The ESP-IDF compile path stages exactly the libraries declared in the
example (no transitive resolution), so Adafruit_GFX.h failing to find
Adafruit_I2CDevice.h broke esp32s3-ili9341-hello and esp32-oled-4pin-i2c
with 'Compilation produced no firmware'. The other ESP32 GFX examples
(esp32-oled, esp32-bmp280) already declare BusIO explicitly.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Hardware-SPI (FSPI/GPSPI2) ILI9341 draw from an ESP32-S3: fill + rounded
rect + text via Adafruit_GFX/ILI9341. Exercises the S3 GPSPI2 controller
end to end (worker SPI stream + DC/CS/RST -> the canvas TFT decoder).
David Montero Crespo