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AREthSDSubscribeEventGroup

Valid for: CANoe DE • CANoe4SW DE

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Function Syntax

long AREthSDSubscribeEventGroup( dword cevgHandle, LONG tillReboot );

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Description

An Event Group that was unregistered at the node (consumer) using the AREthSDDesubscribeEventGroup function can be registered again with this function. The associated Service Discovery message (Subscribe Eventgroup) is then sent.

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Parameters

  • cevgHandle: Handle of the Consumed Event Group (see AREthAddConsumedEventGroup).
  • tillReboot:
    • 1: The TTL is set to the value infinite when registered. The registration of the Eventgroup (Subscribe Eventgroup) is performed once and is retained until a communication partner (producer or consumer) is restarted.
    • 0: The TTL is set to the preset value (see AREthSetProperty). The registration of the Event Group is sent multiple times.

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Return Values

  • 0: The function was successfully executed
  • >0: Error code

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Example

variables
{
  DWORD aep; // application endpoint handle
  DWORD csi; // consumed Service Instance handle
  DWORD ceg; // consumed Eventgroup handle
  DWORD cev; // consumed Event handle
}

on start()
{
  // open application endpoint
  aep = AREthOpenLocalApplicationEndpoint(17, 50002);
  // create Service Instance
  csi = AREthCreateConsumedServiceInstance(aep,10,1);
  // create Eventgroup
  ceg = AREthAddConsumedEventGroup(csi,1);
  // create Event Consumer
  cev = AREthCreateEventConsumer(csi,1,"CallbackEvent1");
}

void CallbackEvent1(DWORD cevHandle, DWORD messageHandle)
{
  // this function is called if the Event was sent. Parameters can be evaluated here.
}

on key 'd'
{
  AREthSDDesubscribeEventGroup(ceg);
  write("Event Group is no longer subscribed");
}

on key 's'
{
  AREthSDSubscribeEventgroup (ceg,1);
  write("Event Group will now be subscribed again");
}
See Also 
- [AREthSDDesubscribeEventGroup](CAPLfunctionAREthSDDesubscribeEventGroup.md#aanchor20104)
- [AREthSDReleaseService](CAPLfunctionAREthSDReleaseService.md#aanchor14012)
- [AREthSDRequireService](CAPLfunctionAREthSDRequireService.md#aanchor3056)
- [AREthSDSetServiceStatus](CAPLfunctionAREthSDSetServiceStatus.md#aanchor28236)
- [AREthSDSubscribeEventGroup](#aanchor24988)