add extern "C" to hw_clock_hfxo_request and int hw_clock_hfxo_release #55
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Add extern "C" to hw_clock_hfxo_request and int hw_clock_hfxo_release declarations.
These functions are defined Arduino wiring.c, and there they are defined as
extern "C"
. They are not part of wiring.h though,but are only declared in
nrf.h
, where they don't have "C" linkage. So any attempt to use these functions in cpp code fails to link.