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Deprecate SPIFFS, move examples to LittleFS (#7263)

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* 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>
This commit is contained in:
Earle F. Philhower, III
2020-05-04 11:22:50 -07:00
committed by GitHub
parent 9845deb283
commit 83166f948b
40 changed files with 176 additions and 164 deletions
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doc/ota_updates/readme.rst
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@ -360,7 +360,7 @@ If this is the case, then most likely ESP module has not been reset after initia
The most common causes of OTA failure are as follows:
- not enough physical memory on the chip (e.g. ESP01 with 512K flash memory is not enough for OTA).
- too much memory declared for SPIFFS so new sketch will not fit between existing sketch and SPIFFS – see `Update process - memory view <#update-process-memory-view>`__.
- too much memory declared for the filesystem so new sketch will not fit between existing sketch and the filesystem – see `Update process - memory view <#update-process-memory-view>`__.
- too little memory declared in Arduino IDE for your selected board (i.e. less than physical size).
- not resetting the ESP module after initial upload using serial port.