This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

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
  • Why do you think this world has so many different GPS modules? Every customer has his own needs.

    Only you know what parameters are important to you. That was why I did post a short list of parameters to think about. There are more parameters too:
    - type of connection (surface-mounted, pin header, bluetooth, ...)
    - price
    - availability
    - availability of good documentation
    - temperature range (industrial, automotive, military, ...)
    - civilian or military (max speed, height, jerk, ...)
    - fully intelligent GPS or using your processor for the computations.
    - support for real-time GPS correction.
    ...

    The list can be made almost infinitely long.

    You must make the requirements list.

    You must give different requirements different weights.

    You must figure out which GPS gets best score.

    My "best" GPS is not your "best" GPS.

    For a school project, it's enough that it uses supply and signalling voltages you are able to interface, a connector you are able to interface to, and the ability to detect satellites in the environment you are going to demonstrate the design in. All else are just optional extras. If you have special goals with your project, then you obviously have to bring in more parameters when scoring the GPS - we don't know what these parameters may be because we don't know your goal.

Reply
  • Why do you think this world has so many different GPS modules? Every customer has his own needs.

    Only you know what parameters are important to you. That was why I did post a short list of parameters to think about. There are more parameters too:
    - type of connection (surface-mounted, pin header, bluetooth, ...)
    - price
    - availability
    - availability of good documentation
    - temperature range (industrial, automotive, military, ...)
    - civilian or military (max speed, height, jerk, ...)
    - fully intelligent GPS or using your processor for the computations.
    - support for real-time GPS correction.
    ...

    The list can be made almost infinitely long.

    You must make the requirements list.

    You must give different requirements different weights.

    You must figure out which GPS gets best score.

    My "best" GPS is not your "best" GPS.

    For a school project, it's enough that it uses supply and signalling voltages you are able to interface, a connector you are able to interface to, and the ability to detect satellites in the environment you are going to demonstrate the design in. All else are just optional extras. If you have special goals with your project, then you obviously have to bring in more parameters when scoring the GPS - we don't know what these parameters may be because we don't know your goal.

Children