Advantech SG-1103 Manuel d'utilisateur télécharger pdf (Page 27)

19 ROM-5420 User Manual

Chapter 3 Software Functionality

/dev/ttymxc1, UART: undefined, Port: 0x0000, IRQ: 59

/dev/ttymxc2, UART: undefined, Port: 0x0000, IRQ: 60

/dev/ttymxc3, UART: undefined, Port: 0x0000, IRQ: 61

/dev/ttymxc4, UART: undefined, Port: 0x0000, IRQ: 62

3.1.13.1 UART2 Testing

#stty -F /dev/ttymxc1 -echo

#cat /dev/ttymxc1 &

#echo hello > /dev/ttymxc1

Hello

3.1.13.2 UART3 Testing

#stty -F /dev/ttymxc2 -echo

#cat /dev/ttymxc2 &

#echo hello > /dev/ttymxc2

Hello

3.1.13.3 /UART3 Testing

#stty -F /dev/ttymxc3 -echo

#cat /dev/ttymxc3 &

#echo hello > /dev/ttymxc3

Hello

3.1.13.4 UART4 Testing

#stty -F /dev/ttymxc4 -echo

#cat /dev/ttymxc4 &

#echo hello > /dev/ttymxc4

Hello

3.1.14 Watchdog Timer Test

Step 1: Executing‘ wdt_driver_test.out ‘

#/unit_tests/wdt_driver_test.out

Usage: wdt_driver_test <timeout> <sleep> <test>

timeout: value in seconds to cause wdt timeout/reset

sleep: value in seconds to service the wdt

test: 0 - Service wdt with ioctl(), 1 - with write()

Step 2: Please try below command to set timeout as 10 seconds, system will reboot

after then.

#/unit_tests/wdt_driver_test.out 10 5 0

Starting wdt_driver (timeout: 10, sleep: 5, test: ioctl)

Trying to set timeout value=10 seconds

The actual timeout was set to 10 seconds

Now reading back -- The timeout is 10 seconds

Press [CTRL+C] then you should be able to see below result:

imx2-wdt imx2-wdt.0: Unexpected close: Expect reboot!

Then system will reboot in 10 seconds

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Advantech SG-1103 Manuel d'utilisateur Page 27

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