Do you mean you want to use SPI slave in the nRF device, and SPI master on your bootloader client?
Which SDK and chip are you planning to use?
We don't have official support for this unfortunately, but I know one of my colleagues provided an un-official library showing how to set up an SPI slave bootloader some time ago. He is not available this week, but I can check with him next week what the status of this project is, and if it will work with the latest SDK.
According to the requirements of the system Q-CORE will use or the nRF52810 (because it has a PDM) or nRF52840 (if I2S is needed I2S is must to have code reuse from existing implementation.).
The main CPU the old system uses is ST STM32 family and it should be the one to burn the nRF they will use through SPI bus (nRF should be defined as slave).
We don't have an official example for DFU via SPI. However I have made an SPI bootloader example here that you can have a look. Note that the example is only a Proof of Concept, there haven't been any production test on the example.
We don't have an official example for DFU via SPI. However I have made an SPI bootloader example here that you can have a look. Note that the example is only a Proof of Concept, there haven't been any production test on the example.
