table of contents
| PWMROUND(1) | General Commands Manual | PWMROUND(1) |
NAME¶
pwmround - Adapt a waveform to a PWM's actual capabilities
SYNOPSIS¶
pwmround |
[-c chipno] [-p pwmno] [-P periodlength] [-D dutylength] [-O dutyoffset] [-v] |
Description¶
Typically a PWM cannot implement each and every waveform. pwmround queries the PWM output specified by chipno and pwmno what the waveform will be actually implemented for a given request.
The waveform to be adapted 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.
- -P periodlength
- periodlength in nanoseconds defines the length of the period of the waveform to be adapted to the PWM's capabilities.
- -D dutylength
- in nanoseconds defines the length of the active part of the waveform to be adapted to the PWM's capabilities.
- -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.