基于單片機(jī)智能停車場(chǎng)的設(shè)計(jì)程序

1、精選優(yōu)質(zhì)文檔-傾情為你奉上車位誘導(dǎo)程序：（1）系統(tǒng)初始化：一般情況，直接調(diào)用此函數(shù)將單片機(jī)系統(tǒng)時(shí)鐘設(shè)置在72MHzSystemInit();程序中經(jīng)常要用到延時(shí)函數(shù)，在這里為了提高CPU工作效率，不再使用死等待的演示方式，而是采用定時(shí)器作延時(shí)。void Delay_Configuration(u8 SYSCLK)RCC_APB1PeriphClockCmd(Delay_RCC_APB1Periph_TIMx, ENABLE);TIM_PrescalerConfig(Delay_TIMx, SYSCLK, TIM_PSCReloadMode_Update);（2）超聲波檢測(cè)模塊初始化/超聲波軟件

2、系統(tǒng)初始化void Sonic_Init(void)Sonic_RCC_Configuration(); Sonic_GPIO_Configuration();Sonic_NVIC_Configuration();Sonic_TIM_Configuration(); ：/打開超聲波需要使用的系統(tǒng)資源的時(shí)鐘void Sonic_RCC_Configuration(void)RCC_APB2PeriphClockCmd(SONIC_RCC_APB2Periph_GPIOx_OUT|SONIC_RCC_APB2Periph_GPIOx_IN,ENABLE);/打開時(shí)鐘RCC_APB1PeriphCl

3、ockCmd(SONIC_RCC_APB1Periph_TIMx,ENABLE);/這里設(shè)置超聲波檢測(cè)所需要的引腳的相應(yīng)功能void Sonic_GPIO_Configuration(void)GPIO_InitTypeDef GPIO_InitStructure;/*············波形輸出 驅(qū)動(dòng)超聲波···········*/GPIO_InitStruct

4、ure.GPIO_Pin=SONIC_GPIO_Pinx_OUT;GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AF_PP;/!GPIO_Init(SONIC_GPIOx_OUT,&GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = SONIC_GPIO_Pinx_IN;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;GPIO_InitStructure.G

5、PIO_Speed = GPIO_Speed_50MHz;GPIO_Init(SONIC_GPIOx_IN, &GPIO_InitStructure);/打開中斷，設(shè)置中斷優(yōu)先級(jí)void Sonic_NVIC_Configuration(void)NVIC_InitTypeDef NVIC_InitStructure;NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); /設(shè)置優(yōu)先級(jí)NVIC_InitStructure.NVIC_IRQChannel=SONIC_TIMx_IRQn;/使能外部中斷線1(IRQ通道)NVIC_InitStruct

6、ure.NVIC_IRQChannelPreemptionPriority=0; /先占優(yōu)先級(jí)NVIC_InitStructure.NVIC_IRQChannelSubPriority=0; /從優(yōu)先級(jí)NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;NVIC_Init(&NVIC_InitStructure); /定時(shí)器的初始化配置void Sonic_TIM_Configuration(void)TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;TIM_OCInitTypeDef TIM_OCInit

7、Structure;TIM_ICInitTypeDef TIM_ICInitStructure;/*通用定時(shí)器配置*/TIM_TimeBaseStructure.TIM_Period =65535;/TIMx->ARR設(shè)置自動(dòng)裝載值TIM_TimeBaseStructure.TIM_Prescaler =72;/TIMx->PSC 設(shè)置預(yù)分頻器值TIM_TimeBaseStructure.TIM_ClockDivision =TIM_CKD_DIV1;/設(shè)置時(shí)鐘頻率TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;

8、 /選擇計(jì)數(shù)器模式TIM_TimeBaseInit(SONIC_TIMx, & TIM_TimeBaseStructure);TIM_OCStructInit(&TIM_OCInitStructure); /默認(rèn)參數(shù) TIM_OCInitStructure.TIM_OCMode=TIM_OCMode_PWM1;/模式1設(shè)置輸出比較3模式 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; /設(shè)置為輸出TIM_OCInitStructure.TIM_Pulse =21; /設(shè)置捕獲比較寄存器4值即占空長度 T

