CC2630: Synchronize Timer with Data Requests

There's a quick way to implement this feature. It actually uses an existing API and slight modifications to the zstacktask.c of the ZStack Core project.

In the processSysConfigWriteReq function of zstacktask.c, replace

if ( pPtr->pReq->has_pollRate )
{
      zgPollRate = (uint16)pPtr->pReq->pollRate;
      osal_nv_write( ZCD_NV_POLL_RATE, 0, sizeof(zgPollRate), &zgPollRate );
}

with

if ( pPtr->pReq->has_pollRate )
{
#ifdef APP_SINGLE_POLL
      if ( pPtr->pReq->pollRate == 1 )
      { 
          NLME_SetPollRate(1); // one time poll
      }
      else
      {
        zgPollRate = (uint16)pPtr->pReq->pollRate;
        osal_nv_write( ZCD_NV_POLL_RATE, 0, sizeof(zgPollRate), &zgPollRate );
      }
#else
      zgPollRate = (uint16)pPtr->pReq->pollRate;
      osal_nv_write( ZCD_NV_POLL_RATE, 0, sizeof(zgPollRate), &zgPollRate );
#endif
}

Make sure to predefine APP_SINGLE_POLL and rebuild the ZStack Core project to enable the changes.

At this point I'll assume that you've successfully connected the CC2630 to a Zigbee network and have turned off automatic polling.
Then, you'd need an interrupt handler in your application to handle the "ready" signal from the master. In this interrupt handler, you would set an event, similar to the following:

static void readySignalHandler()
{
    events |= SINGLE_POLL;

    // notify application of this event
    Semaphore_post(sem);
}

In your application loop where you wait for ICall messages (for example, Switch_process() for the SampleSwitch), you would handle the event as follows:

if (events & SINGLE_POLL)
{
    zstack_sysConfigWriteReq_t writeReq = {0};
    writeReq.has_pollRate = true;
    writeReq.pollRate = 1;
    Zstackapi_sysConfigWriteReq(zswEntity, &writeReq);
}

Essentially the processSysConfigWriteReq function is now taking a special case into consideration: a poll rate value of 1 will trigger a one time poll.

I've initially verified expected functionality. Let us know if this works on your end.