/*******************************************************************************
Function:
void EnsureWFisAwake()
Summary:
If PS-Poll is active or the MRF24W is asleep, ensure that it is woken up.
Description:
Called by the WiFi driver when it needs to transmit or receive a data or
mgmt message. If the application has enabled PS-Poll mode and the WiFi
driver has activated PS-Poll mode then this function will deactivate PS-Poll
mode and wake up the MRF24W.
Precondition:
MACInit must be called first.
Parameters:
None.
Returns:
None.
Remarks:
None.
*****************************************************************************/
void EnsureWFisAwake()
{
/* if the application desires the MRF24W to be in PS-Poll mode (PS-Poll with DTIM enabled or disabled */
if ((g_powerSaveState == WF_PS_PS_POLL_DTIM_ENABLED) || (g_powerSaveState == WF_PS_PS_POLL_DTIM_DISABLED))
{
/* if the WF driver has activated PS-Poll */
if (g_psPollActive == true)
{
/* wake up MRF24W */
WFConfigureLowPowerMode(WF_LOW_POWER_MODE_OFF);
}
// will need to put device back into PS-Poll sleep mode after transaction
SetSleepNeeded();
}
}
/*******************************************************************************
Function:
void EnsureWFisAwake()
Summary:
If PS-Poll is active or the MRF24W is asleep, ensure that it is woken up.
Description:
Called by the WiFi driver when it needs to transmit or receive a data or
mgmt message. If the application has enabled PS-Poll mode and the WiFi
driver has activated PS-Poll mode then this function will deactivate PS-Poll
mode and wake up the MRF24W.
Precondition:
MACInit must be called first.
Parameters:
None.
Returns:
None.
Remarks:
None.
*****************************************************************************/
void EnsureWFisAwake()
{
/* if the application desires the MRF24W to be in PS-Poll mode (PS-Poll with DTIM enabled or disabled */
if ((g_powerSaveState == WF_PS_PS_POLL_DTIM_ENABLED) || (g_powerSaveState == WF_PS_PS_POLL_DTIM_DISABLED))
{
/* if the WF driver has activated PS-Poll */
if (g_psPollActive == true)
{
/* wake up MRF24W */
WFConfigureLowPowerMode(WF_LOW_POWER_MODE_OFF);
}
// will need to put device back into PS-Poll sleep mode after transaction
SetSleepNeeded();
#if defined(TCPIP_STACK_USE_EVENT_NOTIFICATION)
WifiAsyncSetEventPending(ASYNC_POWER_SAVE_PENDING); // wake up power save task
#endif
}
}