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Re: 求教PIC的MSSP主控模式的I2C示范c程序
#3
新會員
新會員


查看用戶資訊
谁能帮我看一下这段程序哪里有问题?谢谢!
#include <pic.h>
#define uint unsigned int
#define uchar unsigned char


uchar addr,data1,data2;
#define slave 0xA0 // slave address literal
void write();
void read();
uchar table[10]={0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0xff};


void write()
{
SEN=1;
do
{
;
}while(SEN=1);
SSPIF=0;
SSPIF=0;
SSPBUF=slave;
do
{
;
}while(SSPIF=0);
if (ACKSTAT)
{
RSEN=1;
do
{
;
}while(RSEN=0);
}
SSPIF=0;
SSPBUF=addr;
do
{
;
}while(SSPIF=1);
do
{
;
}while(ACKSTAT=1);
SSPIF=0;
SSPBUF=data1;
do
{
;
}while(SSPIF=1);
do
{
;
}while(ACKSTAT=1);
PEN=1;
do
{
;
}while(PEN=1);

}

void read()
{
SEN=1;
do
{
;
}while(SEN=1);
SSPIF=0;
SSPIF=0;
SSPBUF=slave;
do
{
;
}while(SSPIF=0);
if (ACKSTAT)
{
RSEN=1;
do
{
;
}while(RSEN=0);
}
SSPIF=0;
SSPBUF=addr;
do
{
;
}while(SSPIF=1);
do
{
;
}while(ACKSTAT=1);
SSPIF=0;
RCEN=1;
do
{
;
}while(SSPIF=1);
ACKDT=1;
ACKEN=1;
do
{
;
}while(ACKEN=1);
PEN=1;
do
{
;
}while(PEN=1);
data2=SSPBUF;
RCEN=0;

}

void main()
{
uchar i;
TRISA=0X00;
PORTA=0X00;
SSPADD=0X63;
SMP=1;
SSPM3=1;
SSPEN=1;
TRISC=0X18;
SSPCON=0X38;
for (i=0;i<10;i++)
{
data1=table[i];
write();
addr++;
}
addr=9;
read();
while(1)
{PORTA=data2;}
}

發表於: 2005/6/1 14:42
Twitter Facebook Google Plus Linkedin Del.icio.us Digg Reddit Mr. Wong 頂部


Re: 求教PIC的MSSP主控模式的I2C示范c程序
#2
版主
版主


查看用戶資訊
可以參考右邊 "範例程式" 裡的第十一項,以 PIC16F877 MI2C 為例的存取 I2C EEPROM 的匯編程式。

C 程式只有用 C18 寫的,目前手上沒有PIC16Fxxx 的C程式。

發表於: 2005/5/31 16:22
Twitter Facebook Google Plus Linkedin Del.icio.us Digg Reddit Mr. Wong 頂部


求教PIC的MSSP主控模式的I2C示范c程序
#1
新會員
新會員


查看用戶資訊
各位大大,小弟要用pic16f767的硬件i2c的主控方式,请各位赐教,谢谢!

發表於: 2005/5/29 12:23
Twitter Facebook Google Plus Linkedin Del.icio.us Digg Reddit Mr. Wong 頂部







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