VOID APDetectOverlappingExec(
IN PVOID SystemSpecific1,
IN PVOID FunctionContext,
IN PVOID SystemSpecific2,
IN PVOID SystemSpecific3)
{
#ifdef DOT11_N_SUPPORT
PRTMP_ADAPTER pAd = (RTMP_ADAPTER *)FunctionContext;
if (DetectOverlappingPeriodicRound == 0)
{
/* switch back 20/40 */
if ((pAd->CommonCfg.Channel <=14) && (pAd->CommonCfg.HtCapability.HtCapInfo.ChannelWidth == BW_40))
{
pAd->CommonCfg.AddHTInfo.AddHtInfo.RecomWidth = 1;
pAd->CommonCfg.AddHTInfo.AddHtInfo.ExtChanOffset = pAd->CommonCfg.RegTransmitSetting.field.EXTCHA;
}
}
else
{
if ((DetectOverlappingPeriodicRound == 25) || (DetectOverlappingPeriodicRound == 1))
{
if ((pAd->CommonCfg.Channel <=14) && (pAd->CommonCfg.HtCapability.HtCapInfo.ChannelWidth==BW_40))
{
SendBeaconRequest(pAd, 1);
SendBeaconRequest(pAd, 2);
SendBeaconRequest(pAd, 3);
}
}
DetectOverlappingPeriodicRound--;
}
#endif /* DOT11_N_SUPPORT */
}
void Mac::HandleBeginTransmit(void)
{
ThreadError error = kThreadError_None;
if (otPlatRadioIdle() != kThreadError_None)
{
mBeginTransmit.Post();
ExitNow();
}
switch (mState)
{
case kStateActiveScan:
mSendFrame.SetChannel(mScanChannel);
SendBeaconRequest(mSendFrame);
mSendFrame.SetSequence(0);
break;
case kStateTransmitBeacon:
mSendFrame.SetChannel(mChannel);
SendBeacon(mSendFrame);
mSendFrame.SetSequence(mBeaconSequence++);
break;
case kStateTransmitData:
mSendFrame.SetChannel(mChannel);
SuccessOrExit(error = mSendHead->HandleFrameRequest(mSendFrame));
mSendFrame.SetSequence(mDataSequence);
break;
default:
assert(false);
break;
}
// Security Processing
ProcessTransmitSecurity();
SuccessOrExit(error = otPlatRadioTransmit(&mSendFrame));
if (mSendFrame.GetAckRequest() && !(otPlatRadioGetCaps() & kRadioCapsAckTimeout))
{
mAckTimer.Start(kAckTimeout);
otLogDebgMac("ack timer start\n");
}
exit:
if (error != kThreadError_None)
{
assert(false);
}
}