ULP-core interrupt handling

[leighleighleigh]

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Pull Request Details 📖

Description

Work-in-progress effort to add interrupt handling to the ULP cores, GPIO interrupt APIs, and GPIO wake-up.

• Adds optional interrupt-handling support to the ULP cores, using Interrupts exported form their PACs'
  • Increases code size, so must be enabled using the interrupts feature-flag for now.
  • Adds a ULP critical section implementation, when enabled.
• Add Io peripheral, allowing users to bind their own GPIO interrupt handlers
• Add interrupt methods to GPIO pin types
• Add support for GPIO/LPIO wake-up of ULP/LP cores
• Fix bug where Peripherals::take().unwrap() would panic upon the second loop into main() due to the ULP Timer

To-Dos

• Refactor the interrupt module, so it is easier to disable interrupts, to minimize the code size when unwanted
• Add interrupt support for ESP32-C6-LP
• Split-out the GPIO/LPIO wake-up feature into it's own PR, as it does not depend on interrupt support (AFAIK)
• Split-out the Peripherals::take().unwrap() bug fix into it's own PR, as it does not depend on interrupt support

Testing

Tested on ESP32-S3 & RISCV ULP. Additional testing being performed on ESP32-C6.

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[github-actions]

New commits in main has made this PR unmergable. Please resolve the conflicts.

[github-actions]

New commits in main has made this PR unmergable. Please resolve the conflicts.

[github-actions]

New commits in main have made this PR unmergeable. Please resolve the conflicts.