nrf52840 and sky66112-11 configuration

RE: nrf52840 and sky66112-11 configuration

Starbuck — Mon, 19 Feb 2024 21:53:21 GMT

I had a similar issue and resolved it. It is documented here:
How to achieve a measured conductive Tx Power of +21 dBm using any NCS sample app?

RE: nrf52840 and sky66112-11 configuration

Marciano-PL — Fri, 08 Sep 2023 17:45:13 GMT

Searching through the codebase for NCS 2.2.0 I can't seem to find any C code that uses these devicetree elements (cps-gpios for example).

There is a sample in NCS in samples/bluetooth/direct_test_mode which implements some source-code to queue off of these nodes which might be transferable into your project.

RE: nrf52840 and sky66112-11 configuration

galbh — Mon, 16 Jan 2023 14:16:45 GMT

i'm also trying to use the Skywroks FEM in a Fanstel BT840X module.

I'm using the samples/bluetooth/throughput example under NCS v2.2.0, where the BT840X is the central and a nRF52840DK is the peripheral.

everything is working as expected before I enable the FEM but once I enable it only scanning works and connections are not established with reason 0x3e.

I added the following to the dts:

/ {
    nrf_radio_fem: sky_fem {
       compatible = "skyworks,sky66112-11", "generic-fem-two-ctrl-pins";
       ctx-gpios = <&gpio0 17 GPIO_ACTIVE_HIGH>;
       crx-gpios = <&gpio0 19 GPIO_ACTIVE_HIGH>;
       cps-gpios = <&gpio0 6 GPIO_ACTIVE_HIGH>;
       chl-gpios = <&gpio0 8 GPIO_ACTIVE_HIGH>;
    };
 };

I enabled both CONFIG_MPSL and CONFIG_MPSL_FEM, and I set the CPS pin to 0 and CHL pin to 1 on app init.

I even tried to set the GPIO pins to the LEDs to make sure it's toggling..

what can be the problem?

console output:

*** Booting Zephyr OS build v3.2.99-ncs1 ***
Starting Bluetooth Throughput example
I: SoftDevice Controller build revision:
I: 6d 90 41 2a 38 e8 ad 17 |m.A*8...
I: 29 a5 03 38 39 27 d7 85 |)..89'..
I: 1f 85 d8 e1             |....


: HW Platform: Nordic Semiconductor (0x0002)
I: HW Variant: nRF52x (0x0002)
I: Firmware: Standard Bluetooth controller (0x00) Version 109.16784 Build 2917677098
I: Identity: E3:88:C7:BC:5C:91 (random)
I: HCI: version 5.3 (0x0c) revision 0x11fa, manufacturer 0x0059
I: LMP: version 5.3 (0x0c) subver 0x11fa
Bluetooth initialized


Central. Starting scanning
Button disable error: -2
32muart:~$ Filter not match. Address: 62:DC:D0:B3:28:00 (random) connectable: 0
Filter not match. Address: 62:DC:D0:B3:28:00 (random) connectable: 0
Filter not match. Address: 00:50:E6:3D:4B:D7 (random) connectable: 0
Filter not match. Address: 44:5C:E9:7C:C9:F5 (public) connectable: 0
Filters matched. Address: C4:7C:FE:52:CF:3A (random) connectable: 1
Connected as central
Conn. interval is 320 units
Service not found
Disconnected (reason 0x3e)

RE: nrf52840 and sky66112-11 configuration

Glen M — Thu, 13 Oct 2022 14:08:08 GMT

Not yet. I have another support ticket going right now on this same issue here: devzone.nordicsemi.com/.../skyworks-fem-control-with-802-15-4-with-ncs-zephyr-2-0-0

RE: nrf52840 and sky66112-11 configuration

melgor — Thu, 13 Oct 2022 11:14:39 GMT

Did you solve the issue? Same Fanstell module, similar problem.

RE: nrf52840 and sky66112-11 configuration

Glen M — Wed, 21 Sep 2022 19:29:30 GMT

Did you resolve this issue? I'm using the same Fanstel module and I'm trying to get the amplifier working.

RE: nrf52840 and sky66112-11 configuration

Piwy — Wed, 10 Aug 2022 10:04:22 GMT

Hi,

I occured the same issue with EV-BT840XE.

I have enabled both config, but do we need some code to control it ? or juste enabled both config and put the Skyworks front-end module in the device tree should work ?

RE: nrf52840 and sky66112-11 configuration

eabreyer — Tue, 28 Jun 2022 14:53:25 GMT

I do have those enabled, yes. At this point, I think we are having a hardware (possibly power) problem unless there's anything else in software you can think of.

RE: nrf52840 and sky66112-11 configuration

Bendik Heiskel — Tue, 28 Jun 2022 07:41:56 GMT

HI Eric,

Have you enabled CONFIG_MPSL and CONFIG_MPSL_FEM?

I have tested the Skyworks fem support using a nRF52840DK and a SKY66112-11E, and it worked as expected.

Best regards,

Bendik