一份不知道哪里来的第十五届国赛模拟题

这是一个不知道来源的模拟题目，没有完全完成，只作代码记录，不作分析和展示，极其冗长，但里面有长按短按双击的复合，可以看看。

题目

代码

底层驱动

IIC（EEPROM没在主程序用）

unsigned char guangmin(){unsigned char ret;I2CStart();I2CSendByte(0x90);I2CWaitAck();I2CSendByte(0x41);I2CWaitAck();I2CStart();I2CSendByte(0x91);I2CWaitAck();ret = I2CReceiveByte();I2CSendAck(1);I2CStop();return ret;
}void DAC(unsigned char dat){I2CStart();I2CSendByte(0x90);I2CWaitAck();I2CSendByte(0x41);I2CWaitAck();I2CSendByte(dat);I2CWaitAck();I2CStop();
}void eepromwirte(unsigned char addr,unsigned char dat){I2CStart();I2CSendByte(0xa0);I2CWaitAck();I2CSendByte(addr);I2CWaitAck();I2CSendByte(dat);I2CWaitAck();I2CStop();
}unsigned char eepromread(unsigned char addr){unsigned char ret;I2CStart();I2CSendByte(0xa0);I2CWaitAck();I2CSendByte(addr);I2CWaitAck();I2CStart();I2CSendByte(0xa1);I2CWaitAck();ret = I2CReceiveByte();I2CSendAck(1);I2CStop();return ret;
}

