pwm.c File Reference

PWM driver implementation for STM32F4 series (Cortex-M4). More...

#include "core/cortex-m4/pwm.h"
#include "core/cortex-m4/clock.h"
#include "core/cortex-m4/timer.h"
#include <stdint.h>

Include dependency graph for pwm.c:

Functions
void	hal_pwm_init (PWM_Handle *pwm, uint32_t frequency, float dutyCycle)
	Initialize PWM with a specified frequency and duty cycle.
void	hal_pwm_start (PWM_Handle *pwm)
	Start PWM output.
void	hal_pwm_stop (PWM_Handle *pwm)
	Stop PWM output.
void	hal_pwm_set_duty_cycle (PWM_Handle *pwm, float dutyCycle)
	Set PWM duty cycle.
void	hal_pwm_set_frequency (PWM_Handle *pwm, uint32_t frequency)
	Set PWM frequency.

Detailed Description

PWM driver implementation for STM32F4 series (Cortex-M4).

Function Documentation

hal_pwm_init()

void hal_pwm_init	(	PWM_Handle *	pwm,
		uint32_t	frequency,
		float	dutyCycle )

Initialize PWM with a specified frequency and duty cycle.

Initialize a PWM handle with the specified frequency and duty cycle.

This function configures the timer to generate a PWM signal on the specified channel with the given frequency and duty cycle.

Parameters

pwm	Pointer to the PWM handle structure.
frequency	Desired PWM frequency in Hz.
dutyCycle	Duty cycle as a fraction (0.0f - 1.0f).

hal_pwm_set_duty_cycle()

void hal_pwm_set_duty_cycle	(	PWM_Handle *	pwm,
		float	dutyCycle )

Set PWM duty cycle.

Set the PWM duty cycle.

Parameters

pwm	Pointer to the PWM handle structure.
dutyCycle	New duty cycle as a fraction (0.0f - 1.0f).

hal_pwm_set_frequency()

void hal_pwm_set_frequency	(	PWM_Handle *	pwm,
		uint32_t	frequency )

Set PWM frequency.

Set the PWM frequency.

Note

This function is not yet implemented.

Parameters

pwm	Pointer to the PWM handle structure.
frequency	Desired PWM frequency in Hz.

hal_pwm_start()

void hal_pwm_start

(

PWM_Handle *

pwm

)

Start PWM output.

Start PWM signal generation.

Parameters

pwm	Pointer to the PWM handle structure.

hal_pwm_stop()

void hal_pwm_stop

(

PWM_Handle *

pwm

)

Stop PWM output.

Stop PWM signal generation.

This function disables the timer channel and stops the timer.

Parameters

pwm	Pointer to the PWM handle structure.