模塊篇02.超聲波實(shí)驗(yàn)

ARMSTM32開(kāi)STM32開(kāi)發(fā)板庫(kù)函數(shù)--模塊 課堂 大黃蜂STM32開(kāi)發(fā)板超聲波模塊實(shí)驗(yàn)（HC-一．實(shí)驗(yàn)效果圖二.PC機(jī)顯示超聲波模塊測(cè)試距線方STM32開(kāi)發(fā)板超聲波模塊（HC-TRIG（發(fā)射ECHO（接收四．操作方法先把超聲波模塊測(cè)試程序下傳到STM32開(kāi)發(fā)板中打開(kāi)PC機(jī)“眾想科技多功能系統(tǒng)”，將串口配置（9600，無(wú)，8，1）格式，選擇相應(yīng)的串口打五．實(shí)驗(yàn)源代碼#includevoidRCC_Configuration(void);voidGPIO_Configuration(void);voidNVIC_Configuration(void);voidintfputc(intch,FILE{returnch;}//TRIGPD3//ECHOPD6int{u16count;while{TIM2->CNT=0;//計(jì)數(shù)器清0TIM_Cmd(TIM2,ENABLE);//TIM2enablecountertim2TIM_Cmd(TIM2,間printf("}}void{}void{GPIO_InitTypeDef}void{NVIC_InitTypeDefNVIC_InitStructure.NVIC_IRQChannel=USART1_IRQn;NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;NVIC_InitStructure.NVIC_IRQChannel=TIM2_IRQn;NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;}void{USART_InitTypeDef}#includevoid{TIM_TimeBaseInitTypeDefTIM_DeInit(TIM2);/TIM2TIM_TimeBaseStructure.TIM_Period=TIM_TimeBaseStructure.TIM_Prescaler=71;TIM_TimeBaseStructure.TIM_ClockDivision=0x0;TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;TIM_TimeBaseInit(TIM2,&TIM_TimeBaseStructure);TIM_ClearFlag(TIM2,TIM_ITConfig(TIM2,TIM_IT_Update,} 稱：delay_us(u32 能：微秒延時(shí)函參數(shù)：u32 明voiddelay_us(u32nus){u32SysTick->LOAD={temp=SysTick->CTRL;//當(dāng)前倒計(jì)數(shù)SysTick->CTRL=0x00;SysTick->VAL=0X00;} 稱：delay_ms(u16 能：毫秒延時(shí)函參數(shù)：u16 明voiddelay_ms(u16nms){u32SysTick->LOAD=90