Add board support for Seeed XIAO ESP32C6

[LynnL4]

FYI
espressif/arduino-esp32#9330
https://wiki.seeedstudio.com/XIAO_ESP32C6_Getting_Started/

[lboue]

Could you validate this request?

[mnowak32]

Kinda confirmed - I've got it to work in PIO/VSC with following measures:

• forked @LynnL4 repo and merged newest changes from upstream,
• added the newest (as for now) version (3.0.2) of arduino-esp32 framework to platformio.ini - without this change there were errors regarding missing SConscript:

[env:seeed_xiao_esp32c6]
platform = https://github.com/mnowak32/platform-espressif32.git#boards/seeed_xiao_esp32c6
platform_packages = 
	framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32.git#3.0.2
	framework-arduinoespressif32-libs @ https://github.com/espressif/arduino-esp32/releases/download/3.0.2/esp32-arduino-libs-3.0.2.zip
framework = arduino
board = seeed_xiao_esp32c6

The project I've used depends on libs like mmwave_for_XIAO, EspSoftwareSerial and NeoPixelBus, all working flawlessly.

[LynnL4]

Hi，Could someone please help merge this PR? If there are any modifications or clarifications needed, please let me know. I look forward to moving this forward. Thank you!

[valeros]

Hi @LynnL4, thanks for the PR. This board requires Arduino core v3.0 which is not officially supported yet.

[Linjieqiang]

When will be merged it?

[vladkozlov69]

Just tested it with some libs

	https://github.com/alanswx/ESPAsyncWiFiManager.git
	knolleary/PubSubClient@^2.8
	mathieucarbou/Async TCP @ ^3.1.4
  	mathieucarbou/ESPAsyncWebServer @ ^3.1.1
	ayushsharma82/ElegantOTA@^3.1.1

Works as expected

[bitflippersanonymous]

I've tested this merge, and it works with and standalone platformio project and with espHome once updated.
I did need to change to a newer toolchain to resolve GCC version issues.

platform = https://github.com/bitflippersanonymous/platform-espressif32
platform_packages =
pioarduino/framework-espidf@https://github.com/pioarduino/esp-idf/releases/download/v5.3.2/esp-idf-v5.3.2.zip
platformio/toolchain-riscv32-esp@13.2.0+20240530

espHome
init.py:
RECOMMENDED_ESP_IDF_FRAMEWORK_VERSION = cv.Version(5, 3, 2)
ESP_IDF_PLATFORM_VERSION = cv.Version(53, 3, 10)

boards.py:
"seeed_xiao_esp32c6": {
"name": "Seeed Studio XIAO ESP32c6",
"variant": VARIANT_ESP32C6,
},

foo.yml
esp32:
board: seeed_xiao_esp32c6
framework:
type: esp-idf
platform_version: https://github.com/bitflippersanonymous/platform-espressif32