NAME

       pwmset - Configures a PWM's output waveform

SYNOPSIS

       pwmset [-c chipno] [-p pwmno] [-e] [-s sleepns] [-P periodlength] [-D dutylength] [-O dutyoffset] [-v]

Description

       pwmset's purpose is to configure a PWM device to emit a certain waveform. The PWM to program is specified
       by chipno and pwmno.  The waveform is described by periodlength, dutylength and dutyoffset.

Options

       -c chipno
              Each  PWM  chip  has  an  identifying  chip number.  pwmset configures a PWM line provided by chip
              number chipno.  chipno defaults to 0.

       -p pwmno
              Each PWM chip provides a number of PWM outputs.  pwmset configures the pwmnoth PWM output  of  the
              selected chip.  pwmno defaults to 0.

       -e     Requests that the specified waveform is implemented exactly. If this isn't possible, pwmset fails.

       -s sleepns
              It  is  unspecified what happens with the PWM's output once control over it is given up. After the
              waveform is programmed, let pwmset keep control over the PWM for sleepns nanoseconds. The  default
              value for sleepns is 5000000000, i.e. five seconds.

       -P periodlength
              periodlength in nanoseconds defines the length of the period of the waveform to be set.

       -D dutylength
              in nanoseconds defines the length of the active part of the waveform to be set.

       -O dutyoffset
              in  nanoseconds  defines  the  offset  between the start of a period and the start of the period's
              active part.

       -v     Emit some information during runtime.

SEE ALSO

       pwmround(1), pwmtestperf(1)

                                                                                                       PWMSET(1)