DFU with internal flash

RE: DFU with internal flash

Zugislav — Tue, 18 Feb 2025 11:57:25 GMT

thank you so much for your help!

ill close the ticket then.

RE: DFU with internal flash

Vidar Berg — Tue, 18 Feb 2025 11:56:13 GMT

Yes, the secondary mcuboot slot will be placed in internal flash unless you enable external flash and configure the secondary slot to be placed in that region.

RE: DFU with internal flash

Zugislav — Tue, 18 Feb 2025 11:31:43 GMT

Also is it possible to do FOTA BLE without external memory since i have some issues with that also.

RE: DFU with internal flash

Zugislav — Tue, 18 Feb 2025 08:39:45 GMT

i receive data from MCU over SPI and nrf54l15 is a SPIS on spi00 that was first used for external flash memory that I do not need, but still I do not know what to do with mcuboot so probably FOTA BLE is easier to be done (since that is other option to implement it).

RE: DFU with internal flash

Vidar Berg — Tue, 18 Feb 2025 08:35:29 GMT

It is possible to use SPI as the transport, but support for this is not implemented in the SDK or in the client tools (auterm, etc). The DK does not have anything to help you connect the SPI interface to your PC either.

RE: DFU with internal flash

Zugislav — Tue, 18 Feb 2025 08:23:25 GMT

yea, but with SPI i just want to write the new firmware and boot it. Like in the picture from DFU over UART from application: https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-9-bootloaders-and-dfu-fota/topic/device-firmware-update-dfu-essentials/

if it is not possible at all then i will just do FOTA over BLE on nrf54l15.

The host for the nrf54l15 is a MCU.

RE: DFU with internal flash

Vidar Berg — Tue, 18 Feb 2025 07:12:41 GMT

The serial recovery mode supports USB and UART, but not SPI. Do you need the FW image to be sent over SPI? In that case, what are you going to use as a host for your nRF54L?

RE: DFU with internal flash

Zugislav — Mon, 17 Feb 2025 14:19:12 GMT

My main plan is that nrf54l15 is a slave on a SPI, i have pins connected with it and to set it to bootloader mode i have a pin connected that will be set to low after a reset pin resets the device.

What i want, if it possible to be achived, to receive in my application from SPI new firmware that is compiled and write it to flash (internal flash not external) and then make a DFU with two pins (reset and bootloader mode) that are all controled by master device. I have made the serial recovery mode and a led is on, so i now that is running, ill just switch the pins to one i need.

i have problems with understanding how to set it up, also basic example in lesson 9 exercise 1 is not detecting anything in AuTerm but it is not what i want.

for nrf54l15 there is no BLE FOTA, but i am trying to do it like this first since i have some contrains.

RE: DFU with internal flash

Vidar Berg — Mon, 17 Feb 2025 14:10:12 GMT

Hello,

Do you plan to perform the update over BLE over a serial interface (USB/UART)?

[quote user=""]Next this i want to do is when i press button 3 on the board i goes in the bootloader and the mcuboot does his thing and upgrades the firmware.
[/quote]

If you have configured mcuboot to enter serial recovery if this button is pressed on startup, then you need to keep this button pressed while the board is reset. Did you try that?

Best regards,

Vidar