CYW89820BWMLGT MAC address changing

[AkNa_4845671]

Hi, 

We have integrated CYW89820BWMLGT module with imx6ul processor and have flashed firmware.bin and minidriver.bin firmware to this chipset. We tried changing MAC address using bdaddr command [bdaddr -i hci0 00:01:E3:64:DD:9B] but, we were unsuccessful in doing the same. The output after we run the same command is as shown below:

Manufacturer: Cypress Semiconductor Corporation (305)
Device address: 20:81:9A:1F:4F:50

Unsupported manufacturer

We also tried changing the MAC address by using the hcitool command [hcitool cmd 0x3f 0x001 0x01 0x23 0x45 0x67 0x89 0xab] but, we were not able to do the same either. The output after we run the same command is as shown below:

HCI Command: ogf 0x3f, ocf 0x0001, plen 6
AB 89 67 45 23 01
> HCI Event: 0x0e plen 4
01 01 FC 00

Please look into the same and kindly guide us on if there are any other commands that needs to be executed for changing the bluetooth MAC address.

Regards,

Akshay Naik

[SheetalJ · Accepted solution]

Hi Akshay,

Please check hcitool command here- How to change Bluetooth MAC address on Raspberry Pi 4  

Can't Set Bluetooth MAC Address 

Since CYW89820 is not a broad market chip, there is a limitation on supporting it in Community. So for more details and documentations, I would suggest you to contact the Cypress Sales - https://www.cypress.com/about-us/sales-offices

CYW89820 product guide: https://community.cypress.com/t5/Resource-Library/CYW89820-Product-Guide/ta-p/259242