问题：此模拟IIC，在413上可以运行，读取和写入数据正常，但是在123上就不可以！
望各位高人指教！
#include <GLOBAL.h>
#include <stdlib.h>
#include <stdbool.h>
#include <msp430x12x.h>
#define BIT0 (0x0001)
#define BIT1 (0x0002)
#define BIT2 (0x0004)
#define IicWpDirOut P1DIR |= BIT2
#define IicWpDirIn P1DIR &= ~BIT2
#define IicWpHig P1OUT |= BIT2
#define IicWpLow P1OUT &= ~BIT2
#define IicSclDirOut P1DIR |= BIT1
#define IicSclDirIn P1DIR &= ~BIT1
#define IicSclHig P1OUT |= BIT1
#define IicSclLow P1OUT &= ~BIT1
#define IicSdaDirOut P1DIR |= BIT0
#define IicSdaDirIn P1DIR &= ~BIT0
#define IicSdaHig P1OUT |= BIT0
#define IicSdaLow P1OUT &= ~BIT0
#define IicSdaInSt P1IN & BIT0
bool AckErr;
unsigned char TimeDelay=10;
//-----***-IIC延时(一个nop是纳秒 10个大概是1.67微秒大概总线速度在300K符合IIC在写状态下400K的要求)-***-----//
void IicInit(void)
{
IicWpDirOut;
IicSdaDirOut;
IicSclDirOut;
IicWpHig;
IicSdaHig;
IicSclHig;
}
//-----***-IIC启示-***-----//
void IicStart(void)
{
IicSdaHig;//IicSda=1;
Delay(TimeDelay);
IicSclHig;//IicScl=1;
Delay(TimeDelay);
IicSdaLow;//IicSda=0;
Delay(TimeDelay);
IicSclLow;//IicScl=0;
Delay(TimeDelay);
}
//-----***-IIC停止-***-----//
void IicStop(void)
{
IicSdaLow;//IicSda=0;
Delay(TimeDelay);
IicSclHig;//IicScl=1;
Delay(TimeDelay);
IicSdaHig;//IicSda=1;
Delay(TimeDelay);
}
//-----***-IIC错误-***-----//
void IicErr(void)
{
AckErr=1;
IicStop();
}
//-----***-IIC应答-***-----//
void SendAcknowledge(bool ack)
{
IicSdaDirOut;
if(ack)//IicSda=ack;
{
IicSdaHig;
}
else
{
IicSdaLow;
}
Delay(TimeDelay);
IicSclHig;//IicScl=1;
Delay(TimeDelay);
IicSclLow;//IicScl=0;
Delay(TimeDelay);
}
//-----***-从slave端读取一个数据-***-----//
unsigned char IicReceiveByte(void)
{
unsigned char i;
unsigned char bytedata=0;
IicSdaDirOut;
IicSdaHig;//IicSda=1;
IicSdaDirIn;
for(i=0;i<8;i++)
{
IicSclHig;//IicScl=1;
Delay(TimeDelay);
bytedata<<=1;
if(IicSdaInSt&BIT0)
{
bytedata |=0x01;
}
else
{
bytedata &=0xfe;
}
IicSclLow;//IicScl=0;
Delay(TimeDelay);
}
IicSdaDirOut;
return bytedata;
}
//-----***-传送一个 Byte 数据到 slave-***-----//
bool IicSentByte(unsigned char DataByte)
{
unsigned char i;
bool ack;
ack=1;
IicSdaDirOut;
for(i=0;i<8;i++)
{
if(DataByte & 0x80)
{
IicSdaHig;//IicSda=1;
}
else
{
IicSdaLow;//IicSda=0;
}
DataByte <<=1;
Delay(TimeDelay);
IicSclHig;//IicScl=1;
Delay(TimeDelay);
IicSclLow;//IicScl=0;
Delay(TimeDelay);
}
IicSdaHig;//IicSda=1;
Delay(TimeDelay);
IicSclHig;//IicScl=1;
Delay(TimeDelay);
IicSdaDirIn;
if(IicSdaInSt&BIT0)
{
ack=0;
}
else
{
ack=1;
}
IicSdaDirOut;
IicSclLow;//IicScl=0;
Delay(TimeDelay);
return ack;
}
//-----***-无扇区读---多字节-***-----//
//读取指定器件无扇区指定地址多字节数据到指定地址
//Device=器件地址---单字节
//DataAdd=字节地址---单字节
void IicMuchByteRead(unsigned char Device,unsigned char DataAdd,unsigned char *DataDptr,unsigned char DataLend)
{
unsigned char i;
IicWpHig;
IicStart();
IicSentByte(Device);
IicSentByte(DataAdd);
IicStart();
IicSentByte(Device|0x01);
for(i=0;i<DataLend-1;i++)
{
*DataDptr=IicReceiveByte();
DataDptr++;
SendAcknowledge(0);
}
*DataDptr=IicReceiveByte();
SendAcknowledge(1);
IicStop();
}
//-----***-无扇区写---多字节-***-----//
//写入指定器件无扇区指定地址中的多字节数据
//Device=器件地址---单字节
//DataAdd=字节地址---双字节
//DataByte=被存放数据的地址
//DataLend=被存放数据的长度
void IicMuchByteWrite(unsigned char Device,unsigned char DataAdd,unsigned char *DataDptr,unsigned char DataLend)
{
unsigned char i,j;
for(i=0;i<3;i++)
{
AckErr=0;
IicWpLow;
IicStart();
if(IicSentByte(Device)){IicErr();continue;}
if(IicSentByte(DataAdd)){IicErr();continue;}
for(j=0;j<DataLend;j++)
{
if(IicSentByte(*DataDptr)){IicErr();continue;}
DataDptr++;
}
IicStop();
if(!AckErr)
{
break;
}
}
IicWpHig;
Delay(50000);
}
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