devel@lists.zephyrproject.org | How to flash static mac address into zephyr ?

icephyr

#5447

Hi guys,

I met a problem and hope someone can help me here.

I want to use nrf52832 as a tag device and can locate it by its mac address, so I have to flash pre-assigned static address into nrf52832 running zephyr project, since nrf chip don't have a pre-assigned mac address.

I wonder if there is any method to implement this function ?

Thanks a lot if anyone can help.

frv

#5448
Edited

Hi icephyr,

I'm far from a Zephyr BLE expert, but I had this process in mind what could be a solution.

As Nordic doesn't store a public BLE device address in flash I would try to implement the following steps:

store the public address in Nordic's UICR (http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.nrf52832.ps.v1.1%2Fuicr.html), Example of writing via nrfjprog, nrfjprog --memwr 0x10001208 --val 0xffffff00 See/search also the Nordic Dev zone for how to do read/write from UICR, eg. https://devzone.nordicsemi.com/f/nordic-q-a/18257/how-to-write-data-to-uicr-customer-registers
not sure if this is the best implementation (place to add in code), but you could add to the hci_init() function (subsys/bluetooth/host/hci_core.c), see bt_setup_id_addr(), if no public address is set, to readout here the UICR (NRF_UCIR) as public address instead of the random address.

Good luck.

Best regards,
Frank

Johannes Hutter

#5449

Just for your information: There is a PR that adds UICR support to the nrfx flash driver:
https://github.com/zephyrproject-rtos/zephyr/pull/11410

Best Regards

Joe

Show quoted text

On Thu, Nov 22, 2018 at 9:55 AM frv <F.Vieren@...> wrote:

[Edited Message Follows]
Hi icephyr,

I'm far from a Zephyr BLE expert, but I had this process in mind what could be a solution.

As Nordic doesn't store a public BLE device address in flash I would try to implement the following steps:

store the public address in Nordic's UICR (http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.nrf52832.ps.v1.1%2Fuicr.html), Example of writing via nrfjprog, nrfjprog --memwr 0x10001208 --val 0xffffff00 See/search also the Nordic Dev zone for how to do read/write from UICR, eg. https://devzone.nordicsemi.com/f/nordic-q-a/18257/how-to-write-data-to-uicr-customer-registers

not sure if this is the best implementation (place to add in code), but you could add to the hci_init() function (subsys/bluetooth/host/hci_core.c), see bt_setup_id_addr(), if no public address is set, to readout here the UICR (NRF_UCIR) as public address instead of the random address.

Good luck.

Best regards,
Frank

--

Johannes Hutter
Mail: johannes@...

Workaround GmbH (ProGlove)
Building 64.08a,
Rupert-Mayer-Straße 44, 81379 München

Managing Director: Thomas Kirchner
HRB: 216605 | AG München
USt.-IdNr.: DE298859320

icephyr

#5450

Thanks you guys, it helps a lot. I think this will solve my problem, I will have a try then.

Johannes Hutter

#5451

btw, Frank: Are you editing your messages over the web interface? It really scrambles up the threads on the mailing list and it's hard to tell what was edited.

Show quoted text

On Thu, Nov 22, 2018 at 10:03 AM icephyr <sxzxchen@...> wrote:

Thanks you guys, it helps a lot. I think this will solve my problem, I will have a try then.

--

Johannes Hutter
Mail: johannes@...

Workaround GmbH (ProGlove)
Building 64.08a,
Rupert-Mayer-Straße 44, 81379 München

Managing Director: Thomas Kirchner
HRB: 216605 | AG München
USt.-IdNr.: DE298859320

frv

#5452

Sorry Joe, I will no longer this.
Thanks for reporting it.
Frank

How to flash static mac address into zephyr ? #nrf52832

How to flash static mac address into zephyr ?
#nrf52832