National Instruments PCI-232/4 Manual de usuario descargar pdf (Pagina 11)

one serial port. To change the baud base of your other serial ports, rerun

clockspeed with a different serial port number specified in the command

line. Enter the following to set the baud base. (In this example, high equals

a baud base of 460800 and low equals a baud base of 115200):

linux# setserial /dev/ttyS<

port number

> baud_base 115200

linux PCI-SERIAL#./clockspeed <

port number

> <

"high" or

"low"

For example, enter the following to select a baud base of 115200 for

/dev/ttyS4 and for /dev/ttyS5:

linux# setserial /dev/ttyS4 baud_base 115200

linux# setserial /dev/ttyS5 baud_base 115200

linux PCI-SERIAL# ./clockspeed 4 low

linux PCI-SERIAL# ./clockspeed 5 low

Enter the following to change the baud base back to 460800 for

/dev/ttyS4 and for /dev/ttyS5:

linux# setserial /dev/ttyS4 baud_base 460800

linux# setserial /dev/ttyS5 baud_base 460800

linux PCI-SERIAL# ./clockspeed 4 high

linux PCI-SERIAL# ./clockspeed 5 high

Test the Setup

After you connect the cables to the port (as shown in your PCI serial getting

started manual), run the

serialtest program (from the PCI-SERIAL

directory) to verify your setup. Make sure you specify two different ports

for the

serialtest program, as shown in the following:

linux PCI-SERIAL# ./serialtest <

receive port number

transmit port number

If the test is successful, it displays a SUCCESS message. If the test hangs,

press <ctrl-c> to exit the program, and continue to the next section,

Troubleshooting and Common Questions.

To test

/dev/ttyS4 and /dev/ttyS5, connect a cable between the

two ports and enter the following:

linux PCI-SERIAL# ./serialtest 4 5

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National Instruments PCI-232/4 Manual de usuario Pagina 11