FGPIO Driver

This section describes the programming interface of the FGPIO driver. The FGPIO driver configures the FGPIO module and provides a functional interface to build the GPIO application.

Note

FGPIO (Fast GPIO) is only available in a few MCUs. FGPIO and GPIO share the same peripheral but use different registers. FGPIO is closer to the core than the regular GPIO and it's faster to read and write.

Typical use case

Output Operation

/* Output pin configuration */
gpio_pin_config_t led_config =
{
    kGpioDigitalOutput,
    1,
};
/*  Sets the configuration */
FGPIO_PinInit(FGPIO_LED, LED_PINNUM, &led_config);

Input Operation

/*  Input pin configuration */
PORT_SetPinInterruptConfig(BOARD_SW2_PORT, BOARD_SW2_FGPIO_PIN, kPORT_InterruptFallingEdge);
NVIC_EnableIRQ(BOARD_SW2_IRQ);
gpio_pin_config_t sw1_config =
{
    kGpioDigitalInput,
    0,
};
/* Sets the input pin configuration */
FGPIO_PinInit(FGPIO_SW1, SW1_PINNUM, &sw1_config);