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I am having trouble reading from the serial port on /dev/ttyS0. I can open the port, set attributes, and write data, but I never receive anything on a read. I have some older executables and an older cygwin dll (1.5.19), and these still work (running in a DOS shell). The old executables don't work with the new dll, and they also don't work after I recompile. I can send and receive data between the two computers using hyperterminal, so I know that the hardware is ok. I have checked the serial port settings with stty after my program runs and after running hyperterminal, and they are the same. I have attached a test program. I have only one serial port, so I either use a serial loopback connector, or connect to another computer through a null modem cable and use hyperterminal. Thanks in advace for your help. Patrick
Attachment:
cygcheck.out
Description: cygcheck.out
Attachment:
tryser.c
Description: tryser.c
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