using serial interface

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How can I access the serial interface from within my module.
I don't want to write a new driver for the uart. I just need to send and
receive things from the serial interface. and have my module independent of
the uart.

equivalent user space actions would bee 
cat /dev/ttyS1
echo 123 > /dev/ttyS1


-- 
Martin Hansen
Student at SDU Sønderborg. www.sdu.dk
Writing final project at Danfoss drives. www.danfossdrives.com

Tlf: 74 88 54 62
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