After beginning development on nRF9160 Feather, we have developed our own system using the nRF9160 and the nRF52840 and Zephyr/Nordic SDK. We are having a bear of a time getting the MX25R1635F external flash to work with our the QSPI driver. The strange thing is, with our same code, the MX25R6435F on the nRF52840-DK works just fine. Has anyone ran into this? Anything obvious we could be missing?
NCS version 2.0.0
Zephyr version 3.0