custom board for nrf5340

[RHeine]

Hi,

I want to do a custom developpement (custom board) for my project.

I have copied  to a folder on drive D/: the peripherial_uart sample, as well as the folder Board/arm/nrf5340dk...

I modified the CMakeList.txt file by adding "list(APPEND BOARD_ROOT${CMAKE_CURRENT_SOURCE_DIR})"

as described in the webinar "Getting start with custom development in nRF Connect SDK".

But during the build, west will look for the board folder on the drive C:/.

How do I get it to take the file from drive D:/ ?

I try also , as described in zephyr 2.6.99, : " west build -b nrf5340boardv3_cpuapp -- -DBOARD_ROOT=D:\COMMUN\Firmware\accesscontrolsoftware\firmware\trunk\nRF5340DK_Test3\peripheral_uart\boards",

but same result, west go to zephyr_base on C:/.

Best Regards,

Rob.

[Øivind]

Hi,

You may encounter issues by having the sdk on C:/ and the project and board files on D:/.
I have not yet been able to make it work.

This will get you one step further:

There must be a space between BOARD_ROOT and ${CMAKE_CURRENT_SOURCE_DIR} in
list(APPEND BOARD_ROOT ${CMAKE_CURRENT_SOURCE_DIR})

For "west build -b nrf5340boardv3_cpuapp -- -DBOARD_ROOT=D:\COMMUN\Firmware\accesscontrolsoftware\firmware\trunk\nRF5340DK_Test3\peripheral_uart\boards",
you must use forward slash ( / ), and end at the folder containing the "boards" folder.
For example: west build -b nrf5340boardv3_cpuapp -- -DBOARD_ROOT=D:/COMMUN/Firmware/accesscontrolsoftware/firmware/trunk/nRF5340DK_Test3/peripheral_uart

[RHeine]

Hi,

Thank you for your answer, but I do not all understand.

I use peripheral_uart from V1.5.0 and I want to make a custom development with a custom board around this sample.

I changed my folder place, I put it into the C drive:

C:\Users\elect\projets_nordic\nRF5340DK_TestA\peripheral_uart.

On the webinar "Getting start with custom development in nRF Connect SDK", your coworker use:

"list(APPEND BOARD_ROOT ${CMAKE_CURRENT_SOURCE_DIR})" before "find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})" in the CMakeLists.txt.

With this command he can have a another folder than ncs/V1.5.0/nrf/sample.

If put the folder boards/arm/nrf5340boardv3a into: C:\Users\elect\projets_nordic\nRF5340DK_TestA\peripheral_uart

I make on command_prompt: west build -b nrf5340boardv3a_cpuapp

west make me an error: "No board named 'nrf5340boardv3a_cpuapp' found."

I try also : west build -b nrf5340boardv3a_cpuapp -- -DBOARD_ROOT=C:/Users/elect/projets_nordic/nRF5340DK_TestA/peripheral_uart/boards/arm/nrf5340boardv3a

west make me the same error.

If put the folder boards/arm/nrf5340boardv3a into: C:\Users\elect\ncs\v1.5.0\zephyr\boards\arm

I make on command_prompt: west build -b nrf5340boardv3a_cpuapp, it work successfull.

What should I do to that west take the board file from my folder  C:\Users\elect\projets_nordic\nRF5340DK_TestA\peripheral_uart/boards/arm/nrf5340boardv3a ?

Best Regards,

Rob.

[RHeine]

Thank you for your help !

With out "/boards/arm/nrf5340boardv3a" it's work very well on the C drive !

[Øivind]

Great to hear!

Let me know if there is anything else I can help with.

[RHeine]

Hi,

I have some other questions.

I tested the consommation of peripheral_uart, I measured 0.87mA.

What are the ways to reduce this consommation ?

I try to change the interval between the advertising but it do not reduce the consommation.

Now, I will try to use only netcore, I try to modify hci_rpmsg with the peripheral_uart code, but I have some error that I can not resolve for the moment.

I juste include:

#include <bluetooth/gatt.h> in the main.c of hci_rpmsg project.

west gives me this error:

"error: 'CONFIG_BT_MAX_PAIRED' undeclared here"

I try to write CONFIG_BT_MAX_PAIRED=1 in the prj.conf but it do not change nothing.

Is it possible to reduce the consommation if we just use one core ?

Best Regards,

Rob.

[Øivind]

That sounds like it should be possible.

Since this is significantly different from the original question, could you open a new ticket for this? It helps with searchability.

[RHeine]

Ok, I will make a new ticket.