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Using Pragma Vectors outside of main.c

tigiy1987
Prodigy 130 points
Other Parts Discussed in Thread: MSP430G2553

Hello
I have a quesiton. Can we use and define pragma vector's function outside of main (for example in header file or another c file). Can we define it in another c file or header file? For example i want to notify it in header file;

Here is my delay.h

#ifndef DELAY_H 
#define DELAY_H
extern void TimerDelay(unsigned int time);
extern unsigned char delayUs;
extern __interrupt void iis(void);     //compiler gives error for this line
#endif

And here is my delay.c

#include <msp430g2553.h>
#include "delay.h"


#pragma vector = TIMER1_A1_VECTOR
__interrupt void iis(void)
{
switch( TA1IV )
{
case 2: break;
case 4: delayUs--;break;
case 10: break;
}

}

After all, the compiler gives error. How should i define pragma vectors and its function in header file and that header's c file?

Kind regards... 

  • 0
    Guru 46710 points

    Snow said:
    How should i define pragma vectors and its function in header file

    Simply don't. Interrupt routine is not a function you call from your code, so why bother?

  • 0 in reply to Ilmars
    Prodigy 130 points

    I'm try to creating a library and i want to collect all functions and interrupt routines relevant with it  . So we can only use and call interrupt routines from main.c, is it right?

  • 0 in reply to tigiy1987
    Guru 100835 points

    You can define an ISR in any module you want. You don't (shouldn't) call ISRs from anywhere.

    It's not really necessary to declare an ISR in a header file.

    What error is the compiler giving?

  • 0 in reply to tigiy1987
    Guru 46710 points

    Snow said:
    So we can only use and call interrupt routines from main.c, is it right?

    Wrong. ISR routines are called by interrupts, not by your code. Placement of ISR routine does not matter - you can put it in any module. There's no need to define ISR routing in header files.

  • 0 in reply to Ilmars
    Prodigy 30 points

    How would you set that up? For example I have a main.c, aux.h, and aux.c files. aux.h is included in main.c and the ISR is defined in aux.c. It compiles with no errors however the ISR never gets called but if I copy and paste the ISR to the main.c file it works.

  • 0 in reply to RMDS
    Guru 58965 points

    Two ways to do that.

    1. Add the file aux.c to the project.

    3. Include aux.c inside main.c

  • 0 in reply to old_cow_yellow
    Guru 227245 points

    old_cow_yellow said:
    Include aux.c inside main.c

    Well, it is a common rule (even though violated sometimes even by people who should know better) that a .h file doesn't generate any code by its own and a .c file is a separate compilation unit.

    Option "3 of 2" is therefore only used by people who don't want everythign in one .c file (which is good) and are too lazy to write a proper .h file to be included into main.c (which is bad)

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