Alcor6L/PicoLisp/pwm
< Alcor6L
This module contains functions for accessing the PWM (Pulse Width Modulation) modules of the Alcor6L CPU.
Functions edit
pwm-setup edit
Setup the PWM modules.
(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 edit
Start the PWM signal on the given module.
(pwm-start id)
- id - the ID of the PWM module.
Returns: NIL.
pwm-stop edit
Stop the PWM signal on the given module.
(pwm-stop id)
- id - the ID of the PWM module.
Returns: NIL.
pwm-setclock edit
Set the base clock of the given PWM module.
(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 edit
Get the base clock of the given PWM module.
(pwm-getclock id)
- id - the ID of the PWM module.
Returns:
- clock - The base clock of the PWM module.