AVR 单片机小学期 12864液晶 双人贪吃蛇游戏

这日志算是记录一下吧。

之所以比较认真对待这个小学期，是因为一个同学找我（因为这个小学期是两人一队验收）。

说想认真做一下分数得高一点。然后我就答应了。

我就负责编，刚开始因为12864他把管脚插错了，总是不行，刚开始我还比较急躁。

觉得他连硬件电路都搭不好我怎么编，而且眼看着只剩两三天时间就验收了。

好在后来电路搭好了（就一个管脚接错了而已！），而且我编程顺利，最后验收效果不错。

我觉得玩起来挺爽的，加速键用着爽。

算一个纪念吧。

#include<avr/io.h> #include<avr/interrupt.h> #define uchar unsigned char #define uint unsigned int /********************端口************************/ #define RS_0 PORTB&=~(1<<0) #define RS_1 PORTB|=(1<<0) #define RW_0 PORTB&=~(1<<1) #define RW_1 PORTB|=(1<<1) #define E_0 PORTB&=~(1<<2) #define E_1 PORTB|=(1<<2) #define RESET_0 PORTB&= ~(1<<4) #define RESET_1 PORTB|= (1<<4) /**************** 常用操作命令和参数定义 *****************/ #define DisplayClear 0x01 //清屏指令(00000001) #define ReturnHome 0x02 //光标回到"00H"(0000001X) #define EntryMode 0x06 //进入点设定,光标右移,AC加1(00000110) #define DisplayOn 0x0c //整体显示开,游标显示关,反白显示关 #define DisplayOff 0x08 //整体显示关 #define CursorOn 0x0e //光标显示开 #define Reverse 0x0d //反白显示开 #define Basic 0x30 //基本指令 #define FAST 0x03; #define SLOW 0x05; #define NORM 0x04; #define Up 0 #define Down 1 #define Left 2 #define Right 3 /******************************延迟函数***********************************/ uchar snakex1[16]={32,31,30,29,28,27,26,25,0,0}; uchar snakey1[16]={16,16,16,16,16,16,16,16,0,0}; uchar snakex2[16]={82,81,80,79,78,77,26,25,0,0}; uchar snakey2[16]={16,16,16,16,16,16,16,16,0,0}; uchar count1,count2; uchar stonex1[9]={31,50,10,15,20,2,22,44,47/*,8,5,55,12,34,10*/}; uchar stoney1[9]={3,21,22,20,35,40,24,11,22/*,41,35,10,5,27,33*/}; uchar stonex2[9]={70,77,80,100,120,112,90,99,88/*,78,96,111,122,64,100*/}; uchar stoney2[9]={3,13,11,20,35,15,24,11,22/*,39,25,10,5,41,33*/}; uchar len1,len2; uchar nowdir1,nowdir2; uchar flag1;//游戏结束的标志 uchar flag2; uchar stop1,stop2; uchar Movex[4]={0,0,-1,1};//依次是上下左右 uchar Movey[4]={-1,1,0,0}; uchar speed; uchar player; void delay(uint ms) { uint i,j; for(i=0;i<ms;i++) { for(j=0;j<1141;j++); } } /************************检测LCD是否忙***************************/ void check_busy(void) { DDRD =0xff; RS_0; RW_1; E_1; DDRD =0x00; delay(1); while(PIND&0x80); E_0; DDRD =0xff; } /***********************************写指令**********************************/ void write_com(uchar com) { check_busy(); RS_0; RW_0; PORTD=com; E_1; delay(1); E_0; } /***********************************写数据*********************/ void write_data(uchar write_data) { check_busy(); RS_1; RW_0; PORTD=write_data; E_1; delay(1); E_0; } void DisplayCLR()//GDRAM清屏，如果没有清屏，会出现花屏现象。 { uchar i,j,k; write_com(0x36); delay(1); for(i=0;i<2;i++) { for(j=0;j<32;j++) { write_com(0x80+j); delay(1); if(i==0) { write_com(0x80); delay(1); } else//写下半屏 { write_com(0x88); } for(k=0;k<16;k++) { write_data(0x00); delay(1); } } } write_com(0x30); } /********************************初始化**********************************/ void init(void) { DDRD=0XFF; DDRB|=0x1f; E_0; RESET_1; len1=5; len2=5; nowdir1=Right; nowdir2=Right; flag1=0; flag2=0; count1=0; count2=0; delay(50); RESET_1; RESET_0; RESET_1; delay(50); write_com(Basic); delay(50); write_com(Basic); delay(50); write_com(DisplayOn);//开显示 delay(500); write_com(DisplayClear);//清屏 delay(50); write_com(EntryMode);//显示模式 delay(50); } uchar read_write_dataa() { uchar i; check_busy(); RW_1; RS_1; delay(1); E_0; delay(1); E_1; delay(1); DDRD=0X00; delay(1);//缺了这句话则不行！！！ i=PIND; delay(1); E_0; delay(1); DDRD=0XFF; return i; } void Showdot(uchar x, uchar y,uchar i)//在128*64的lcd矩阵中显示单个像素点 { uchar x_byte,x_bit; uchar y_byte,y_bit; x_byte=x/16; x_bit=x%16; y_byte=y/32; y_bit=y%32; write_com(0x36);//开扩展指令集 delay(1); write_com(0x80+y_bit); delay(1); write_com(0x80+x_byte+8*y_byte); delay(1); read_write_dataa(); delay(1); uchar check_busy1; uchar check_busy2; check_busy1=read_write_dataa(); delay(1); check_busy2=read_write_dataa(); delay(1); if(x_bit<8) { if(i==1) { check_busy1 |=(0x01<<(7-x_bit)); delay(1); } else { check_busy1 &= ~(0x01<<(7-x_bit)); delay(1); } } else { if(i==1) { check_busy2|=0x01<<(15-x_bit); delay(1); } else { check_busy2 &=~(0x01<<(15-x_bit)); delay(1); } } write_com(0x80+y_bit); delay(1); write_com(0x80+x_byte+8*y_byte); delay(1); write_data(check_busy1); delay(1); write_data(check_busy2); delay(1); write_com(0x30); delay(1); } /********************************设置xy*******************************************/ void set_position(uint x,uint y) { uint adr; switch(y) { case 0: adr = 0x80 + x; break; //在第1行y列显示 case 1: adr = 0x90 + x; break; //在第2行y列显示 case 2: adr = 0x88 + x; break; //在第3行y列显示 case 3: adr = 0x98 + x; break; //在第4行y列显示 default:; adr=0x80; break; } write_com(adr); } /********************************写字符串*******************************************/ void write_string(uint x,uint y,uchar *a) //显示字符串 { uint i=0; set_position(x,y); delay(1); while(a[i]!='\0') { write_data(a[i]); delay(1); i++; } } void Showsnake(uchar * sx,uchar * sy,uchar len)//显示整条蛇 { uchar i; for(i=0;i<len;i++) { Showdot(sx[i],sy[i],1); } } uchar Meetwall(uchar x,uchar y,uchar i)//撞到墙 { if(i==0) { if(x>0&&x<59&&y>0&&y<45) return (0); else return (1); } else { if(x>68&&x<127&&y>0&&y<45) return (0); else return (1); } } uchar Meetself(uchar *sx,uchar *sy,uchar len,uchar x,uchar y)//撞到自己 { uchar i; for(i=0;i<len;i++) { if(sx[i]==x&&sy[i]==y) { return (1); } } return (0); } void Move(uchar * sx,uchar * sy,uchar *len,uchar dir,uchar add)//蛇移动函数 { uchar i; if(add==1)//add==1时增加尾巴。 { sx[(*len)]=sx[(*len)-1]; sy[(*len)]=sy[(*len)-1]; (*len)++; } else Showdot(sx[(*len)-1],sy[(*len)-1],0); for(i=(*len)-1;i!