E1116 and E1009 errors, how to fix?

Hi everyone,

to get straight to the point, i'm getting the following errors:

Error! E1009: Expecting ',' but found '*'
Error! E1116: An id list not allowed except for function definition

and it refers to the following file and code:
file:
sja1000.h,
code:

Code:

---

extern sja1000_result_t sja1000_xmit(HwCanMsgTxType* CAN_TxQueue, TxQueueCtrlType* CAN_TxQueueCtrl);

---

the prototype function wrong, but i have no idea what the problem could be.

the function is writting in sja1000.c

Code:

---

sja1000_result_t sja1000_xmit(HwCanMsgTxType* CAN_TxQueue, TxQueueCtrlType* CAN_TxQueueCtrl)
{
}

---

and i call the function a few times from pcancommon.c with different parameters:

Code:

---

sja1000_result = sja1000_xmit(&CAN11_TxQueue, &CAN11_TxQueueCtrl);
sja1000_result = sja1000_xmit(&CAN12_TxQueue, &CAN12_TxQueueCtrl);
sja1000_result = sja1000_xmit(&CAN21_TxQueue, &CAN21_TxQueueCtrl);
sja1000_result = sja1000_xmit(&CAN22_TxQueue, &CAN22_TxQueueCtrl);

---

'HwCanMsgTxType' and 'TxQueueCtrlType' are structs.

I don't know if this is enough information to clear things up. the code is compiled using the watcom compiler. the codes are used in Matlab.

Thanks for your help!

Robbin

Few informations for answering.

Are you sure that the struct's are defined before the extern definition?

Hi,

The structs are defined in the pcancommon.c file and when i look in the result the compiler gives me, it''s not yet compiled.
I'm not sure how Matlab deals with this.

first the function of sja1000_xmit looked like this:

Code:

---

//sja1000_result_t sja1000_xmit(sja1000_canchip_t* sja1000_canchip_p)

---

but i changed the function cause i needed more functionality. the code within sja1000_xmit used the CAN_TxQueue and CAN_TxQueueCtrl back then as well, but now i'm trying to make it look beter by passing it through using the function.

it could be that i did something wrong with the pointers. first time i'm working really with pointers.

thanks for your reply!

Robbin

But the struct's must be defined somewhere in sja1000.h before the exetrn declaration.
The compiler must know in advance what CAN_..... are!
If you define only in .C file, the compiler fails.
Try to remove it from the .C and move in the .h

I think defining struct in .c file means it's to be hidden.
So you just put 'struct forward declaration' in .h file.

sja1000.h,

Code:

---

typedef struct blablah HwCanMsgTxType;   
typedef strut  foo_bar  TxQueueCtrlType;

extern sja1000_result_t sja1000_xmit(HwCanMsgTxType* CAN_TxQueue, TxQueueCtrlType* CAN_TxQueueCtrl);

---

woops my bad, i meant pcancommon.h. after including a header file the problem was solved.

unlucky i got others in return like:
Error! E1022: Missing or misspelled data type near 'sja1000_canchip_t'
Error! E1022: Missing or misspelled data type near 'sja1000_canchip_t'

i have a struct in sja1000.h:

Code:

---

typedef struct
{
  u32 dwPort;                               
  u32  dwConfigPort;                   
  volatile u8* pvVirtPort;             
  volatile u8* pvVirtConfigPort;         
u16 wIrq;                         
unsigned int nChannel;               
  unsigned int nBoard;
} sja1000_canchip_t;

---

in pcancommon.h i use the struct mentioned above:

Code:

---

typedef struct
{
sja1000_canchip_t* sja1000_canchip; //error on this line
}pcan_candev_t;

---

same error in this struct:

Code:

---

typedef struct
{
    u32 Id;     
    u8  Dlc;     
    u8  Data[8u];
    u8 Board;               
    sja1000_canchip_t* sja1000_canchip_buf; //error on this line
} HwCanMsgTxType;

---

What could be the problem?

thanks

Robbin van den Berg

is sja1000.h included in or before pcancommon.h?