#include <stdint.h>
int main(void)
{
   //way 1 access registers member using pointers

	uint32_t *ahb1BusEnable=(uint32_t*)0x40023830;//enabling clock for the AHB1 bus
	*ahb1BusEnable |= (1<<0);

	//way-2 Access registers member directly
	//RCC->AHB1ENR |=(1U<<0);//enabling clock for the AHB1 bus

	//enable moder as 0 1 coz its output pin
	unint32_t *moder5Enable=(uint32_t*)0x400200000;
	*moder5Enable|=(1<<10);

	//blink led pin 5
	uint32_t *odr5Enable=(uint32_t*)0x40020014;

	while(1)
	{
		*odr5Enable|=(1<<5);//led pin5 on

		*odr5Enable&=~(1<<5);//led pin5 off
	}
}