📄 rf_manchester.c
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temp1=RecvBuf[0]>>5 | (RecvBuf[1] & 0x03 )<<3;
temp2=(temp1 & 0x10)>>4;
temp1=temp1& 0x0F;
if(temp2!=Adj[temp1])
return(0); //校验失败2
RecvBuf[0]=(RecvBuf[0] & 0x0F) | temp1<<4;
temp1=(RecvBuf[1]>>2) & 0x1F;
temp2=(temp1 & 0x10)>>4;
temp1=temp1& 0x0F;
if(temp2!=Adj[temp1])
return(0); //校验失败3
RecvBuf[1]=(RecvBuf[1] & 0xF0) | temp1;
temp1=RecvBuf[1]>>7 | (RecvBuf[2] & 0x0F)<<1;
temp2=(temp1 & 0x10)>>4;
temp1=temp1& 0x0F;
if(temp2!=Adj[temp1])
return(0); //校验失败4
RecvBuf[1]=(RecvBuf[1] & 0x0F) | temp1<<4;
temp1=(RecvBuf[2]>>4 & 0x0F)| (RecvBuf[3] & 0x01)<<4;
temp2=(temp1 & 0x10)>>4;
temp1=temp1& 0x0F;
if(temp2!=Adj[temp1])
return(0); //校验失败5
RecvBuf[2]=(RecvBuf[2] & 0xF0) | temp1;
temp1=RecvBuf[3]>>1 & 0x1F;
temp2=(temp1 & 0x10)>>4;
temp1=temp1& 0x0F;
if(temp2!=Adj[temp1])
return(0); //校验失败6
RecvBuf[2]=(RecvBuf[2] & 0x0F) | temp1<<4;
temp1=((RecvBuf[3]>>6) & 0x03) | ((RecvBuf[4] <<2) & 0x1c);
temp2=(temp1 & 0x10)>>4;
temp1=temp1& 0x0F;
if(temp2!=Adj[temp1])
return(0); //校验失败7
RecvBuf[3]=(RecvBuf[3] & 0xF0) | temp1;
temp1=RecvBuf[4]>>3;
temp2=(temp1 & 0x10)>>4;
temp1=temp1& 0x0F;
if(temp2!=Adj[temp1])
return(0); //校验失败8
RecvBuf[3]=(RecvBuf[3] & 0x0F) | temp1<<4;
temp1=RecvBuf[5] & 0x1F;
temp2=(temp1 & 0x10)>>4;
temp1=temp1& 0x0F;
if(temp2!=Adj[temp1])
return(0); //校验失败9
RecvBuf[4]=(RecvBuf[4] & 0xF0) | temp1;
temp1=RecvBuf[5]>>5 | (RecvBuf[6] & 0x03 )<<3;
temp2=(temp1 & 0x10)>>4;
temp1=temp1& 0x0F;
if(temp2!=Adj[temp1])
return(0); //校验失败2
RecvBuf[4]=(RecvBuf[4] & 0x0F) | temp1<<4;
RecvBuf[5]=(RecvBuf[6]>>2) & 0x0F;
temp1=0;
for(i=0;i<5;i++)
{
temp1=temp1^(RecvBuf[i] & 0x01)^((RecvBuf[i] & 0x10) >>4);
}
temp2=RecvBuf[5]&0x01;
if(temp1!=temp2)
return(0);
temp1=0;
for(i=0;i<5;i++)
{
temp1=temp1^((RecvBuf[i] & 0x02)>>1)^((RecvBuf[i] & 0x20) >>5);
}
temp2=(RecvBuf[5]&0x02)>>1;
if(temp1!=temp2)
return(0);
temp1=0;
for(i=0;i<5;i++)
{
temp1=temp1^((RecvBuf[i] & 0x04)>>2)^((RecvBuf[i] & 0x40) >>6);
}
temp2=(RecvBuf[5]&0x04)>>2;
if(temp1!=temp2)
return(0);
temp1=0;
for(i=0;i<5;i++)
{
temp1=temp1^((RecvBuf[i] & 0x08)>>3)^((RecvBuf[i] & 0x80) >>7);
}
temp2=(RecvBuf[5]&0x08)>>3;
if(temp1!=temp2)
return(0);
return(1);
}
/*--------------------------------------------------------------------------------
函数： HeadFindHandle(uchar HFHData)
功能： 数据起始字头判断(找出9个连续的1)
引用值：uchar HFHData:由Manchster()解码出的数据(0,1,2,3)
返回值：无
--------------------------------------------------------------------------------*/
void HeadFindHandle(uchar HFHData)
{
if(HFHData==1)
{
DataHeadbuf.intHigh++; //是高电平就自动加1,找出字头(9个1)
}
else if(HFHData==0)
{
DataHeadbuf.intLow++; //是低电平判断高电平是否有9个连续的1
if(DataHeadbuf.intHigh!=9)
{
DataHeadbuf.intHigh=0; //无连续9个1,说明数据头不对,丢弃从新检测
DataHeadbuf.intLow=0;
}
else
{
OS_Status=Start_Check; //是字头则改变状态到数据接收检测,并清高电平个数从新计数
DataHeadbuf.intHigh=0;
Push_Data(0x00); //数据保存
}
}
else if(HFHData==3)
{ //检测错误,清0从新检测
DataHeadbuf.intHigh=0;
DataHeadbuf.intLow=0;
