Returns the contents of the hardware time buffer. The returned value is the time within the current sample at which the PLS event will occur.
Returns -1 if the sample does not contain a PLS.
Where index = 1 to <motion buffer size> x <PLS motion buffer>
Version 4.7.8 and later
-1 to <motion bus cycle time in µs>
must query HW_PLS_DEBUG_LVL_SET(2,0,0)
lDummy = HW_PLS_DEBUG_LVL_SET(2,0,0)