📄 qd.c
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PCA0CPM0 = 0x49; // Change module 0 to software
// timer mode, interrupts enabled.
SURXST++; // Update RX state variable.
}
break;
// States 1-8: Bit Received
// - Sample SW_RX pin
// - Shift new bit into RXSHIFT
// - Add 1 bit time to module 0 capture registers
// - Increment RX state variable
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 8:
RXSHIFT = RXSHIFT >> 1; // Shift right 1 bit
if (SW_RX) // If SW_RX=1,
RXSHIFT |= 0x80; // shift '1' into RXSHIFT msb
PCA_TEMP = (PCA0CPH0 << 8); // Read module 0 contents into
PCA_TEMP |= PCA0CPL0; // PCA_TEMP.
PCA_TEMP += TIME_COUNT; // Add 1 bit time to PCA_TEMP
PCA0CPL0 = PCA_TEMP; // Restore PCA0CPL0 and PCA0CPH0
PCA0CPH0 = (PCA_TEMP >> 8); // with the updated value
SURXST++; // Update RX state variable.
break;
// State 9: 8-bits received, Capture STOP bit.
// - Move RXSHIFT into RDR.
// - Set SRI (indicate receive complete).
// - Prepare module 0 for next transfer.
// - Reset RX state variable.
// - Trigger IE7 if user-level interrupt support is enabled.
case 9:
RDR = RXSHIFT; // Move received data to receive register.
SRI = 1; // Set receive complete indicator.
PCA0CPM0 = 0x11; // Switch module 0 to negative capture
// mode; interrupt enabled for START
// detection.
SURXST = 0; // Reset RX state variable.
if (SES){ // If user-level interrupt support enabled
EIE2 |= 0x20; // Enable IE7.
PRT1IF |= 0x80; // Trigger IE7.
}
break;
}
}
// Check Transmit interrupt; service if CCF1 is set.
else if (CCF1){
CCF1 = 0; // Clear interrupt flag
switch (SUTXST){
// State 0: Transmit Initiated.
// Here, the user has loaded a byte to transmit into TDR, and set the
// module 1 interrupt to initiate the transfer.
// - Transmit START bit (drop SW_TX)
// - Read PCA0, add one bit time, & store in module 1 capture registers
// for first bit.
// - Increment TX state variable.
case 0:
SW_TX = 0; // Drop TX pin as START bit.
PCA_TEMP = PCA0L; // Read PCA counter value into
PCA_TEMP |= (PCA0H << 8); // PCA_TEMP.
PCA_TEMP += TIME_COUNT; // Add 1 bit time.
PCA0CPL1 = PCA_TEMP; // Store updated match value into
PCA0CPH1 = (PCA_TEMP >> 8); // module1 capture/compare registers.
PCA0CPM1 |= 0x48; // Enable module 1 software timer.
SUTXST++; // Update TX state variable.
break;
// States 1-9: Transmit Bit.
// - Output LSB of TDR onto TX
// - Shift TDR 1 bit right.
// - Shift a '1' into MSB of TDR for STOP bit in State 9.
// - Add 1 bit time to module 1 capture register
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 8:
case 9:
SW_TX = (TDR & 0x01); // Output LSB of TDR onto SW_TX pin.
TDR >>= 1; // Shift TDR right 1 bit.
TDR |= 0x80; // Shift '1' into MSB of TDR for
// STOP bit in State 9.
PCA_TEMP = (PCA0CPH1 << 8); // Read module 0 contents into
PCA_TEMP |= PCA0CPL1; // PCA_TEMP.
PCA_TEMP += TIME_COUNT; // Add 1 bit time to PCA_TEMP
PCA0CPL1 = PCA_TEMP; // Restore PCA0CPL1 and PCA0CPH1
PCA0CPH1 = (PCA_TEMP >> 8); // with the updated value
SUTXST++; // Update TX state variable.
break;
// State 10: Last bit has been transmitted. Transmit STOP bit
// and end transfer.
// - Transmit STOP bit
// - Set TX Complete indicator, clear Busy flag
// - Reset TX state
// - Prepare module 1 for next transfer.
// - Trigger IE7 interrupt if user-level interrupts enabled.
case 10:
STI = 1; // Indicate TX complete.
SUTXST = 0; // Reset TX state.
SW_TX = 1; // SW_TX should remain high.
PCA0CPM1 = 0x01; // Disable module 1 software timer; leave
// interrupt enabled for next transmit.
if (SES){ // If user-level interrupt support enabled:
EIE2 |= 0x20; // Enable IE7.
PRT1IF |= 0x80; // Trigger IE7.
}
STXBSY = 0; // SW_UART TX free.
