interfacing adxl362 accelerometer with ANNA-B112 ublox evaluation board (nrf52832) ,receive_buffer returns only 0xff on every spi_read

RE: interfacing adxl362 accelerometer with ANNA-B112 ublox evaluation board (nrf52832) ,receive_buffer returns only 0xff on every spi_read

haakonsh — Fri, 24 Apr 2020 08:14:26 GMT

Do you have a digital analyzer scope of the communication?

RE: interfacing adxl362 accelerometer with ANNA-B112 ublox evaluation board (nrf52832) ,receive_buffer returns only 0xff on every spi_read

Reshma Tomy — Fri, 24 Apr 2020 08:07:05 GMT

hi haakonsh,

I made the changes you mentioned above, but still, it's not working.

RE: interfacing adxl362 accelerometer with ANNA-B112 ublox evaluation board (nrf52832) ,receive_buffer returns only 0xff on every spi_read

haakonsh — Fri, 24 Apr 2020 07:58:48 GMT

From the adxl362 datasheet:
The recommended SPI clock speeds are 1 MHz to 8 MHz, with 12 pF maximum loading.

Also, try setting m_tx_buf[2] =0xFF;
I have a vague memory of the adxl262 wanting an Over Read Character of 0xFF instead of 0x00, even though the documentation states that either is acceptable.