主程序核心代码

#include <STC15F2K60S2.H>
#include "intrins.h"
#include "inithc138.h"
#include "delay.h"
#include "onewire.h"
#include "iic.h"
#include "ds1302.h"#define de 5
code unsigned char Seg_Table[17] = 
{
0xc0, //0
0xf9, //1
0xa4, //2
0xb0, //3
0x99, //4
0x92, //5
0x82, //6
0xf8, //7
0x80, //8
0x90, //9
0x88, //A
0x83, //b
0xc6, //C
0xa1, //d
0x86, //E
0x8e, //F
0xbf
};
unsigned char show = 0;//显示功能切换
unsigned char canshu = 0;//参数界面切换
bit mode = 1;//控制模式切换
unsigned char jiaozhun = 0;//校准设置切换
bit huixian = 0;//回显模式切换
unsigned int temp = 0;//温度
bit ce = 1;
unsigned int time = 0;//超声波传播时间
long distance = 0;//距离
unsigned char cejushangxian = 80;//测距上限
unsigned char cejuxiaxian = 20;//测距下限
unsigned int tempcan = 30;//温度参数
unsigned char light = 0;//光敏参数
unsigned char ds1302writeaddr[3] = {0x80,0x82,0x84};
unsigned char ds1302readaddr[3] = {0x81,0x83,0x85};
unsigned char rtctime[3] = {0x05,0x29,0x10};
char disjiao = 0;//距离校准值
int tempjiao = 0;//温度校准值
unsigned char temptime[3] = {0};//温度超限时间
unsigned char distime[3] = {0};//温度超限时间
double daczhi = 0;//DAC输出大小
bit zhouqi = 0;//1为进入按键周期
unsigned char keycount = 0;//按键周期计时
unsigned char cishu = 0;
bit zhouqi1 = 0;//1为进入按键周期
unsigned char keycount1 = 0;//按键周期计时
unsigned char cishu1 = 0;
bit keystat = 0;//按键状态（长短按）
unsigned int count = 0;//长按计时
unsigned char ledstat = 0xff;
unsigned char ledcount = 0;
bit ledflag = 0;
bit chaoxian = 0;
unsigned int tempshow = 0;//校准后的温度
//*****************************************测温模块
void cewen(){unsigned char LSB,MSB;init_ds18b20();Write_DS18B20(0xcc);Write_DS18B20(0x44);if(ce){Delay(520);}ce = 0;init_ds18b20();Write_DS18B20(0xcc);Write_DS18B20(0xbe);LSB = Read_DS18B20();MSB = Read_DS18B20();init_ds18b20();temp = ((MSB << 8) | LSB) * 0.625;tempshow = temp + tempjiao;}
//*****************************************
//*****************************************超声波模块
sbit TX = P1^0;
sbit RX = P1^1;
void showselect();
void Delay13us(void)	//@12.000MHz
{unsigned char data i;_nop_();_nop_();i = 36;while (--i);
}void fangbo(){unsigned char i;for(i = 0;i < 8;i++){TX = 1;Delay13us();TX = 0;Delay13us();}
}void initpca(){CMOD = 0x01;CCON = 0x00;
}void ceju(){CH = 0x00;CL = 0x00;CF = 0;CR = 0;			fangbo();CR = 1;while((RX == 1) && (CH < 0x17));CR = 0;if(RX == 0){RX = 1;time = (CH << 8) | CL;distance = time * 0.017;}
}
//*****************************************
//*****************************************DS1302实时时钟
void ds1302config(){unsigned char i;Write_Ds1302_Byte(0x8e,0x00);for(i = 0;i < 3;i++){Write_Ds1302_Byte(ds1302writeaddr[i],rtctime[i]);}Write_Ds1302_Byte(0x8e,0x80);
}void ds1302read(){unsigned char i;for(i = 0;i < 3;i++){rtctime[i] = Read_Ds1302_Byte(ds1302readaddr[i]);}
}
//*****************************************
//*****************************************显示功能
void shujujiemian(){//数据界面showsmg(1,Seg_Table[12]);showsmg(2,Seg_Table[tempshow / 100]);showsmg(3,Seg_Table[tempshow / 10 % 10] & 0x7f);showsmg(4,Seg_Table[tempshow % 10]);if((distance + disjiao) >= 0){showsmg(8,Seg_Table[(distance + disjiao) % 10]);if((distance + disjiao) > 9){showsmg(7,Seg_Table[(distance + disjiao) / 10 % 10]);}}else{showsmg(7,0xc7);showsmg(8,0xc7);}
}void p1(){//参数P1showsmg(1,0x8c);showsmg(2,Seg_Table[1]);showsmg(6,0x89);showsmg(7,Seg_Table[cejushangxian / 10]);showsmg(8,Seg_Table[cejushangxian % 10]);
}void p2(){//参数P2showsmg(1,0x8c);showsmg(2,Seg_Table[2]);showsmg(6,0xc7);showsmg(7,Seg_Table[cejuxiaxian / 10]);showsmg(8,Seg_Table[cejuxiaxian % 10]);
}void p3(){//参数P3showsmg(1,0x8c);showsmg(2,Seg_Table[3]);showsmg(7,Seg_Table[tempcan / 10]);showsmg(8,Seg_Table[tempcan % 10]);
