Hi, I have a linux serial port problem compiled by Cygwin on window, it runs fine if it connects a 9-pin serial cable and the device name is /dev/ttyS0 (it does not work with com1, I have to translate it to /dev/ttyS0). The problem is when I run the program in a PC without a physical 9-pin serial port on hardware:
(1) If there is no USB Serial adaptor connected, it still opens /dev/ttyS0 without any errors. Then, it sends data to that port, and timeout (does not work). (2) If I plug a USB-Serial adaptor and change the device name to /dev/ttyUSB0, it opens that port witout problem but cannot connect to the serial device. Any advice please. Thank you. Kind Regards, Jim -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
