单片机课设——E2PROM数据传送C程序.doc

#include #define uint unsigned int #define uchar unsigned char sbit SCL=P20;sbit SDA=P21;sbit R=P10;sbit W=P11;sbit Ctrl=P12;sbit Shift=P13;uchar code table=0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90;uchar num,flag1,flag2,count;uchar digit011=0xc0,0xff,0xfe,0xfc,0xf8,0xf0,0xe0,0xc0,0xff,0xc0,0xff, digit17=0xf9,0xff,0xfd,0xf9,0xff,0xf9,0xff, digit210=0xa4,0xff,0xfe,0xfc,0xbc,0xac,0xa4,0xff,0xa4,0xff, digit311=0xb0,0xff,0xfe,0xfc,0xbc,0xb8,0xb0,0xb0,0xff,0xb0,0xff, digit49=0x99,0xff,0xdf,0x9f,0x9d,0x99,0xff,0x99,0xff, digit510=0x92,0xff,0xfe,0xde,0x9e,0x9a,0x92,0xff,0x92,0xff, digit611=0x82,0xff,0xfe,0xde,0xce,0xc6,0xc2,0x82,0xff,0x82,0xff, digit78=0xf8,0xff,0xfe,0xfc,0xf8,0xff,0xf8,0xff, digit812=0x80,0xff,0xfe,0xfc,0xbc,0xac,0xa4,0xa0,0x80,0xff,0x80,0xff, digit911=0x90,0xff,0xbf,0x9f,0x9e,0x9c,0x98,0x90,0xff,0x90,0xff;void delay();void delay_nms(uchar n)uchar i,j;for(i=n;i0;i-) for(j=110;j0;j-);void delay_s(uchar n)uchar i;for(i=n;i0;i-)delay_nms(500);void I2C_init()SDA=1;delay();SCL=1;delay();void start()SDA=1;delay();SCL=1;delay();SDA=0;delay(); void stop()SDA=0;delay();SCL=1;delay();SDA=1;delay();void respons()uchar i;SCL=1;delay();while(SDA=0)&i255)i+;SCL=0;delay();void writebyte(uchar dat)uchar i;for(i=0;i8;i+)dat=1;SCL=0;delay();SDA=CY;delay();SCL=1;delay();SCL=0;delay();uchar readbyte()uchar i,temp;SCL=0;delay();SDA=1;delay();for(i=0;i8;i+)SCL=1;delay();temp=(temp1)|SDA;SCL=0;delay();return temp;void write_dat(uchar add,uchar dat)start();writebyte(0xa0);respons();writebyte(add);respons();writebyte(dat);respons();stop();uchar read_dat(uchar add)uchar dat;start();writebyte(0xa0);respons();writebyte(add);respons();start();writebyte(0xa1);respons();dat=readbyte();stop();return dat;void display(uchar digit)P0=tabledigit;void keyscan()if(Shift=0) delay_nms(10);if(Shift=0)while(!Shift)if(W=0) /press Shift+W delay_nms(10);if(W=0)flag2=0;void spe_display(uchar n)uchar i;switch(n)case 0:for(i=0;i11;i+)P0=digit0i;keyscan();if(flag2=0)display(num);break;delay_s(8);break;case 1:for(i=0;i7;i+)P0=digit1i;keyscan();if(flag2=0)display(num);break;delay_s(8);break;case 2:for(i=0;i10;i+)P0=digit2i;keyscan();if(flag2=0)display(num);break;delay_s(8);break;case 3:for(i=0;i11;i+)P0=digit3i;keyscan();if(flag2=0)display(num);break;delay_s(8);break;case 4:for(i=0;i9;i+)P0=digit4i;keyscan();if(flag2=0)display(num);break;delay_s(8);break;case 5:for(i=0;i10;i+)P0=digit5i;keyscan();if(flag2=0)display(num);break;delay_s(8);break;case 6:for(i=0;i11;i+)P0=digit6i;keyscan();if(flag2=0)display(num);break;delay_s(8);break;case 7:for(i=0;i8;i+)P0=digit7i;keyscan();if(flag2=0)display(num);break;delay_s(8);break;case