}void p4(){//参数P4showsmg(1,0x8c);showsmg(2,Seg_Table[4]);if(mode){showsmg(4,0x8c);showsmg(5,Seg_Table[14]);}else{showsmg(4,Seg_Table[10]);showsmg(5,0xc1);}showsmg(8,Seg_Table[light % 10]);if(light > 9){showsmg(7,Seg_Table[light / 10 % 10]);}if(light > 99){showsmg(6,Seg_Table[light / 100 % 10]);}
}void canshujiemian(){//参数界面switch(canshu){case 0:p1();break;case 1:p2();break;case 2:p3();break;case 3:p4();break;}
}void shijianjiemian(){//时间显示showsmg(1,Seg_Table[rtctime[2] / 16]);showsmg(2,Seg_Table[rtctime[2] % 16]);showsmg(3,Seg_Table[16]);showsmg(4,Seg_Table[rtctime[1] / 16]);showsmg(5,Seg_Table[rtctime[1] % 16]);showsmg(6,Seg_Table[16]);showsmg(7,Seg_Table[rtctime[0] / 16]);showsmg(8,Seg_Table[rtctime[0] % 16]);
}void f1(){showsmg(1,Seg_Table[15]);showsmg(2,Seg_Table[1]);if(disjiao >= 0){showsmg(8,Seg_Table[disjiao % 10]);if(disjiao > 9){showsmg(7,Seg_Table[disjiao / 10 % 10]);}}else if(disjiao < 0){if(disjiao >= -9){showsmg(8,Seg_Table[-(disjiao) % 10]);showsmg(7,Seg_Table[16]);}if(disjiao < -9){showsmg(8,Seg_Table[-(disjiao) % 10]);showsmg(7,Seg_Table[-(disjiao) / 10 % 10]);showsmg(6,Seg_Table[16]);}}
}void f2(){showsmg(1,Seg_Table[15]);showsmg(2,Seg_Table[2]);if(tempjiao > 0){showsmg(8,Seg_Table[tempjiao % 10]);showsmg(7,Seg_Table[tempjiao  / 10 % 10] & 0x7f);}else if(tempjiao < 0){showsmg(8,Seg_Table[(-tempjiao) % 10]);showsmg(7,Seg_Table[(-tempjiao) / 10 % 10] & 0x7f);showsmg(6,Seg_Table[16]);}else if(tempjiao == 0){showsmg(8,Seg_Table[0]);}
}void f3(){showsmg(1,Seg_Table[15]);showsmg(2,Seg_Table[3]);if(mode){showsmg(7,0x8c);showsmg(8,Seg_Table[14]);}else{showsmg(7,Seg_Table[10]);showsmg(8,0xc1);}
}void jiaozhunshezhi(){//校准设置界面switch(jiaozhun){case 0:f1();break;case 1:f2();break;case 2:f3();break;}
}void wenduchaoxian(){//温度超限时间记录showsmg(1,0x8b);showsmg(2,0xa7);if(temptime[2] != 0){showsmg(3,Seg_Table[temptime[2] / 16]);showsmg(4,Seg_Table[temptime[2] % 16]);showsmg(5,Seg_Table[temptime[1] / 16]);showsmg(6,Seg_Table[temptime[1] % 16]);showsmg(7,Seg_Table[temptime[0] / 16]);showsmg(8,Seg_Table[temptime[0] % 16]);}
}void julichaoxian(){//距离超限时间记录showsmg(1,0x8b);showsmg(2,0xa1);if(distime[2] != 0){showsmg(3,Seg_Table[distime[2] / 16]);showsmg(4,Seg_Table[distime[2] % 16]);showsmg(5,Seg_Table[distime[1] / 16]);showsmg(6,Seg_Table[distime[1] % 16]);showsmg(7,Seg_Table[distime[0] / 16]);showsmg(8,Seg_Table[distime[0] % 16]);}
}void huixianmoshi(){//回显模式if(huixian == 0){wenduchaoxian();}else{julichaoxian();}
}
//*****************************************
//*****************************************DAC输出
void DACshuchu(){if((disjiao + distance) <= cejuxiaxian){daczhi = 51;}else if((disjiao + distance) >= cejushangxian){daczhi = 255;}else{daczhi = (204 / (cejushangxian - cejuxiaxian)) * (disjiao + distance - cejuxiaxian) + 51;}DAC(daczhi);
}
//*****************************************
//*****************************************
void showselect(){switch(show){case 0:shujujiemian();break;case 1:canshujiemian();break;case 2:shijianjiemian();break;case 3:jiaozhunshezhi();break;case 4:huixianmoshi();break;}
}
//*****************************************
//*****************************************单击双击检测
void Timer0_Isr(void) interrupt 1
{ledcount++;if(zhouqi){keycount++;}if(keycount == 100){zhouqi = 0;}if(zhouqi1){keycount1++;}if(keycount1 == 100){zhouqi1 = 0;}if(keystat){count++;}if(ledcount == 200){ledcount = 0;}if(ledcount % 20 == 0){ledflag = ~ledflag;}
}void Timer0_Init(void)		//5毫秒@12.000MHz
{AUXR |= 0x80;			//定时器时钟1T模式TMOD &= 0xF0;			//设置定时器模式TL0 = 0xA0;				//设置定时初始值TH0 = 0x15;				//设置定时初始值TF0 = 0;				//清除TF0标志TR0 = 1;				//定时器0开始计时ET0 = 1;				//使能定时器0中断EA = 1;
