RE: nrf52840 as SPI slave not receiving data

AjayH — Thu, 27 Feb 2020 08:54:48 GMT

Hi Simon,

The CS was the issue at the STM end, as it wasn't configured properly. However, the same case was in the dk but I was receiving correct values then. So I just assumed configurations are fine and checked for the data transmission. Now I have configured the STM controller properly, and able to receive data on the custom board.

Thanks for the support.

RE: nrf52840 as SPI slave not receiving data

Simon — Mon, 24 Feb 2020 14:14:52 GMT

Have you checked the logic value of CSN (chip select) throughout the transmission? Could you check if any other peripherals are using any of the SPIS pins?

Have you checked out these cases?

https://devzone.nordicsemi.com/f/nordic-q-a/23005/programming-nrf52840-on-custom-board
https://devzone.nordicsemi.com/f/nordic-q-a/39670/can-t-read-or-write-spis-data-on-nrf52-gpio
https://devzone.nordicsemi.com/f/nordic-q-a/18173/spis-endrx-event-not-working

Best regards,

Simon