Update of ESP32 to IDF 3.3 (LTS)

[AdrianSoundy]

Description

This updates the ESP32 build to use the IDF 3.3 LTS (Long Term Support release) which is the latest stable release.

See https://github.com/espressif/esp-idf/releases/tag/v3.3 for details on changes
Lots of fixes and changes.

This release also includes a new set of compiled libraries. These Libraries enable the PSRAM which is enabled if PSRAM is present. There has been some talk about the reliability of the PSRAM on ESP32.

With this release the PSRAM will be used for managed heap if available. We will probably need to change this so it is optional via a build parameter. Also we may look at having a separate build which runs with a single ESP32 core which is said to be reliable with PSRAM. To be done in separate PR.

If building your own firmware the paths to the IDF & Libs have been changed.

This version doesn't fix the SmartConfig. This is a know problem and has been promised for next revision 3.3.1. Already fixed in release 3.1.6

How Has This Been Tested?

Some testing has been done but much more is required

Types of changes

• Improvement (non-breaking change that improves a feature, code or algorithm)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.

Signed-off-by: adriansoundy [email protected]

[nfbot]

Hi @AdrianSoundy,

I'm nanoFramework bot.
Thank you for your contribution!

A human will be reviewing it shortly. 😉

[josesimoes]

LGTM