 |
 |
| View previous topic :: View next topic |
| Author |
Message |
rougie
Joined: 14 Jun 2006
Posts: 31
|
| Code generates errors! |
 Posted: Sun Oct 12, 2008 7:55 pm |
 |
|
Hello,
Can someone tell me why the following code fragment generates errors?
Basically I am passing a pointer of struct type by reference to a function!
| Code: | #include <Dv4685.h>
#include <stdlib.h>
#include <stdlibm.h>
#include <MATH.H>
enum enum_OBJTASK {e_CREATE=1, e_MODIFY, e_FREE};
typedef struct passCode {
int TOUCHES;
int LEAST_X;
int FAR_X;
int LEAST_Y;
int FAR_Y;
int DISP_INTRVL;
int MSG_NUM;
} PASSCODE;
void ULC_PASSC_config_passcode (enum_OBJTASK OBJ_CNTRL,
PASSCODE **obj_PASSCODE,
int TOUCHES,
int ID_LEAST_X,
int ID_FAR_X,
int ID_LEAST_Y,
int ID_FAR_Y,
int DISP_INTERVAL,
int MSG_NUM)
{
switch (OBJ_CNTRL)
{
case e_CREATE:
*obj_PASSCODE = (PASSCODE*) malloc (sizeof (PASSCODE));
case e_MODIFY:
(*obj_PASSCODE)->TOUCHES = TOUCHES;
(*obj_PASSCODE)->LEAST_X = ID_LEAST_X;
(*obj_PASSCODE)->FAR_X = ID_FAR_X;
(*obj_PASSCODE)->LEAST_Y = ID_LEAST_Y;
(*obj_PASSCODE)->FAR_Y = ID_FAR_Y;
(*obj_PASSCODE)->DISP_INTRVL = DISP_INTERVAL;
(*obj_PASSCODE)->MSG_NUM = MSG_NUM;
break;
case e_FREE:
free(*obj_PASSCODE);
*obj_PASSCODE = NULL;
break;
}
}
void main()
{
PASSCODE *obj_PASSCODE; // CREATE A passCode POINTER
ULC_PASSC_config_passcode(e_CREATE, &obj_PASSCODE, 4,0,0,0,0,0,0);
ULC_PASSC_config_passcode(e_FREE, &obj_PASSCODE, 0,0,0,0,0,0,0);
} |
If you just copy the above code and compile you can see how errors will occur.
All help appreciated!
Best regards
Robert |
|
 |
FvM
Joined: 27 Aug 2008
Posts: 2337
Location: Germany
|
|
| Posted: Mon Oct 13, 2008 12:00 am |
|
|
Hello,
please also tell the compiler type and version.
However, I also experienced problems of CCS C to understand double indirection, thus I had to recode some functions used since years with various C compilers. The below version, with should be equivalent to your code, is accepted by PCD V4.079, but I didn't check for correct operation.
| Code: | typedef struct passCode {
int TOUCHES;
int LEAST_X;
int FAR_X;
int LEAST_Y;
int FAR_Y;
int DISP_INTRVL;
int MSG_NUM;
} PASSCODE, *PPASSCODE;
void ULC_PASSC_config_passcode (enum_OBJTASK OBJ_CNTRL,
PPASSCODE *obj_PASSCODE,
int TOUCHES,
int ID_LEAST_X,
int ID_FAR_X,
int ID_LEAST_Y,
int ID_FAR_Y,
int DISP_INTERVAL,
int MSG_NUM)
{
PPASSCODE opc;
switch (OBJ_CNTRL)
{
case e_CREATE:
*obj_PASSCODE = (PPASSCODE) malloc (sizeof (PASSCODE));
opc = *obj_PASSCODE;
case e_MODIFY:
opc->TOUCHES = TOUCHES;
opc->LEAST_X = ID_LEAST_X;
opc->FAR_X = ID_FAR_X;
opc->LEAST_Y = ID_LEAST_Y;
opc->FAR_Y = ID_FAR_Y;
opc->DISP_INTRVL = DISP_INTERVAL;
opc->MSG_NUM = MSG_NUM;
break;
case e_FREE:
free(*obj_PASSCODE);
*obj_PASSCODE = NULL;
break;
}
}
void main()
{
PPASSCODE obj_PASSCODE; // CREATE A passCode POINTER
ULC_PASSC_config_passcode(e_CREATE, &obj_PASSCODE, 4,0,0,0,0,0,0);
ULC_PASSC_config_passcode(e_FREE, &obj_PASSCODE, 0,0,0,0,0,0,0);
}
|
Regards,
Frank |
|
|
Hello FvM
Guest
|
|
| Posted: Tue Oct 14, 2008 2:41 pm |
|
|
Thanks for your post,
I will try to see if CCS comes up with a fix. I was really hoping to use multiple indirection (**).
Or else, I will use your way, which I am sure it works.
I don't understand why CCS compiler has these issues?
Anyways, I thank you very much for your post, much appreciated!
Regards
Roberto |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
FAQ 
Search
Register
Profile 
Log in to check your private messages 
Log in
