Stopwatch

Block: Stopwatch (stopwatch)

Block Author: Jason Manley

Document Author: Jason Manley

Contents Summary Mask Parameters Ports Description

Summary

Counts the number of clocks between a start and stop pulse.

Mask Parameters

None.

Ports

Port	Dir	Data Type	Description
start	in	boolean	Start counting
stop	in	boolean	Stop counting and hold value until reset received
reset	in	boolean	Reset back to zero.
count_out	out	ufix_32_0	Number of clocks elapsed since start pulse received.

Description

This block counts the number of clocks between a start and stop pulse. This value is held until a reset is received. If another start pulse is received before the reset, counting resumes from where it left-off. If a reset is received mid-way through a count (ie before a stop pulse) then the stopwatch will be reset and await another start pulse before it restarts counting.