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Embedded software development stm32f407 buzzer standard library version

2022-07-16 06:33:00 【[email protected]】

Hardware

Punctual atomic Explorer STM32F407ZGT6
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Software

1、Keil uVision5

Code

1、beep.c Key code in

void BEEP_Init(void)
{
       
    GPIO_InitTypeDef GPIO_InitStructure;
	
	// Can make GPIOF The clock 
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOF,ENABLE);
	
	// Initialize the corresponding pin of buzzer GPIOF8
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
	// Normal output mode 
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
	// Push pull output 
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	//100MHz
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
	// The drop-down 
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
	// initialization GPIO
	GPIO_Init(GPIOF,&GPIO_InitStructure);
	// Turn off the buzzer ： Buzzer corresponding pin GPIOF8 Pull it down  
	GPIO_ResetBits(GPIOF,GPIO_Pin_8);
}

2、main.c Key code in

int main(void)
{
     
 
	delay_init(168);		   // Initialization delay function 
	LED_Init();				    // initialization LED port 
	BEEP_Init();         	// Initialize the buzzer port 
	
	while(1)
	{
     
		// DS0 Pull it down , bright   equivalent LED0=0;
		GPIO_ResetBits(GPIOF,GPIO_Pin_9);
		// DS1 Pull it down , bright 
		LED1=0;
		
		//BEEP The pins are pulled up ,  equivalent BEEP=1;
		GPIO_SetBits(GPIOF,GPIO_Pin_8);
		// Time delay 300ms
		delay_ms(300);
		// DS0 pull up , destroy   equivalent LED0=1;
		GPIO_SetBits(GPIOF,GPIO_Pin_9);
		// DS1 pull up , destroy  
		LED1=1;
		
		//BEEP Pin down ,  equivalent BEEP=0;
		GPIO_ResetBits(GPIOF,GPIO_Pin_8);
		// Time delay 300ms
		delay_ms(300);
	}
}