public void ReceiveCSPPacket(CSPPacket packet, CSPBus bus)
{
if (packet.ErrorDetected)
{
//Log received packet
EventLog.AddLog(new SimEvent(
"Module " + Name + " detected an error in received packet: " + packet.ToString() + ", the packet was discarded",
EventSeverity.ERROR));
}
else if (CommunicationDisabled)
{
//Log unreceived packet
EventLog.AddLog(new SimEvent(
"Module " + Name + " could not receive packet " + packet.ToString() + " because it has lost connection",
EventSeverity.ERROR));
}
else
{
//Log received packet
EventLog.AddLog(new SimEvent(
"Module " + Name + " received packet: " + packet.ToString(),
EventSeverity.INFO));
//Processing
if (packet.Command == ModuleCommand.PING)
{
//Respond to the ping with an equally sized packet over the same bus
SendCSPPacket(
bus,
(byte)packet.Header[CSPPacket.SourceAddress],
(byte)packet.Header[CSPPacket.SourcePort],
(byte)packet.Header[CSPPacket.DestinationPort],
(byte)Priority,
packet.DataSize,
ModuleCommand.SEND
);
}
}
}
public void SendCSPPacket(CSPBus bus, byte destination_addr, byte destination_port, byte source_port, byte priority, short dataSize, ModuleCommand command)
{
var rnd = new Random();
BitVector32 packetHeader = new BitVector32(0x00000000);
packetHeader[CSPPacket.SourceAddress] = randomSource ? ((byte)(rnd.Next(0, 32))) : Address;
packetHeader[CSPPacket.DestinationAddress] = randomDestination ? ((byte)(rnd.Next(0, 32))) : destination_addr;
packetHeader[CSPPacket.SourcePort] = randomSourcePort ? ((byte)(rnd.Next(0, 64))) : source_port;
packetHeader[CSPPacket.DestinationPort] = randomDestinationPort ? ((byte)(rnd.Next(0, 64))) : destination_port;
packetHeader[CSPPacket.Priority] = randomPriority ? ((byte)(rnd.Next(0, 4))) : priority;
CSPPacket packet = new CSPPacket(packetHeader, dataSize, command);
if (bus == null)
{
//Log failed send
EventLog.AddLog(new SimEvent(
"Module " + Name + " failed to send a packet because the target bus does not exist (check that the bus in your script exists in the simulation)",
EventSeverity.ERROR));
}
else if (CommunicationDisabled)
{
//Log failed send
EventLog.AddLog(new SimEvent(
"Module " + Name + " failed to send packet " + packet.ToString() + " because it has lost connection",
EventSeverity.ERROR));
}
else if (BusConnections.Contains(bus))
{
//We are assuming that all packets with wrong bits/data are considered in error because the
//probablity that the error is not detected is negligible
if (randomPriority)
{
packet.ErrorDetected = true;
//Log sending packet with random priority
EventLog.AddLog(new SimEvent(
"Module " + Name + " sends a packet containing a random priority: " + packet.ToString() + " to bus " + bus.Name,
EventSeverity.WARNING));
}
if (randomDestination)
{
packet.ErrorDetected = true;
//Log sending packet with random destination
EventLog.AddLog(new SimEvent(
"Module " + Name + " sends a packet containing a random destination address: " + packet.ToString() + " to bus " + bus.Name,
EventSeverity.WARNING));
}
if (randomSource)
{
packet.ErrorDetected = true;
//Log sending packet with random psource
EventLog.AddLog(new SimEvent(
"Module " + Name + " sends a packet containing a random source address: " + packet.ToString() + " to bus " + bus.Name,
EventSeverity.WARNING));
}
if (randomDestinationPort)
{
packet.ErrorDetected = true;
//Log sending packet with random psource
EventLog.AddLog(new SimEvent(
"Module " + Name + " sends a packet containing a random destination port: " + packet.ToString() + " to bus " + bus.Name,
EventSeverity.WARNING));
}
if (randomSourcePort)
{
packet.ErrorDetected = true;
//Log sending packet with random psource
EventLog.AddLog(new SimEvent(
"Module " + Name + " sends a packet containing a random source port: " + packet.ToString() + " to bus " + bus.Name,
EventSeverity.WARNING));
}
if (GarbageOutput)
{
packet.ErrorDetected = true;
}
bus.EnqueuePacket(packet);
if (!(randomPriority || randomDestination || randomSource || randomDestinationPort || randomSourcePort))
{
//Log sending normal packet
EventLog.AddLog(new SimEvent(
"Module " + Name + " sends packet " + packet.ToString() + " to bus " + bus.Name,
EventSeverity.INFO));
}
}
else
{
//Log failed send
EventLog.AddLog(new SimEvent(
"Module " + Name + " failed to send packet " + packet.ToString() + " because it is not connected to bus " + bus.Name,
EventSeverity.ERROR));
}
}
