How to connect ADXL362 accelerometer to nRF51 DK

RE: How to connect ADXL362 accelerometer to nRF51 DK

Francisco Martinez — Tue, 17 Jan 2017 19:35:57 GMT

Awneil, thank you very much for your comments. They have helped me a lot.

RE: How to connect ADXL362 accelerometer to nRF51 DK

awneil — Sat, 14 Jan 2017 13:00:40 GMT

I'm completely new to ... the SPI bus

See en.wikipedia.org/.../Serial_Peripheral_Interface_Bus for a good introdunction.

Also: learn.sparkfun.com/.../serial-peripheral-interface-spi

RE: How to connect ADXL362 accelerometer to nRF51 DK

awneil — Sat, 14 Jan 2017 12:55:03 GMT

The accelerometer's datasheet says that the I/O voltage for the device is 1.6 to 2.0 volts

No, it doesn't.

The current revision is E: www.analog.com/.../ADXL362.pdf

Table 1 on p 4 says the range is from 1.6V up to Vs; ie, the current supply voltage.

The same table tells you that the maximum supply voltage is 3.5V

RE: How to connect ADXL362 accelerometer to nRF51 DK

Francisco Martinez — Fri, 13 Jan 2017 19:30:13 GMT

Thank you very much, Sigurd.

RE: How to connect ADXL362 accelerometer to nRF51 DK

Sigurd — Fri, 13 Jan 2017 11:35:33 GMT

Hi,

The SPI master example is a good starting point. You can use any available GPIO pins on the DK, but the default pins used by the example are:

SCLK: Pin 1
MOSI: Pin 2
MISO: Pin 3
CS: Pin 4

You don't need any resistors, just connect it as shown in the figure you attached. The I/O voltage for the ADXL362 is actually 1.6 to Vs, where Vs is the operating voltage (from 1.6V to 3.5V).

Edit: You can find some drivers for the very similar ADXL375 here. It should be fairly easy to port the drivers to ADXL362.