=0;i--) { sx[i]=sx[i-1]; sy[i]=sy[i-1]; } sx[0]+=Movex[dir]; sy[0]+=Movey[dir]; Showdot(sx[0],sy[0],1); } void write_count(uchar i)//显示分数 { uchar arr[2]="0"; if(i==1) { arr[0]+=count1; write_string(3,3,arr); } else { arr[0]+=count2; write_string(7,3,arr); } } void write_result(uchar i)//显示结果 { uchar str1[]="You"; uchar str21[]="Win!"; uchar str22[]="Lose!"; uchar str3[]="Game Over"; switch(i) { case 1: write_string(1,0,str1); write_string(1,1,str22); break; case 2: write_string(5,0,str1); write_string(5,1,str22); break; case 3: write_string(2,2,str3); break; case 4: write_string(1,0,str1); write_string(1,1,str21); break; case 5: write_string(5,0,str1); write_string(5,1,str21); break; } } void Frame() { uchar i; for(i=0;i<60;i++) { Showdot(i,0,1); Showdot(i,45,1); if(player==2) { Showdot(i+68,0,1); Showdot(i+68,45,1); } } for(i=1;i<45;i++) { Showdot(0,i,1); Showdot(59,i,1); if(player==2) { Showdot(68,i,1); Showdot(127,i,1); } } uchar str[]="Count:"; write_string(0,3,str); write_count(1); if(player==2) { write_string(4,3,str); write_count(2); } } void Starttimer0() { TCNT0=0; TIMSK |=(1<<TOIE0); SREG|=0X80; TCCR0 |=speed; } void Starttimer2() { TCNT2=0; TIMSK |=(1<<TOIE2); SREG|=0X80; TCCR2|=speed+2; } uchar key_press() { uchar i; DDRA=0XFF; PORTA=0XF0; DDRA=0X0F; i=PINA; if(i==0XF0) { DDRA=0XFF; return 0; } else { DDRA=0XFF; return 1; } } uchar key_scan()//8个管脚全部接在PINA上 { uchar key,i=0X7F,j;// delay(10);//消抖 if(key_press()) { do { i=(i<<1|i>>7);//因为每次都只能给一个IO口赋值为0,所以这行语句目的是对这个0循环移位。 PORTA=i; DDRA=0X0F; key=PINA; j=key&0XF0;//读取高4位（高4位为输入，低4位为输出） }while(j==0XF0); switch(key) { case 0xDE://0b11011110 key=0x1; if(nowdir2!=Left&&flag2==0) nowdir2=Right; break; case 0x7E: TCCR2 &=~(0x07); TCCR2|=FAST; TCCR2+=2; while(key_press());//直到按键松开才跳出这个语句。 TCCR2 &=~(0x07); TCCR2|=(speed); TCCR2+=2; key=0x3; break; case 0xED: key=0x4; if(nowdir2!=Up&&flag2==0) nowdir2=Down; break; case 0xDD: key=0x5; if(nowdir1!=Left&&flag1==0) nowdir1=Right; break; case 0xBD: key=0x6; if(nowdir2!=Down&&flag2==0) nowdir2=Up; break; case 0x7D: TCCR0 &=~(0x07); TCCR0 |=FAST; while(key_press());//直到按键松开才跳出这个语句。 TCCR0 &=~(0x07); TCCR0|=(speed); key=0x7; break; case 0xEB: key=0x8; if(nowdir1!=Up&&flag1==0) nowdir1=Down; break; case 0xDB: key=0x9; if(nowdir2!=Right&&flag2==0) nowdir2=Left; break; case 0xBB: key=0xA; if(nowdir1!=Down&&flag1==0) nowdir1=Up; break; case 0x7B: while(key_press()); stop2=stop2^1; key=0xB; break; case 0xD7: if(nowdir1!