Rework TI EasyLink

[josesimoes]

Description

• Move init, tx, rx and abort code to a separate thread.
• Rework remaining code accordingly.

Motivation and Context

• After upgrading to the latest CC13x2_26x2 SDK version the radio operations, including boot have become unstable and occasionally even lock the execution on EasyLink initialization.
• Remedy was to move all radio operations to it's own RTOS task.

How Has This Been Tested?

• TI EasyLink samples.

Screenshots

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)
• Config and build (change in the configuration and build system, has no impact on code or features)
• Dependencies (update dependencies and changes associated, has no impact on code or features)

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.

[nfbot]

Hi @josesimoes,

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

A human will be reviewing it shortly. 😉