ORANGE Pi 3B User Manual

range Pi User Manual Copyright reserved by Shenzhen Xunlong Software Co., Ltd
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a. Test UART3
root@orangepi:~/wiringOP-Python/examples# python3 serialTest.py --device \
"/dev/ttyS3"
Out: 0: -> 0
Out: 1: -> 1
Out: 2: -> 2
Out: 3: -> 3
Out: 4:^C
exit
b. Test UART7
root@orangepi:~/wiringOP-Python/examples# python3 serialTest.py --device \
"/dev/ttyS7"
Out: 0: -> 0
Out: 1: -> 1
Out: 2: -> 2
Out: 3: -> 3
Out: 4:^C
exit
c. Test UART9
root@orangepi:~/wiringOP-Python/examples# python3 serialTest.py --device \
"/dev/ttyS9"
Out: 0: -> 0
Out: 1: -> 1
Out: 2: -> 2
Out: 3: -> 3
Out: 4:^C
exit
3.18. Hardware watch the door dog test
The watchdog_test program is pre-installed in the Linux system released by Orange
Pi, which can be tested directly.

ORANGE Pi 3B Specifications

General

Ethernet	Gigabit Ethernet
Bluetooth	Bluetooth 5.0
USB	2x USB 2.0, 1x USB 3.0
Power Supply	5V/3A via USB-C
RAM	4GB LPDDR4
Storage	MicroSD card slot
Wireless	Wi-Fi 5 (802.11ac)
Video Output	HDMI 2.0
Operating System	Android