Should be done for temptable in ThermistorTable.h, too, but this
would mess up an existing users' configuration.
This tries to put emphasis on the fact that you have to read
these values with pgm_read_*() instead of just using the variable.
Unfortunately, gcc compiler neither inserts PROGMEM reading
instructions automatically when reading data stored in flash,
nor does it complain or warn about the missing read instructions.
As such it's very easy to accidently handle data stored in flash
just like normal data. It'll compile and work ... you just read
arbitrary data (often, but not always zeros) instead of what you
intend.
At this point in time not a single user of LUFA is known and
here is reported how usb_serial apparently works more reliable:
http://forums.reprap.org/read.php?147,33082,160724#msg-160724
So it's likely we can move from lufa_serial to usb_serial entirely.
solution was less computing intensive, but failed when the GCode
interpreter couldn't keep up with the incoming stream, e.g. when
handling a lot of tiny moves.
The old implementation is still in place but somewhat redundant
now, so stay tuned ...
Oh, and G4 Dwell works now as well.
Markus Hitter
Michael Moon