19
ROM-3420 User Manual
Chapter 3
S
oftware
Functionality
Hello
3.1.13.2
ttymxc3 Testing
#stty
‐
F
/dev/ttymxc3
‐
echo
#cat
/dev/ttymxc3
&
#echo
Hello
>
/dev/ttymxc3
Hello
3.1.13.3
/ttymxc4 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
3.1.15
Audio Test
Execute the following commands to run the Audio demo application on ROM-3420.
#cd
/unit_tests
#aplay
audio8k16S.wav
Then you can hear the music from speaker/head-sets.
3.1.16
Photo Demo Test
Execute the following commands to run the Photo demo application on ROM-3420.
#cd
/tools
#./fbv
Advantech.jpg
Then you can see the photo demo on the default display screen.
