#include "ch32fun.h"
//#include <stdio.h>

int main(void)
{
    SystemInit();

    // Enable GPIOs
    RCC->APB2PCENR |= RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOC;

    // GPIO D0 Push-Pull
    GPIOD->CFGLR &= ~(0xf << (4 * 0));
    GPIOD->CFGLR |= (GPIO_Speed_10MHz | GPIO_CNF_OUT_PP) << (4 * 0);

    // GPIO D4 Push-Pull
    GPIOD->CFGLR &= ~(0xf << (4 * 4));
    GPIOD->CFGLR |= (GPIO_Speed_10MHz | GPIO_CNF_OUT_PP) << (4 * 4);

    // GPIO D6 Push-Pull
    GPIOD->CFGLR &= ~(0xf << (4 * 6));
    GPIOD->CFGLR |= (GPIO_Speed_10MHz | GPIO_CNF_OUT_PP) << (4 * 6);

    // GPIO C0 Push-Pull
    GPIOC->CFGLR &= ~(0xf << (4 * 0));
    GPIOC->CFGLR |= (GPIO_Speed_10MHz | GPIO_CNF_OUT_PP) << (4 * 0);

    while (1)
    {
        GPIOD->BSHR = (1 << 0) | (1 << 4) | (1 << 6); // Turn on GPIOs
        GPIOC->BSHR = (1 << 0);
        Delay_Ms(250);

        GPIOD->BSHR = (1 << 16) | (1 << (16 + 4)) | (1 << (16 + 6)); // Turn off GPIOs
        GPIOC->BSHR = (1 << 16);
        Delay_Ms(250);
    }
}