esp32c3: add support for this chip

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This change adds support for the ESP32-C3, a new chip from Espressif. It
is a RISC-V core so porting was comparatively easy.

Most peripherals are shared with the (original) ESP32 chip, but with
subtle differences. Also, the SVD file I've used gives some
peripherals/registers a different name which makes sharing code harder.
Eventually, when an official SVD file for the ESP32 is released, I
expect that a lot of code can be shared between the two chips.

More information: https://www.espressif.com/en/products/socs/esp32-c3

TODO:
  - stack scheduler
  - interrupts
  - most peripherals (SPI, I2C, PWM, etc)

...

This commit is contained in:

Ayke van Laethem

2021-09-04 00:55:35 +02:00

committed by Ron Evans

parent c830f878c6

commit cb147b9475

12 changed files with 660 additions and 70 deletions

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lib/cmsis-svd

+1 -1

Submodule lib/cmsis-svd updated: 9c35b6d9df...df75ff974c