CCS/CC2640R2F: GATT_Indicate multi packet

Giuseppe_pe

Expert 1930 points

Part Number: CC2640R2F

Tool/software: Code Composer Studio

Hi,

I need to send an Indication with more that 20 Byte (with Bluetooth 4.0), can I send multi packet with Indicate or do I need to use Notify?

Thanks.

over 7 years ago

0 DavidL over 7 years ago

TI__Mastermind 25045 points

Hello,

Yes you can, please take a look at the Data Service in the Project Zero example.

http://dev.ti.com/tirex/content/simplelink_academy_cc2640r2sdk_1_14_02_04/modules/blestack/ble_01_basic/ble_01_basic.html

Best regards,

David

0 Giuseppe_pe over 7 years ago in reply to DavidL

Expert 1930 points

Hi,

thanks for your help,

I don't understand how Data Service send a multi packet with an indicate.

For example I need to send a 40 byte packet, so i have send 2 packet (20 byte each).

I woul axpect to find a loop that call GATTServApp_ProcessCharCfg two times.

The first time with the first 20 byte, it waits the ACK, and after it send the second 20 byte, with an other call to GATTServApp_ProcessCharCfg .

Is it right?

Thanks.

Best regards.

Giuseppe

0 DavidL over 7 years ago in reply to Giuseppe_pe

TI__Mastermind 25045 points

Hello Giuseppe,

I think it is easier just to change the stream length, look into data_service.h (DS_STREAM_LEN from 20 to 40).

Hopefully this helps.

David

Bluetooth®︎

Bluetooth forum

CCS/CC2640R2F: GATT_Indicate multi packet