/*
* Constructs a form for creating messages.
* Consists of one TextBox for every signal in the loaded message.
*/
private List <Signal> LoadSignals(int dlc)
{
Kvadblib.SignalHnd sh;
Kvadblib.Status status = Kvadblib.GetFirstSignal(msgHandle, out sh);
List <Signal> signals = new List <Signal>();
while (status == Kvadblib.Status.OK)
{
string name;
string unit;
double min, max, scale, offset, val;
//byte[] data = new byte[dlc];
//Construct the text for the label
status = Kvadblib.GetSignalName(sh, out name);
status = Kvadblib.GetSignalUnit(sh, out unit);
status = Kvadblib.GetSignalValueLimits(sh, out min, out max);
status = Kvadblib.GetSignalValueScaling(sh, out scale, out offset);
//status = Kvadblib.GetSignalValueFloat(sh, out val, data, dlc);
//Signal s = new Signal(name, max, min, min, scale);
Signal s = new Signal(name, max, min, min, scale);
signals.Add(s);
status = Kvadblib.GetNextSignal(msgHandle, out sh);
}
return(signals);
}
/*
* Loads the selected message's signals to construct a form
*/
public List <Signal> LoadSignalsById(int MsgId)
{
List <Signal> result = new List <Signal>();
Kvadblib.MessageHnd mh;
Kvadblib.Status status = Kvadblib.GetMsgById(dh, MsgId, out mh);
if (status == Kvadblib.Status.OK)
{
Kvadblib.MESSAGE f;
int dlc;
msgHandle = mh;
Kvadblib.GetMsgId(mh, out msgId, out f);
Kvadblib.GetMsgDlc(mh, out dlc);
msgId = ((MsgId & -2147483648) == 0) ? MsgId : MsgId ^ -2147483648;
msgFlags = ((MsgId & -2147483648) == 0) ? 0 : Canlib.canMSG_EXT;
hasMessage = true;
result = LoadSignals(dlc);
}
return(result);
}
/*
* Constructs a message from the form and sends it
* to the channel
*/
private bool SendMessage(int dlc, List <Signal> signals)
{
byte[] data = new byte[dlc];
Kvadblib.Status status = Kvadblib.Status.OK;
Kvadblib.SignalHnd sh;
bool error = false;
foreach (Signal s in signals)
{
double min, max;
status = Kvadblib.GetSignalByName(msgHandle, s.name, out sh);
if (status != Kvadblib.Status.OK)
{
error = true;
break;
}
Kvadblib.GetSignalValueLimits(sh, out min, out max);
status = Kvadblib.StoreSignalValuePhys(sh, data, dlc, s.Value);
//Check if the signal value was successfully stored and that it's in the correct interval
if (status != Kvadblib.Status.OK || s.Value < min || s.Value > max)
{
error = true;
break;
}
}
if (!error)
{
Canlib.canWriteWait(chanHandle, msgId, data, dlc, msgFlags, 50);
}
return(error);
}