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RE: Changing priority?
Can you describe the protocol in more detail?
What is tha data rate?
Is there a clock from ETRAX to trigger data transfer etc?
In the driver you could disable interrupts to make sure that
nothing else runs but that is a really bad idea if the
protcol is slow.
Behalf Of Johan Gustavsson
Sent: Wednesday, October 09, 2002 2:38 PM
Subject: Changing priority?
I'm writing a device driver which utilizes lpt1 in manual mode on the
etrax100LX-board. The data that the driver is supposed to read consists of
12 bits. The problem is that the data is sent in a serial form. I need to
ensure that the processor wont run off doing something while I'm reading
the data. Can I somehow change the priority of the driver to make sure
nothing will interfere with the read?