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  1. #1
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    Problem with managing or filtering data from UART using GR47 development board

    Hi friends,

    I am developing an avl product with GPRS...

    The module that I am testing with the development board is GR47, but the literature and the documentation is very poor.

    The big challenge in this moment is get GPS NMEA string from uart3. I can receive the data, but can't manage or filter the data.

    For ex: My GPS sends GPGGA, GPRMC, GPGGL strings, and I have to get only GPRMC string...

    With "normal" C language I did it using a LPC2138 but with the module's IDE I could't

    Anyone can help me or send me any example of uart code for this module ??

    Thanks in advance...

    Wellington

  2. #2
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    Re: GR47 - UART PROBLEM

    Hi


    Are you trying to design an avl who works drectly with GR47 processor ?

    If your answer is yes, you need the GR47 SDK thay use a semi C language who can be downloadded directly to the processor flash memory

    From my point of experience - this method is not working well the best way is to use an external microcontroller like MSP430,LPC2103,PIC8720 etc

    All the best

    Bobi



  3. #3
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    Re: GR47 - UART PROBLEM

    Hi Bob,

    After a lot of tests we concluded the same thing... The best way is to use an external microprocessor..

    We are using now the MC39i from Siemens, and a PIC microprocessor, all the firmware is ok and tested...

    Thank you for your reply

    Best Regards

    Wellington



  4. #4
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    Re: GR47 - UART PROBLEM

    Hi friends,

    Also my proplem is same as wrodrigo. I'm trying to filter data and get only GPRMC string.
    But I must do this with using microcontroller such as PIC by coding in PicBasic. Do u think this is possible as we filter in PC programming? If it is possible can you help me for programming plz.



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