void COM_task()
{
volatile UINT8 uartData = 0,i;
communication.curAppTime = GetAppTime();
if(RCSTA1bits.OERR == 1)
{
RCSTA1bits.CREN = 0;
Delay10us(1);
RCSTA1bits.CREN = 1;
}
if( communication.prevAppTime != communication.curAppTime)
{
if( communication.prevState == communication.state && (communication.state == COM_IN_PACKET_COLLECTION))
{
--communication.timeout ;
if( communication.timeout == 0)
{
//COM_txStr("RESTART");
COM_restart();
return;
}
}
communication.prevAppTime = communication.curAppTime;
}
switch( communication.state)
{
case COM_START:
#if(defined __18F8722_H) ||(defined __18F46K22_H)
if( UART1_hasData() == FALSE )
return;
uartData = UART1_read();
#else
if( UART1_hasData() == FALSE )
return;
uartData = UART_read();
#endif
if( uartData == communication.rx_sop )
{
communication.rxPacketIndex = 0;
communication.state = COM_IN_PACKET_COLLECTION;
communication.timeout = TIMEOUT;
}
break;
case COM_IN_PACKET_COLLECTION:
#if(defined __18F8722_H) ||(defined __18F46K22_H)
if( UART1_hasData()==FALSE )
return;
uartData = UART1_read();
#else
if( UART_hasData()==FALSE )
return;
uartData = UART_read();
#endif
if(uartData == communication.rx_eop )
{
UINT8 parseResult = 0;
COM_RESP_CODE txCode = COM_RESP_NONE;
UINT8 *txData ;
parseResult = parsePacket(&txCode); //parse packet
switch( parseResult)
{
case IGNORE:
COM_reset();
return;
case PARSE_SUCCESS:
if( communication.callBack != 0 )
{
communication.txPacketLength = communication.callBack(&communication.rxPacketBuffer[COM_RX_DATA_START_INDEX], &communication.txCode,
&txData);
communication.txPacketBuffer[COM_DEVICE_ADDRESS_INDEX] = BROADCAST_ADDRESS; //store BROADCAST_ADDRESS
++communication.txPacketLength;
communication.txPacketBuffer[COM_TX_CODE_INDEX] = communication.txCode; //store tx code
++communication.txPacketLength;
for( i = COM_TX_DATA_START_INDEX ; i < communication.txPacketLength ; i++) //store data
{
communication.txPacketBuffer[i] = *txData;
txData++;
}
}
else
{
COM_reset();
}
break;
case PARSE_FAILURE:
{
communication.txPacketBuffer[COM_DEVICE_ADDRESS_INDEX] = DEVICE_ADDRESS; //store device address
++communication.txPacketLength;
communication.txPacketBuffer[COM_TX_CODE_INDEX] = communication.txCode; //store tx code
++communication.txPacketLength;
}
break;
default:
break;
}
communication.state = COM_IN_TX_DATA;
}
else
{
communication.rxPacketBuffer[communication.rxPacketIndex++]=uartData;
if( communication.rxPacketIndex >= RX_PACKET_SIZE)
{
communication.txPacketBuffer[COM_DEVICE_ADDRESS_INDEX] = DEVICE_ADDRESS; //store device address
++communication.txPacketLength;
communication.txPacketBuffer[COM_TX_CODE_INDEX] = COM_RESP_OVERRUN; //store tx code
++communication.txPacketLength;
communication.state = COM_IN_TX_DATA;
}
}
break;
case COM_IN_TX_DATA:
COM_txData();
COM_reset();
break;
default:
COM_reset();
break;
}
communication.prevState = communication.state;
}
void COM1_task(void)
{
volatile UINT8 uartData = 0,i;
communication[0].curAppTime = GetAppTime();
if(RCSTA1bits.OERR == 1)
{
RCSTA1bits.CREN = 0;
Delay10us(1);
RCSTA1bits.CREN = 1;
}
#ifdef UART2_ACTIVE
if(RCSTA2bits.OERR == 1)
{
RCSTA2bits.CREN = 0;
