Keypad Control and Indications Via Rs-485

Discussion in 'The Projects Forum' started by Mr. Siren Driver, Oct 22, 2008.

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  1. Mr. Siren Driver

    Thread Starter New Member

    Oct 22, 2008
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    Hey Folks!
    I'm building a outdoor warning siren/controller with various ways of control methods with a 80C52 Basic MCU. Is there anyone who could give me some examples of Keypad/LED control via RS-485 communication circuits and/or basic source code similar to those used in security system keypad data buses. I'm fairly new to microcontrollers. I have wrote the code for everything else except this function and have yet to venture into control/indication communication application/programming.
    Much appreciated!!!!
     
    Last edited: Oct 22, 2008
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