is it possible to Flash firmware in nrf51422 from another MCU over UART interface?

RE: is it possible to Flash firmware in nrf51422 from another MCU over UART interface?

Hung Bui — Fri, 12 Jan 2018 13:40:15 GMT

@Pranay: We don't have example of using an MCU to act as DFU Master yet. You may need to implement that on your own. The protocol is available on our info center here.

This is one example of SPI DFU update for SDK v8.0, the DFU master is included.

RE: is it possible to Flash firmware in nrf51422 from another MCU over UART interface?

Pranay — Fri, 12 Jan 2018 10:01:48 GMT

I am using nRF5_SDK_11.0.0. The examples on serial bootloader in SDK uses ZIP files and python script (nrfutil) to flash firmware over uart

RE: is it possible to Flash firmware in nrf51422 from another MCU over UART interface?

endnode — Fri, 12 Jan 2018 08:10:25 GMT

Ever heard about Nordic Infocenter? Here is part with bootloader examples, there should be all you need.

RE: is it possible to Flash firmware in nrf51422 from another MCU over UART interface?

endnode — Fri, 12 Jan 2018 08:09:11 GMT

That depends on where you got the bootloader;) The generic one from Nordic nRF5 SDK? Which exact version and source code files you use?

RE: is it possible to Flash firmware in nrf51422 from another MCU over UART interface?

Pranay — Fri, 12 Jan 2018 08:06:52 GMT

Thanks @endnode, and yes I was seeking for the more details, where can i get the details about Nrf51's booatloading protocol, to initiate update from another MCU (may be ESP8266)

RE: is it possible to Flash firmware in nrf51422 from another MCU over UART interface?

endnode — Fri, 12 Jan 2018 07:33:19 GMT

So is your question just "Is it possible to flash firmware to nRF5x chips from another MCu over UART?" - which obvious answer is YES - or you are asking "will someone do this for me"? If you have serial bootloader which supports UART then you should just use the bootloading protocol to start the procedure, transport the binary and kick start the actual FW swap.