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30 .Nd configure pwm controller
55 utility can be used to configure pwm controllers.
57 The options are as follow:
58 .Bl -tag -width "-c channel"
60 Channel number to operate on.
66 If an unqualified name is provided,
68 is automatically prepended.
70 Enable the pwm channel.
72 Disable the pwm channel.
74 Show the configuration of the pwm channel.
76 Configure the period (in nanoseconds) of the pwm channel
78 Configure the duty (in nanoseconds or percentage) of the pwm channel.
79 Duty is the portion of the
81 during which the signal is asserted.
86 Show the configuration of the pwm channel:
88 pwm -f /dev/pwm/pwmc0.1 -C
91 Configure a 50000 ns period and a 25000 ns duty cycle:
93 pwm -f pwmc1.1 -p 50000 -d 25000
96 Configure a 50% duty cycle on the device and channel which
102 pwm -f backlight -d 50%
117 utility and this manual page were written by
118 .An Emmanuel Vadot Aq Mt manu@FreeBSD.org .