Not able to update firmware over UART using MCUboot: flag shows pending

RE: Not able to update firmware over UART using MCUboot: flag shows pending

Sigurd Hellesvik — Tue, 22 Aug 2023 13:49:17 GMT

Hi,

I will continue to help in this case.

In your case, I would recommend using Serial Recovery mode.
See my unofficial explanation and samples at https://github.com/hellesvik-nordic/samples_for_nrf_connect_sdk/tree/main/bootloader_samples/serial_recovery

Regards,
Sigurd Hellesvik

RE: Not able to update firmware over UART using MCUboot: flag shows pending

lorao — Sun, 20 Aug 2023 14:32:14 GMT

Hung Bui

I am trying to implement a logic on nRF52840, to send image file over UART in bootloader mode.
Please can you suggest what needs to be taken care for this.

Note: I don't want to use dependencies like mcumgr.

Thank you

RE: Not able to update firmware over UART using MCUboot: flag shows pending

Hung Bui — Mon, 07 Aug 2023 14:44:08 GMT

Hi Rao,

I am not really sure what you are planning to do.

Are you following any example ? Have you looked at \zephyr\tests\subsys\dfu\img_util example ?

RE: Not able to update firmware over UART using MCUboot: flag shows pending

lorao — Mon, 07 Aug 2023 13:33:20 GMT

Hung Bui

It works fine, when just flash_img.h is included.

But, when I try to use flash_img_init_id and flash_img_buffered_write which is defined in flash_img.h shows an linker error. Also tried to add this in CmakeList.txt, but still shows an linker error:

Error:

Thank you

RE: Not able to update firmware over UART using MCUboot: flag shows pending

Hung Bui — Wed, 02 Aug 2023 14:51:46 GMT

Hi Rao,

Sigurd is away for a few weeks and I will take over the case.

Could you please explain what you want to achieve with the LED ?

As far as I know the CONFIG_MCUBOOT_INDICATION_LED only works with the MCUBoot serial recovery mode.
So if the device doesn't enter the MCUBoot's recovery mode, the LED will not turn on.
When the MCUBoot enters serial recovery mode, it will not boot the application.
So I don't expect to see the LED to be turned on when the application is running.

RE: Not able to update firmware over UART using MCUboot: flag shows pending

lorao — Tue, 01 Aug 2023 08:12:37 GMT

Sigurd Hellesvik

I am using CONFIG_MCUBOOT_SERIAL from 'ncs\v2.4.0\bootloader\mcuboot\boot\zephyr\main.c' in the application running on nRF52840dk.

And the CONFIG_MCUBOOT_SERIAL is configured to use LED (as shown below)

Also included in mcuboot.conf file (see below)

But the LED doesn't go ON when this application is executed.
Please can you comment here, if something else needs to be taken care?

Thankyou

RE: Not able to update firmware over UART using MCUboot: flag shows pending

Sigurd Hellesvik — Tue, 25 Jul 2023 09:31:33 GMT

[quote user="lorao"] am trying to update firmware from one nordic board to an other nordic board.
Is it possible to do it without using mcumgr command? [/quote]

Yes. you can use an SMP Client on one nordic board and an SMP Server on another nordic board.
See my answer in RE: Trying to perform OTA to a nRF52840 device via nRF9160 LTE connection

RE: Not able to update firmware over UART using MCUboot: flag shows pending

lorao — Sun, 23 Jul 2023 20:14:59 GMT

Sigurd Hellesvik
I am trying to update firmware from one nordic board to an other nordic board.
Is it possible to do it without using mcumgr command?

Can we send a custom commands to SMP server over UART in order to update the firmware?
Please let me know the possibilities here.

Thank you!!

