add more complex examples (#1)

README.md

@@ -1,9 +1,24 @@
-# ESP32-C3 Lua evaluation example
+# ESP32 Lua Evaluation Example
 
-## Build
+This example demonstrates how to use Lua 5.4 on ESP32, leveraging the LittleFS filesystem to run Lua scripts from external files. It also showcases Wi-Fi scanning and embedded Lua scripts.
 
-```shell
-idf.py set-target esp32c3
+## Prerequisites
+
+- ESP-IDF version 5.1.0 or higher
+- Components:
+  - [Lua 5.4](https://components.espressif.com/components/georgik/lua/)
+  - [LittleFS 1.14](https://components.espressif.com/components/joltwallet/littlefs/)
+
+## File Structure
+
+- `main.c`: Main program containing embedded Lua script and file-based Lua execution.
+- `assets/`: Directory containing Lua scripts for QR code generation and Fibonacci computation.
+  - `qr_code.lua`
+  - `fibonacci.lua`
+
+## Build and Flash
+
+```bash
+idf.py set-target esp32  # Replace esp32 with your specific target, e.g., esp32c3
 idf.py build flash monitor
 ```
-