# GPIO Example

## Overview

This sample is a GPIO HAL regression test.

Source file:

```bash
src/rtsmart/examples/peripheral/gpio/test_gpio.c
```

## Sample Behavior

- pin mapping
- instance creation and destruction
- mode switching
- level read and write
- toggle behavior
- IRQ registration

## Key APIs

- `drv_fpioa_set_pin_func()`
- `drv_gpio_inst_create()` / `drv_gpio_inst_destroy()`
- `drv_gpio_mode_set()` / `drv_gpio_mode_get()`
- `drv_gpio_value_set()` / `drv_gpio_value_get()` / `drv_gpio_toggle()`
- `drv_gpio_register_irq()` / `drv_gpio_unregister_irq()`

## Build and Run

```bash
cd src/rtsmart/examples/peripheral/gpio
make
./test_gpio
```