The `ubx_evknorab12_nrf5340` BSP is NOT included in u-blox-sho-OpenCPU GitHub repository

[dsconyers]

I'm following section 3.2.3 of the EVK-NORA-B1 User Guide. I have 2 EVK-NORA-B126 boards that I'm trying to provision to evaluate their RF range. I copied the entire .\zephyr\boards\arm\ubx_evknorab10_nrf5340 folder into the NCS directory .\ncs\vX.Y.Z\zephyr\boards\arm, but Visual Studio Code doesn't recognize ubx_evknorab12_nrf5340_cpuapp as a valid board (i.e. doesn't show up in drop down list). It recognizes ubx_evknorab10_nrf5340_cpuapp, but not the ubx_evknorab12_nrf5340_cpuapp(the variant with the integrated Skyworks FEM). See attached screenshot.

I then searched the contents of the all the files in the .\zephyr\boards\arm directory (including sub-directories) for ubx_evknorab12_nrf5340 and found no results.

1. Related Products: EVK-NORA-B12x Series

2. Pre-setup Conditions: Obtain any EVK-NORA-B12x board.

3. Reproducibility Rate: 100%

4. Detail Steps to Reproduce: Follow the instructions starting in section 3 of the EVK-NORA-B1 User Guide using any EVK-NORA-12x board to attempt to load an NCS sample application.

5. Expected Test Results: ubx_evknorab12_nrf5340BSP would be included in the u-blox-sho-OpenCPU GitHub repository.

6. Actual Test Results: ubx_evknorab12_nrf5340BSP is NOT included in the u-blox-sho-OpenCPU GitHub repository.

[brec-u-blox]

The board package ubx_evknora_b12 is not yet ready for release. In the meantime, Nordic Semiconductor has instructions for adding 2-pin FEM support here: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/app_dev/working_with_fem/index.html#ug-radio-fem-skyworks It does not seem complete as it only mentions adding a node to the devicetree, but does not list other dependencies. We have opened a ticket with Nordic.

[dsconyers]

Hi Bob,

Any update on this? I'm just curious if anyone at U-blox has successfully loaded a sample application onto an EVK-NORA-B12 that successfully makes use of the FEM to evaluate its range, which is my short term goal. Thanks!

[brec-u-blox]

I have it working. I just need to tidy up the files. I'll have something for you later today.

[brec-u-blox]

Until we have the full BSP ready, you can use the files here with the nrf5340dk_nrf5340 board. The zip file attached has the peripheral_lbs example modified to operate the FEM control pins on NORA-B12. The main files to check are:

• ./boards/nrf5340dk_nrf5340_cpuapp.overlay
• ./boards/nrf5340dk_nrf5340_cpuappns.overlay
• ./child_image/hci_rpmsg.conf
• ./child_image/hci_rpmsg.overlay I ran this on both the EVK-NORA-B106 and EVK-NORA-B126. I observed P1.08 and P1.09 toggling as expected. The NORA-B106 does not have the FEM, where NORA-B126 does. I observed approximately 10 dB RSSI difference betwen them when scanning on my iPhone using the nRF Connect mobile app.

Also, please note this SDK errata regarding actual vs. set output power: [CONFIG_BT_CTLR_TX_PWR_ANTENNA](https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.2.0/kconfig/index.html#CONFIG_BT_CTLR_TX_PWR_ANTENNA)

Project file: peripheral_lbs_with_nora-b12_fem_ncs220.zip

[dsconyers]

Hi Bob,

Thanks! I can see TX_EN & RX_EN toggling as shown below:

[brec-u-blox]

EVK-NORA-B12 added. See https://github.com/u-blox/u-blox-sho-OpenCPU/pull/18.

[brec-u-blox]

Merged PR with updates.