9、IM_OCInitStructure.TIM_OCPolarity=TIM_OCPolarity_High;/設(shè)置輸出極性-高電平 TIM_OC4Init(SONIC_TIMx, &TIM_OCInitStructure); /初始化TIMx通道4. TIM_OC4PreloadConfig(SONIC_TIMx, TIM_OCPreload_Enable); /TIMx->CCMR2 OC4PE 輸出比較4的預(yù)加載使能位TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;TIM_ICInitStructure.TIM_ICPolari

10、ty = TIM_ICPolarity_Rising;TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;TIM_ICInitStructure.TIM_ICFilter = 0x0;TIM_PWMIConfig(SONIC_TIMx, &TIM_ICInitStructure);/* Select the TIM3 Input Trigger: TI2FP2 */TIM_SelectInputTrigger

11、(SONIC_TIMx, TIM_TS_TI2FP2);/* Select the slave Mode: Reset Mode */TIM_SelectSlaveMode(SONIC_TIMx, TIM_SlaveMode_Reset);/* Enable the Master/Slave Mode */TIM_SelectMasterSlaveMode(SONIC_TIMx, TIM_MasterSlaveMode_Enable);/* TIM enable counter */TIM_Cmd(SONIC_TIMx, ENABLE);/* Enable the CC2 Interrupt

12、Request */TIM_ITConfig(SONIC_TIMx, TIM_IT_CC2, ENABLE);/定時(shí)器中斷里邊的內(nèi)容void TIMx_IRQHandler(void)if(TIM_GetITStatus(SONIC_TIMx,TIM_IT_CC2)!=RESET) TIM_ClearITPendingBit(SONIC_TIMx,TIM_IT_CC2); value1=TIM_GetCapture2(SONIC_TIMx); if(value1!=0) value2=TIM_GetCapture1(SONIC_TIMx); else value1=0;value2=0; ti

13、me=value2; /12864液晶顯示模塊初始化/初始化液晶，引腳初始化，發(fā)送初始化命令void initlcd12864()GPIO_Config();write_com(0x30);delayms(1);write_com(0x0c);/整體顯示開 游標(biāo)關(guān) 游標(biāo)位置關(guān)delayms(1);write_com(0x01);delayms(5);/液晶引腳資源初始化void GPIO_Config(void)GPIO_InitTypeDef GPIO_InitStructure;RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOx|RCC_APB2Peri

14、ph_GPIOy,ENABLE);GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_Init(GPIOx, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10;GPIO_InitStructure.GPIO_Speed = GPIO_

15、Speed_50MHz;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_Init(GPIOy, &GPIO_InitStructure);/打印顯示漢字程序，包括設(shè)定顯示坐標(biāo)，顯示內(nèi)容void hanzi(unsigned char x,unsigned char y,unsigned char *z) /顯示漢字 字符unsigned char pos;if(x=0)x=0x80;if(x=1)x=0x90;if(x=2)x=0x88;if(x=3)x=0x98;pos=x+y;write_com(pos);while(*z!

16、='0')write_date(*z);z+; /主函數(shù)內(nèi)容int main(void)u8 a,b,c,d;SystemInit();GPIO_Configuration();/串口引腳初始化USART_Configuration(9600);/串口初始化，方便系統(tǒng)調(diào)試Delay_Configuration(72);/系統(tǒng)延時(shí)函數(shù)初始化Sonic_Init();/超聲波初始化initlcd12864();/液晶顯示模塊初始化printf("n OK n");/初始化結(jié)束 串口打印OK信息while(1)a=Sonic1();b=Sonic2();c=Sonic3();d=Sonic4();if(a<=100) hanzi(0,0,"1號(hào)車位 無車 ");elsehanzi(0,0,"1號(hào)車位 有車 ");if(b<=100