Change the default compression error window (max_error) from 50us to
25us - it's common for stepper motor drivers to have 30us for their
"pwm fixed off time" and it would be good for the steps to be
scheduled within that time.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add a DECL_CONSTANT macro to allow the firmware to define constants
that are to be exported to the host during the "identify" phase. This
replaces the existing hardcoded mechanism of scanning the Kconfig
header file for certain constants.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Use a more real-world example to improve the description of message
block contents. Make it more clear that the data dictionary contains
and utilizes the full command descriptions.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Various installation updates. Recommend upgrade to OctoPrint v1.3.0.
Recommend configuring OctoPrint to not disconnect on error. Note
quirk with needing to reload page if "/tmp/printer" not in list of
serial connections. Add brief documentation on use of extended
commands and checking for errors.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Support human readable commands (eg, "help"). Add a "help" command to
list these extended commands.
Also, add support for declaring command aliases, command help, and
command availability next to the handlers themselves.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Check that all options specified in the config file are valid. This
catches possible typos and spelling errors in variable names that have
a default.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Instead of writing error messages to stderr, route them into the
python code and use the standard python logging system.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add support for greenlets - a mechanism for tasks that can pause while
still allowing regular reactor events to occur.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Should a homing move complete without hitting the endstop, then
disable motors, disable the endstop checking, and report the error to
the user.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Writing to the debug log can cause an unbounded delay due to disk IO.
This is particularly so on embedded machines such as the Raspberry Pi
that run on SD cards. These log writing delays can cause problems for
the main processing threads.
The new "queuelogger" code forwards all the main thread log messages
to a queue, and a background thread writes the log messages from the
queue to the destination file. This eliminates the IO delay from the
main threads.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Due to the lookahead, small changes in the direction of the toolhead
cause minor changes in toolhead velocity. These "cornering" velocity
changes cause the current extruder code to trigger pressure advance
and its associated pressure retract. This causes the extruder to
rapidly "jerk" the filament.
This code change updates the extruder to detect velocity changes due
solely to cornering and avoid pressure advance.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Some details on the code flow and organization have changed since
support for ARM processors was added. Update Code_Overview.md
accordingly.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor