RTOS/SIMPLELINK-CC2640R2-SDK: why extended advertise didn't work in sample project?

Kim Hyun Jun

Intellectual 270 points

Part Number: SIMPLELINK-CC2640R2-SDK

Tool/software: TI-RTOS

I'm working with ble5 Central and peripheral project

I change advertData[] more then 35 byte for test.

and I scan it using central project. and using mobile phone.

but It's seem to not work... this advertdata can't find...

when I set advetData[] length 25 byte it work!!

I found that setting code for extended advertise data exsist in peripheral project .

here is what I set advertData and not modified setting code.

plz let me know what I didn't do....

------------ADVERTDATA------------------

-----------Default Setting data -------------

over 6 years ago

0 Christin Lee over 6 years ago

TI__Guru 56215 points

Hi,

The advertData array is used both for legacy advertising and advertising extension, therefore when you increase the advertData to more than 31 bytes, the program will not run since it violates the spec for legacy advertising limits.

You need to create another array to have more than 31 bytes for the adv extension feature.

0 Kim Hyun Jun over 6 years ago in reply to Christin Lee

Intellectual 270 points

thank you for reply.
but I remove all line of "advHandleLegacy" written.
so there are only one handle that use advertData named advHandleLongRange.
but when I remove "advHandleLegacy" I can't find my device... advHandleLongRange alive but why advert data is not visible?? even data length is 20byte... not extended mode..

0 Christin Lee over 6 years ago in reply to Kim Hyun Jun

TI__Guru 56215 points

You don't need to remove all the legacy ones. All you need to do is to add one more array and make sure the advHandleLongRange is using the new adv data array which have more than 31 bytes.

How do you view adverting data in LRM? Your phone might not support BT5 spec.

I would recommend you to take a look at our SimpleLink Academy : Bluetooth Low Energy Scanning and Advertising

When you are advertising using long range mode, then it's advertising extension. Legacy advertising can only be used on 1M PHY. When enable LRM doing advertising, there is no advertising data in the normal advertising channels. The packet in advertising channels contains only a pointer to where the adv data is going to be sent from which data channel.

0 Kim Hyun Jun over 6 years ago in reply to Christin Lee

Intellectual 270 points

All you need to do is to add one more array and make sure the advHandleLongRange is using the new adv data array which have more than 31 bytes.

thank you.

But it's seem to be not work... I create buffer sized 33byte.

I tested in two ways.

1. using my phone.. (iPhone 8+ - ble5.0, using TI SensorTag application)

- extended advertisement data is not shown ..

2. Using two of device, one Simple_peripheral project, other one is Central project.

- extended advertisement data is not shown ..

-------------------------------------------------------------------------------------------------------------

// Advertisement data
static uint8_t advertData[] =
{
0x02, // length of this data
GAP_ADTYPE_FLAGS,
DEFAULT_DISCOVERABLE_MODE | GAP_ADTYPE_FLAGS_BREDR_NOT_SUPPORTED,

// service UUID, to notify central devices what services are included
// in this peripheral
0x03, // length of this data
GAP_ADTYPE_16BIT_MORE, // some of the UUID's, but not all
LO_UINT16(SIMPLEPROFILE_SERV_UUID),
HI_UINT16(SIMPLEPROFILE_SERV_UUID),

    20,
    GAP_ADTYPE_MANUFACTURER_SPECIFIC,
    1,
    2,
    3,
    4,
    5,
    6,
    7,
    8,
    9,
    10,
    11,
    12,
    13,
    14,
    15,
    16,
    17,
    18,
    19,
};

static uint8_t advertDataLong[] =
{
0x02, // length of this data
GAP_ADTYPE_FLAGS,
DEFAULT_DISCOVERABLE_MODE | GAP_ADTYPE_FLAGS_BREDR_NOT_SUPPORTED,

    26,
    GAP_ADTYPE_MANUFACTURER_SPECIFIC,
    1,
    2,
    3,
    4,
    5,
    6,
    7,
    8,
    9,
    10,
    11,
    12,
    13,
    14,
    15,
    16,
    17,
    18,
    19,
    20,
    21,
    22,
    23,
    24,
    25

};

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initialize code