Nrf5340 and W25Q128JV Nor Flash R/W problem?

[erifat]

Hello,

We are trying to use nrf5340 and W25Q128JV (https://www.winbond.com/resource-files/W25Q128JV%20RevI%2008232021%20Plus.pdf) nor flash on our own designed card. I am checking the flash operation via spi_flash example. 

I made changes to the DTS file. (jedec-id = [ef 40 18]; size = <134217728>;) 

When reading flash, FF is displayed and I can't write data to flash. Can you support me? 

Thanks

[erifat]

Hello, the problem continues, the flash cannot be accessed when the jedec-id is incorrectly defined. when the jedec-id is defined correctly, I get the ff value. 

by the way, I observe that the same problem persists when I Decouple the flash located on the nrf5340dk and connect the W25Q128JV flash. The problem is software. How can I solve the problem