Flashing WiFi and IoT Hub details.

[djaus2]

Have created a Sketch, as on GitHub, that can connect to WiFi in a variety of ways. Included is the ability to store details in flash (using simulated EEProm library) and read them back. Thus facilitating "headless"device model.

Also included in Azure IiT Hub Device Connection String write and read.

Connect2WiFi

https://github.com/djaus2/Connect2WiFi

[djaus2]

Have refactored code using namespace to simplify reuse .

[earlephilhower]

Nice work. A couple notes you should feel very free to ignore... 😆

Maybe instead of a namespace a class (and Arduino library) would be in order? Like the HTTPUpdate library/class here, for example.

Also, maybe using a File instead of EEPROM to store the config would be in order? EEPROM really is legacy and emulated to boot (so all writes hit the exact same flash spot) and you lose everything if the Pico powers down at the wrong time. With LittleFS you would get power failure protection and wear leveling. Using FatFS in 4K mode you would get something you could plug into a PC and edit/copy a config.txt file to update.

[djaus2]

Thanks for the feedback. Will look into that implementation.

Wrt flash wearout: I would expect though that these seeting would typically only be written once.

I do see how the FS approach would simploify updates.

[djaus2]

I have also created a separate repository OTALedFlash that iwa included in the Softa-ata repository. This has been discussed previously.

[djaus2]

The Connect2WiFi code has been updated to change delimeter to a a pipe and to add 2 more stored entities (5 in total). And is more easily extended to add more stored entities.