On Thu, 2 May 2002, antonelloderosa@inwind.it wrote:
> Hallo,
> I would find the way of controlling the serial port at kernel
> level; more precisely I want to set the DTR or RTS pin of the serial
> port whenever my host send or receive an udp packet.
>
> Can you help me?
>
> Please answer me as soon as possible!!!
>
> Thanks a lot !!
If this is just a hack and you don't care if it screws up
somebody else using the UART, just....
#define BASE 0x3f8 // For first UART
#define MCR 0x3fc
#define DTR 0x01
#define RTS 0x02
... read/write directly to the MCR port, saving the bits you don't
want to change... You use the outb(value, port); and inb(port);
instructions for ports.
Cheers,
Dick Johnson
Penguin : Linux version 2.4.18 on an i686 machine (797.90 BogoMips).
Windows-2000/Professional isn't.
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This archive was generated by hypermail 2b29 : Tue May 07 2002 - 22:00:13 EST