This shows the new strategy to deal with architecture-specific
code:
- Keep common code as before.
- Keep the header file unchanged as well, no architecture
specific headers.
- Move architecture specific code to an architecture specific
file and wrap the whole contents into an architecture test.
- Also wrap the whole contents with #ifdef TEACUP_C_INCLUDE.
Without this wrapping, Arduino IDE as well as Configtool would
compile the stuff twice, because they compile everything
unconditionally.
- Last not least, #define TEACUP_C_INCLUDE and #include all
architecture specific files unconditionally.
Build tests were successful with the Makefile, with Configtool
and with Arduino 1.5.8, so this strategy is expected to work.
Regarding the copy operation of this commit: code unchanged,
other than rewriting of all the comments for the current idea of
'proper' formatting, getting rid of tabs and some other whitespace
editing.
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