# The first commit's message is:
SD Card Alpha Sorting
First iteration of alphabetical sorting for SD cards, both
slow+efficient and fast+rammy. Option for folders to sort first, last,
or not at all.
# This is the 2nd commit message:
Expand on More RAM concept, address minor bugs
# This is the 3rd commit message:
Improvements, more SORT_USES_MORE_RAM
With this option, always keeps the dir in RAM, doubling as a cache for
getfilename. A board with only 8K of SRAM is cutting it very close.
# This is the 4th commit message:
Completed SORT_USES_MORE_RAM implementation
For the MORE_RAM option we need to buffer both the short and long
names, even though long names are sometimes redundant. Worst case, all
the names are max length. We can save some RAM by not storing these. We
could save more RAM by only storing the visible part of the long name.
Changes to support displaying the real-time filament width and the
volume factor on a 20x4 LCD. The data is displayed on the 4th line.
First the status message is displayed for 5 seconds, and then the
filament data is displayed. The status message can be seen by
re-selecting the info screen in the menu.
Original code is using WRITE from fastio, but original used pinMode to
set pin direction and did not use the fastio SET_INPUT or SET_OUTPUT.
This caused an issue with the rotary encoder interface to boards based
on teensyduino, since for teensyduino pin numbers for fastio and the
usual Arduino IO are different.
FW retraction is extended onto swap retraction invoked by 'G10 S1'.
Bookkeeping of the retract state of all extruders allows for having one
extruder fw standard retracted while another extruder is swap retracted.
An LCD menu item for the swap retract and recover length was added.
This is _not_ automatically the cronological, since deleting a file will free
the filesystem descriptor for it, which then will be used by the next file copied on it.
Since this makes the auto0.g file very inaccessible, I put the option back, to have it in the prepare menu.
this should satisfy https://github.com/ErikZalm/Marlin/pull/373
as a reminder, auto0.g will be executed every time after a boot with sd card present and file present.
thereafter, if there is a file auto1.g this will be done. Thats IMHO the best place to put settings, and prepare heating.
I also execute again after each (now again via the prepare menu) before starting a new print/ after a failed one.
It for me 100% replaces any start.gcode form the slicers.