multi image example with the nRF5340 DK

[frankbuss]

I'm trying to get multi image to work. I'm using the nRF SDK 2.3.0 with Zephyr. I tried following the instructions here:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/working_with_nrf/nrf53/nrf5340.html#simultaneous-multi-image-dfu

but it is unclear to me how and where to change partition table. I tried different combinations with the partition names and labels, but no luck.

So my goal is now to get one of the sample applications to use multi image first, then I can see what I have to do in my application. I tried "nrf/applications/machine_learning", because it says multi image is already working for it. But when trying to compile with "west build -b nrf5340dk_nrf5340_cpuapp", I get this error:

...bootloader/mcuboot/boot/zephyr/boot_serial_extensions.c:9:10: fatal error: zephyr/mgmt/mcu
mgr/zephyr_groups.h: No such file or directory
   9 | #include <zephyr/mgmt/mcumgr/zephyr_groups.h>
     |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

But it is a pretty big application anyway, so I tried the nrf/samples/bluetooth/peripheral_lbs example, which is also mentioned. Out of the box, it doesn't create a zip file for multi image update. I tried to add the following in prj.conf:

CONFIG_BOOT_UPGRADE_ONLY=y

CONFIG_PCD_APP=y

CONFIG_UPDATEABLE_IMAGE_NUMBER=2

CONFIG_NRF53_MULTI_IMAGE_UPDATE=y

but this results in error messages that BOOT_UPGRADE_ONLY and NRF53_MULTI_IMAGE_UPDATE is undefined.

So how do I change the prj.conf file of the peripheral_lbs to use multi image, and where and how do I specify the partitions for it? My goal is to use only 2 partitions for the internal flash: mcuboot and the first application image. The update and scratch partitions should be on the external QSPI. I also want to update both images, the network core and application core, OTA with nRF Connect.

[Sigurd Hellesvik]

Hi,

Have a look at my unofficial Bootloader samples, and maybe specifically the nRF5340 bootloader samples.

Is this what you need?

PS: These was previously tested for v2.2.0, and there have been some changes to paths for mcumgr in v2.3.0, so you might have to fix some build errors.
The project configuration for multi image should still be the same I think.
Let me know if you need help with these

Regards,
Sigurd Hellesvik

[frankbuss]

Thanks, I tested it with v2.3.0, and it compiles, but when I try the update with the zip file from nRF Connect (latest version 4.26.1) from an Android phone, it spins for a few seconds, and then closes the update dialog, no images are transferred.

[Sigurd Hellesvik]

Did you remember to change something in the application before testing the DFU?

I have struggled some to update the sample to v2.3.0 myself.

But I got something working now.
The sample likely have too many configurations enabled, but it works for me.
I suggest that you test with this sample, and then go from there:

mcuboot_smp_ble_simultaneous_2_3_0.zip

Regards,
Sigurd Hellesvik

[frankbuss]

Thanks, this sample app worked! The application can now be up to 975 kB, says the partition report:

 external_flash (0x800000 - 8192kB):  
+------------------------------------------------+
| 0x0: mcuboot_secondary (0xf4000 - 976kB)       |
| 0xf4000: mcuboot_secondary_1 (0x40000 - 256kB) |
| 0x134000: external_flash (0x6cc000 - 6960kB)   |
+------------------------------------------------+

 flash_primary (0x100000 - 1024kB):  
+-------------------------------------------------+
| 0x0: mcuboot (0xc000 - 48kB)                    |
+---0xc000: mcuboot_primary (0xf4000 - 976kB)-----+
| 0xc000: mcuboot_pad (0x200 - 512B)              |
+---0xc200: mcuboot_primary_app (0xf3e00 - 975kB)-+
| 0xc200: app (0xf3e00 - 975kB)                   |
+-------------------------------------------------+

 otp (0x2fc - 764B):  
+------------------------------+
| 0xff8100: otp (0x2fc - 764B) |
+------------------------------+

 ram_flash (0x40000 - 256kB):  
+------------------------------------------+
| 0x0: mcuboot_primary_1 (0x40000 - 256kB) |
| 0x40000: ram_flash (0x0 - 0B)            |
+------------------------------------------+

 sram_primary (0x80000 - 512kB):  
+-----------------------------------------------+
| 0x20000000: pcd_sram (0x2000 - 8kB)           |
| 0x20002000: sram_primary (0x6e000 - 440kB)    |
| 0x20070000: rpmsg_nrf53_sram (0x10000 - 64kB) |
+-----------------------------------------------+

CPUNET flash_primary (0x40000 - 256kB):  
+--------------------------------------------+
+---0x1000000: b0n_container (0x8800 - 34kB)-+
| 0x1000000: b0n (0x8580 - 33kB)             |
| 0x1008580: provision (0x280 - 640B)        |
+---0x1008800: app (0x37800 - 222kB)---------+
| 0x1008800: hci_rpmsg (0x37800 - 222kB)     |
+--------------------------------------------+

CPUNET sram_primary (0x10000 - 64kB):  
+-------------------------------------------+
| 0x21000000: sram_primary (0x10000 - 64kB) |
+-------------------------------------------+

Will try to use the same settings now for my application.