new gitignore, ports all rx-return-interrupting

.gitignore

embedded/README.md

...ed/atsams70-tinyrouter/.vs/atsams70-tinyrouter/v14/.atsuo

...ed/atsams70-tinyrouter/atsams70-tinyrouter/Debug/Makefile

...yrouter/atsams70-tinyrouter/Debug/atsams70-tinyrouter.bin

...-tinyrouter/Debug/src/ASF/common/boards/user_board/init.d

...-tinyrouter/Debug/src/ASF/common/boards/user_board/init.o

...outer/Debug/src/ASF/common/services/clock/sams70/sysclk.d

...outer/Debug/src/ASF/common/services/clock/sams70/sysclk.o

...r/Debug/src/ASF/common/services/delay/sam/cycle_counter.d

...r/Debug/src/ASF/common/services/delay/sam/cycle_counter.o

...Debug/src/ASF/common/utils/interrupt/interrupt_sam_nvic.d

...Debug/src/ASF/common/utils/interrupt/interrupt_sam_nvic.o

...r/atsams70-tinyrouter/Debug/src/ASF/sam/drivers/pmc/pmc.d

...r/atsams70-tinyrouter/Debug/src/ASF/sam/drivers/pmc/pmc.o

...atsams70-tinyrouter/Debug/src/ASF/sam/drivers/pmc/sleep.d

...atsams70-tinyrouter/Debug/src/ASF/sam/drivers/pmc/sleep.o

.../utils/cmsis/sams70/source/templates/gcc/startup_sams70.d

.../utils/cmsis/sams70/source/templates/gcc/startup_sams70.o

...F/sam/utils/cmsis/sams70/source/templates/system_sams70.d