K 10
svn:author
V 3
avg
K 8
svn:date
V 27
2019-10-25T15:38:09.135508Z
K 7
svn:log
V 546
owc_gpiobus_read_data: compare times in sbintime_t units

Previously the code used sbttous() before microseconds comparison in one
place, sbttons() and nanoseconds in another, division by SBT_1US and
microseconds in yet another.

Now the code consistently uses multiplication by SBT_1US to convert
microseconds to sbintime_t before comparing them with periods between
calls to sbinuptime().  This is fast, this is precise enough (below
0.03%) and the periods defined by the protocol cannot overflow.

Reviewed by:	imp (D22108)
MFC after:	2 weeks

END