There is a small possibility that a shutdown could occur between
clearing transmit_max and clearing transmit_pos - so make sure to
handle the case where transmit_pos > transmit_max.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
As long as the code is careful when writing the in_sendf variable it
should be safe to update it without having to disable irqs.
Also, make sure in_sendf is cleared on shutdown.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Allow sendf() to be called from irq and timer context - check for the
case where sendf() is called while already in sendf() and simply
discard those messages. This makes it safe to use output() debugging
calls even in irq and timer context.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Continue to resend the pwm value even if the last value was zero -
this extends the debugging info.
Also, add the target temperature to the pwm debugging.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Fix a bug causing timers to be delayed when pause() is called from a
fd event. The eventtime needs to be reloaded when an old greenlet is
reactivated.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Check for msgproto.error and warn the user about version firmware
version mismatch. Raise msgproto.error when extracting firmware
constants.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Use a base of 256 instead of 65536 when calculating the sum of the
square of the clock differences in the stats. This makes the
calculation more accurate. Export the new base via DECL_CONSTANT for
the host to access. Use DIV_ROUND_UP() when adjusting for the base to
ensure no lost ticks. Do the division after multiplication in the
common case where the time between stats_task() invocations is less
than 64K ticks.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Instead of requiring the user enter velocity and accel parameters for
extrude only moves, calculate sane defaults from the printer's maximum
velocity and accel.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Be more clear on which parameters have defaults and which parameters
must be specified in the config.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
It's possible for a printer with very fine resolution to require a
large number of steps for a homing operation. Instead of storing all
of those steps in memory, periodically flush the queue should more
than 64K steps be present. This keeps a reasonable limit on the
amount of ram needed to store steps.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
The serialqueue_flush_ready() code was used to flush queue_step
commands during a homing operation. It's no longer necessary now that
moves during a homing operation use the normal message priority
system.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
The endstop homing system requires all queue_step commands be in the
MCU's 'move queue' before endstop checking starts. Use the normal
message priority system to request that stepper queue_step commands
are received prior to the start of the end_stop_home command. This
simplifies the code and removes the need for special serial queue
flushing.
This also fixes a bug in homing operations that take longer than 2^31
clock ticks.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Add a is_kinematic_move flag to the Move class and clear it on extrude
only moves. Don't call the kinematic check_move() or move() methods
for extrude only moves.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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>
Revert 4a16053c and avoid integer overflows in the addfactor
calculation by exiting the loop early if count > 0x200. This provides
stronger protection against overflows.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Log the constants reported by the MCU and log the number of move items
allocated after configuration.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Commit a217c0f3 changed the way the "addfactor" was calculated.
Unfortunately, it was possible for the updated method to cause an
integer overflow and have a negative addfactor. Fix this by
explicitly casting the addfactor calculation to uint32_t.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Some motors have very small step distances and they can generate over
a million steps during a homing operation. Increase the maximum count
to ten million to avoid triggering the internal sanity check.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Don't assume the hardware ADC has 10bit resultion - instead have the
firmware define a constant and read that constant in the host.
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>
On GCC v6 the -fwhole-program option does not take effect when
-fuse-linker-plugin is also in effect. The -fuse-linker-plugin option
does not optimize as well as -fwhole-program, so explicitly disable
the linker plugin via -fno-use-linker-plugin.
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>
It is possible to restart the host software with a RESTART command
after manually resetting the micro-controller.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Kevin O'Connor