nRF54L15 DFU mode

[Andre MULLER]

Hello, we want to evaluate the BLE ISP2454-LX chip.

To do this we bought from RUTRONIK FRANCE an ISP2454-LX-EB evaluation board with the ISP2454-LX-TB test board.

SDK : nRF Connect SDK Bare Metal v2.0.0

Tool Chain : nRF Connect SDK Toolchain v3.3.0

Softdevice : bm_nrf54l15dk/nrf54l15/cpuapp/s145_softdevice

We want to put the nRF54L15 device in the NORDIC DFU mode programmatically.

On nRF52832 device we do this :

            // Write Magic Pattern and ...
            NRF_POWER->GPREGRET = 0xB1;
            // Reset
            NVIC_SystemReset();

So, my question is : how can we do this (put device in DFU mode) on a nRF54L15 device ?

Thanks.

Best Regards.

Andre Muller.

[Simonr]

Hi Andre Muller

Please see the documentation pages on DFU in the nRF Connect SDK Bare Metal option. Running the DFU process is described here: https://nrfconnectdocs.nordicsemi.com/ncs-bm/latest/nrf-bm/app_dev/dfu/ug_dfu.html 

Best regards,

Simon

[Andre MULLER]

Hello, I tried the sample mcuboot_recovery_retention with S145_softdevice/mcuboot.

Compiling and flashing is OK.

But, I have this errors :

*** Booting MCUboot v2.3.0-dev-fce4dac2e629 ***
*** Using nRF Connect SDK Bare Metal v2.0.0-e9041d77ec4c ***
I: Starting bootloader
E: ED25519 signature verification failed -140
E: ED25519 signature verification failed -140
E: ED25519 signature verification failed -140
E: Error: no bootable configuration found
E: Unable to find bootable image

Best regards.

Andre.