5340 hwo to DFU external Flash

[yoyou]

Hello,

NRF5340,  NCS2.0.2,  VScode

I designed a headset，MCU is 5340, and a external flash for DSP program.

the external flash connect to DSP and 5340 use SPI;

i can DFU 5340MCU self,

how to  DFU external Flash for DSP program?

App_dfu.zip update to 5340 self,   DSP_dfu.zip update to external falsh.

is there any demo?

                          

Best regards

[AHaug]

Hi,

Unfortunately we don't have any demos or guides for how to do this for a DSP. However it is possible to do the DFU for the DSP as well, but you will need to implement what you need yourself. One starting point is to add the update bin/hex to a part of the flash that the DSP can access, and then perform the DFU from there

Kind regards,
Andreas

[yoyou]

Hi,

thanks for reply,

i think,

modify bootloader code to judge the download hex is App or external Flash for DSP.

if App, do update self;

if for DSP, write to external Flash only;

but i don't know how to find the code in NCS2.0.2.

   

Best regards