ADXL372 integration with nrf51822

[tushar19]

I am trying to interface ADXL372 with nrf51822 using SPI interface.

Tried merging this code in SPI master example:

https://github.com/analogdevicesinc/arduino/blob/master/Arduino%20Uno%20R3/examples/ADXL372_example/ADXL372_example.ino

But I am not getting the required data.

Need help to get adxl372 working with SPI.

Below is the function I tried:

int spi_write_then_read(adxl_spi_handle *spiTransfer,
                               unsigned char *txbuf,
                               unsigned n_tx,
                               unsigned char *rxbuf,
                               unsigned n_rx)
{
  unsigned char count;
  int err = 0;
	uint32_t err_code;
	while(spi_master_get_state(SPI_MASTER_0) != SPI_MASTER_STATE_IDLE);
	err_code = spi_master_send_recv(SPI_MASTER_0, txbuf, n_tx, rxbuf,n_rx);
	APP_ERROR_CHECK(err_code);
	return err;
}

[awneil]

tushar19 said:

Below is the function I tried:

And what happens when you run that?

Are you sure that what you're sending is correct?

Have you looked on the SPI lines to see what's happening?

How to debug: https://www.avrfreaks.net/comment/2418156#comment-2418156

[tushar19]

Nothing happens and I get all axis = 0!

Yes, I think I need to first check if communication is happening or not.

Can you check the arduino code from here: https://github.com/analogdevicesinc/arduino/blob/master/Arduino%20Uno%20R3/examples/ADXL372_example/ADXL372_example.ino

and how can use the same but for NRF. I tried using above function but not yet successful!

[bjorn-spockeli]

HI Tushar, 

you will need to port the Arduino code to to use the SDK v12.3.0 SPI master driver.  

Best regards

Bjørn