#include <stdint.h>
#include "stm32c011xx.h"

void sysclk_init(void);
void blinky_init(void);
void timer_init(void);
void mco_init(void);
void pin8_PC15(void);
void pin1_PC14(void);
void pin4_PF2(void);

int main(void)
{


	sysclk_init();

	mco_init();



}

void sysclk_init(void){

	RCC->APBENR2 |= (1U<<0);//SYSCFG CLOCK

	pin8_PC15();
	pin1_PC14();
	RCC->IOPENR |= (1U<<2);

	//GPIOC->MODER |= (1U<<31);
	//GPIOC->MODER &=~(1U<<30);

	//GPIOC->AFR[1] &=~(1U<<31);
	//GPIOC->AFR[1] &=~(1U<<30);
	//GPIOC->AFR[1] &=~(1U<<29);
	//GPIOC->AFR[1] |= (1U<<28);

	RCC->CR &= ~(1U<<8);

	RCC->CR |= (1U<<16);

	RCC->CR |= (1U<<18);

	while(!(RCC->CR & (1U<<17))){}

	RCC->CFGR &= ~(1U<<2);
	RCC->CFGR &= ~(1U<<1);
	RCC->CFGR |=  (1U<<0);

	while((RCC->CFGR & RCC_CFGR_SWS) != RCC_CFGR_SWS_HSE){}

}

void blinky_init(void){

	RCC->IOPENR |= (1U<<0);//LED

	GPIOA->MODER &= ~(1U<<25);
	GPIOA->MODER |=  (1U<<24);//LED

	while(1){


		GPIOA->ODR ^=  (1U<<12);
		for(uint32_t i = 0; i < 300000; i++){}

	}

}

void timer_init(void){

    RCC->APBENR2 |= (1U<<11);//TIM1

    GPIOA->MODER |=  (1U<<1);
    GPIOA->MODER &= ~(1U<<0);//TIM1

    GPIOA->AFR[0] &=~(1U<<3);//TIM
    GPIOA->AFR[0] |= (1U<<2);
    GPIOA->AFR[0] &=~(1U<<1);
    GPIOA->AFR[0] |= (1U<<0);

}

void mco_init(void){

    RCC->IOPENR |= (1U<<5);//MCO

    pin4_PF2();

    GPIOF->MODER |= (1U<<5);
    GPIOF->MODER &= ~(1U<<4);//MCO

    GPIOF->AFR[0] &=~(1U<<11);//MCO
    GPIOF->AFR[0] &=~(1U<<10);
    GPIOF->AFR[0] &=~(1U<<9);
    GPIOF->AFR[0] &=~(1U<<8);

    RCC->CFGR |= (1U<<26);//MCO
    RCC->CFGR &=~(1U<<25);
    RCC->CFGR &=~(1U<<24);
}

void pin8_PC15(void){

	SYSCFG->CFGR3 |= (1U<<7);
	SYSCFG->CFGR3 &=~(1U<<6);
}

void pin1_PC14(void){

	SYSCFG->CFGR3 &=~(1U<<1);
	SYSCFG->CFGR3 |= (1U<<0);
}

void pin4_PF2(void){

	SYSCFG->CFGR3 &=~(1U<<3);
	SYSCFG->CFGR3 &=~(1U<<2);
}