Delay10us(1);
RCSTA2bits.CREN = 1;
}
#endif
for(i = 0 ; i < ACTIVE_USARTS ; i++ )
{
if( communication[i].prevAppTime != communication[i].curAppTime)
{
if( communication[i].prevState == communication[i].state && (communication[i].state == COM_IN_PACKET_COLLECTION))
{
--communication[i].timeout ;
if( communication[i].timeout == 0)
{
COM1_restart();
return;
}
}
communication[i].prevAppTime = communication[i].curAppTime;
}
switch( communication[i].state)
{
case COM_START:
if( i == UART1)
{
if( UART1_hasData() == FALSE )
return;
uartData = UART1_read();
#ifdef PASS_THROUGH
UART2_write(uartData);
UART2_transmit();
#endif
}
else if( i == UART2)
{
if( UART2_hasData() == FALSE )
return;
uartData = UART2_read();
}
if( uartData == communication[i].rx_sop )
{
communication[i].rxPacketIndex = 0;
communication[i].state = COM_IN_PACKET_COLLECTION;
}
break;
case COM_IN_PACKET_COLLECTION:
if( i == UART1)
{
if( UART1_hasData() == FALSE )
return;
uartData = UART1_read();
#ifdef PASS_THROUGH
UART2_write(uartData);
UART2_transmit();
#endif
}
else if( i == UART2)
{
if( UART2_hasData() == FALSE )
return;
uartData = UART2_read();
}
if(uartData == communication[i].rx_eop )
{
UINT8 parseResult = 0;
COM_RESP_CODE txCode = COM_RESP_NONE;
UINT8 *txData ;
#ifdef __NO_CHECKSUM__
parseResult = PARSE_SUCCESS;
#else
parseResult = parse1Packet((&txCode), i); //parse packet
#endif
switch( parseResult)
{
case IGNORE:
COM1_reset();
return;
case PARSE_SUCCESS:
if( communication[i].callBack != 0 )
{
communication[i].txPacketLength =
communication[i].callBack(&communication[i].rxPacketBuffer[COM_RX_DATA_START_INDEX],
&communication[i].txCode,
&txData);
if(communication[i].txCode == COM_RESP_NONE )
{
COM1_reset();
return;
}
communication[i].txPacketBuffer[COM_DEVICE_ADDRESS_INDEX] = DEVICE_ADDRESS; //store device address
++communication[i].txPacketLength;
communication[i].txPacketBuffer[COM_TX_CODE_INDEX] = communication[i].txCode; //store tx code
++communication[i].txPacketLength;
for( i = COM_TX_DATA_START_INDEX ; i < communication[i].txPacketLength ; i++) //store data
{
communication[i].txPacketBuffer[i] = *txData;
txData++;
}
}
else
{
COM1_reset();
}
break;
case PARSE_FAILURE:
{
communication[i].txPacketBuffer[COM_DEVICE_ADDRESS_INDEX] = DEVICE_ADDRESS; //store device address
++communication[i].txPacketLength;
communication[i].txPacketBuffer[COM_TX_CODE_INDEX] = txCode; //store tx code
++communication[i].txPacketLength;
}
break;
default:
break;
}
communication[i].state = COM_IN_TX_DATA;
}
else
{
communication[i].rxPacketBuffer[communication[0].rxPacketIndex++]=uartData;
communication[i].timeout = 0;
if( communication[i].rxPacketIndex >= RX_PACKET_SIZE)
{
communication[i].txPacketBuffer[COM_DEVICE_ADDRESS_INDEX] = DEVICE_ADDRESS; //store device address
++communication[i].txPacketLength;
communication[i].txPacketBuffer[COM_TX_CODE_INDEX] = COM_RESP_OVERRUN; //store tx code
++communication[i].txPacketLength;
communication[i].state = COM_IN_TX_DATA;
}
}
break;
case COM_IN_TX_DATA:
COM_txData();
COM1_reset();
break;
default:
COM1_reset();
break;
}
communication[i].prevState = communication[i].state;
}
}