新聞中心

EEPW首頁 > 嵌入式系統(tǒng) > 設(shè)計應(yīng)用 > STM32單片機TIM3蜂鳴器播放音樂

STM32單片機TIM3蜂鳴器播放音樂

作者： 時間：2016-11-25 來源：網(wǎng)絡(luò) 收藏
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]; //讀出時間長度數(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); //清中斷標記
TIM_ClearITPendingBit(TIM3, TIM_IT_Update);
// TIM_Cmd(TIM3, DISABLE);
}
上一頁 1 2 下一頁

評論


技術(shù)專區(qū)

關(guān)閉