Usb Data Logging (File System) - Hitachi MICRO-EHV+ Applications Manual

Chapter 3 Programming

3.23 USB data logging (File system)

This function is supported by MICRO-EHV+ CPU ROM VER.3.5.3.41 or newer.
This function works only when USB memory is plugged in MICRO-EHV+.
Since USB memory supports file system, the library CAA File is available with USB memory. One of the useful
functions of CAA File is data logging. A sample program of data logging is introduced as below.
This sample program will create a CSV file (file name: Datalog.csv) with 3 data (time stamp, dummy data, text) as
follows. New log data is additionally written to the same file every 10 seconds automatically. Modify data format
and writing timing according to your system requirements.
Variable declaration
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