neorv32_pwm.c File Reference

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

#include "neorv32.h"
#include "neorv32_pwm.h"

Functions
int	neorv32_pwm_available (void)
void	neorv32_pwm_setup (int prsc)
void	neorv32_pwm_disable (void)
void	neorv32_pwm_enable (void)
int	neorv32_pmw_get_num_channels (void)
void	neorv32_pwm_set (int channel, uint8_t dc)
uint8_t	neorv32_pwm_get (int channel)

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).

Function Documentation

neorv32_pmw_get_num_channels()

int neorv32_pmw_get_num_channels

(

void

)

Get number of implemented channels.

Warning

This function will override all duty cycle configuration registers.

Returns

Number of implemented 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_disable()

void neorv32_pwm_disable

(

void

)

Disable pulse width modulation controller.

neorv32_pwm_enable()

void neorv32_pwm_enable

(

void

)

Enable pulse width modulation controller.

neorv32_pwm_get()

uint8_t neorv32_pwm_get

(

int

channel

)

Get duty cycle from channel.

Parameters

[in]

channel

Channel select (0..11).

Returns

Duty cycle (8-bit, LSB-aligned) of channel 'channel'.

neorv32_pwm_set()

void neorv32_pwm_set	(	int	channel,
		uint8_t	dc )

Set duty cycle for channel.

Parameters

[in]	channel	Channel select (0..11).
[in]	dc	Duty cycle (8-bit, LSB-aligned).

neorv32_pwm_setup()

void neorv32_pwm_setup

(

int

prsc

)

Enable and configure pulse width modulation controller. The PWM control register bits are listed in NEORV32_PWM_CTRL_enum.

Parameters

[in]

prsc

Clock prescaler select (0..7). See NEORV32_CLOCK_PRSC_enum.