ESP32 Forum

Posted: **Thu Aug 04, 2022 8:57 am**

Hello. I use BLE raw advertisment and I notice that some company ID's that I try from :
https://www.bluetooth.com/specification ... entifiers/

Are showing as Unknown company ID.

I use the following raw advertising structure:

Code: Select all

    raw_adv_data2[0] = 0x02;
    raw_adv_data2[1] = 0x01;
    raw_adv_data2[2] = 0x06;

    raw_adv_data2[3] = 0x03; // length
    raw_adv_data2[4] = 0xFF; // flag company ID
// must be set in reverse. If I want to set 0x0BB0 I must write first 0xB0 and then 0x0B
    raw_adv_data2[5] = 0xB0; 
    raw_adv_data2[6] = 0x0B;


    raw_adv_data2[7] = 0x05; // length
    raw_adv_data2[8] = 0x09; //local name
    raw_adv_data2[9] = 0x33; 
    raw_adv_data2[10] = 0x33;
    raw_adv_data2[11] = 0x33; 
    raw_adv_data2[12] = 0x33;

For example, the above sets the company ID to Ecolab Inc (0x0BB0) . When I check at raw data on the LightBlue app, I see the following company ID:
https://imgur.com/a/jwR1L1z

I then try to set to company ID to 0x02 0xff which is (Silicon Laboratories)

Code: Select all

    raw_adv_data2[0] = 0x02;
    raw_adv_data2[1] = 0x01;
    raw_adv_data2[2] = 0x06;

    raw_adv_data2[3] = 0x03; // length
    raw_adv_data2[4] = 0xFF; // flag company ID
// must be set in reverse. If I want to set 0x0BB0 I must write first 0xB0 and then 0x0B
    raw_adv_data2[5] = 0xff; 
    raw_adv_data2[6] = 0x02;


    raw_adv_data2[7] = 0x05; // length
    raw_adv_data2[8] = 0x09; //local name
    raw_adv_data2[9] = 0x33; 
    raw_adv_data2[10] = 0x33;
    raw_adv_data2[11] = 0x33; 
    raw_adv_data2[12] = 0x33;

I can see the company ID displayed as Silicon laboratories:

https://imgur.com/a/zveNvVT

Could someone help me understand what is the issue here?

Posted: **Thu Aug 04, 2022 11:27 pm**

Im guessing you are asking about company IDs displayed in nrf connect.
Here is better place to ask the question:
https://github.com/nrfconnect/sdk-nrf

but the answer is simple; the database in app is not updated.

ESP32 Forum

BLE Raw advertising some company id's are showing as Unknown company

BLE Raw advertising some company id's are showing as Unknown company

Re: BLE Raw advertising some company id's are showing as Unknown company