* Deprecate SPIFFS, move examples to LittleFS
SPIFFS has been a great filesystem, but it has significant problems in
many cases (and it's also pretty slow). Development seems to have
slowed/stopped on the upstream version, and we're not able to provide
support or fix the known issues with it as-is.
Deprecate SPIFFS variable.
Update all examples to use LittleFS instead of SPIFFS.
Also, minor cleanup on very old examples which has obsolete delays
waiting for the Serial port to come up, or which were stuck at 9600 baud
because of their ancient AVR heritage.
Fixes#7095
* Remove leftover debug code
* Clean up comments in some examples
* Update documentation on SPIFFS deprecation
* Fix host tests to avoid deprecation warnings
* Fix cut-n-paste error
* Restore SpeedTest.ino, adjust to allow custom FSes
Co-authored-by: Develo <deveyes@gmail.com>
Replaces abandoned #1817 and #2694
Add optional std::function callback (so it supports lambdas and normal
functions) via ::onStart, ::onEnd, ::onProgress, and ::onError methods.
Update example with their use.
From @baruch's original pull request:
The callback is called when the upgrade actually starts rather than just
the initial query so that the user can know that it will not take longer
and can also prepare for the upgrade by shutting down other works.
From @karlp's original pull request:
Incomplete: I've not updated any documentation yet. If this style looks
good, I'll happily go and update the documentation (likewise for the
examples)
Make HTTPClient take a WiFiClient parameter, allowing you to pass in a
simple HTTP WiFiClient or a BearSSL or axTLS WiFiClientSecure with
any desired verification options. Deprecate the older, TLSTraits methods.
Add basic HttpsClient example.
Add optional LED feedback to the Update class
