Flash encryption and JSON files



  • Hello everyone.

    First of all, I've been looking for a while for a related topic but I couldn't find. So, I'm sorry if this is a duplicate topic.

    I could find a lot about the flash encryption, but I could not find if the application can write/modify a JSON file stored in the flash. I'll use BLE to change some configurations with the device in place and I need these changes to be permanent, so I chose the JSON file.

    My question: can an encrypted flash on a LoPy (dev board and/or OEM) board have a JSON file that can be modified over BLE? More specifically, is it possible to use something like this:

    with open('/flash/node_config.json','w') as fp:
        fp.write(json.dumps(self._cfg_file))
    

    Thanks for your support.


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