#include "resets.h"
#include "gpio.h"
#include "uart.h"
#include "stdio.h"

#define KEY_PIN (24)
#define LED_PIN (25)

int main(void)
{
    reset_unreset_blocks_wait(RESETS_BLOCK_IO_BANK0 | RESETS_BLOCK_UART0);
    gpio_init(0, GPIO_FUNC_UART | GPIO_PULL_UP | GPIO_DRIVE_4MA); /* UART_TX pin */
    gpio_init(1, GPIO_FUNC_UART | GPIO_PULL_UP | GPIO_SCHMITT | GPIO_PAD_IE | GPIO_PAD_OD); /* UART_RX pin */
    uart_init(uart0_hw, 6 * 1000 * 1000, UART_DATABITS_8 | UART_PARITY_NONE | UART_STOPBITS_1);
    printf("gpio_key example\r\n");

    gpio_init(LED_PIN, GPIO_FUNC_NULL | GPIO_OVER_OUT_HIGH | GPIO_OVER_OE_ENABLE | GPIO_PULL_UP | GPIO_DRIVE_4MA); /* LED pin */
    gpio_init(KEY_PIN, GPIO_FUNC_NULL | GPIO_PULL_UP | GPIO_SCHMITT | GPIO_PAD_IE | GPIO_PAD_OD); /* KEY pin */

    while (1) {
        if (gpio_read(KEY_PIN)) {
            /* read pin status as 1: release key  */
            gpio_clear(LED_PIN); /* low level for turn off LED */
        } else {
            /* read pin status as 0: press key  */
            gpio_set(LED_PIN); /* high level for turn on LED */
        }
    }

    return 0;
}