use register clobbers in inline asm

* Fix caching

* Create requirements.txt

* Fix PlatformIO build for Wiring examples, use cache properly

* Remove uneeded file

* Add slightly more into PlatformIO ini

* Build minichlink in CI (linux)

* Build minichlink in CI (linux)

* Build minichlink in CI (linux), try 3

* Build minichlink in CI (Windows

* Build minichlink in CI (clean)

* Build minichlink in CI (clean 2)

* Build minichlink in CI (MacOs12)

* Build minichlink in CI (MacOs12)

* Fix archive creation

* Fix archive creation 2

* Build for MacOS 11 too

* added Time_Us, Time_Ms and Time_RAW

* Time fixed typos

* moved #ifndef __ASSEMBLER__ back where it was

* substituted for Tick_from_Us and Tick_from_Ms

* renamed to Ticks

* shortened SysTick description

---------

Co-authored-by: recallmenot <edmund.raile@proton.me>

add zicsr support to __enable_irq and __disable_irq

examples: add independant watchdog example

Add I2C slave library and example

Co-authored-by: recallmenot <edmund.raile@proton.me>

* Fix caching
* Create requirements.txt
* Fix PlatformIO build for Wiring examples, use cache properly
* Remove uneeded file
* Add slightly more into PlatformIO ini

Collection of udev niceties

These are being assigned to the plugdev group, but everything was always writeable.

This makes it so the mode is now 660 so the plugdev group is respected.

We shouldn't change the hidraw rules of every device here.

These don't work otherwise on my setup.

Revert "Add I2C slave library & example"

Add I2C slave library & example

Fix wiring and move it to extralibs.

Only perform norvc for boot section only.  Sometimes this can be "lea…

Input capture

Only perform norvc for boot section only.  Sometimes this can be "leaky." and flow outside of the boot function.

GPIO example fixes: fixed port A off-by-one, replaced multiplies with bitshifts, Padded GPIO enum def's