=Right&&flag1==0) nowdir1=Left; break; case 0x77://暂停键 while(key_press()); stop1=stop1^1; key=0xF; break; default: key=16; } } else { key=16; } return key; } uchar Meetstone(uchar x,uchar y,uchar i) { if(i==1) { if(x==stonex1[count1]&&y==stoney1[count1]) { count1 ++; if(count1==9) { flag1=1; write_result(4); } write_count(1); return 1; } else return 0; } else { if(x==stonex2[count2]&&y==stoney2[count2]) { count2 ++; if(count2==9) { flag2=1; write_result(5); } write_count(2); return 1; } else return 0; } } void choose(int i) { uchar arr0[]="*"; uchar arr[4][7]={"Hard","Easy","Single","Double"}; uchar pos=1; uchar *arr1; uchar *arr3; if(i==1) { arr1=arr[0]; arr3=arr[1]; } else { arr1=arr[2]; arr3=arr[3]; } uchar arr5[]=" "; write_string(1,pos,arr0); write_string(2,1,arr1); write_string(2,2,arr3); uchar flag=1; while(flag) { if(key_press()) { switch(key_scan()) { case 7://按键D write_string(1,pos,arr5); pos=(pos)%2+1; delay(1); write_string(1,pos,arr0); break; case 3://按F键确认 flag=0; break; } } } switch(pos) { case 1: if(i==1) { speed=NORM;} else { player=pos;} break; default: if(i==1) { speed=SLOW;} else { player=pos;} break; } write_com(0x01);//清屏命令 } void write_welcome() { uchar a1[]="Welwrite_come"; uchar a2[]=" To"; uchar a3[]="Greedy Snake"; write_string(2,1,a1); write_string(3,2,a2); write_string(1,3,a3); while(key_press()==0); write_com(0x01); } int main(void) { init();//初始化驱动12864液晶屏和初始化相关参数。 write_welcome();//欢迎界面 choose(1);//选择难易程度 choose(2);//选择单人或者双人模式 DisplayCLR();//清屏 Frame();//显示边框 Showsnake(snakex1,snakey1,len1);//显示蛇 Showdot(stonex1[count1],stoney1[count1],1);//显示小豆 Starttimer0();//启动定时器1 if(player==2)//双人模式时 { Starttimer2();//启动定时器2 Showdot(stonex2[count2],stoney2[count2],1); Showsnake(snakex2,snakey2,len2); } while(flag1==0||flag2==0)//循环读取键盘，蛇的转向和加速和暂停等案件处理已经写在key_scan()内部。 { if(key_press()) { key_scan(); } }; write_result(3);//显示game over SREG&=0x7f;//关全局中断，即关定时器，让蛇停止爬行。 DisplayCLR();//将蛇和小豆和边框清除，而字符型不会清楚。即游戏结果还显示着。 return 0; } SIGNAL(SIG_OVERFLOW0)//定时器来实现蛇的不断前进 { uchar x=snakex1[0]+Movex[nowdir1];//蛇头前进的下一个坐标 uchar y=snakey1[0]+Movey[nowdir1];//蛇头前进的下一个坐标 if(flag1==0&&stop1==0) { if(Meetwall(x,y,0)||Meetself(snakex1,snakey1,len1,x,y))//两个判断函数 { flag1=1;//flag1置1使这条蛇“死了”，即不再动了不再受控制了。 write_result(1);//显示you lose } else if(Meetstone(x,y,1))//判断有没有吃到小豆 { Move(snakex1,snakey1,&len1,nowdir1,1);//这里move最末一个参数为1，代表move的同时，蛇身体增长一个单位 Showdot(stonex1[count1],stoney1[count1],1);//显示出新的一个小豆 } else { Move(snakex1,snakey1,&len1,nowdir1,0);//没有吃到小豆的话则move最末参数为0，即蛇身体长度不变。 } } } SIGNAL(SIG_OVERFLOW2)//同理SIGNAL(SIG_OVERFLOW0) { if(flag2==0&&stop2==0) { uchar x=snakex2[0]+Movex[nowdir2]; uchar y=snakey2[0]+Movey[nowdir2]; if(Meetwall(x,y,1)||Meetself(snakex2,snakey2,len2,x,y)) { flag2=1; write_result(2); } else if(Meetstone(x,y,2)) { Move(snakex2,snakey2,&len2,nowdir2,1); Showdot(stonex2[count2],stoney2[count2],1); } else { Move(snakex2,snakey2,&len2,nowdir2,0); } } }