DFU over UART

RE: DFU over UART

Sigurd Hellesvik — Wed, 29 Nov 2023 11:37:42 GMT

[quote user="Theja"]I also wanted to send a hex file rather than a bin file, but I tried using "zephyr.hex" and it didn't work. Could you please advise me?[/quote]

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

"mcumgr does not understand .hex files, when uploading a new image always use the .bin file."

RE: DFU over UART

Theja — Wed, 29 Nov 2023 10:54:59 GMT

Thank you for your support, it's working after adding
"CONFIG_MCUMGR_CMD_IMG_MGMT=y and CONFIG_MCUMGR_CMD_OS_MGMT=y"

I also wanted to send a hex file rather than a bin file, but I tried using "zephyr.hex" and it didn't work. Could you please advise me?

RE: DFU over UART

Sigurd Hellesvik — Wed, 29 Nov 2023 08:24:16 GMT

[quote user="Theja"]I tried the your sample with "Hello world" application, I'm not able add "CONFIG_MCUMGR_TRANSPORT_UART=y and[/quote]

Which sample? I sent 3 samples.

[quote user="Theja"]However, the command "mcumgr --conntype serial --connstring "COM7" echo hello" is not retuning "hello" and not getting timeout as error aswell, it just gives empty line like this[/quote]

Echo is part of the OS Management group, so you must enable CONFIG_MCUMGR_GRP_OS.

RE: DFU over UART

Theja — Wed, 29 Nov 2023 07:29:10 GMT

Hi,

I tried the your sample with "Hello world" application, I'm not able add "CONFIG_MCUMGR_TRANSPORT_UART=y and

CONFIG_MCUMGR_GRP_IMG=y" in prj.config instead I added "CONFIG_MCUMGR_SMP_UART=y" and build it.

However, the command "mcumgr --conntype serial --connstring "COM7" echo hello" is not retuning "hello" and not getting timeout as error aswell, it just gives empty line like this

"PS C:\hello_world> mcumgr --conntype serial --connstring "COM7" echo hello

PS C:\hello_world> mcumgr --conntype serial --connstring "COM7" echo hello

PS C:\hello_world>"

I read somewhere like mcumgr uses uart0 for the image transfer, if that the case also custom board pins are as per the device tree file.

prj.config file for your ref

# nothing here
CONFIG_BOOTLOADER_MCUBOOT=y
CONFIG_MCUMGR=y
# CONFIG_MCUMGR_TRANSPORT_UART=y
# CONFIG_MCUMGR_GRP_IMG=y
CONFIG_MCUMGR_SMP_UART=y

# CONFIG_MCUMGR_TRANSPORT_UART dependencies
CONFIG_BASE64=y

# CONFIG_MCUMGR_GRP_IMG dependencies
CONFIG_FLASH=y
CONFIG_IMG_MANAGER=y

# CONFIG_IMG_MANAGER dependencies
CONFIG_STREAM_FLASH=y

# CONFIG_MCUMGR dependencies
CONFIG_NET_BUF=y
CONFIG_ZCBOR=y

# Required for CONFIG_IMG_MANAGER
CONFIG_FLASH_MAP=y

Where might it be going wrong?

RE: DFU over UART

Sigurd Hellesvik — Tue, 28 Nov 2023 10:05:50 GMT

Can I suggest that you do Serial recovery from the bootloader instead?
See Serial Recovery.

If you want to do it from the apllicaiton, you can have a look at the SMP Server sample or my unofficial MCUBoot SMP simple sample

Regards,
Sigurd Hellesvik