range Pi User Manual Copyright reserved by Shenzhen Xunlong Software Co., Ltd
196
Out: 0: -> 0
Out: 1: -> 1
Out: 2: -> 2
Out: 3: -> 3
Out: 4: -> 4
Out: 5: -> 5^C
c. Test UART9
orangepi@orangepi:~$ sudo gpio serial /dev/ttyS9
[sudo] password for orangepi: #Enter the password here.
Out: 0: -> 0
Out: 1: -> 1
Out: 2: -> 2
Out: 3: -> 3
Out: 4: -> 4
Out: 5: -> 5^C
3.16.6. PWM test method
1) As can be seen from the table below, Orange Pi 3B has two pwm channels available
pwm11 and pwm15
2) In the linux system, the PWM in the 40 pin is turned off by default, and it needs to be
turned on manually before it can be used. The detailed steps are as follows:
a. First run orangepi-config, ordinary users remember to add sudo permission
orangepi@orangepi:~$ sudo orangepi-config
b. Then select System