I would like to integrate a particle cellular module into my device to make it cellular capable. The firmware for my product has been under development for over 9 months so porting the code over to make it work on the Particle OS isn’t really an option. I currently have bootloader firmware on my product that communicates with the device master via UART to receive the binary file.
What I need to do is have the ability to send a binary file down to my Particle device and store it locally on that device. From there I would update my local device.
My ideas on how to do this so far:
- Store the file on the web somewhere and download it to the local flash of the Particle device.
- Splice the binary file into the Particle’s binary file at a flash offset and then OTA update my Particle device thus downloading the new file into local flash memory.
In both these situations I would then queue my device into bootloader mode and start the update from Particle’s flash memory.
Has anyone ever done anything like this? Or have any suggestions on how to do this? I’m not sure if it helps, but I am using a STM32G series chip.
Any help is greatly appreciated.