Write unique ID

[jampino]

Posted on August 16, 2017 at 16:58

Hello everyone,

I have the BLUENRG-1 running and working ( advertising, creating connections, sleeping ).

Now I would like to write a unique ID in each bluenrg-1 and then read it when the application starts up but not really sure how I should do it.

Can anyone help me on this.

Thanks

[Micha Valach]

Posted on October 24, 2017 at 07:18

Hi Jamp,

You can use a random() function to create a random 6 bytes Mac Address, then save those 6 bytes in your Flash.

Once power up, for the very 1'st time, those 6 bytes might be all 0xff - then you might apply the random() function and save those 6 bytes to the Flash, next Power up time if those bytes are different then 0xff , use those bytes from flash as Mac Address. or if your BLE client is a mobile app, you can have a small utility which sends any 6 bytes of Mac address and then the Server (advertiser) will save those to Flash and use those as defined Mac.

Thanks, Micha  

[jampino]

Posted on October 24, 2017 at 10:32

Hello Micha,

Thanks for your answer, we have got how to do it already but thank you.

Kind regards

[Andrea Palmieri]

Posted on October 25, 2017 at 11:43

Hi Jamp,

each BlueNRG-1 device has natively a unique random static address that can be retrieved using the following ACI API:

uint8_t address[6];

uint8_t data_len_out;

aci_hal_read_config_data(CONFIG_DATA_RANDOM_ADDRESS, &data_len_out, address);

On the other hand, if you need to overwrite it, you can use:

hci_le_set_random_address(random_address);

Kind regards

Andrea