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As mentioned above, the registered callback handler is executed whenever a value was written to a mapped variable node.
| Code Block | ||
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static void appl_fieldbusVariableChangeExec(
void *pCbArg, /**< application specific callback argument */
uint32_t fbVarId0, /**< fieldbus specific variable ID 0 */
uint32_t fbVarId1, /**< fieldbus specific variable ID 1 */
uint32_t fbVarId2, /**< fieldbus specific variable ID 2 */
void *pData, /**< new fieldbus variable value */
uint32_t size /**< size of new value (if non-numeric data type) */
)
{
GOAL_APPL_FB_HANDLER_T *pFbHandle; /* fieldbus handle */
uint32_t cpySize; /* string copy size */
pFbHandle = (GOAL_APPL_FB_HANDLER_T *) pCbArg;
if ((GOAL_APPL_FB_VAR2_ID0 == fbVarId0) &&
(GOAL_APPL_FB_VAR2_ID1 == fbVarId1) &&
(GOAL_APPL_FB_VAR2_ID2 == fbVarId2)) {
goal_logInfo("write access to variable 02: %"FMT_d32, *((int32_t *) pData));
GOAL_MEMCPY(&pFbHandle->var02, pData, size);
}
/* ... */
} |
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