BLE Multiple Packet Advertisement

Onur Efe66

Other Parts Discussed in Thread: CC2541

Hi,

I want to get CC2541 SoC advertising different advertisement packets periodically. For example I want it to advertise ten packet of A and then one packet of B, and repeat this process indefinitely. I know I can switch advertisement packets by updating advertisement data, but there is a problem with this method. I couldn't find any solution to send a definite number of a packet. Because there isn't an indicator that a packet is advertised for X(any number) times. Also I couldn't find a callback prototype to count advertisement events. So how can i determine the time for updating advertisement data?

So I'm stuck with this problem and your answers will be very helpful. Thanks.

over 8 years ago

0 Kadari Rajamallaiah over 8 years ago

Intellectual 685 points

Hi Onur ,

Is there any possibility to count no.of Advertisement packets delivered by cc2541 ble since it powered up?

0 Onur Efe66 over 8 years ago in reply to Kadari Rajamallaiah

Prodigy 50 points

Hi Kadari,

I guess not. I didn't see any function for this. But I thought, may be I can find a way to count RF core interrupts.

0 JXS over 8 years ago in reply to Onur Efe66

TI__Guru** 105180 points

Hello,

Although no count is available, you can empirically determine by total time from start to stop, or incrementing a counter using the Advertising event complete event which is sent after each Adv event completes (HCI_EXT_ADV_EVENT_NOTICE).

Best wishes

0 Onur Efe66 over 8 years ago in reply to JXS

Prodigy 50 points

Hello,

Thank you very much, this will be very helpful:)

0 Onur Efe66 over 8 years ago in reply to JXS

Prodigy 50 points

Hi Mastermind,

Sorry but i couldn't apply your second method(which depends on advertising complete events). My main problem is about getting adv events. There are some hci events handled in peripheral.c file. But all of them is consisted of 1 octet. Events are sent via osal message system. Which uses a message header structure osal_event_hdr_t. The struct has uint8 typed event and status variables. The problem is HCI_EXT_ADV_EVENT_NOTICE event opcode consists of 2 octets. So i guess i misunderstood something. Could you please explain me how to handle HCI_EXT_ADV_EVENT_NOTICE event?

0 Tim C over 8 years ago in reply to Onur Efe66

TI__Mastermind 34660 points

Yes, there is not really a good way to do this before 1.4.1. I would recommend using 1.4.1. Section 5.6 of the software developer's guide included with the stack describes how to do this.

0 Onur Efe66 over 8 years ago in reply to Tim C

Prodigy 50 points

Hello Tim,

I read the part you refered in Software Developer's Guide and i guess my problem is solved. Thank you very much:)

0 Kadari Rajamallaiah over 8 years ago in reply to Onur Efe66

Intellectual 685 points

Hello Tim /JXS ,

I am getting an osal_event from HCI_EXT_AdvEventNoticeCmd( uint8 taskID, uint16 taskEvent ) after advertisement event completes , but this is happening initially once . I want to count total advertisement frames .

Can you suggest do I need to do any changes in my code

0 Tim C over 8 years ago in reply to Kadari Rajamallaiah

TI__Mastermind 34660 points

It sounds like you are copying the command incorrectly from the API guide. It has been verified to work correctly.

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BLE Multiple Packet Advertisement