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Reading the counter


This appears to be one of two essays on the same subject, referring to the same source code! Click here for the other effort!

Most of what you need, I hope is contained in the documentation within the source code. I'll try to expand this page as time and interest shown permit/ warrants.

The source code is for Borland's Delphi. It will allow you to read the counter for input B of a DS2423. Only small changes are needed to read the counter for input A.

Get your counter working first, using the Dallas iButton Viewer that comes with TMEX. I couldn't find a way to do this without supplying a power supply (two AA batteries, in my instance) to the DS2423. The Viewer will also reveal for you your chip's unique ID code, which you will need. (You supply it to my program with an .ini file. One is supplied, but you have to edit it to change the chip ID entry... unless you want to run the program using my Dallas chip!)
Zip file with source code
I also have some pages explaining Delphi programming, and the Level Five tutorials are about using Dallas chips- the DS2401 ("silicon serial number"), DS2405 (single bit input or output), DS1820 temperature sensor, DS2423 (counter discussed in this page), DS2450 (ADC)
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