/*******************************************************************************************
函数原形：void Uart1_Init_Rec(int pclk,int baud)
功能描述：当工作在接收模式下时，初始化UART1(485)
参 数：无
*******************************************************************************************/
void Uart1_Init_Rec(int pclk,int baud)
{
int i;
if (pclk == 0)
pclk = PCLK;
rUFCON1=0x0; //FIFO disable
rUMCON1=0x0; //AFC disable
rULCON1=0x33; //8位数据，1位停止位，第9位(奇偶位)强制为1
rUCON1=0x105; //rx=edge,tx=level,disable timeout int.,enable rx error int.,normal,interrupt or polling
rUBRDIV1=( (int)(pclk/16./baud) -1 );//bps = 38400
pISR_UART1=(unsigned)Uart1_RXInt_LT1200;
rSRCPND=BIT_UART1;
rINTPND=BIT_UART1;
rSUBSRCPND=BIT_SUB_RXD1;//清除RXD1,ERR1中断挂起标志位
rINTMSK &=~(BIT_UART1); //去除UART中断屏蔽
rINTSUBMSK &=~(BIT_SUB_RXD1);//去除子中断屏蔽
for(i=0;i<100;i++);
}
/*******************************************************************************************
函数原形：void __irq Uart0_RXInt_LT1200(void)
功能描述：LT1200 485接收中断处理程序
参 数：无
*******************************************************************************************/
void __irq Uart1_RXInt_LT1200(void)
{
char buffer[6]={2,4,0,0,0,0};
unsigned short JoinNum,Value,i;
if (((rUTRSTAT1&0x1)>0) && (rUERSTAT1==0))
{
ch=~rURXH1;
if(_9bit==0)
{//Parity Check as 0
if(ch==0x00) //分隔符
{//Next Command Start
gState=0xfe;//ff:no active ,fe:active,fd:got id,00~f0:get how many receive buf
}
}
else
{
if(gState==0xfe)
{//接收的第一个字符
gReceiveID=ch;
if(ch==0xff)
{//接收到复位指令（FF 02 03 00） 或查询网络型号指令（FF 02 03 01 ID 00）
gState=0xfc;
gReceiveLen=0;
}
else
{//接收到ID,
gState--;//gState = fd
}
}
else if(gState==0xfd)//ID XX
{
if(ch==00)
{//ID 00 主机空闲
gState=0xfe;
if(gReceiveID==h_config->NetID) //just search me to input
{
gMyTimeOut=0;
gReceive00Time=0; //the pgm2 have searched me ,so I work properly.
if(pSendHead!=pSendTail)
{
buffer[2]=(unsigned char)pSendHead->JoinNum;
buffer[3]=(unsigned char)(pSendHead->JoinNum>>8);
buffer[4]=(unsigned char)pSendHead->Value;
buffer[5]=(unsigned char)(pSendHead->Value>>8);
if(++pSendHead==(Sendbuf+50))pSendHead=Sendbuf;
Send_485(buffer,6);
}
else Send_485("x2x0",2);
}
}
else
{//接收到信息,ID LEN
gReceiveLen=ch;
gState=0;
}
}
else if(gState==0xfc)//接收到复位指令（FF 02 03 00） 或查询网络型号指令（FF 02 03 01 ID 00）
{
switch(gReceiveLen)
{
case 0:
if(ch==0x02) gReceiveLen++;//FF 02
else gState=0xff;//错误无效
break;
case 1:
if(ch==0x03) gReceiveLen++;//FF 02 03
else gState=0xff;
break;
case 2:
if(ch==0x01) gReceiveLen++;//FF 02 03 01
else if(ch==0x00) //FF 02 03 00 = 复位
{
// HardReset();//接收到主机的复位指令（FF 02 03 00）
// Uart_Printf("
Receive = FF 02 03 00");
// Uart_Printf("
Reset");
} //reset
else gState=0xff;
break;
case 3:
gReceiveID=ch; //FF 02 03 01 ID
gReceiveLen++;
break;
case 4:
if(ch==00) //FF 02 03 01 ID 00
{//查询网络型号指令（FF 02 03 01 ID 00）
gMyTimeOut=0;
gState=0xfe; //search net device
if(gReceiveID==h_config->NetID)
{
// Delay(1);
Send_485(SERIES,14);
}
}
else gState=0xff;
break;
}
}
else if(gState!=0xff)//ID LEN Value
{//接收到信息
gMyTimeOut=0;//when geting long data ,ignore the time out.
ReceiveBuffer[gState++]=ch;
if(gReceiveLen==gState)
{
// rULCON1=0x3b; //reset to get 00;//Parity forced as 0,Command end
if(gReceiveID==h_config->NetID) //control me
{
gState=0xfe;
JoinNum=ReceiveBuffer[1];
JoinNum<<=8;
JoinNum+=ReceiveBuffer[0];
pTaskTail->JoinNum=JoinNum;
if(JoinNum>1999)
{
Uart_SendByte(JoinNum);
pTaskTail->Value=gReceiveLen-2;
pTaskTail->pBuf=pStringBuf;
for(i=0;i<gReceiveLen;i++)
{
*pStringBuf=ReceiveBuffer[i+2];
if(++pStringBuf==(StringBuf+1024))pStringBuf=StringBuf;
}
}
else if(JoinNum>999)
{
Value=ReceiveBuffer[3];
Value<<=8;
Value+=ReceiveBuffer[2];
pTaskTail->Value=Value;
}
else
{
Uart_SendByte(JoinNum);
if(ReceiveBuffer[2]==0x00)Value=1;
else Value=0;
pTaskTail->Value=Value;
}
if(++pTaskTail==(Taskbuf+50))pTaskTail=Taskbuf;
// TestVal[2] = executeevent.animatedTimer - TestVal[0];
}
}
}
}
}
rSRCPND=BIT_UART1;
rINTPND=BIT_UART1;
rSUBSRCPND=BIT_SUB_RXD1;//清除RXD1,ERR1中断挂起标志位
} |
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