Create External Flash Partition for nRF5340 in Thingy:91x is failed

[Billy Wan]

I want to use the nRF5340 in Thingy:91x to control the external flash (256M bit) and pariition it as LittleFS. I can be sucessfully create partition in nRF5340DK but cancan achieve in Thingy:91x. I tried many ways to modify the pm_static.yml and thing91x_nrf5340 board overlay and cannot acheive it. I want some example so that I know how to create partitiion of the external flash for nRF5340 in Thingy:91x. Please help. Thanks.

[Amanda Hsieh]

Hi Billy, 

What NCS version are you using?

For v3.4.0, You can check out the thingy91x_nrf5340_cpuapp.overlay in https://github.com/nrfconnect/sdk-nrf/blob/v3.4.0/samples/wifi/shell:

https://github.com/nrfconnect/sdk-nrf/blob/v3.4.0/samples/wifi/shell/boards/thingy91x_nrf5340_cpuapp.overlay

https://github.com/nrfconnect/sdk-nrf/blob/v3.4.0/samples/wifi/shell/sysbuild/mcuboot/boards/thingy91x_nrf5340_cpuapp.overlay 

https://github.com/nrfconnect/sdk-nrf/blob/v3.4.0/samples/wifi/shell/sysbuild/b0/boards/thingy91x_nrf5340_cpuapp.overlay 

Regards,
Amanda H.

[Billy Wan]

Hi Amanda, thank you for your support. I had tried the examples you provided in V3.4.0. I can create a partition in external flash. However, I cannot using the partition in external flash as LittleFS partition. When I mount it as LittleFS partition, it always have <err> test: FAIL: unable to find flash area 0: -2 and <err> test: Mount LittleFS Error -2. Could you provide the example showing how to define LittleFS partition for external flash for nRF5340 in Thingy:91x by using Sysbuild in ncs V3.4.0. Thanks.