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port opening and createfile


Hi,

i'm trying to write a program to open the COM1 port and write data to
it.iused the function cyg_io_lookup().i tried specifying the device name in
many ways..
cyg_io_lookup("/dev/serial0",handle)
cyg_io_lookup("/dev/Ser0",handle)
cyg_io_lookup("/dev/ttyS0",handle)
cyg_io_lookup("COM1",handle)

cyg_io_lookup("//./COM1",handle)

but i cudn't open the port.Error -2 is shown..
Can anybody help me...

Also is there any function in eCos equiivalent to CREATEFILE()..CAn anybody
help me in this regard too...

Thanking in advance..
Paul.




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