Hi, I've a runtime error in several function when it try to access structure data generally pass as a parameter to the function.
the first instance of the problem is:
signed portBASE_TYPE xQueueGenericReceive( xQueueHandle pxQueue, void * const p\
vBuffer, portTickType xTicksToWait, portBASE_TYPE xJustPeeking )
{
..............
if( pxQueue->uxMessagesWaiting > ( unsigned portBASE_TY\
PE ) 0 )
.......................
}
where pxQueue is a structure:
typedef xQUEUE * xQueueHandle;
with:
typedef struct QueueDefinition
{
signed char *pcHead; /*< Points to the begin\
ning of the queue storage area. */
signed char *pcTail; /*< Points to the byte \
at the end of the queue storage area. Once more byte is allocated than necessa\
ry to store the queue items, this is used as a marker. */
signed char *pcWriteTo; /*< Points to the free \
next place in the storage area. */
signed char *pcReadFrom;
| /*< Points to the last \ |
place that a queued item was read from. */
| xList xTasksWaitingToSend; | /*< List of tas\ |
ks that are blocked waiting to post onto this queue. Stored in priority order.\
*/
| xList xTasksWaitingToReceive; | /*< List of tasks that \ |
are blocked waiting to read from this queue. Stored in priority order. */
| volatile unsigned portBASE_TYPE uxMessagesWaiting;/*< The number of ite\ |
ms currently in the queue. */
| unsigned portBASE_TYPE uxLength; | /*< The length of the q\ |
ueue defined as the number of items it will hold, not the number of bytes. */
| unsigned portBASE_TYPE uxItemSize; | /*< The size of each it\ |
ems that the queue will hold. */
| signed portBASE_TYPE xRxLock; | /*< Stores the number o\ |
f items received from the queue (removed from the queue) while the queue was lo\
cked. Set to queueUNLOCKED when the queue is not locked. */
| signed portBASE_TYPE xTxLock; | /*< Stores the number o\ |
f items transmitted to the queue (added to the queue)
while the queue was locke\
d. Set to queueUNLOCKED when the queue is not locked. */
} xQUEUE;
the runtime error is:
.....
| COREB: start xQueueGenericReceive | |
| COREB: execption 24 addr 3c00384 | |
| COREB: coreb dump stack | |
| COREB: found fp: ff700900 | |
| COREB: call frame 0 -12 feb055e2 | |
| COREB: call frame 0 -11 00000000 | |
| COREB: call frame 0 -9 00000000 | |
| COREB: call frame 0 -8 ff7008d0 |
......
Similarly, I've the same problem with the following function:
void vListRemove( xListItem *pxItemToRemove )
{
xList * pxList;
pxItemToRemove->pxNext->pxPrevious = pxItemToRemove->pxPrevious;
pxItemToRemove->pxPrevious->pxNext = pxItemToRemove->pxNext;
}
where pxItemToRemove->pxPrevious can be read but not pxItemToRemove->pxNext->pxPrevious
it structure is:
struct xLIST_ITEM
{
portTickType xItemValue; /*< The value b\
eing listed. In most cases this is used to sort the list in descending order. \
*/
volatile struct xLIST_ITEM * pxNext; /*< Pointer to the next xListIt\
em in the list. */
volatile struct xLIST_ITEM * pxPrevious;/*< Pointer to the previous xLi\
stItem in the list. */
void * pvOwner; /*< Poi\
nter to the object (normally a TCB) that contains the list item. There is ther\
efore a two way link between the object containing the list item and the list i\
tem itself. */
void * pvContainer; /*< Poi\
nter to the list in which this list item is placed (if any). */
};
typedef struct xLIST_ITEM xListItem; /* For some reason lint wants t\
his as two separate definitions. */
the runtime error is:
| COREB: got to vTaskDelete | |
| COREB: pxTCB GLI prev: a5a5a5a5 | |
| COREB: sent to list: 3d02004 | |
| COREB: list_rem px prev: a5a5a5a5 | |
| COREB: execption 24 addr 3c05444 | |
| COREB: coreb dump stack | |
| COREB: found fp: ff7008fc | |
| COREB: call frame 0 -12 feb055e2 | |
| COREB: call frame 0 -11 00000000 | |
| COREB: call frame 0 -9 00000000 | |
| COREB: call frame 0 -8 ff7008cc | |
| COREB: call frame 0 -7 ff700ff4 |
Thank you in advance.
William