}//*****************************************
//*****************************************按键扫描
void scankey(){P33 = 0;P32 = 1;P44 = 1;P35 = 1;if(P44 == 0){//S4Delay(de);while(P44 == 0){showselect();}show++;jiaozhun = 0;canshu = 0;huixian = 0;show %= 5;}if(P35 == 0){//S12Delay(de);if(P35 == 0){zhouqi = 1;}while(P35 == 0){showselect();}cishu++;if(show == 1){if(canshu == 2){tempcan++;if(tempcan > 40){tempcan = 40;}}else if((canshu == 3) && (mode == 1)){light += 10;if(light > 200){light = 200;}}}if(show == 3){if(jiaozhun == 0){disjiao++;if(disjiao > 10){disjiao = 10;}}else if(jiaozhun == 1){tempjiao++;if(tempjiao > 30){tempjiao = 30;}}}}if(show == 1){if(zhouqi == 0){if(cishu == 1){//单击if(show == 1){if(canshu == 0){cejushangxian++;if(cejushangxian > 90){cejushangxian = 90;}}else if(canshu == 1){cejuxiaxian++;if(cejuxiaxian > (cejushangxian - 20)){cejuxiaxian = cejushangxian - 20;}}}}if(cishu == 2){//双击if(show == 1){if(canshu == 0){cejushangxian += 10;if(cejushangxian > 90){cejushangxian = 90;}}else if(canshu == 1){cejuxiaxian += 10;if(cejuxiaxian > (cejushangxian - 20)){cejuxiaxian = cejushangxian - 20;}}}}keycount = 0;cishu = 0;}}P33 = 1;P32 = 0;P44 = 1;P35 = 1;if(P44 == 0){//S5Delay(de);while(P44 == 0){showselect();}if(show == 1){canshu++;canshu %= 4;}if(show == 3){jiaozhun++;jiaozhun %= 3;}if(show == 4){huixian = ~huixian;}}if(P35 == 0){//S13Delay(de);if(P35 == 0){zhouqi1 = 1;}while(P35 == 0){keystat = 1;showselect();}keystat = 0;if(count < 400){//短按cishu1++;if(show == 1){if(canshu == 2){tempcan--;if(tempcan < 20){tempcan = 20;}}else if((canshu == 3) && (mode == 1)){light -= 10;if(light > 200){light = 0;}}}if(show == 3){if(jiaozhun == 0){disjiao--;if(disjiao < -10){disjiao = -10;}}else if(jiaozhun == 1){tempjiao--;if(tempjiao < -30){tempjiao = -30;}}}}else{if(show == 3){if(jiaozhun == 0){disjiao = 0;}if(jiaozhun == 1){tempjiao = 0;}}}count = 0;}if(show == 1){if(zhouqi1 == 0){if(cishu1 == 1){//单击if(show == 1){if(canshu == 0){cejushangxian--;if(cejushangxian < (cejuxiaxian + 20)){cejushangxian = cejuxiaxian + 20;}}else if(canshu == 1){cejuxiaxian--;if(cejuxiaxian < 10){cejuxiaxian = 10;}}}}if(cishu1 == 2){//双击if(show == 1){if(canshu == 0){cejushangxian -= 10;if(cejushangxian < (cejuxiaxian + 20)){cejushangxian = (cejuxiaxian + 20);}}else if(canshu == 1){cejuxiaxian -= 10;if(cejuxiaxian < 10){cejuxiaxian = 10;}}}}keycount1 = 0;cishu1 = 0;}}
}
//*****************************************
//*****************************************LED模块与超限判断
void chaoxianpanduan(){if(((temp + tempjiao) / 10) > tempcan){chaoxian = 1;temptime[0] = rtctime[0];temptime[1] = rtctime[1];temptime[2] = rtctime[2];//eepromwirte()}
}void led(){unsigned char tmp = 0;if(tempshow > tempcan * 10){ledstat = ledstat & ~0x10;}else{ledstat = ledstat | 0x10;}if((show == 0) && (ledflag == 1)){ledstat = ledstat & ~0x01;}else{ledstat = ledstat | 0x01;}if((show == 3) && (ledflag == 1)){ledstat = ledstat & ~0x02;}else{ledstat = ledstat | 0x02;}if(((distance + disjiao) <=cejushangxian) && ((distance + disjiao) >= cejuxiaxian)){ledstat = ledstat | 0x08;}else{ledstat = ledstat & ~0x08;}tmp = guangmin();if((mode == 1) && (tmp > light)){ledstat = ledstat & ~0x80;}else{ledstat = ledstat | 0x80;}outputp0(4,ledstat);
}
//*****************************************
void main(){ds1302config();cewen();initpca();initsys();ceju();Timer0_Init();while(1){if(mode == 0){light = guangmin();}cewen();led();ceju();showselect();ds1302read();DACshuchu();scankey();chaoxianpanduan();}
}

