wasp-bootloader: a robust SoftDevice bootloader for PineTime

[JF002]

Hi @danielt ,

I've finally some free-time, and I would like to test your wasp-bootloader, see how it works and maybe adapt my firmware to be compatible with OTA using wasp-bootloader.

I've managed to build and program the bootloader on my pinetime. Now, I would like to build an image I can send to program my firmware on my pinetime.

Could you give me some info on how to achieve this? How do you create the image? Is it just a zip file containing the HEX/BIN file?
And how do you program it? In your video, it seems you are using NRFConnect? Is there a desktop application that I can use to transfer the image?

EDIT : I found that one can create a DFU image using adafruit-nrfutil:

Code:

$ adafruit-nrfutil dfu genpkg --dev-type 0x0052 --application pinetime-app.hex dfu.zip

Then, this image can be sent to the pinetime running the booloader using NRFConnect (smartphone app).

So far so good, it works as long as the application uses the same BLE stack as the bootloader (which is the case of my firwmare).

Thanks!