RE: Not able to update firmware over UART using MCUboot: flag shows pending

Sigurd Hellesvik — Tue, 18 Jul 2023 12:27:37 GMT

In that case, the USB TTL serial cable has an COM port or ACM port for use.
This port can be refferenced by mcumgr

RE: Not able to update firmware over UART using MCUboot: flag shows pending

lorao — Tue, 18 Jul 2023 05:50:39 GMT

Sigurd Hellesvik Yes im using USB TTL Serial cables.

RE: Not able to update firmware over UART using MCUboot: flag shows pending

Sigurd Hellesvik — Mon, 17 Jul 2023 07:03:06 GMT

How will you connect the UART from your laptop?

Will you use some kind of USB to UART converter?

RE: Not able to update firmware over UART using MCUboot: flag shows pending

lorao — Sun, 16 Jul 2023 21:28:38 GMT

Sigurd Hellesvik Thank you for the link.
Since I'm trying to run SMP client using UART (run in the laptop), where it can send commands to SMP server, I did not find any example or document for UART.

Please can you suggest what method can be followed here and any example that can be used by modifying it.

Thank you

RE: Not able to update firmware over UART using MCUboot: flag shows pending

Sigurd Hellesvik — Thu, 13 Jul 2023 08:06:51 GMT

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.4.0/zephyr/services/device_mgmt/mcumgr.html

RE: Not able to update firmware over UART using MCUboot: flag shows pending

lorao — Wed, 12 Jul 2023 16:56:23 GMT

Sigurd Hellesvik with v2.4.0 it works fine.

Please can you provide an example for "SMP Client" (to transfer over UART) or suggestions on how to implement this?
I am planning to run SMP Client in my laptop itself, to update firmware over UART.

Any information on this is much appreciated.
Thanks!

RE: Not able to update firmware over UART using MCUboot: flag shows pending

Sigurd Hellesvik — Wed, 12 Jul 2023 12:34:24 GMT

In v2.4.0, Serial Recovery was upgraded to print some more information about the image.

What you see is expected before v2.4.0

RE: Not able to update firmware over UART using MCUboot: flag shows pending

lorao — Wed, 12 Jul 2023 10:48:58 GMT

Sigurd Hellesvik Thank you so much for the feedback.
I will try it again if not then I will use 'ncs 2.4.0' version.

Also in my case I dont see the 'hash' value as shown below:

Images:
image=0 slot=0
version: 0.0.0.0
bootable: false
flags:
hash: Unavailable
Split status: N/A (0)

Any reason why

RE: Not able to update firmware over UART using MCUboot: flag shows pending

Sigurd Hellesvik — Wed, 12 Jul 2023 09:27:34 GMT

Your sample works for me. See the recording:

devzone.nordicsemi.com/.../main.c-_2D00_-MCUboot_5F00_FW_5F00_update_5F00_wait_5F00_time-_2D00_-Visual-Studio-Code-2023_2D00_07_2D00_12-11_2D00_20_2D00_02.mp4

RE: Not able to update firmware over UART using MCUboot: flag shows pending

lorao — Tue, 11 Jul 2023 16:53:15 GMT

Sigurd Hellesvik Please find the attachment below:
Issue: I can update the image file but the application does not run after update And also it stays in the bootloader mode.
Thank you

RE: Not able to update firmware over UART using MCUboot: flag shows pending

Sigurd Hellesvik — Tue, 11 Jul 2023 14:40:08 GMT

[quote user="lorao"]

CONFIG_BOOT_SERIAL_WAIT_FOR_DFU=y

CONFIG_BOOT_SERIAL_WAIT_FOR_DFU_TIMEOUT=10000

[/quote]

I tried this briefly, and I can update the application multiple times.

Can you upload a zip of the sample you use so I can use that to reproduce?

RE: Not able to update firmware over UART using MCUboot: flag shows pending

lorao — Mon, 10 Jul 2023 14:22:43 GMT

Sigurd Hellesvik Now the bootloader lit's up the LED for 5 sec and waits for mcumgr command and if there are no commands send in 5 sec then LED turn off (works as expected)

But after updating the application firmware, and resetting the device, then later the LED turns ON back after 5 secs and never runs the application.

