This repository contains a minimal example that toggles a GPIO pin on the ESP32-S3 to blink an LED. The code in blink.c uses the ESP-IDF API when compiled for the microcontroller and provides simple stubs so it can be compiled on a host machine for syntax checking.

• ESP32-S3 development board
• LED connected to GPIO8 (adjust BLINK_GPIO in blink.c if needed)

1. Install ESP-IDF and set up the environment.

2. Configure the target and build:

   idf.py set-target esp32s3
   idf.py build

3. Flash the firmware to your board and monitor serial output:

   idf.py -p /dev/ttyUSB0 flash monitor

The LED on GPIO8 will blink at a 1 Hz rate.

You can compile the example on a regular computer to verify that the code builds:

gcc -fsyntax-only blink.c

This uses stub functions in place of ESP-IDF's hardware drivers.