Add support for SeeedStudio's XIAO ESP32-S3 Wio-SX1262 Header

[Brandon-T]

Fixed: #8409

🤝 Attestations

• I have tested that my proposed changes behave as described.
• I have tested that my proposed changes do not cause any obvious regressions on the following devices:
  • Heltec (Lora32) V3
  • LilyGo T-Deck
  • LilyGo T-Beam
  • RAK WisBlock 4631
  • Seeed Studio T-1000E tracker card
  • Other (please specify below)

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[NomDeTom]

I would suggest removing the ASCII artwork. It's cute when the OEM does it. It's annoying if it's everywhere.

[Brandon-T]

Fixed. Also changed to -D PRIVATE_HW

Compiled with ~/.platformio/penv/bin/pio run -e seeed-xiao-s3-diy-header which created ~/Desktop/mestastic_firmware/.pio/build/seeed-xiao-s3-diy-header/firmware.factory.bin

Flashed with: ~/.platformio/penv/bin/pio run -e seeed-xiao-s3-diy-header -t upload

and tested. Also tried it with Visual Studio Code to build and flash as well, just in case.

[NomDeTom]

This looks good, and it's good that you've tested it. Putting it in DIY as a separate variant is the right thing to do.

@fifieldt does this need to be private_hw or continue under the HWID for the xiao S3?

[Sabering1]

any updates?

[NomDeTom]

You will need to update the GPS pin definitions in line with #8772

Also, you have overlapping I2C pin definitions with the radio pins. I suggest omitting them, or pushing them to unused internal pins, or putting them on the BTB header.