411 REFERENCE · Wikibooks
Alcor6L/eLua/pwm
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
This module contains functions for accessing the PWM (Pulse Width Modulation) modules of the eLua CPU.
Functions
pwm.setup
Setup the PWM modules.
frequency = pwm.setup( id, frequency, duty )
id - the ID of the PWM module.
frequency - the frequency of the PWM module (in Hz).
duty - the duty cycle of the PWM module given in percents. This must be an integer between 0 and 100. Depending on the hardware, some duty cycles (particularly 0 and 100) might not be achievable.
Returns:
frequency - The actual frequency set on the PWM module. Depending on the hardware, this might have a different value than the frequency argument.
pwm.start
Start the PWM signal on the given module.
pwm.start( id )
id - the ID of the PWM module.
Returns: nothing.
pwm.stop
Stop the PWM signal on the given module.
pwm.stop( id )
id - the ID of the PWM module.
Returns: nothing.
pwm.setclock
Set the base clock of the given PWM module.
clock = pwm.setclock( id, clock )
id - the ID of the PWM module.
clock - the desired base clock.
Returns:
clock - The actual base clock set on the PWM module. Depending on the hardware, this might have a different value than the clock argument.
pwm.getclock
Get the base clock of the given PWM module.
clock = pwm.getclock( id )
id - the ID of the PWM module.
Returns:
clock - The base clock of the PWM module.