i8250 write fail - VxWorks

This is a discussion on i8250 write fail - VxWorks ; hi teacher, pc/104 tornado 2.0.2 ,i8250 uart ,I can receive ,but can not write() properly.when I use outbyte(0x3f8,...) everything is ok? why?...

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Thread: i8250 write fail

  1. i8250 write fail

    hi teacher,
    pc/104 tornado 2.0.2 ,i8250 uart ,I can receive ,but can not
    write() properly.when I use outbyte(0x3f8,...) everything is ok?
    why?


  2. Re: i8250 write fail

    write depend on interrupt,is it wrong?


  3. Re: i8250 write fail

    oh,I did not modify i8250sio.h i8250sio.c ,in CMOS it is 3F8/IRQ4
    2F8/IRQ3 ,it is matching with the sysserial.c, ....
    leo@allsotech.com wrote:
    > write depend on interrupt,is it wrong?



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