How to load chunks of program from an external SPI Memory to the internal RAM of the Microcontroller nRF52 series

[Claudio Ferraro]

How to load chunks of program from an external SPI Memory to the internal RAM of the Microcontroller nRF52 series ?

Is there somewhere an example of how to achieve this ?

What I can already do is to move (read/program) data from and to the SPI Memory but how to move executable code to the internal memory and execute it ?

I'm following this option since I heard that the nRF51 and nRF52 microcontrollers doesn't support Mapping of external memory and my application requires up to 50 Mbit of external data

[Jørgen Holmefjord]

Hi,

nRF52840 support Execute in place for the QSPI peripheral.

If you load the code into internal RAM/flash, you will need to branch to the locatin where the code to execute is placed. We do this in our DFU bootloader, you can have a look at the code to get an idea of how to do this.

Best regards,
Jørgen