mcsbuf.Head=mcsHeadNull;
}
}
/*--------------------------------------------------------------------------------
函数： DataRecvHandle(uchar DRHData)
功能： 处理数据接收(9个1之后的55位数据)
引用值：uchar DRHData
返回值：无
--------------------------------------------------------------------------------*/
void DataRecvHandle(uchar DRHData)
{
if(DRHData==1)
{
DataHeadbuf.intHigh++; //是高电平就自动加1,找出字头(9个1)
Push_Data(0x01); //数据保存
}
else if(DRHData==0)
{
DataHeadbuf.intLow++; //是低电平判断高电平是否有9个连续的1
Push_Data(0x00); //数据保存
}
else if(DRHData==3)
{ //检测错误,清0从新检测
OS_Status=Start_Find;
DataHeadbuf.intHigh=0;
DataHeadbuf.intLow=0;
mcsbuf.Head=mcsHeadNull;
}
}
/*--------------------------------------------------------------------------------
函数：
功能：
引用值：
返回值：
--------------------------------------------------------------------------------*/
void Main(void)
{
uchar temp;
InitReg();
TR0 = 1;
EA = 1;
High_Timer = 0;
Low_Timer = 0;
FeedDog();
while(1)
{
IRbitPri = IRbitNext;
IRbitPri = IRbitNext;
IRbitNext = IRout;
IRbitNext = IRout;
FeedDog();
if(IRbitPri!=IRbitNext) //有跳变处理
{
IRbitNext = IRout;
IRbitNext = IRout;
IRbitNext = IRout;
IRbitNext = IRout;
IRbitNext = IRout;
IRbitNext = IRout;
IRbitNext = IRout;
IRbitNext = IRout;
IRbitNext = IRout;
if(IRbitPri!=IRbitNext) //有跳变处理
{
FeedDog();
Low_Timer=TH0;
temp=TL0;
High_Timer=TH0; //低电平时间计算
if(Low_Timer==High_Timer)
{
Low_Timer=temp+High_Timer*256;
}
else
{
Low_Timer=TL0+High_Timer*256;
}
High_Timer=Low_Timer;
TL0=0x00;
TH0=0x00;
if((IRbitPri==0)&&(IRbitNext==1)) //如果前一位为低电平
{
temp=Manchster(mcsLowTimer);
}
else if((IRbitPri==1)&&(IRbitNext==0)) //如果前一位是高电平
{
temp=Manchster(mcsHighTimer);
}
if(OS_Status==Start_Find)
{ //数据头检测
HeadFindHandle(temp);
}
else if(OS_Status==Start_Check)
{
DataRecvHandle(temp);
}
}
}
}
}
/*--------------------------------------------------------------------------------
函数：
功能：
引用值：
返回值：
--------------------------------------------------------------------------------*/
/*
if(IRbit)
{
IRbitPri = IRbitNext;
IRbitNext = IRbit;
IRbitNext = IRbit;
IRbitNext = IRbit;
IRbitNext = IRbit;
IRbitNext = IRbit;
if(IRbitPri!=IRbitNext) //有跳变处理
{
Low_Timer=TH0;
temp=TL0;
High_Timer=TH0; //低电平时间计算
if(Low_Timer==High_Timer)
{
Low_Timer=temp+High_Timer*256;
}
else
{
Low_Timer=TL0+High_Timer*256;
}
TL0=0x00;
TH0=0x00;
temp=Manchster(mcsLowTimer);
if(OS_Status==Start_Find)
{ //数据头检测
HeadFindHandle(temp);
}
else if(OS_Status==Start_Check)
{
}
}
}
else// if((IRbit1==0)&&(OS_Change!=HL_NoChange))
{
IRbitPri = IRbitNext;
IRbitNext = IRbit;
IRbitNext = IRbit;
IRbitNext = IRbit;
IRbitNext = IRbit;
IRbitNext = IRbit;
if(IRbitPri!=IRbitNext) //有跳变处理
{
Low_Timer=TH0;
temp=TL0;
High_Timer=TH0;
if(Low_Timer==High_Timer)
{
High_Timer=temp+High_Timer*256;
}
else
{
High_Timer=TL0+High_Timer*256;
}
TL0=0x00;
TH0=0x00;
temp=Manchster(mcsHighTimer);
if(OS_Status==Start_Find)
{ //数据头检测
HeadFindHandle(temp);
}
else if(OS_Status==Start_Check)
{
}
}
}*/⌨️ 快捷键说明
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