break;
}
}
}
//-----------------------------------------------------------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------------------------------------------------------
//------------------------------------------------------------------------------------------------------------------------------------------
//WAVECOM 数据接收子程序：串口0中断服务程序
void Serial0_WAVECOM(void) interrupt 4
{
EA=0;
if (RI0)
{
RI0=0;
if(RECEIVE_FLAG==0)
{
if(SBUF0==0x7E)
{
RECEIVE_FLAG=1;
RECEIVEBUFFERPOINT=RECEIVEBUFFER;
}
}
else
{
if(SBUF0==0x7E)
{
if(RECEIVEBUFFERPOINT!=RECEIVEBUFFER) //排除连续收到两个7E，数据长度为0的错误情况
{
RECEIVE_FLAG=0;
PPP_Rec_Complete = 1;
}
}
else
{
if(PADDING_Flag==1)
{
*RECEIVEBUFFERPOINT=SBUF0;
*RECEIVEBUFFERPOINT^=0x20;
PADDING_Flag=0;
RECEIVEBUFFERPOINT++;
}
else
{
if(SBUF0==0x7D)
PADDING_Flag=1;
else
{
*RECEIVEBUFFERPOINT=SBUF0;
RECEIVEBUFFERPOINT++;
}
}
}
}
}
EA=1;
}
//----------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------
//MDB数据接收子程序 ：串口1中断服务程序
void Receive_MDB(void) interrupt 20
{
unsigned char temp,Rec_Data,i;
EIE2 &= 0xbf; //关闭串口1中断
if(SCON1 & 0x01==0x01){
SCON1 &= 0xfe; // 清串口1标字位
Rec_Data=SBUF1;
if (ReceiveFlag==0)
{
//Has received the first byte
switch ( Rec_Data)
{
case 0x78: //receive the command reset
ReceiveFlag=1;
Information_Type=0;
break;
case 0x79: //receive the device error status
ReceiveFlag=1;
Information_Type=1;
break;
case 0x7a: //receive the column error status
ReceiveFlag=1;
Information_Type=2;
break;
case 0x7b: //receive the goods status
ReceiveFlag=1;
Information_Type=3;
break;
case 0x7c: //receive the sale info
ReceiveFlag=1;
Information_Type=4;
break;
case 0x7d: //receive the device info
ReceiveFlag=1;
Information_Type=5;
break;
case 0x7e: //request the control info
ReceiveFlag=1;
Information_Type=6;
break;
case 0x0 :
SCON1 |= 0x20; // SM2位置1，只在地址时中断
Rec_Ack_Flag=1;
// Ctrl_Complete_Flag=1;
// Deal_Flag=0;
// if(Ctrl_Info_Flag==1) //控制信息已下发
// Ctrl_Info_Flag=0;
break;
default:
break;
}
Receive_Data_Num=0; //clear the number of the receiving data
InfoData_BufferPoint=InfoData_Buffer;
*InfoData_BufferPoint=Rec_Data;
Receive_Data_Num++;
SCON1 &= 0xdf; // 清SM2位，允许中断，无论数据还是地址
}
else
{
*(InfoData_BufferPoint+Receive_Data_Num)=Rec_Data;
Receive_Data_Num++;
switch (Information_Type)
{
case 0:
if( Receive_Data_Num==2)
{
SCON1 |= 0x20; // SM2位置1，只在地址时中断
if (Check_Info_Data(InfoData_Buffer,Receive_Data_Num)) //?????judge if the check_num is right
{
Deal_Flag=1;
}
else
{
Send_Retransmit(); // 不做任何操作，相当于NAK
Receive_Data_Num=0;
ReceiveFlag=0;} //enable to receive the information data again
}
break;
case 1:
if( Receive_Data_Num==8)
{
SCON1 |= 0x20; // SM2位置1，只在地址时中断
if (Check_Info_Data(InfoData_Buffer,Receive_Data_Num))
{
Deal_Flag=1;
/* if (First_Rec_Flag==0)
{
counter=5; //3秒为回应时间
EX1=1;
First_Rec_Flag=1;
}*/
}
else
{
Send_Retransmit(); //不做任何操作，相当于NAK
Receive_Data_Num=0;
ReceiveFlag=0;
} //enable to receive the information data again
}
break;
case 2 :
if( Receive_Data_Num==8)
{
SCON1 |= 0x20; // SM2位置1，只在地址时中断
if (Check_Info_Data(InfoData_Buffer,Receive_Data_Num))
{
Deal_Flag=1;
/* if (First_Rec_Flag==0)
{
counter=5;
EX1=1;//打开外部中断1
First_Rec_Flag=1;
} */
}
else
{
Send_Retransmit(); //不做任何操作，相当于NAK
Receive_Data_Num=0;
ReceiveFlag=0;
} //enable to receive the information data again
}
break;
case 3:
if( Receive_Data_Num==8)
{
SCON1 |= 0x20; // SM2位置1，只在地址时中断
if (Check_Info_Data(InfoData_Buffer,Receive_Data_Num))
{
Deal_Flag=1;
/* if (First_Rec_Flag==0)
{
counter=5;
EX1=1;// EIE2|=0x01;
First_Rec_Flag=1;
} */
}
else
{
Send_Retransmit(); //不做任何操作，相当于NAK
Receive_Data_Num=0;
ReceiveFlag=0;
} //enable to receive the information data again
}
break;
case 4:
if( Receive_Data_Num==4)
{
SCON1 |= 0x20; // SM2位置1，只在地址时中断
if (Check_Info_Data(InfoData_Buffer,Receive_Data_Num))
{ Deal_Flag=1;
/*if (First_Rec_Flag==0)
{
counter=5;
EX1=1; // EIE2|=0x01;
First_Rec_Flag=1;
}*/
}
else
{
Send_Retransmit(); //不做任何操作，相当于NAK
Receive_Data_Num=0;
ReceiveFlag=0;
} //enable to receive the information data again
}
break;
case 5:
if( Receive_Data_Num==30)
{
SCON1 |= 0x20; // SM2位置1，只在地址时中断
if (Check_Info_Data(InfoData_Buffer,Receive_Data_Num))
{
Deal_Flag=1;
/*if (First_Rec_Flag==0)
{
counter=5;
EX1=1; // EIE2|=0x01;
First_Rec_Flag=1;
}*/
}
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