stm32 基于寄存器开发实现控制led灯

void  led_config(void)
{
	//开时钟
	RCC->APB2ENR |= (0x1<<4);

	//配置高位寄存器为 通用推挽输出模式 输出频率为2Mhz
	GPIOC->CRH &=~(0xf); //0000  
	GPIOC->CRH  |= (0x1<<1);//0010
    
    //配置低位寄存器为 通用推挽输出模式 输出频率为2Mhz
	GPIOC->CRL &=~(0xFF<<24);//0000,0000  
	GPIOC->CRL |=(0x1<<29);//0010
	GPIOC->CRL |=(0x1<<25);//0010

    //关灯
	GPIOC ->ODR |=(0x1<<8);// close led
	GPIOC->ODR |=(0x1<<7);
	GPIOC->ODR |=(0x1<<6);
}

void ledr_open(void) //打开红灯
{
	GPIOC->ODR &=~(0x1<<8); 
}

void ledg_open(void) //打开绿灯
{
	GPIOC->ODR &=~(0x1<<7);
}

void ledb_open(void) //打开蓝灯
{
	GPIOC->ODR &=~(0x1<<6);
}