Setting REGOUT0 in merged.hex

RE: Setting REGOUT0 in merged.hex

mlac — Thu, 28 Nov 2024 22:07:55 GMT

Thank you so much, it's working!

RE: Setting REGOUT0 in merged.hex

Susheel Nuguru — Wed, 27 Nov 2024 13:03:01 GMT

I am sorry, missed to see this ticket. I think I created a wrong hex file, but my intention was to show you how it is done.

There are so many ways to create an intel HEX one I could think of is using objcopy

printf "\x05\x00\x00\x00" > regout0.bin
arm-none-eabi-objcopy --adjust-vma=0x10001304 -I binary -O ihex regout0.bin regout0.hex
mergehex -m app.hex regout0.hex -o merged.hex
nrfjprog --program merged.hex --verify
nrfjprog --memrd 0x10001304 --n 4

I think that should work.

RE: Setting REGOUT0 in merged.hex

mlac — Sat, 23 Nov 2024 20:46:13 GMT

Hi Susheel,

`mergehex --merge dongle-merged-3ba9eec.hex regout0.hex --output dongle-merged-3ba9eec-regout0.hex` yields:

Failed to parse line 1 : ":0403040050000005E3"ERROR: One of the files to merge is not a valid hex file.

devzone.nordicsemi.com/.../dongle_2D00_merged_2D00_3ba9eec.hex

devzone.nordicsemi.com/.../regout0.hex

Can you help with this error?

RE: Setting REGOUT0 in merged.hex

Susheel Nuguru — Wed, 20 Nov 2024 09:07:00 GMT

Laszlo,

I think it is getting complicated with the changes going the route of having it in linker file. I think simpler would be just add it to the merged.hex in a different way.

I had another thought

create a regout0.hex with this content

:020000041000EA
:0403040050000005E3
:00000001FF

and add custom merge in CMakeLists.txt

# Path to the custom HEX file
set(REGOUT0_HEX ${CMAKE_CURRENT_SOURCE_DIR}/regout0.hex)

# Append REGOUT0_HEX to the final merged.hex
add_custom_command(
    TARGET ${APPLICATION}
    POST_BUILD
    COMMAND mergehex --merge ${CMAKE_BINARY_DIR}/zephyr/merged.hex ${REGOUT0_HEX} --output ${CMAKE_BINARY_DIR}/zephyr/merged_with_regout.hex
    COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_BINARY_DIR}/zephyr/merged_with_regout.hex ${CMAKE_BINARY_DIR}/zephyr/merged.hex
)

verify through nrfjprog after you flash this new merged.hex

nrfjprog --readcode output.hex
grep "10001304" output.hex

RE: Setting REGOUT0 in merged.hex

mlac — Tue, 19 Nov 2024 21:41:02 GMT

Thanks for your help, Susheel!

Unfortunately, the suggested solution didn't make a difference. I used claude.ai to get closer to the solution.

Instead of using set_property or set, I used:

zephyr_linker_sources(SECTIONS my_regout0_settings.ld)

Which included the my_regout0_settings.ld

But then the build failed because the UICR memory section wasn't present, so I included it:

MEMORY
{
UICR (rw) : ORIGIN = 0x10001000, LENGTH = 0x1000
}

The build failed due to multiple memory sections, so I included the following in the device tree:

soc {

uicr: uicr@10001000 {

compatible = "zephyr,memory-region";

reg = <0x10001000 0x1000>;

zephyr,memory-region = "UICR";

status = "okay";

};

The above devicetree fragment created the memory section in linker.cmd.

Then I added the following to my_regout0_settings.ld:

SECTIONS
{
.uicr_regout0 (0x10001304) :
{
KEEP(*(.uicr_regout0))
} >UICR
}

The build failed, presumably because of multiple sections. I added the following devicetree fragment which doesn't make a difference:

regout0_partition: partition@10001304 {

compatible = "zephyr,code-partition";

reg = <0x10001304 0x4>;

zephyr,memory-region = "UICR";

zephyr,section-name = "uicr_regout0";

};

I'm stuck at this point.

Do any of you at Nordic have further suggestions?

RE: Setting REGOUT0 in merged.hex

Susheel Nuguru — Tue, 19 Nov 2024 15:53:15 GMT

There should be one way that I think you can try using linked script

add a linker script in your project folder for example my_regout0_settings.ld like this

SECTIONS
{
    .uicr_regout0 (0x10001304) :
    {
        KEEP(*(.uicr_regout0))
    } >UICR
}

In your CMakeLists.txt: Include the custom linker script in the build process:

set_property(GLOBAL APPEND PROPERTY linker_script custom_uicr.ld)

If set_property does not work, then just use set

In your application somewhere, set the REGOUT0 value like this

__attribute__((section(".uicr_regout0")))
const uint32_t regout0 = 0xFFFFFF05; // 3.3V