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Re: Interrupts and Serial Ports
OK. That's what I wanted to know. Thanks for the information.
Steve
Andrew Lunn wrote:
On Mon, Nov 08, 2004 at 03:39:16PM -0500, Steve Knowlton wrote:
Andrew,
Thanks for the response. I'm pretty sure I am using the full driver and
not the one for diagnostic output. I have the ports set up as /dev/ser0
and /dev/ser1 in the config
tool. I just need to know the correct way to read data from the port.
I have set up a handle to the port using the cyg_io_lookup function and
configuring
it to 9600 baud ( plus the other parameters such as stop bits etc ) and
set up
for non blocking reads. I am looping through the cyg_io_read function at
a rapid
rate but am still not reading anything. I know that polling is not the
best way to do
this but I don't know how to set up an interrupt driven scheme since the
driver is
already using the interrupt vector. Is there a way to hook onto this
interrupt vector
so that I can use this interrupt to signal the arrival of data at the port?
The serial driver will be doing all the interrupt handling for you. So
just do a blocking read and you will be unblocked when the data
arrives.
Andrew
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