FPGA Timekeeper to Timestamp in LabVIEW

[acwu1]

Overview

This example shows how you can take the output from the FPGA Timekeeper timestamp, and calculate the date and time. 

Description

The FPGA Timekeeper is very precise, but its native timekeeping data structure (ns since the TAI epoch) is hard to read and convert, especially on the FPGA where math functions are limited. This set of functions uses FPGA-only IP to convert from the FPGA Timekeeper timestamp to Year, Month, Day, Hours, Minutes, and Seconds. It also calculates the ordinal date (day of the year).

Requirements

• LabVIEW 2012 (or compatible).
• LabVIEW FPGA Module
• FPGA Timekeeper

Steps to Implement or Execute Code

1. Place the timestamp returned into the FPGA time (ns) control
2. Run the code
3. The corresponding date and time is returned by the indicators
   
   

Additional Information or References 

Block Diagram

It does this by using the Julian Date calculations described at https://en.wikipedia.org/wiki/Julian_day

**This document has been updated to meet the current required format for the NI Code Exchange.**