SPI in nrf51 dk

[rushin]

hello there ,I am writing spi code for slave which has 19 bytes of data. my nrf51 is master.

now my slave has clock polarity =1, clock phase =1. i am uploading project here. but my nrf51 is getting 0x00. can anyone tell me what is my mistake??uart - Copy.rar

[bjorn-spockeli]

You should use the SPI driver from the SDK(nrf_drv_spi.c) directly instead of using the ADXL375 driver which is on top of the SDK SPI driver.

Well, it send something, but the ADXL driver(which I made) is meant to be used to communicate with the ADXL375 where the byte sequence sent over SPI must follow a specific format, e.g. [Register address + R/W bit | DATA ...... ]. When youre communicating between two microcontrollers you do not need to specific any register addresses, the MCUs will just put the received data in a buffer and then its up to the user to interpret it.