Interface nRF21540 FEM with nRF5340 a new design.

RE: Interface nRF21540 FEM with nRF5340 a new design.

Martin Sivertsen — Mon, 03 Jan 2022 08:58:37 GMT

Hello,

Apologies for the delay, I have been away on holiday.

I suggest you create a new ticket for this request as the topic is pretty far removed from the original one.

The ticket will be automatically assigned to a Nordic employee and you should get an answer shortly.

Best regards,

Martin S.

RE: Interface nRF21540 FEM with nRF5340 a new design.

KarthikKumar — Tue, 21 Dec 2021 14:53:11 GMT

Hi Martin,

I'm using 2 nRF5340 DK boards. All I want to do is,

1. Make one board as peripheral which only advertise that is set up peripheral initially as an advertiser.

2. Make second board as central which shall scan for the peripheral board, Central will scan for connectable devices (i.e. NRF5340 DK boards) and then establish a BLE connection.

3. Connection will be long range coded PHY (128 kbps).

Tried to find the relevant code for this, Can you please help me with some suggestions.

Regards

Karthik Kumar

RE: Interface nRF21540 FEM with nRF5340 a new design.

KarthikKumar — Mon, 20 Dec 2021 09:58:23 GMT

Hi Martin,

Thank You for the suggestion.

Regards

Karthik Kumar

RE: Interface nRF21540 FEM with nRF5340 a new design.

Martin Sivertsen — Wed, 15 Dec 2021 19:44:58 GMT

Hi,

When you say nRF5340 development board, do you mean our development kit?

You have several providers of breakout boards with an IMU (Inertial Measurement Unit) with supporting circuitry, for example Adafruit and Sparkfun.

Just do a google search for IMU breakout board.

The nRF5340 should have no issue communicating with any of them.

That being said, if you are going to be programming with zephyr, I might suggest going for either ADXL345, ADXL362, ADXL372, BMA280, BMI270, LIS2DH or MPU9150.

Best regards,

Martin S

RE: Interface nRF21540 FEM with nRF5340 a new design.

KarthikKumar — Wed, 15 Dec 2021 13:17:49 GMT

Hi Martin,

Can you suggest me with some accelerometer, magnetometer, gyro meter sensors or combination of all three in a single sensor, that are configurable with nRF5340 development board.

Regards

Karthik Kumar

RE: Interface nRF21540 FEM with nRF5340 a new design.

Martin Sivertsen — Fri, 10 Dec 2021 07:26:53 GMT

You're welcome.

Best regards,

Martin S.

RE: Interface nRF21540 FEM with nRF5340 a new design.

KarthikKumar — Thu, 09 Dec 2021 15:02:02 GMT

Hi Martin,

Thank you for the response.

Regards

Karthik Kumar

RE: Interface nRF21540 FEM with nRF5340 a new design.

Martin Sivertsen — Thu, 09 Dec 2021 14:56:26 GMT

Hi,

Are you going to include them on the same PCB or are they on separate breakout boards?

Either way, most accelerometers and magnetometers usually communicate using I2C (Nordic uses TWI (Two-wire interface) which is the same thing) or SPI, and you can use any GPIO on the nRF5340 to set up this communication.

Best regards,

Martin S.

RE: Interface nRF21540 FEM with nRF5340 a new design.

KarthikKumar — Tue, 07 Dec 2021 14:06:13 GMT

Hi Martin,

I'm planning to connect an sensor to the nRF5340 chipset, which shall sense the motion and position of an object, that is an accelerometer and magnetometer sensors. How can I connect this?

Regards

Karthik Kumar

RE: Interface nRF21540 FEM with nRF5340 a new design.

Martin Sivertsen — Thu, 02 Dec 2021 11:10:20 GMT

Hello Karthik,

When you say you find it hard to configure, what do you mean specifically?

When you say connect both, do you mean in a schematic or on a PCB?

And when you say help to create a new design, what's the scope of this request?

We have an infocenter with product specification for all our chips as well as erratas, white papers etc.

Here is the specific page for nRF5340: https://infocenter.nordicsemi.com/topic/ps_nrf5340/keyfeatures_html5.html?cp=3_0_0

Here is a page with reference schematics for the two package types (QKAA and CLAA) of the nRF5340: https://infocenter.nordicsemi.com/topic/ps_nrf5340/chapters/ref_circuitry.html?cp=3_0_0_8_2

Here is PCB layout files for the nRF5340 you can copy (and please follow closely): https://www.nordicsemi.com/Products/nRF5340/Downloads#infotabs

Here is the product specification for nRF21540: https://infocenter.nordicsemi.com/topic/struct_fem/struct/nrf21540.html?cp=7_0

Here is the PCB layout files for the nRF21540, please copy exactly: https://www.nordicsemi.com/Products/nRF21540/Downloads#infotabs

Let us know how we can help.

Best regards,

Martin S.