can CC3200 LPDS mode wake up by UDP packet?

Hi Markii,

Yes, CC3200 in LPDS can wake up by UDP packets.
Please check out the 'idle_profile' example provided in SDK.

Regards,
Ankur

Hi Ankur,

I had referenced "idle_profile_nonos" example.
below is part of my code

while(1)
{
cc_idle_task_pm(); //enter LPDS mode
DataRec();
}

this while loop is in main, all I want to do is if there is nothing from internet then enter LPDS mode.
DataRec function code as below:

void DataRec()
{
int datalen;
datalen = sl_RecvFrom(iSockID, g_cBsdBuf, BUF_SIZE, MSG_DONTWAIT, ( SlSockAddr_t *)&sAddr, (SlSocklen_t*)&iAddrSize );
if(datalen > 0)
CommandPaser(datalen); //analysis receiving data
}

only network connection can wakeup device and go to DataRec()
when I sent UDP socket to it, nothing happened
it seems still at LPDS mode
would you please give me some hints why it doesn't work
thanks~

Hi Markii,

Now I understand your problem.
In code

while(1)
{
cc_idle_task_pm(); //enter LPDS mode
DataRec();
}

calling the 'cc_idle_task_pm()' will put the device in LPDS mode and the device is not waiting for any data hence can't wake up once the data is received.

Please note if using the blocking socket, call to API 'sl_RecvFrom()' will be blocking ou can use the hook provided in the host driver to put the system in LPDS mode while using the blocking API. Please checkout the function 'SimpleLinkSyncWaitLoopCallback()' in "idle_profile_non_os" example.

so your loo[ should be

while(1)
{
DataRec();
}

and 'SimpleLinkSyncWaitLoopCallback()' should be used to put the system in LPDS mode.

Regards,
Ankur

Hi Ankur,

I had tried this method, but it did not work.
I add below two functions in main.c and I am sure device is blocking on 'sl_RecvFrom()'
but it seems never enter LPDS mode
would you please tell me more detail about how to put system in LPDS mode in this circumstance~
thanks~

void SimpleLinkSyncWaitLoopCallback()
{
set_host_irq_as_lpds_wk_src(true);
cc_idle_task_pm();
set_host_irq_as_lpds_wk_src(false);
}

void vApplicationIdleHook( void)
{
SimpleLinkSyncWaitLoopCallback();
}

Markii,

I have some doubts related to your application.
Are you using OS environment or Non-OS? In the previous post you are referring to Non-OS example but in this post you are using 'vApplicationIdleHook()' which is used in OS applications.

Regards,
Ankur

Hi Ankur,

I am using Non-OS.
I saw other threads mentioned that when system idle would call 'vApplicationIdleHook()'.
I just try it.
so how can I put system to LPDS mode when system is blocking on 'sl_RecvFrom()' in Non-OS environment?
thanks~~~

Hi Ankur,

thanks a lot~~