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Delphi: Monitoring Dallas MicroLan (aka 1-wire) DS2408 inputs

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Click here if you want to know more about the source and format of these pages.

If you just want a finished program to monitor up to eight inputs as seen by a DS2408, then you are invited to check out a page describing my shareware answer to that need.... free to try.

If you want a more focussed tutorial on the DS2408, including discussion of the chip's output facilities, then you will probably be happier with my other DS2408 tutorial.

For a program to monitor the inputs seen by a DS2408, you've come to the right place! This particular tutorial is sketchy... please don't judge my other tutorials from this. However, it does come with a fully working program. Have a look at the screenshot to see what you will get when you download and unzip the archive. The zip file you can download contains application, source code and helpfile. There is extensive commentary in the source code, for programmers, and a helpfile for those of you who just want to use the application as I have written it. If you want to make changes and compile that code, you also need the Dallas unit IBTMEXPW.PAS which is included with the TMEX SDK. You must edit the application's ini file to put the unique ID of your DS2408 into it, and possibly change the adapter type and port number. (These matters are documented in the helpfile.)

The DS2408 is an 8 channel addressable switch, very like a parallel i/o chip, e.g. 6522 or 6821.

The program I've provided in the zip monitors the 8 lines as inputs, and plots a graph to show you the history of their states.

For more on the MicroLan and why it's cool, see... My guide to MicroLan

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Ad from page's editor: Yes.. I do enjoy compiling these things for you... hope they are helpful. However.. this doesn't pay my bills!!! If you find this stuff useful, (and you run an MS-DOS or Windows PC) please visit my freeware and shareware page, download something, and circulate it for me? Links on your page to this page would also be appreciated!

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