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PanelDue: Make checksums optional 

Some displays which emulate PD firmware do not use checksums.

Signed-off-by:  Eric Callahan <arksine.code@gmail.com>
This commit is contained in:
Arksine 2020-10-08 14:24:47 -04:00
parent 7a013a42f7
commit 346c3ad2a0
1 changed files with 34 additions and 30 deletions
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64
moonraker/plugins/paneldue.py
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@ -139,6 +139,7 @@ class PanelDue:
self.last_gcode_response = None
self.current_file = ""
self.file_metadata = {}
self.enable_checksum = config.getboolean('enable_checksum', True)
# Initialize tracked state.
self.printer_state = {
@ -308,39 +309,42 @@ class PanelDue:
await self.klippy_apis.emergency_stop()
return
# Get line number
line_index = line.find(' ')
try:
line_no = int(line[1:line_index])
except Exception:
line_index = -1
line_no = None
if self.enable_checksum:
# Get line number
line_index = line.find(' ')
try:
line_no = int(line[1:line_index])
except Exception:
line_index = -1
line_no = None
# Verify checksum
cs_index = line.rfind('*')
try:
checksum = int(line[cs_index+1:])
except Exception:
# Invalid checksum, do not process
msg = "!! Invalid Checksum"
if line_no is not None:
msg += f" Line Number: {line_no}"
logging.exception("PanelDue: " + msg)
raise PanelDueError(msg)
# Verify checksum
cs_index = line.rfind('*')
try:
checksum = int(line[cs_index+1:])
except Exception:
# Invalid checksum, do not process
msg = "!! Invalid Checksum"
if line_no is not None:
msg += f" Line Number: {line_no}"
logging.exception("PanelDue: " + msg)
raise PanelDueError(msg)
# Checksum is calculated by XORing every byte in the line other
# than the checksum itself
calculated_cs = 0
for c in line[:cs_index]:
calculated_cs ^= ord(c)
if calculated_cs & 0xFF != checksum:
msg = "!! Invalid Checksum"
if line_no is not None:
msg += f" Line Number: {line_no}"
logging.info("PanelDue: " + msg)
raise PanelDueError(msg)
# Checksum is calculated by XORing every byte in the line other
# than the checksum itself
calculated_cs = 0
for c in line[:cs_index]:
calculated_cs ^= ord(c)
if calculated_cs & 0xFF != checksum:
msg = "!! Invalid Checksum"
if line_no is not None:
msg += f" Line Number: {line_no}"
logging.info("PanelDue: " + msg)
raise PanelDueError(msg)
await self._run_gcode(line[line_index+1:cs_index])
await self._run_gcode(line[line_index+1:cs_index])
else:
await self._run_gcode(line)
async def _run_gcode(self, script):
# Execute the gcode. Check for special RRF gcodes that