C program to write and read from onboard spi eeprom.(i am using nrf52840).

[P_S]

Hello guys, i am trying to write a c code to read and write data to the onboard memory. i am using nrf52840 and segger embedded studio. i have used sio pins 41, 40, 04, 44 for SCK, MOSI, MISO and CS respectively. i have done the initial GPIO configurations for the pins and the SPI sonfigurations. could someone guide me how to proceed furthur for writing the data and reading the data or point me to a resource which might help, Thanks.

[ovrebekk]

Hi

You mean you want to access the 8MB Macronix flash device on the nRF52840 Devkit?

This device uses different pins than the ones you list, this is printed on the back of the DK. 

I had a similar case recently where I shared some code to access this device over SPI:
https://devzone.nordicsemi.com/f/nordic-q-a/50734/interface-external-flash-to-nrf52832

The code is available here:
DZ233955_ble_app_uart_v2.zip

And if this is not what you are trying to do just let me know, and I will do what I can to help

Best regards
Torbjørn