SPI Library

RE: SPI Library

Harsha — Fri, 13 Jan 2017 07:27:25 GMT

Hi Francisco, Yes I could now read the ADXL362. My VDD is 2.1v so I am not using any logic level shifting. But Even when the VDD is 3.3v you may not require level shifting. What problem are you facing exactly?.

RE: SPI Library

Francisco Martinez — Thu, 12 Jan 2017 20:05:09 GMT

Harsha,

Did you manage to read from the ADXL362 sensor? I have a similar question and would like to know how you wired the sensor to the chip. Specifically, did you need logic-level shifting or pull-up/pull-down resistors?

RE: SPI Library

bjorn-spockeli — Wed, 13 Jul 2016 12:28:55 GMT

Ok, as long as you initialize the driver according to the documentation, then to read the XYZ-data registers you would have to do something like this:

uint32_t err_code;

uint8_t tx_buffer[8] = {0x0B, 0x0E, 0 , 0 , 0 , 0 , 0 , 0};
uint8_t rx_buffer[8];

err_code = nrf_drv_spi_transfer(&m_spi_master_0, tx_buffer, sizeof(tx_buffer), rx_buffer, sizeof(rx_buffer));

RE: SPI Library

Harsha — Wed, 13 Jul 2016 09:15:49 GMT

Thanks. I am trying to read ADXL362 from Analog Devices. Low Power MEMS.

RE: SPI Library

bjorn-spockeli — Wed, 13 Jul 2016 09:13:06 GMT

I am afraid that the SPI driver is not going to be as easy to use as the pseudocode in your question, but its not that hard to use. I recommend taking a look at the driver documentation on our Infocenter, found here. It contains a couple of code snippets showing how to use the driver.

BTW: Which sensor are you trying to read from?