Interfacing nRF52840 with ADXL335 Accelerometer.

RE: Interfacing nRF52840 with ADXL335 Accelerometer.

awneil — Wed, 13 Mar 2019 11:34:39 GMT

Note also the 'Related' topics which the Forum helpfully finds for you:

RE: Interfacing nRF52840 with ADXL335 Accelerometer.

awneil — Wed, 13 Mar 2019 11:32:11 GMT

Have you looked at all?

See: https://devzone.nordicsemi.com/f/nordic-q-a/44588/nrf52-as-twi-slave/174992#174992

RE: Interfacing nRF52840 with ADXL335 Accelerometer.

Abhimanyu K K — Wed, 13 Mar 2019 11:27:07 GMT

How to configure ADC?

Is there any example programs which read analogue values and print on uart or ble?

RE: Interfacing nRF52840 with ADXL335 Accelerometer.

awneil — Wed, 13 Mar 2019 08:51:43 GMT

nrf_gpio_pin_read() is just a digital read: ie, it just tells you whether the pin is at a logic low or high level - '0' or '1'; true or false ...

If you want to read an analogue value, you need to use an Analogue-to-Digital Converter (ADC).

RE: Interfacing nRF52840 with ADXL335 Accelerometer.

Abhimanyu K K — Wed, 13 Mar 2019 04:40:43 GMT

Sir can we read the sensor values directly using nrf_gpio_pin_read()?

Or whether I need to configure ADC?

RE: Interfacing nRF52840 with ADXL335 Accelerometer.

awneil — Tue, 12 Mar 2019 13:36:01 GMT

[quote userid="76683" url="~/f/nordic-q-a/44718/interfacing-nrf52840-with-adxl335-accelerometer"]Which program and SDK I want to use for this?[/quote]

If you go to the Product Page for the nRF52840 it has links to the appropriate SDK, SoftDevices, etc ...

https://www.nordicsemi.com/Products/Low-power-short-range-wireless/nRF52840

[quote userid="73165" url="~/f/nordic-q-a/44718/interfacing-nrf52840-with-adxl335-accelerometer/175665"]You can read the output from the accelerometer by using GPIO as input[/quote]

Specifically, you will need to use the AIN analogue inputs, and the Analogue-to-Digital converter.

See the nRF52840 Product Specification for details, and look at the Examples in the SDK

RE: Interfacing nRF52840 with ADXL335 Accelerometer.

Jared — Tue, 12 Mar 2019 13:00:39 GMT

Hi,

The BLE app uart example would be a good starting point. You can read the output from the accelerometer by using GPIO as input. The values can then be sent using ble_nus_data_send().

Best regards

Jared