conn3.c

关于devicenet的源代码。micorchip公司的

 *
 * Overview:        Process data for this connection.
 *
 * Note:            This event occurs when the buffer has successfully
 *					placed the requested data on the bus.
 ********************************************************************/
void _Conn3TxEvent(void)
{
	// Set flag indicating data has been placed on the bus
	_txFinFlags.bits.strobe = 1;
	
	// Notify the application
	UsrConnTxDataEvent(3);
}





/*********************************************************************
 * Function:        unsigned char _Conn3ExplicitEvent(void)
 *
 * PreCondition:    none
 *
 * Input:       	none	
 *                  
 * Output:      	unsigned char success of the request
 *
 * Side Effects:    none
 *
 * Overview:        Handle explicit messaging for this instance
 *
 * Note:            None
 ********************************************************************/
unsigned char _Conn3ExplicitEvent(void)
{
	switch(mRouteGetServiceID())
   	{
   		case SRVS_GET_ATTRIB_SINGLE:
   			return (_Conn3GetAttrib());
   		case SRVS_SET_ATTRIB_SINGLE:
   			return (_Conn3SetAttrib());
   	   	default:
   			mRoutePutError(ERR_SERVICE_NOT_SUPPORTED);
   			break;
   	}
		
	return (1);
}


/*********************************************************************
 * Function:        unsigned char _Conn3GetAttrib()
 *
 * PreCondition:    none
 *
 * Input:       	none
 *                  
 * Output:      	unsigned char success of the request
 *
 * Side Effects:    none
 *
 * Overview:        Handle explicit messaging
 *
 * Note:            None
 ********************************************************************/
unsigned char _Conn3GetAttrib(void)
{
	UINT	work;
	USINT 	i;

	switch (mRouteGetAttributeID())
	{
		case	_ATTRIB_STATE:
			mRoutePutByte(uConn3.attrib.state);
			break;
		case	_ATTRIB_INSTANCE_TYPE:
			mRoutePutByte(1);
			break;
		case	_ATTRIB_CLASS_TRIGGER:
			mRoutePutByte(uConn3.attrib.transportClass.byte);
			break;
		case 	_ATTRIB_PRODUCED_CID:
			work.word = (uConn3.attrib.produced_cid.word >> 5);
			mRoutePutByte(work.bytes.LSB);
			mRoutePutByte(work.bytes.MSB);
			break;
		case	_ATTRIB_CONSUMED_CID:
			work.word = (uConn3.attrib.consumed_cid.word >> 5);
			mRoutePutByte(work.bytes.LSB);
			mRoutePutByte(work.bytes.MSB);
			break;	
		case 	_ATTRIB_INITIAL_COMM_CHAR:
			mRoutePutByte(0x02);
			break;
		case	_ATTRIB_PRODUCED_CONN_SIZE:
			mRoutePutByte(uConn3.attrib.produced_con_size.bytes.LSB);
			mRoutePutByte(uConn3.attrib.produced_con_size.bytes.MSB);
			break;
		case	_ATTRIB_CONSUMED_CONN_SIZE:
			mRoutePutByte(uConn3.attrib.consumed_con_size.bytes.LSB);
			mRoutePutByte(uConn3.attrib.consumed_con_size.bytes.MSB);
			break;
		case	_ATTRIB_EXPECTED_RATE:
			mRoutePutByte(uConn3.attrib.expected_packet_rate.bytes.LSB);
			mRoutePutByte(uConn3.attrib.expected_packet_rate.bytes.MSB);
			break;
		case	_ATTRIB_WDT_ACTION:
			mRoutePutByte(0x00);
			break;
		case	_ATTRIB_PRODUCED_CONN_PATH_LEN:
			mRoutePutByte(uConn3.attrib.produced_path_len.bytes.LSB);
			mRoutePutByte(uConn3.attrib.produced_path_len.bytes.MSB);
			break;
		case	_ATTRIB_PRODUCED_CONN_PATH:
			if (mRouteOutLen() > uConn3.attrib.produced_path_len.bytes.LSB)  
			{
				for (i = 0; i < (uConn3.attrib.produced_path_len.bytes.LSB); i++)
				{
					mRoutePutByte(uConn3.attrib.produced_path[i]);
				}
			}
			else
			{
   				mRoutePutError(ERR_REPLY_TOO_LARGE);
			}
			break;
		case	_ATTRIB_CONSUMED_CONN_PATH_LEN:
			mRoutePutByte(uConn3.attrib.consumed_path_len.bytes.LSB);
			mRoutePutByte(uConn3.attrib.consumed_path_len.bytes.MSB);
			break;
		case	_ATTRIB_CONSUMED_CONN_PATH:
			if (mRouteOutLen() > uConn3.attrib.consumed_path_len.bytes.LSB)  
			{
				for (i = 0; i < (uConn3.attrib.consumed_path_len.bytes.LSB); i++)
				{
					mRoutePutByte(uConn3.attrib.consumed_path[i]);
				}
			}
			else
			{
				mRoutePutError(ERR_REPLY_TOO_LARGE);
			}
			break;
		default:
			mRoutePutError(ERR_ATTRIB_NOT_SUPPORTED);
			break;
	}
	return(1);
}




