neorv32_pwm.c File Reference

Pulse-Width Modulation Controller (PWM) HW driver source file. More...

#include <neorv32.h>

Functions
int	neorv32_pwm_available (void)
int	neorv32_pmw_get_num_channels (void)
void	neorv32_pwm_ch_enable (int channel)
void	neorv32_pwm_ch_disable (int channel)
void	neorv32_pwm_ch_set_polarity (int channel, bool inverted)
void	neorv32_pwm_ch_set_clock (int channel, int prsc, int cdiv)
void	neorv32_pwm_ch_set_duty (int channel, int duty)

Detailed Description

Pulse-Width Modulation Controller (PWM) HW driver source file.

Note

These functions should only be used if the PWM unit was synthesized (IO_PWM_EN = true).

See also

https://stnolting.github.io/neorv32/sw/files.html

Function Documentation

neorv32_pmw_get_num_channels()

int neorv32_pmw_get_num_channels

(

void

)

Get number of implemented PWM channels.

Warning

This function will override all channel configuration registers.

Returns

Number of implemented PWM channels.

neorv32_pwm_available()

int neorv32_pwm_available

(

void

)

Check if PWM unit was synthesized.

Returns

0 if PWM was not synthesized, 1 if PWM is available.

neorv32_pwm_ch_disable()

void neorv32_pwm_ch_disable

(

int

channel

)

Disable PWM channel.

Parameters

[in]

channel

Channel select (0..15).

neorv32_pwm_ch_enable()

void neorv32_pwm_ch_enable

(

int

channel

)

Enable PWM channel.

Parameters

[in]

channel

Channel select (0..15).

neorv32_pwm_ch_set_clock()

void neorv32_pwm_ch_set_clock	(	int	channel,
		int	prsc,
		int	cdiv )

Set PWM channel's clock configuration.

Parameters

[in]	channel	Channel select (0..15).
[in]	prsc	Coarse clock prescaler select (3-bit, LSB-aligned). See NEORV32_CLOCK_PRSC_enum.
[in]	cdiv	Fine clock divider value (10-bit, LSB-aligned).

neorv32_pwm_ch_set_duty()

void neorv32_pwm_ch_set_duty	(	int	channel,
		int	duty )

Set PWM channel's duty cycle.

Parameters

[in]	channel	Channel select (0..15).
[in]	duty	Duty cycle (8-bit, LSB-aligned).

neorv32_pwm_ch_set_polarity()

void neorv32_pwm_ch_set_polarity	(	int	channel,
		bool	inverted )

Set PWM channel's polarity configuration.

Parameters

[in]	channel	Channel select (0..15).
[in]	normal	polarity if false (default), inverted polarity if true