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怎么正确的运用PIC单片机内部的IIC通讯

如何正确的使用PIC单片机内部的IIC通信-#include

#define uchar unsigned char

#define uint unsigned int

#define add 0xaa

__CONFIG(0x3B31);

const uchar ee_data[]={1,2,3,4,5,6};

uchar read_data[6];

const uchar table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,

0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};

#include

#define uchar unsigned char

#define uint unsigned int

#define add 0xaa

__CONFIG(0x3B31);

const uchar ee_data[]={1,2,3,4,5,6};

uchar read_data[6];

const uchar table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,

0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};

void delay(uint x);

void init();

void didi(uchar num);

void disp(uchar num1,uchar num2,uchar num3,uchar num4,uchar num5,uchar num6);

void write();

void read();

void main()

{

init();

write();

delay(100);

read();

while(1)

{

disp(read_data[0],read_data[1],read_data[2],read_data[3],read_data[4],read_data[5]);

}

}

void delay(uint x)

{

uint a,b;

for(a=x;a》0;a–)

for(b=110;b》0;b–);

}

void init()

{

TRISD=0;

TRISA=0;

TRISE0=0;

//ADCON1=0x07;

RE0=0;

PORTD=0;

PORTA=0;

TRISC=0xff;

SSPSTAT=0x80;

SSPCON=0x38;

SSPCON2=0;

SSPADD=0x09;

}

void write()

{

uchar i;

SSPIF=0;

SEN=1;

while(!SSPIF);

SSPIF=0;

SSPBUF=0xA0;

while(!SSPIF);

SSPIF=0;

SSPBUF=add;

while(!SSPIF);

SSPIF=0;

for(i=0;i《6;i++)

{

SSPBUF=ee_data[i];

while(!SSPIF);

SSPIF=0;

}

PEN=1;

while(!SSPIF);

SSPIF=0;

}

void read()

{

uchar i;

SSPIF=0;

SEN=1;

while(!SSPIF);

SSPIF=0;

SSPBUF=0xA0;

while(!SSPIF);

SSPIF=0;

SSPBUF=add;

while(!SSPIF);

SSPIF=0;

SSPIF=0;

RSEN=1;

while(!SSPIF);

SSPIF=0;

SSPBUF=0xA1;

while(!SSPIF);

SSPIF=0;

for(i=0;i《6;i++)

{

RCEN=1;

while(!SSPIF);

read_data[i]=SSPBUF;

while(!SSPIF);

SSPIF=0;

if(i》=5)

{

ACKDT=1;

}

else

{

ACKDT=0;

}

ACKEN=1;

while(!SSPIF);

SSPIF=0;

}

PEN=1;

while(!SSPIF);

SSPIF=0;

}

void didi(uchar num)

{

uchar di_num;

for(di_num=num;di_num》0;di_num–)

{

RE0=1;

delay(50);

RE0=0;

delay(20);

}

}

本文引证地址: http://www.21ic.com/app/mcu/201812/786472.htm

void disp(uchar num1,uchar num2,uchar num3,uchar num4,uchar num5,uchar num6)

{

PORTD=table[num1];//显现第一个数码管

PORTA=0x20;//0010 0000

delay(2);

PORTD=table[num2];//显现第二个数码管

PORTA=0x10;//0001 0000

delay(2);

PORTD=table[num3];//显现第三个数码管

PORTA=0x08;//0000 1000

delay(2);

PORTD=table[num4];//显现第四个数码管

PORTA=0x04;//0000 0100

delay(2);

PORTD=table[num5];//显现第五个数码管

PORTA=0x02;//0000 0010

delay(2);

PORTD=table[num6];//显现第六个数码管

PORTA=0x01;//0000 0001

delay(2);

}

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