关键：双击单击长按复合代码

以S12为例

//*****************************************单击双击检测
void Timer0_Isr(void) interrupt 1
{ledcount++;if(zhouqi){keycount++;}if(keycount == 100){zhouqi = 0;}if(zhouqi1){keycount1++;}if(keycount1 == 100){zhouqi1 = 0;}if(keystat){count++;}if(ledcount == 200){ledcount = 0;}if(ledcount % 20 == 0){ledflag = ~ledflag;}
}void Timer0_Init(void)		//5毫秒@12.000MHz
{AUXR |= 0x80;			//定时器时钟1T模式TMOD &= 0xF0;			//设置定时器模式TL0 = 0xA0;				//设置定时初始值TH0 = 0x15;				//设置定时初始值TF0 = 0;				//清除TF0标志TR0 = 1;				//定时器0开始计时ET0 = 1;				//使能定时器0中断EA = 1;
}//*****************************************P33 = 0;P32 = 1;P44 = 1;P35 = 1;if(P44 == 0){//S4Delay(de);while(P44 == 0){showselect();}show++;jiaozhun = 0;canshu = 0;huixian = 0;show %= 5;}if(P35 == 0){//S12Delay(de);if(P35 == 0){zhouqi = 1;}while(P35 == 0){showselect();}cishu++;if(show == 1){if(canshu == 2){tempcan++;if(tempcan > 40){tempcan = 40;}}else if((canshu == 3) && (mode == 1)){light += 10;if(light > 200){light = 200;}}}if(show == 3){if(jiaozhun == 0){disjiao++;if(disjiao > 10){disjiao = 10;}}else if(jiaozhun == 1){tempjiao++;if(tempjiao > 30){tempjiao = 30;}}}}if(show == 1){if(zhouqi == 0){if(cishu == 1){//单击if(show == 1){if(canshu == 0){cejushangxian++;if(cejushangxian > 90){cejushangxian = 90;}}else if(canshu == 1){cejuxiaxian++;if(cejuxiaxian > (cejushangxian - 20)){cejuxiaxian = cejushangxian - 20;}}}}if(cishu == 2){//双击if(show == 1){if(canshu == 0){cejushangxian += 10;if(cejushangxian > 90){cejushangxian = 90;}}else if(canshu == 1){cejuxiaxian += 10;if(cejuxiaxian > (cejushangxian - 20)){cejuxiaxian = cejushangxian - 20;}}}}keycount = 0;cishu = 0;}}

注意几个要点：
1、涉及到双击，要把判断部分抽离按键按下阶段，否则不会进行判断
2、注意按键周期，在编程过程中可以用数码管显示按键周期和按键按下进行调试。
3、定时器尽量使用1T，优先级尽量高。