void main( void ) {
unsigned char i = 0;
// Pins C6 and C7 are used for UART TX and RX respectively
InitEcoCar();
ReadAnalog(0);
J1939_Initialization( TRUE );
LATB = 0;
TRISB = 0;
TRISC = 0;
ShowBootupAnimation();
while (J1939_Flags.WaitingForAddressClaimContention)
J1939_Poll(5);
// CANbus is now initialized and we can now loop while we check
// our message receive buffer for new CANbus messages (where all received messages are put).
while (1) {
//Receive Messages
J1939_Poll(10);
while (RXQueueCount > 0) {
J1939_DequeueMessage( &Msg );
LATCbits.LATC5 = 1;
if ( J1939_Flags.ReceivedMessagesDropped )
J1939_Flags.ReceivedMessagesDropped = 0;
}
}
}
void main( void ) {
// Pins C6 and C7 are used for UART TX and RX respectively
InitEcoCar();
TRISCbits.RC4 = 0;
// Open USART:
OpenUSART( USART_TX_INT_OFF &
USART_RX_INT_OFF &
USART_ASYNCH_MODE &
USART_EIGHT_BIT &
USART_CONT_RX &
USART_BRGH_HIGH, 207 ); // 9600 bps baud rate
RCSTAbits.SPEN = 1; // Enable USART on pins C6, C7
BAUDCONbits.BRG16 = 0; // 8-bit BR Generator
J1939_Initialization( TRUE );
while (J1939_Flags.WaitingForAddressClaimContention)
J1939_Poll(5);
// CANbus is now initialized and we can now loop while we check
// our message receive buffer for new CANbus messages (where all received messages are put).
while (1) {
//Receive Messages
J1939_Poll(10);
while (RXQueueCount > 0) {
J1939_DequeueMessage( &Msg );
if ( Msg.GroupExtension >= 0xA0 && Msg.GroupExtension <= 0xA7 )
LATCbits.LATC4 = 1;
// Currently, only broadcast messages are repeated
// if( Msg.PDUFormat == PDU_BROADCAST )
putSerialData(Msg.GroupExtension, Msg.Data[0], Msg.Data[1]);
if ( J1939_Flags.ReceivedMessagesDropped )
J1939_Flags.ReceivedMessagesDropped = 0;
LATCbits.LATC4 = 0;
}
}
}
void main( void )
{
int i;
unsigned int counter;
InitEcoCar();
TRISCbits.TRISC1 = 1; // Listen on this pin for LCD
J1939_Initialization( TRUE );
// Open USART:
OpenUSART( USART_TX_INT_OFF &
USART_RX_INT_OFF &
USART_ASYNCH_MODE &
USART_EIGHT_BIT &
USART_CONT_RX &
USART_BRGH_HIGH, 34 );
// 34 = 57,600 bps at 32 MHz
BAUDCONbits.BRG16 = 0; // Enable 16-bit SPBRG (high speed!)
RCSTAbits.SPEN = 1; // Enable USART pin.
// Check for address collisions:
while (J1939_Flags.WaitingForAddressClaimContention)
J1939_Poll(5);
LATCbits.LATC0 = 1; // PICIN to LCD
while (1)
{
// Listen in for a signal from the master wanting our data.
J1939_Poll(10);
while (RXQueueCount > 0)
{
J1939_DequeueMessage( &Msg );
if (Msg.PDUFormat == PDU_BROADCAST && Msg.GroupExtension != CYCLE_COMPLETE && NEW_CYCLE == 1)
{
// Store data broadcasted by slaves
// MSB = Msg.Data[0], DataList[i][1]
// LSB = Msg.Data[1], DataList[i][2]
for(i=0;i<(sizeof(DataList)/sizeof(DataList[0]));i++)
{
if(DataList[i][0] == ERR_TIMEOUT && TimeoutLog == 0x00)
{
// Clear the timeout info that is currently stored in memory.
DataList[i][1] = 0x00;
DataList[i][2] = 0x00;
}
if (Msg.GroupExtension == DataList[i][0])
{
// Handle timeout logging:
if(Msg.GroupExtension == ERR_TIMEOUT)
{
TimeoutLog = Msg.Data[0]; // Set timeout log to current failing node.
}
else if(Msg.GroupExtension == TimeoutLog)
{
TimeoutLog = 0x00; // Obviously, the node is responding now.
}
DataList[i][1] = Msg.Data[0];
DataList[i][2] = Msg.Data[1];
}
}
}
else if (Msg.PDUFormat == PDU_BROADCAST && Msg.GroupExtension == CYCLE_COMPLETE && NEW_CYCLE == 1)
{
// Master is finished asking for data, send data now
// Transmit slave data
NEW_CYCLE = 0; // Reset cycle flag
LATCbits.LATC0 = 1; // Signal to LCD to start listening.
for(i=0;i<sizeof(DataList)/sizeof(DataList[0]);i++)
{
while(PORTCbits.RC1 == 0){ Nop(); }; // Wait until LCD is ready to receive serial data.
putSerialData(DataList[i][0], DataList[i][1], DataList[i][2]);
// Wait while LCD turns listening off and checks for screen events.
counter = 0;
while(PORTCbits.RC1 == 1)
{
counter++;
if(counter > 50000)
{
LATCbits.LATC4 = 1; // Turn timeout error LED on.
counter = 0;
break;
}
}
}
LATCbits.LATC0 = 0; // Signal to LCD to stop listening.
}
else if (Msg.PDUFormat == PDU_BROADCAST && Msg.GroupExtension == CYCLE_COMPLETE)
{
NEW_CYCLE = 1; // Receiving data from beginning of cycle
}
}
}
}
