Interfacing CD4052 with 2 uarts in 8051

Hey all,

I am doing a project on Vehicle Tracking System using GPS and GSM Modem.The 2 devices aforementioned communicates with 8051uC. But since there is only 1 UART in 8051 i have to use a analog multiplexer i.e CD 4062. I want to know how to interface it with GPS, GSM, and 8051.

Also it would be grateful if anyone could tell me how to parse output of GPS and how initialize a GPS receiver to that it starts giving me the GPRMC

Parents
  • Oh no, here we go again!

    Since a fundamental part of your project is communicating with two serial devices, why not just use a processor with two UARTs?!

    Plenty exist: http://www.keil.com/dd/search_parm.asp

    "i have to use a analog multiplexer"

    Even if you do decide to make life difficult for yourself by using a multiplexer, Why does it have to be analogue?

    This school assignment comes up regularly - use the 'Search' facility on this site to find previous discussions here, and Google (or other search engine) to find them elsewhere...

Reply
  • Oh no, here we go again!

    Since a fundamental part of your project is communicating with two serial devices, why not just use a processor with two UARTs?!

    Plenty exist: http://www.keil.com/dd/search_parm.asp

    "i have to use a analog multiplexer"

    Even if you do decide to make life difficult for yourself by using a multiplexer, Why does it have to be analogue?

    This school assignment comes up regularly - use the 'Search' facility on this site to find previous discussions here, and Google (or other search engine) to find them elsewhere...

Children
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