CC2650: Infinite discovery scan

Olivia

Part Number: CC2650

Hi,

Is there a way to easily detect when the scan res is full, and a way to clear it so that your device continues discovering? Or does it not clear them until they've been processed by the application.

over 7 years ago

0 Christin Lee over 7 years ago

TI__Guru 56215 points

Which BLE STACK are you using?

There is no easy way to detect whether scan response list is full, but what you can do is to check the following parameter.

          scanRes = pEvent->discCmpl.numDevs;

If it reaches the limit, then you can reduce the scan duration to get the msg return to application layer quicker.

The list will be clear every time you restart the scan

0 Olivia over 7 years ago in reply to Christin Lee

Prodigy 170 points

I am using BLE_STACK V.2.2.2 set up as an observer

0 Christin Lee over 7 years ago in reply to Olivia

TI__Guru 56215 points

Hi,

Have you tried the method I have suggested?

0 Olivia over 6 years ago in reply to Christin Lee

Prodigy 170 points

Hi Christin,

I tried reading the value of discCmpl.numDevs as suggested, but it seems to always have a value of 0 or 3. Is there anywhere specific it should be read, and anything my code needs to have in order to update the value

0 Christin Lee over 6 years ago in reply to Olivia

TI__Guru 56215 points

It could just simply be that it either scan nothing or scan 3, as stated, there is no way to detect whether the list is full or not.
To prevent it being full, you would like to either have it report as frequent as possible to prevent the list being full.

What do you want to achieve here?

0 Olivia over 6 years ago in reply to Christin Lee

Prodigy 170 points

Hi Christin,

My goal is to immediately restart the scan as soon as it becomes full since my application gets a bunch of messages other than the ones it wants to process. So I am trying to maximize how many devices it can scan.

0 Christin Lee over 6 years ago in reply to Olivia

TI__Guru 56215 points

As stated, there is not easy way to find out whether it's full or not.
If you want maximize, then just leave the scan window, interval and duration long.

0 Milan Ivanco over 6 years ago in reply to Christin Lee

Prodigy 150 points

scan response you can check with each event at the GAP_DEVICE_INFO_EVENT. When is full restart scanning.

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CC2650: Infinite discovery scan