National Instruments and PCI-485/4 Isolated 用户手册

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Enter the following to recompile 

interrupt_enable.c

 and rerun 

intenable

. Also, the source code for 

intenable

 is available for editing 

and viewing at 

interrupt_enable.c

 provided in the 

PCI-SERIAL

 

directory.

gcc interrupt_enable.c -o intenable

./intenable <

PCI memory address found 

in lspci>

Error Code

intenable: ERROR: Initial value of interrupt enable register 

Solution

Make sure that you are providing the program with the correct memory address. 
Enter the following to check for the memory address:

 

lspci -v -n -d 1093:*

00:0a.0 Class ff00: 1093:d150 (rev 01)

Flags: medium devsel, IRQ 11

Enter this address! -->Memory at 000dff80

 

(low-1M, 

non-prefetchable)

I/O ports at dff0

I/O ports at dfe0

I/O ports at dfa8

I/O ports at dfa0

 .

/intenable dff80

 

Error Code

rs485: ERROR: Couldn't write to /dev/ttyS<

Solution

Make sure the device was configured correctly in 

setserial

. Enter the 

following:

 

setserial -gv /dev/ttyS<

port number>

If the port listing does not match the one found by 

lspci

, reconfigure the device 

by entering the following:

linux# setserial /dev/ttyS<

port number> uart 16550a port 

<

port> irq <irq> ^fourport