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STM32單片機(jī)TIM3蜂鳴器播放音樂(lè)

作者：時(shí)間：2016-11-25 來(lái)源：網(wǎng)絡(luò)

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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

GPIO_Init(GPIOD, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;

GPIO_Init(GPIOB, &GPIO_InitStructure);

}

void delay1(uchar i)

{

long j;

for(;i>0;i--)

{

for(j=0;j<6000;j++);

}

void delay(uchar i)

{

unsigned long j;

TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

TIM_Cmd(TIM3, DISABLE);

for(;i>0;i--)

{

for(j=0;j<60000;j++);

}

//TIM_Cmd(TIM3, ENABLE);

}

void song()

{

// TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

// TIM_TimeBaseStructure.TIM_Period = reload_time;

// reload_time=FREQH[k]*256+FREQL[k];

TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

reload_time=get_time;

TIM_TimeBaseStructure.TIM_Period = reload_time;

TIM_Cmd(TIM3, ENABLE);

delay(time);

}

int main (void)

{

uchar i=0;

RCC_Configuration(); //配置時(shí)鐘

NVIC_Configuration();

GPIO_Configuration(); //配置IO口

TIM3_Configuration();

GPIO_WriteBit(GPIOD, GPIO_Pin_9, (BitAction)1);

GPIO_WriteBit(GPIOB, GPIO_Pin_5, (BitAction)1);

delay1(10);

GPIO_WriteBit(GPIOD, GPIO_Pin_9, (BitAction)0);

GPIO_WriteBit(GPIOB, GPIO_Pin_5, (BitAction)0);

while(1)

{

time=1;

i=0;

while(i<75)

{

k=sszymmh[i]+7*sszymmh[i+1]-1;

get_time=FREQH[k]*256+FREQL[k];

time = sszymmh [i+ 2]; //讀出時(shí)間長(zhǎng)度數(shù)值

i=i+3;

song();

}

}}

void TIM3_IRQHandler (void)

{

// TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;

TIM_Cmd(TIM3, DISABLE);

if(TIM_GetITStatus(TIM3,TIM_IT_Update)!=RESET)//判斷是否為定時(shí)器3溢出中斷

{

(bool)beep=!beep;

reload_time=get_time;

GPIO_WriteBit(GPIOB, GPIO_Pin_5, (BitAction)beep);

GPIO_WriteBit(GPIOD, GPIO_Pin_9, (BitAction)beep);

}

TIM_ClearFlag(TIM3, TIM_FLAG_Update); //清中斷標(biāo)記

TIM_ClearITPendingBit(TIM3, TIM_IT_Update);

// TIM_Cmd(TIM3, DISABLE);

}

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