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error C202 undefined identifier

Shah Anwar

Hi,

I defined,

Uint16 TCounts[10]; in globals.h

and tried to use it in cc01drv.c where #include "globals.h" is there.

but during build the error msg coming up is, "C202 undefined identifier"

Why this is happening, I haven't initialize the array.

Parents
  • 0 in reply to Andy Neil

    Hi,

    I realized I need to declare the variable twice like,
    #ifdef _MAIN_
    Float32 eedata;
    #else
    extern Float32 eedata;
    Now, it is compiling. I need to understand it furthur details later.

    But now I am facing other issue. I am trying to store the ADC readings in an array. Original decleration is,

    Globals.h
    extern volatile unsigned int xdata TCounts;
    /* store for raw ADC readings*/

    Now I declared,
    globals.h
    extern Uint16 RawTCounts[10];

    Interrupt handlers I defined a 1 sec clock and tried to store TCounts every sec, rolling FIFO type.

    RawCounts[n]=TCounts;

    With output commands I found RawTCounts[n] values are far way from TCounts, like TCounts is 9359h and RawTCounts[0]= 4710h and no movement at all.
    Being an Electronic Engineer I don't what I'm missing!! I put the assignment command inside the calc.c function where original TCounts were used then moved it to interrupt handler thinking it might miss the Flag etc.

Reply
  • 0 in reply to Andy Neil

    Hi,

    I realized I need to declare the variable twice like,
    #ifdef _MAIN_
    Float32 eedata;
    #else
    extern Float32 eedata;
    Now, it is compiling. I need to understand it furthur details later.

    But now I am facing other issue. I am trying to store the ADC readings in an array. Original decleration is,

    Globals.h
    extern volatile unsigned int xdata TCounts;
    /* store for raw ADC readings*/

    Now I declared,
    globals.h
    extern Uint16 RawTCounts[10];

    Interrupt handlers I defined a 1 sec clock and tried to store TCounts every sec, rolling FIFO type.

    RawCounts[n]=TCounts;

    With output commands I found RawTCounts[n] values are far way from TCounts, like TCounts is 9359h and RawTCounts[0]= 4710h and no movement at all.
    Being an Electronic Engineer I don't what I'm missing!! I put the assignment command inside the calc.c function where original TCounts were used then moved it to interrupt handler thinking it might miss the Flag etc.

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