files with 8 additions and 5 deletions
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11
klippy/extras/palette2.py
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@ -544,13 +544,15 @@ class Palette2:
self.cmd_Disconnect()
return self.reactor.NEVER
if len(raw_bytes):
text_buffer = self.read_buffer + str(raw_bytes.decode())
new_buffer = str(raw_bytes.decode(encoding='UTF-8',
errors='ignore'))
text_buffer = self.read_buffer + new_buffer
while True:
i = text_buffer.find("\n")
if i >= 0:
line = text_buffer[0:i+1]
line = text_buffer[0:i + 1]
self.read_queue.put(line.strip())
text_buffer = text_buffer[i+1:]
text_buffer = text_buffer[i + 1:]
else:
break
self.read_buffer = text_buffer
@ -566,7 +568,7 @@ class Palette2:
heartbeat_strings = [COMMAND_HEARTBEAT, "Connection Okay"]
if not any(x in text_line for x in heartbeat_strings):
logging.debug("%0.3f P2 -> : %s" %(eventtime, text_line))
logging.debug("%0.3f P2 -> : %s" % (eventtime, text_line))
# Received a heartbeat from the device
if text_line == COMMAND_HEARTBEAT:
@ -646,5 +648,6 @@ class Palette2:
status["ping"] = self.omega_pings[-1]
return status
def load_config(config):
return Palette2(config)