Changing BLE address through Program in PSoC 4 BLE

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Changing BLE address through Program in PSoC 4 BLE

MKN_4249821
Level 2
Level 2
‎Mar 25, 2020 09:22 AM
‎Mar 25, 2020 09:22 AM
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Hi,

I am trying out "Mesh Flood Direct" example on PSoC 4 BLE 256Kb device. I got the example from github.

I modified the code and executed on CY8C4248LQI-BL583 module. When I assigned node address from CySmart windows application I got message like flash operation successful. But Device address didn't get change.

I have changed the following lines of code for 256KB device.

#define USER_SFLASH_ROW_SIZE            (256u)

#define USER_SFLASH_ROWS                (4u)        /* Total number of user SFlash rows supported by the device */

#define USER_SFLASH_BASE_ADDRESS        (0x0FFFF400u)      /* Starting address of user SFlash row for 256KB PSoC 4 BLE device */       

So, My question is about node address.

> Does device address changes if we assign node address or it just gets stored in SuperVisory Flash?

> Is Node address and BLE physical address(address while advertising) same?

> Can we change BLE physical address through application?

Please help me on this as soon as possible.

Thanks,

MKN

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Re: Changing BLE address through Program in PSoC 4 BLE

Yugandhar
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500 solutions authored 1000 replies posted 5 likes given
In response to MKN_4249821
‎Mar 30, 2020 01:57 AM
‎Mar 30, 2020 01:57 AM
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Hello,

Public Device Addresses are comprised of a 24-bit company ID and a 24-bit company-assigned number (unique for each device). Public Device Addresses do not change over time.

Random Device Address is a randomly generated address which is classified into two types, Static Random Address and Private Random Address. Please refer to the section 7.2.1 Bluetooth Address Types in the datasheet for more information.

Every Privacy-enabled BLE device has a unique address called the Identity Address. The Identity Address is the Public Address or Static Address of the BLE device. This Identity address is used for resolving the private address of a device.


If you write the first 6 bytes(non-zero values) of ROW0 in SFLASH (with 0x00 as byte 7 in ROW0) using CySysSFlashWriteUserRow() API, then the device will take the BLE address as public address.

Please refer to the KBA Setting Bluetooth Device Address – KBA211407  for more information.

Thanks,
P Yugandhar.

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