pwmout.c File Reference

PWM-Out controller for the mbed lpc1768 board. More...

#include <rtems/status-checks.h>
#include <bsp/pwmout.h>
#include <bsp/pwmout-defs.h>

Functions
rtems_status_code	pwm_init (const lpc176x_pin_number pin_number)
	Initializes the PWM output device and sets an initial period of 20000us. More...
rtems_status_code	pwm_period (const lpc176x_pin_number pin_number, const lpc176x_microseconds period)
	Sets a period for the PWM output. (Note that this changes the period for all the PWM outputs.) More...
rtems_status_code	pwm_pulsewidth (const lpc176x_pin_number pin_number, const lpc176x_microseconds pwidth)
	Sets a pulsewidth for the PWM output. More...

Detailed Description

PWM-Out controller for the mbed lpc1768 board.

Function Documentation

pwm_init()

rtems_status_code pwm_init

(

const lpc176x_pin_number

pin_number

)

Initializes the PWM output device and sets an initial period of 20000us.

Parameters

pin_number

The PWM output pin.

Returns

RTEMS_SUCCESSFULL if the PWM initialization was OK, RTEMS_INVALID_NUMBER for a wrong parameter.

pwm_period()

rtems_status_code pwm_period	(	const lpc176x_pin_number	pin_number,
		const lpc176x_microseconds	period
	)

Sets a period for the PWM output. (Note that this changes the period for all the PWM outputs.)

Parameters

pin_number	The pin whose period we want to change.
period	The desired period in microseconds.

Returns

RTEMS_SUCCESSFULL if the period's setting was OK, RTEMS_INVALID_NUMBER for a bad parameter.

pwm_pulsewidth()

rtems_status_code pwm_pulsewidth	(	const lpc176x_pin_number	pin_number,
		const lpc176x_microseconds	pwidth
	)

Sets a pulsewidth for the PWM output.

Parameters

pin_number	The pin whose pulsewidth we want to change.
pwidth	The desired pulsewidth in microseconds.

Returns

RTEMS_SUCCESSFULL if the pulsewidth's setting was OK, RTEMS_INVALID_NUMBER for a wrong parameter.