CC2541: CC2541

Hi Vasyl,

It's not entirely clear what you are doing, but you should not be calling sleep functions manually. Whenever no tasks are active, the sleep mechanism will put the device to sleep in any case.

Let's say you are advertising, and you want to sleep for a while instead of advertising. What you do then is to disable advertising and set an osal timer to wake you up later so you can restart advertising.

Technically, if no BLE activity is ongoing, you could call the sleep functions with no adverse effect, but if the stack is active, synchronization between the stack state, radio compare registers, the radio mac timer and the sleep timer will probably get out of sync and things will not work.

Best regards,
Aslak

Hi Aslak,

Thanks for the prompt reply.
I do not calling the sleep function manually, I just added the detection of an obstacle by an infrared sensor in function halSleep, and if there is no obstacle then continue sleep for another 100 ms. I do this to minimize consumption (without performing a complete wakeup mechanism). But now it's not important any more, I solved the problem the problem. I stopped Advertising, stopped Discovery and unsubscribed from the periodic timer. Next, in the halSleep function, I check if there is a a next timout for wakeup, if not, then only in this case I enabling the infrared detector.

It looks like this,

instead :
// HAL_SLEEP_PM3 is entered only if the timeout is zero
halPwrMgtMode = (timeout == 0) ? HAL_SLEEP_DEEP : HAL_SLEEP_TIMER;

I added :
if( timeout == 0 )
{
timeout = HAL_SLEEP_MS_TO_32KHZ( 100 );
sleepDeep = 1;
}
halPwrMgtMode = HAL_SLEEP_TIMER;

then I analyze variable sleepDeep

while(1)
{
HAL_SLEEP_SET_POWER_MODE();
If( !sleepDeep )
break;
if( IRSensorObstacleDetected() )
break;
/* if obstacle not detected, go to sleep again on 100 ms */
sleepTimer = halSleepReadTimer();
halSleepSetTimer( sleepTimer, HAL_SLEEP_MS_TO_32KHZ( 100) );
}

After a full wake up, I will resume the Advertising, Discovery and the periodic timer.

Now the Advertising work fine! Thanks you!

But the discovery does not work still.
I continue to look for this problem.