i have medical device connected to PC through USB
i checked out the device and found out the it uses FT232 converter.
Question is how to get data transmitted between computer and device?
Is there any possibility to connect second FT232 in parallel with the one inside the device?
can i connect two FT232 on parallel and got the same port in computer?
please help.
No you can't connect USB devices in parallel to the bus. You'll need an USB hub.
You can check the commercially available dual RS232-to-USB adapters. They either use a dual channel FT2232 (which would be also my suggestion for the problem) or two FT232 and a hub. Also separate EEPROMs are required with FT232.
you are correct!
if I plug the three TTL-232R-3V3 devices into a USB hub I get three COM ports as expected.
Is this what is required or have we got a long way from the original question?
Thx For every body posted
Ok. i can't connect as schematic, therefor hardware solutions to spy would be useless, So i should turn to software solutions to spy ft232 virtual com port.
As mentioned above , you suggested me a usb sniffer software and i think it works, but what i need is C++ code, not exe file
any one can supply me C++ code to spy already opened com port? in other way can i write TWO c++ applications that use the same com port?
but what i need is C++ code, not exe file any one can supply me C++ code to spy already opened com port? in other way can i write TWO c++ applications that use the same com port?
If the FT232 uses a virtual COM port interface, it can be sniffed also at serial port level. PORTMON is popular tool that does it. But interfacing it in your own code requires profound knowledge of Windows driver programming.
You surely can't access a Windows COM port by two applications.