Cant get mcuboot to work on a Fanstel module with BT840F (nRF52840)

RE: Cant get mcuboot to work on a Fanstel module with BT840F (nRF52840)

Paskin — Sun, 27 Oct 2024 13:32:34 GMT

Sorry for piggybacking on other question - but had you to define something special to let this module work? I have the same one and it doesn't boot even a standalone application when installed into a third-party M.2 slot - but works perfectly on Fanstel LEW840X board.

RE: Cant get mcuboot to work on a Fanstel module with BT840F (nRF52840)

BobS — Wed, 26 Jul 2023 13:38:47 GMT

I was so anxious to try it, didnt see that line. Thanks

RE: Cant get mcuboot to work on a Fanstel module with BT840F (nRF52840)

Tristen — Wed, 26 Jul 2023 13:06:20 GMT

BobS The link I shared in the above post is one place Nordic has this documented.

RE: Cant get mcuboot to work on a Fanstel module with BT840F (nRF52840)

BobS — Wed, 26 Jul 2023 12:58:40 GMT

Thanks Tristen, that was it. U can see I suspected the overlay wasn't affecting the bootloader. Is this documented in Nordic somewhere? BTW we may need more help getting your RCP sample on this module. Toby's having fun with that. Thanks again.

Bob

RE: Cant get mcuboot to work on a Fanstel module with BT840F (nRF52840)

Tristen — Wed, 26 Jul 2023 12:12:08 GMT

BobS , you need to provide overlays for a child image (e.g. mcuboot) using it's own overlay file. The build system automatically applies any device tree overlay located in the child_image folder provided you follow the schema (e.g. <project_root>/child_image/mcuboot/boards/nrf52840dk_nrf52840.overlay). So make sure your uart0 overlay changes are also applied in the mcuboot child image overlay. By the way, the same thing applies to *.conf files, which can configure the way mcuboot is built. If you haven't already, make sure to set in your parent image conf CONFIG_BOOTLOADER_MCUBOOT=y to signify it will be chain loaded by MCUboot.

For more information regarding multi-image builds, you may be interested in Nordic's documentation here.

RE: Cant get mcuboot to work on a Fanstel module with BT840F (nRF52840)

BobS — Mon, 24 Jul 2023 16:43:27 GMT

I've found no solution to this yet...mcumgr commands timeout.

Should mcuboot work on the Fanstel module with a BT840F?
Should I be using the nRF52840 DK as the platform template for the project? NC for pins 6 and 8 (uart0) on the BT840X. But moving uart0 to 12 and 13 works for the application, not bootloader.
It acts like the overlay doesn't effect the bootloader. Could this be a separate config flag?

Thanks again for any help.

Bob

RE: Cant get mcuboot to work on a Fanstel module with BT840F (nRF52840)

BobS — Tue, 18 Jul 2023 11:41:59 GMT

Hi Tristen,

That's default in the dts file:

/ {

model = "Nordic nRF52840 DK NRF52840";

compatible = "nordic,nrf52840-dk-nrf52840";

chosen {

zephyr,console = &uart0;

zephyr,shell-uart = &uart0;

zephyr,uart-mcumgr = &uart0;

zephyr,bt-mon-uart = &uart0;

zephyr,bt-c2h-uart = &uart0;

zephyr,sram = &sram0;

zephyr,flash = &flash0;

zephyr,code-partition = &slot0_partition;

zephyr,ieee802154 = &ieee802154;

};

I've only changed the uart0 pins:

&uart0

{

compatible = "nordic,nrf-uarte";

current-speed = <115200>;

status = "okay";

//hw-flow-control;

pinctrl-0 = <&uart0_default_alt>;

pinctrl-1 = <&uart0_sleep_alt>;

pinctrl-names = "default", "sleep";

};

&pinctrl

{

uart0_default_alt: uart0_default_alt {

group1 {

psels = <NRF_PSEL(UART_TX, 0, 13)>,

<NRF_PSEL(UART_RX, 0, 12)>,

<NRF_PSEL(UART_RTS, 0, 26)>,

<NRF_PSEL(UART_CTS, 0, 27)>;

};

uart0_sleep_alt: uart0_sleep_alt {

group1 {

psels = <NRF_PSEL(UART_TX, 0, 13)>,

<NRF_PSEL(UART_RX, 0, 12)>,

<NRF_PSEL(UART_RTS, 0, 26)>,

<NRF_PSEL(UART_CTS, 0, 27)>;

// low-power-enable;

};

But I think u r right about some difference in between the Fanstel module and the nRF52840 DK.

BTW, we r in retreat days. Thanks, take care.

Bob

RE: Cant get mcuboot to work on a Fanstel module with BT840F (nRF52840)

Tristen — Mon, 17 Jul 2023 02:18:18 GMT

Bob, take a look at your device tree. Are you selecting the correct “zephyr,uart-mcumgr” chosen node device? Are there any board file discrepancies between your Fanstel and nRF52840 (device trees, defconfigs, etc)?

RE: Cant get mcuboot to work on a Fanstel module with BT840F (nRF52840)

BobS — Fri, 14 Jul 2023 15:34:54 GMT

Hi Bendik,

I'm using the LORA840XE-M2-V1 module specifically. I added the flags u suggested to prj.conf but mcuboot still doesn't respond to mcumgr commands. I see the hello world output on uart0 once the app starts after the 5 sec. This worked without setting these flags so the internal oscillator must be the default?

Is there any way to debug the bootloader? Thanks for the reply.

RE: Cant get mcuboot to work on a Fanstel module with BT840F (nRF52840)

Bendik Heiskel — Fri, 14 Jul 2023 14:42:06 GMT

Hi Bob,

The Fanstel module does not have a 32.768kHz crystal onboard, does your custom board have one connected to P0.00 and P0.01? If not try changing the LFCLK source to the internal RC oscillator by adding these configs:

CONFIG_CLOCK_CONTROL_NRF_K32SRC_XTAL=n
CONFIG_CLOCK_CONTROL_NRF_K32SRC_RC=y

Best regards,

Bendik