HAL driver: Add changes from needad for nrf52840 support
us_ticker, spi, sleep, serial, pwmout, pinmap, object, i2c, gpio, analogin
Add compatibility patches for:
- SoftDevice headers renamed (redirec by a few h files)
- sdk configuration (redirect by sdk_config.h files)
- renaming of func in softdevice handler module
Add sleep/deepsleep functions to platform layer which are replacing HAL
functions with the same name, rename existing symbols in HAL layer
to hal_sleep/hal_deepsleep. This way sleep functions
are always available, even if target doesn't implement them, which makes
the code using sleep clearer. It also enables us to make decision on in
which builds (debug/release) the sleep will be enabled.
An active IRQ from the FPU can prevent the micro to go to sleep, even if this
IRQ is not enabled and not implemented. As a workaround, the FPU IRQ is cleared
before enterring sleep.
Andrzej Puzdrowski
Bartek Szatkowski
Vincent Coubard
Głąbek, Andrzej
Christopher Haster