> On Thu, 9 Jul 2009 08:40:18 -0500, Shine Jose <shinejos...@gmail.com> wrote:
> I achieve this by creating a separate worker thread to poll > the serial port for arrival of data and then updating the > required widget in main thread of program. For polling the > serial port, I create a separate instance of pySerial object. > However, I am unable to read any data in the worker thread. > Can the reason for this be 2 instances of pySerial objects > being connected to serial port. Yes. > The reason I had this doubt was because Serial.Connect() in > the worker thread did not throw any exception & isOpen() > method returns true. Under Unix, you are allowed to open a device or file as many times as you want (there are some common cases where there is a very useful thing to do). However, for something like a serial port, there's only one copy of each received data byte. Depending on exactly how you structure your code, the incoming data may be divided up amongst multiple readers, or one particular reader may get all of it. -- Grant Edwards grante Yow! I joined scientology at at a garage sale!! visi.com -- http://mail.python.org/mailman/listinfo/python-list