These functions were changed from private to protected in 99f2a27553 but the comments were not updated at that time.
In conjunction with equivalent pull requests to Arduino SAM Boards and Arduino SAMD Boards, solves https://github.com/arduino/Arduino/issues/6146.
This method originally flushed pending input bytes, which makes sense in
Stream. At some point it was changed to flush output bytes instead, but
it was never moved to Print to reflect this.
Since Stream inherits from Print, this should not really affect any
users of the Stream or Print classes. However to prevent problems with
existing implementations of the Print class that do not provide a
flush() implementation, a default implementation is provided. We should
probably remove this at some point in the future, though.
Avrdude has changed the way it handle unused bits in the extended fuse for atmega 328 and atmega 168, they are now at 1 instead of 0.
See http://svn.savannah.nongnu.org/viewvc?view=rev&root=avrdude&revision=1335 for more info.
This causes avrdude to fail when one try to write the fuse with the unused bits at 0, because the value it read back is not the same than the one it tried to write. This commit fixes the fuse value for all boards that use atmega328 or 168.
- "." is a string literal, and so is treated as the char '.' plus the null char '\0'.
- Single quotes reduces the necessary memory for this literal to only one char instead.
A string literal as the one actually present may require the use of the
method "write(const char *str)", so there could be also a performance overhead.
- Another reason to change quotes style is for consistency with line 235.
Signed-off-by: Patrick Roncagliolo <ronca.pat@gmail.com>
Arduino AVR Boards 1.6.11 added the {upload.verify} property to the tools.avrdude.upload recipe and {program.verify} to the tools.avrdude.program recipe to support the File > Preferences > Verify code after upload setting.
In Arduino IDE versions 1.6.8 and previous upload.verify is set to true or false depending on the preferences setting which causes Upload to an AVR board with Arduino IDE 1.6.8 or older and Arduino AVR Boards 1.6.11 or newer to generate AVRDUDE commands like:
avrdude -CC:\Users\per\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino2/etc/avrdude.conf -v true -patmega328p -carduino -PCOM21 -b115200 -D -Uflash:w:C:\Users\per\AppData\Local\Temp\buildece560c1024a4a94b7c3b05be61aa2fc.tmp/sketch_sep28a.ino.hex:i
program.verify is unset, which causes Upload Using Programmer to an AVR board with Arduino IDE 1.6.8 or older and Arduino AVR Boards 1.6.11 or newer to generate AVRDUDE commands like:
avrdude -CC:\Users\per\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino6/etc/avrdude.conf -v {program.verify} -patmega328p -cusbasp -Pusb -Uflash:w:C:\Users\per\AppData\Local\Temp\build77ff2e21c5523c5895e8d065447461cb.tmp/sketch_sep28a.ino.hex:i
AVRDUDE 6.0.1 is able to ignore the spurious item in the command and successfully upload but when used with AVRDUDE 6.3.0 this causes upload to fail:
avrdude: no programmer has been specified on the command line or the config file
Specify a programmer using the -c option and try again
This means that Arduino AVR Boards 1.6.12 and 1.6.14 are not backwards compatible with Arduino IDE 1.6.8 and previous.
Setting a default empty value for the upload.verify and program.verify properties in platform.txt causes Arduino IDE 1.6.8 and older to generate an AVRDUDE command identical to that generated with Arduino AVR Boards 1.6.10 or older(meaning that, as previously, the preferences setting has no effect):
avrdude -CC:\Users\per\AppData\Local\Arduino15\packages\arduino\tools\avrdude\6.3.0-arduino2/etc/avrdude.conf -v -patmega328p -carduino -PCOM21 -b115200 -D -Uflash:w:C:\Users\per\AppData\Local\Temp\buildece560c1024a4a94b7c3b05be61aa2fc.tmp/sketch_sep28a.ino.hex:i
Arduino IDE 1.6.9 and newer overrides the default values of upload.verify and program.verify, therefore this change has no effect on the AVRDUDE command generated and verification is controlled by the preferences setting as usual.
Tested back to Arduino IDE 1.6.2, the oldest IDE version that supports Boards Manager updates.