And it works fine if the below configs are not included:

# Enable wait for DFU functionality

CONFIG_BOOT_SERIAL_WAIT_FOR_DFU=y

CONFIG_BOOT_SERIAL_WAIT_FOR_DFU_TIMEOUT=10000

RE: Not able to update firmware over UART using MCUboot: flag shows pending

Sigurd Hellesvik — Mon, 10 Jul 2023 13:30:41 GMT

This works fine on my end.

Turns out that CONFIG_MCUBOOT_INDICATION_LED only works for Button mode, and is not supported for Wait mode.

If you want to enable this for Wait mode, you can apply these changes temporarily to MCUboot:

diff --git a/boot/zephyr/main.c b/boot/zephyr/main.c
index 2c5f9afd..3081f845 100644
--- a/boot/zephyr/main.c
+++ b/boot/zephyr/main.c
@@ -620,9 +620,14 @@ void main(void)
      * some time, so it's better to reuse thistime to already receive the
      * initial mcumgr command(s) into our buffers
      */
+
+#ifdef CONFIG_MCUBOOT_INDICATION_LED
+        gpio_pin_set_dt(&led0, 1);
+#endif
     rc = boot_console_init();
     int timeout_in_ms = CONFIG_BOOT_SERIAL_WAIT_FOR_DFU_TIMEOUT;
     uint32_t start = k_uptime_get_32();
+
 #endif
 
     FIH_CALL(boot_go, fih_rc, &rsp);
@@ -646,6 +651,10 @@ void main(void)
         timeout_in_ms = 1;
     }
     boot_serial_check_start(&boot_funcs,timeout_in_ms);
+
+#ifdef CONFIG_MCUBOOT_INDICATION_LED
+        gpio_pin_set_dt(&led0, 0);
+#endif
 #endif
 
     if (FIH_NOT_EQ(fih_rc, FIH_SUCCESS)) {

Are you able to see that sys_reboot(SYS_REBOOT_COLD) works with these changes?

RE: Not able to update firmware over UART using MCUboot: flag shows pending

lorao — Mon, 10 Jul 2023 12:55:10 GMT

Sigurd Hellesvik Yes by pressing button 1 while power cycle the bootloader runs fine.
Also LED lights up (LED 1) for mcuboot_serial_recovery_uart

But not with reset button

RE: Not able to update firmware over UART using MCUboot: flag shows pending

Sigurd Hellesvik — Mon, 10 Jul 2023 11:53:25 GMT

Does the bootloader run if you reboot the device manually? (via button or reset pin)

Also, try to set CONFIG_MCUBOOT_INDICATION_LED for MCUboot, and see if the LED lights up

RE: Not able to update firmware over UART using MCUboot: flag shows pending

lorao — Mon, 10 Jul 2023 11:50:13 GMT

Sigurd Hellesvik I have implemented UART handler to call sys_reboot(SYS_REBOOT_COLD).
And using bootloader from your example mcuboot_serial_recovery_uart by adding

# Enable wait for DFU functionality

CONFIG_BOOT_SERIAL_WAIT_FOR_DFU=y

CONFIG_BOOT_SERIAL_WAIT_FOR_DFU_TIMEOUT=10000

And it does not start bootloader after reboot.
Please can you suggest, if something else needs to be taken care of.

Thank you!

RE: Not able to update firmware over UART using MCUboot: flag shows pending

Sigurd Hellesvik — Mon, 10 Jul 2023 06:49:36 GMT

[quote user="Sigurd Hellesvik"]In your application, you can create an UART handler which calls sys_reboot() on your device.[/quote]

Main application

[quote user="Sigurd Hellesvik"]Then send an mcumgr command during the wait period.[/quote]

External device.

The bootlaoder runs before the application, and stops when the application is running
Therefore, you can not receive input to the bootloader when the main application is running.
The device must be reset for the bootloader to run again.