Add runtime support for the nRF52

src/runtime/time.go

@@ -3,18 +3,10 @@ package runtime
 
 // TODO: use the time package for this.
 
-// #include <unistd.h>
-import "C"
-
 type Duration uint64
 
 // Use microseconds as the smallest time unit
 const (
-	Microsecond = 1
 	Millisecond = Microsecond * 1000
 	Second      = Millisecond * 1000
 )
-
-func Sleep(d Duration) {
-	C.usleep(C.useconds_t(d))
-}