Flash mcumgr hex only

RE: Flash mcumgr hex only

Hung Bui — Thu, 12 May 2022 11:37:56 GMT

HI Shikamaru,

I haven't done this modification myself so I'm not sure what would be the correct way of doing that. But if you have a look at \bootloader\mcuboot\boot\nuttx\src\flash_map_backend\flash_map_backend.c, you can find their own definition of flash read/write/erase API.

I would assume CONFIG_SOC_FLASH_NRF need to be changed so that you can direct MCUBoot to choose your own implementation.

[quote user="Vinay S"]how can I flash only that hex file , do I need any further tools for that purpose.[/quote]

You can flash a hex file using nrfjprog.exe command line tool.

RE: Flash mcumgr hex only

Shikamaru — Thu, 12 May 2022 05:25:11 GMT

[quote userid="2121" url="~/f/nordic-q-a/87797/flash-mcumgr-hex-only/367426#367426"]I would like to clarify that MCUMGR is image management library, it's not a bootloader. The bootloader is MCUBoot. [/quote]

hi hung bui,

My bad !, thanks for the clarification.

[quote userid="2121" url="~/f/nordic-q-a/87797/flash-mcumgr-hex-only/367426#367426"]If you only want the MCUBoot hex file, you can find the hex file inside \build\mcuboot\zephyr folder. [/quote]

Yes got it.

[quote userid="2121" url="~/f/nordic-q-a/87797/flash-mcumgr-hex-only/367426#367426"]Could you let us know what exactly you want to do with the mcuboot hex file ?[/quote]

my requirement is that , " Mcuboot will do booting as well as image swapping or testing" as you mentioned. here while swapping the image it will use flash write or read api's to copy image . so I have custom flash api's(read , write ..etc.) , my requirement is to replace mcuboot' s read, write with our own read and write api's .

For the same purpose I need to understand which all are the files this is utilizing , how do figure it out. Kindly suggest.

[quote userid="2121" url="~/f/nordic-q-a/87797/flash-mcumgr-hex-only/367426#367426"]If you only want the MCUBoot hex file, you can find the hex file inside \build\mcuboot\zephyr folder. [/quote]

and how can I flash only that hex file , do I need any further tools for that purpose.

RE: Flash mcumgr hex only

Hung Bui — Wed, 11 May 2022 13:04:25 GMT

Hi Shikamaru,

I would like to clarify that MCUMGR is image management library, it's not a bootloader. The bootloader is MCUBoot.

If you only want the MCUBoot hex file, you can find the hex file inside \build\mcuboot\zephyr folder.

Could you let us know what exactly you want to do with the mcuboot hex file ? Note that, unlike the bootloader in nRF5 SDK, the MCUBoot bootloader doesn't do DFU process itself (except for Serial recovery mode) it only does the booting and image swapping/testing part.