nRf52840 and an external SPI flash winbond W25Q128

[Pav-ru]

Hi,
I am using nRf52840 and an external winbond flash W25Q128.
When accessing the flash, nRF does not find it and starts to reboot.
What am I doing wrong?
Help me please.

[Kenneth]

What error code does nrfx_qspi_init() return?

Have you tried looking at the legacy layer instead?
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/qspi_example.html

If you want to use the nrfx api directly you need to check out:
https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/nrfx_migration_user_guide.html

[Pav-ru]

Hi Kenneth,

Thanks for your reply.
nrfx_qspi_init( returns NULL.Then the reboot begins.
https://yadi.sk/i/A3SGqHtiB2i-7w

I will look at your links and come back.

[Pav-ru]

Hi Kenneth,

Could you optimize the code?
I have a working prototype of a device on nRF 52840.
The test version of the firmware needs optimization.
The device works, but there are clearly flaws in the firmware code.
Can you help me?