public object getProperty(ccParameter param, int start, int num)
{
//send request message
routedMessage m = new routedMessage(node.address, new byte[] { 0x03, (byte)param.Index, (byte)start, (byte)num });
MessageSubscription sub = new MessageSubscription()
{
singleShot = true, sent = m
};
con.SendRoutedMessage(m, 0, sub);
//wait for reply
asyncWaitForReply(sub, defaultTimeout);
//decode message
param.parseValue(sub.reply);
return(param.Value);
}
private void asyncWaitForReply(MessageSubscription sub, int timeout)
{
// bit of a bodge but makes code so much simpler
// for .net4.5 replace with async method
DateTime start = DateTime.Now;
while (sub.reply == null)
{
System.Windows.Forms.Application.DoEvents();
if ((DateTime.Now - start).TotalMilliseconds >= timeout)
{
if (sub.singleShot)
{
sub.expired = true;
}
throw new Exception("Routed Object reply timeout");
}
}
}
public void setProperty(ccParameter param, int start, int num)
{
//assume value already set in local param
uint nBlocks = 1;
uint blockSize = 0;
if (param.Value.GetType().IsArray)
{
if (start >= param.ArrayLen)
{
throw (new Exception("Set routed Property index too big"));
}
num = Math.Min(num, (int)param.ArrayLen - start);
//calc number of blocks to send
blockSize = 32;
nBlocks = ((uint)num - 1) / blockSize + 1;
}
UInt32 startidx = (UInt32)start;
for (int i = 0; i < nBlocks; i++)
{
byte size = (byte)Math.Min(blockSize, start + num - startidx);
routedMessage m = new routedMessage(node.address, param.buildSetCmd(startidx, size));
MessageSubscription sub = new MessageSubscription()
{
singleShot = true, sent = m
};
con.SendRoutedMessage(m, 0, sub);
//wait for ack
asyncWaitForReply(sub, defaultTimeout);
//TODO check ack?
startidx += blockSize;
}
}
