#include <stdio.h>
#include "pico/stdlib.h"
#include "hardware/spi.h"
#include "hardware/dma.h"
#include "hardware/pio.h"
#include "hardware/timer.h"
#include "epd0.h"
#include "epd/epd_4p2mono.h"

/* Function Declarations */
static bool timer_callback(repeating_timer_t *timer);

/* Function Definitions */
static inline void spi_cs_assert()
{
    gpio_put(EPD0_PIN_CS, 0);
}
static inline void spi_cs_deassert()
{
    gpio_put(EPD0_PIN_CS, 1);
}
static inline void spi_write_byte(uint8_t b)
{
    spi_cs_assert();
    spi_write_blocking(EPD0_SPI_PORT, &b, 1);
    spi_cs_deassert();
}
static inline void spi_read_busy()
{
    do
    {
        spi_write_byte(0x71);
    }
    while (gpio_get(EPD0_PIN_BUSY));
}

int main()
{
    repeating_timer_t timer;

    stdio_init_all();

    epd0_init();
    epd_4p2mono_init(&epd0);
    epd_4p2mono_clear(&epd0);
    epd_4p2mono_testpattern(&epd0);
    epd_4p2mono_testimg(&epd0);

    // Timer example code - This example fires off the callback after 2000ms
    add_repeating_timer_ms(2000, timer_callback, NULL, &timer);

    for(;;);

    return 0;
}

static bool timer_callback(repeating_timer_t *timer)
{
    // Put your timeout handler code in here
    puts("Hello, world!");

    return true;
}