/*********************************************************************
 * Function:        unsigned char _Conn3SetAttrib(void)
 *
 * PreCondition:    none
 *
 * Input:       	none
 *                  
 * Output:      	unsigned char success of the request
 *
 * Side Effects:    none
 *
 * Overview:        Handle explicit messaging
 *
 * Note:            None
 ********************************************************************/
unsigned char _Conn3SetAttrib(void)
{
	unsigned char 	work;
	
	// Ignore the first byte (it is actually the attribute ID) 
	mRouteGetByte();

	switch (mRouteGetAttributeID())
	{	
		case	_ATTRIB_EXPECTED_RATE:
			// Continue only if there is sufficient data
			if (mRouteTestValidInputDataLen(2))
			{
				if (uConn3.attrib.state == _STATE_CONFIGURING)
				{ 
					uConn3.attrib.state = _STATE_ESTABLISHED;
					_establishFlags.bits.strobe = 1;
				}

				// Read in the requested packet rate
				uConn3.attrib.expected_packet_rate.bytes.LSB = mRouteGetByte();
				uConn3.attrib.expected_packet_rate.bytes.MSB = mRouteGetByte();
	
				// Get the ls bits
				work = uConn3.attrib.expected_packet_rate.bytes.LSB & (TICK_RESOLUTION - 1);
	
				// Remove the ls bits from desired resolution
				uConn3.attrib.expected_packet_rate.bytes.LSB &= (~(TICK_RESOLUTION - 1));
				
				// Round up if necessary
				if (work) uConn3.attrib.expected_packet_rate.word += (TICK_RESOLUTION);
	
				// Return the value actually used
				mRoutePutByte(uConn3.attrib.expected_packet_rate.bytes.LSB);
				mRoutePutByte(uConn3.attrib.expected_packet_rate.bytes.MSB);
	
				// Set the timer 4x (section 5-4.4.2)
				uConn3.timer.word = uConn3.attrib.expected_packet_rate.word << 2; 
			}	
			break;
		case	_ATTRIB_CLASS_TRIGGER:
			if (uConn3.attrib.state == _STATE_CONFIGURING)
			{
				if (mRouteTestValidInputDataLen(1))
				{ 
					// To be handled by the app
					UsrConnSetAttribEvent(3);
				}
			}
			else
			{
				mRoutePutError(ERR_OBJECT_STATE_CONFLICT);
			}
			break;
		case	_ATTRIB_PRODUCED_CONN_PATH:
			if (uConn3.attrib.state == _STATE_CONFIGURING)
			{
				if (mRouteTestValidInputDataLen(uConn3.attrib.produced_path_len.bytes.LSB))
				{
					// To be handled by the app
					UsrConnSetAttribEvent(3);
				}
			}
			else
			{
				mRoutePutError(ERR_OBJECT_STATE_CONFLICT);
			}
			break;
		case	_ATTRIB_CONSUMED_CONN_PATH:
			if (uConn3.attrib.state == _STATE_CONFIGURING)
			{
				if (mRouteTestValidInputDataLen(uConn3.attrib.consumed_path_len.bytes.LSB))
				{
					// To be handled by the app
					UsrConnSetAttribEvent(3);
				}
			}
			else
			{
				mRoutePutError(ERR_OBJECT_STATE_CONFLICT);
			}
			break;
		case	_ATTRIB_PRODUCED_CONN_SIZE:
			if (uConn2.attrib.state == _STATE_CONFIGURING)
			{
				if (mRouteTestValidInputDataLen(2))
				{
					// To be handled by the app
					UsrConnSetAttribEvent(3);
				}
			}
			else
			{
				mRoutePutError(ERR_OBJECT_STATE_CONFLICT);
			}
			break;
		case	_ATTRIB_WDT_ACTION:
		case	_ATTRIB_CONSUMED_CONN_SIZE:
		case	_ATTRIB_STATE:
		case	_ATTRIB_INSTANCE_TYPE:
		case 	_ATTRIB_PRODUCED_CID:
		case	_ATTRIB_CONSUMED_CID:
		case 	_ATTRIB_INITIAL_COMM_CHAR:
		case	_ATTRIB_PRODUCED_CONN_PATH_LEN:
		case	_ATTRIB_CONSUMED_CONN_PATH_LEN:
			mRoutePutError(ERR_ATTRIB_NOT_SETTABLE);
			break;
			
		default:
			mRoutePutError(ERR_ATTRIB_NOT_SUPPORTED);
			break;
	}
	return(1);
}

// SUPPORT_BIT_STROBED
#endif