#include "reset.h"
#include "clock.h"
#include "sio.h"
#include "gpio.h"
#include "uart.h"
#include "stdio.h"
#include "RP2040.h"

struct gpio_cfg_s gpio_led_cfg = {
    .pin = 25,
    .sio_dir = GPIO_SIO_DIR_OUT,
    .funcsel = GPIO_FUNC_SIO,
    .over_out = GPIO_OVER_OUT_PERIPHERAL,
    .over_oe = GPIO_OVER_OE_PERIPHERAL,
    .over_in = GPIO_OVER_IN_PERIPHERAL,
    .over_irq = GPIO_OVER_IRQ_NORMAL,
    .slew_rate = GPIO_PADS_SLEW_RATE_SLOW, /* slew rate control, slow or fast */
    .schmitt = ENABLE,                     /* enable or disable schmitt */
    .pull_down = DISABLE,                  /* enable or disable pull down */
    .pull_up = DISABLE,                    /* enable or disable pull up */
    .drive = GPIO_PADS_DRIVE_STRENGTH_4MA, /* drive strength */
    .ie = DISABLE,                         /* enable or disable input */
    .od = DISABLE,                         /* output disable, has priority over output enable from peripherals */
};

struct uart_cfg_s uart_cfg = {
    .baudrate = 6 * 1000 * 1000,
    .mode = UART_MODE_TX_RX,
    .data_bits = UART_DATABITS_8,
    .parity = UART_PARITY_NONE,
    .stop_bits = UART_STOPBITS_1,
    .fifo_enable = ENABLE,
    .tx_fifo_level = UART_FIFO_LEVEL_1_2,
    .rx_fifo_level = UART_FIFO_LEVEL_1_2,
};

extern volatile uint32_t tick_1ms;

void isr_uart0(void)
{
    uint32_t status = uart_int_get_mask_status(UART_ID_0);
    printf("sts = 0x%08lX\t\n", status);
}

int main(void)
{
    reset_enable(RESET_IO_BANK0 | RESET_PADS_BANK0 | RESET_UART0);
    reset_disable(RESET_IO_BANK0 | RESET_PADS_BANK0 | RESET_UART0);
    gpio_init(&gpio_led_cfg);
    gpio_init_simple(0, GPIO_FUNC_UART, DISABLE, ENABLE);

    __enable_irq();

    while (!reset_get_state(RESET_UART0));
    uart_init(UART_ID_0, &uart_cfg);
    uart_int_enable(UART_ID_0, UART_INT_ALL);
    // NVIC_EnableIRQ(UART0_IRQ_IRQn);

    while (1) {
        static uint32_t tick_led = 0;

        if (tick_1ms > (tick_led + 500)) {
            tick_led = tick_1ms;
            gpio_toggle(gpio_led_cfg.pin);
            printf("tick_led = %ld\r\n", tick_led);
        }
    }

    return 0;
}