Chief Delphi - Syntax Error: externs, structs, and macros

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- - Syntax Error: externs, structs, and macros (http://www.chiefdelphi.com/forums/showthread.php?t=34662)

Syntax Error: externs, structs, and macros

Here's the thing: I'm getting a syntax error in 2 seperate lines that are probably related. I have narrowed it down to the point that I know that it is not the next or previous line.

They are:

Code:

BEGIN_MOTOR_LIST(motor_list)

        MOTOR(STRAIGHT,        LeftDrive,        OI_Left,        0,        0,         0,         0,        0,        254,        254) //ME! ME!

//...

END_MOTOR_LIST

Code:

REF_MOTOR_LIST(motor_list);

Here are the dependencies needed to get this:

Code:

#ifdef _MOTORS_H_

#define _MOTORS_H_



typedef enum {NONE,STRAIGHT,POSITION,FISHER} MotorType;



struct motors

{

        enum Motor type;

        char* pwm;

        char* oi;

        char pot;

        char pot_min;

        char pot_max;

        char pot_center;

        char pwm_min;

        char pwm_max;

        char pwm_change;

}



#define BEGIN_MOTOR_LIST(name) struct motors rom name[] = {

#define END_MOTOR_LIST                   {NONE, 0, 0, 0, 0, 0, 0, 0, 0} };

#define REF_MOTOR_LIST(name) extern struct motors name[]

#define PTR_MOTOR_LIST(name) struct motors *name

#define MOTOR(type,pwm,oi,pot,pot_min,pot_max,pot_center,pwm_min,pwm_max,pwm_change) {type, &pwm, &oi, pot, pot_min, pot_max, pot_center, pwm_min, pwm_max, pwm_change },



void DoMotors(PTR_MOTOR_LIST(motorlist));

#endif

Code:

char LeftDrive, RightDrive, E2;

#define OI_Left  p1_y

(unfortunately, it inserted random spaces)

Enlightenment?

Re: Syntax Error: externs, structs, and macros

Code:

#define MOTOR(type,pwm,oi,pot,pot_min,pot_max,pot_center,p  wm_min,pwm_max,pwm_change) {type, &pwm, &oi, pot, pot_min, pot_max, pot_center, pwm_min, pwm_max, pwm_change },

Might it be the marked bit?

Re: Syntax Error: externs, structs, and macros

I didn't spot anything wrong off-hand (other than the space noted by the previous poster, but I'm guessing that was a copy/paste problem?). Something you might try to narrow down the problem is pre-processing the C file to see how your macros worked out. There should be a cpp18.exe as part of the MCC18 package - this is the C preprocessor. Just run:

Code:

cpp18 {filename}.c -I{path to MCC18 include directory} > {filename}.pre

and it will spit the preprocessed file out to {filename}.pre. That might yield some clues.

Re: Syntax Error: externs, structs, and macros

Quote:

Originally Posted by Orborde

Code:

#define MOTOR(type,pwm,oi,pot,pot_min,pot_max,pot_center,p  wm_min,pwm_max,pwm_change) {type, &pwm, &oi, pot, pot_min, pot_max, pot_center, pwm_min, pwm_max, pwm_change },

Might it be the marked bit?

Nope. That's just from the post. Try as I did, I couldn't get rid of it. But it doesn't exist in the file.

Quote:

Originally Posted by Dave Flowerday

Code:

cpp18 {filename}.c -I{path to MCC18 include directory} > {filename}.pre

and it will spit the preprocessed file out to {filename}.pre. That might yield some clues.

Cool! Thanks! I'll try that! :cool: