public bool CloseBus(BusInfo busInfo)
{
lock (this.busInstances)
{
IBus bus = this.TryGetCreatedBus(busInfo);
if (bus == null)
{
return(false);
}
bus.Close();
while (busInfo.Parent != null)
{
bus = this.TryGetCreatedBus(busInfo.Parent);
if (bus == null)
{
break;
}
//该总线被其它设备所占用
if (this.busInstances.Keys.Any(obj => MatchBusWithParent(obj, busInfo)))
{
break;
}
bus.Close();
busInfo = busInfo.Parent;
}
return(true);
}
}
public int Read(BusInfo busInfo, byte[] readBuf, int maxReadLen = 0)
{
IBus bus = this.CreateBusFromBusInfo(busInfo, true);
try
{
return(bus.Read(readBuf, maxReadLen));
}
finally
{
if (bus != null && bus.State != BusState.Closed && busInfo.CacheResource == false)
{
bus.Close();
}
}
}
public void Write(BusInfo busInfo, byte[] writeBuf, int offset, int len)
{
IBus bus = this.CreateBusFromBusInfo(busInfo, true);
try
{
bus.Write(writeBuf, offset, len);
}
finally
{
if (bus != null && bus.State != BusState.Closed && busInfo.CacheResource == false)
{
bus.Close();
}
}
}
public int WriteAndRead(BusInfo busInfo, byte[] writeBuf, int offset, int len, byte[] readBuf, int maxReadLen = 0, int waitTimeBeforeRead = 0)
{
IBus bus = this.CreateBusFromBusInfo(busInfo, true);
try
{
bus.Write(writeBuf, offset, len);
if (waitTimeBeforeRead > 0)
{
Thread.Sleep(waitTimeBeforeRead);
}
return(bus.Read(readBuf, maxReadLen));
}
finally
{
if (bus != null && bus.State != BusState.Closed && busInfo.CacheResource == false)
{
bus.Close();
}
}
}
