to allow WebUSB development, provide a way to change the USB_VERSION reported
using an additional core.
The additional (webUSB) core will survive IDE and AVR core updates
Fixes that more complex methods (like Stream::print(float)) do not work properly.
Without this fix, Wire.print(1.01f); results in '1' because Print::printFloat(double, uint8_t) performs multiple print() and therefore twi_transmit calls. Also Wire.println("Heyho"); results only in a newline character.
In an excess of confidence, these defines were added to Leonardo's variant.h
3rd party boards sometimes avoid inheriting this variant but they still define USBCON, thus breaking the build
As I was not able to base the return types of `begin()` & `end()` off the c_str() function, I have changed the source so the features can be used by C++98 code, while still allowing ranged loops in C++11.
Replaces #4280, only checks for the bootloader once
Tested with Hoodloader2, should work with every LUFA-derived bootloader released after 2014 (.apitable_signatures section must be placed at end of the flash)
BootloaderAPITable.S :
.global BootloaderAPI_Signatures
BootloaderAPI_Signatures:
.long BOOT_START_ADDR ; Start address of the bootloader
.word 0xDF00 ; Signature for the CDC class bootloader
.word 0xDCFB ; Signature for a LUFA class bootloader
makefile:
BOOT_API_LD_FLAGS += $(call BOOT_SECTION_LD_FLAG, .apitable_signatures, BootloaderAPI_Signatures, 8)
Define archive_file_path in Arduino AVR Boards platform.txt to provide
backwards compatibility with IDE versions previous to 1.6.6. The
archive_file_path value set in platform.txt is overridden in IDE 1.6.6+.
This produces avr-ar commands identical to the previous behavior.
- Remove comment in Arduino AVR Boards platform.txt about -w flag. This
is no longer relevant since the compiler warning level is now set by the
user.
- Fix typos
added "build.usb_manufacturer" entry that overrides default macro in USBCore.cpp source file. this isn't really necessary since the source macro is the same as in "boards.txt", but it gives 3rd party board vendors direction in how to have their SAM3X board use their own manufacturer string during USB enumeration.
now "myboard.build.usb_product" and "myboard.build.usb_manufacturer" from a 3rd party board in "boards.txt" are used in source code. if they aren't defined in "boards.txt", default values are used.
