nRF52810 boot loader over UART from external mcu

[Darrenaw]

Hello,

Currently using a custom board that has the nRF52810 onboard along side an ESP32. I am wanting to update the firmware for the nrf chip from the ESP32 over UART. The idea is the ESP32 will make a GET request and transfer the firmware over.

I am aware of the DFU examples provided and so and do not think there is one for UART and between two micros. I am thinking of implementing a custom boot loader. Is my thinking correct on the matter to go about this by creating a child image and having the boot loader on there? If so I don’t particularly understand the documentation around a multi image build or how to go about implementation.

Currently as well I am using the Bluetooth EnOcean example for the PTM switches.

Is this the right way forward for this application?

Thanks

[Menon]

Hello,

I recommend customising the available bootloader depending on your use case. Creating a custom bootloader from scratch might require a lot of work, and I won't be able to provide much support on this.

Take a look at this old devzone discussion, which will give you some insights.

Kind Regards,

Abhijith