twr_pwm

Driver for PWM generation. More...

Enumerations
enum	twr_pwm_channel_t {   TWR_PWM_P0 = TWR_GPIO_P0 ,   TWR_PWM_P1 = TWR_GPIO_P1 ,   TWR_PWM_P2 = TWR_GPIO_P2 ,   TWR_PWM_P3 = TWR_GPIO_P3 ,   TWR_PWM_P6 = TWR_GPIO_P6 ,   TWR_PWM_P7 = TWR_GPIO_P7 ,   TWR_PWM_P8 = TWR_GPIO_P8 ,   TWR_PWM_P12 = TWR_GPIO_P12 ,   TWR_PWM_P14 = TWR_GPIO_P14 }
	PWM channels.
enum	twr_pwm_tim_t {   TWR_PWM_TIM2_P0_P1_P2_P3 ,   TWR_PWM_TIM3_P6_P7_P8 ,   TWR_PWM_TIM21_P12_P14 }
	PWM timers. More...

Functions
void	twr_pwm_init (twr_pwm_channel_t channel)
	Initialize PWM timers based on GPIO pin. More...
void	twr_pwm_enable (twr_pwm_channel_t channel)
	Enable PWM output on GPIO pin. More...
void	twr_pwm_disable (twr_pwm_channel_t channel)
	Disable PWM output on GPIO pin. More...
void	twr_pwm_set (twr_pwm_channel_t channel, uint16_t pwm_value)
	Set PWM value for GPIO pin. More...
void	twr_pwm_tim_configure (twr_pwm_tim_t tim, uint32_t resolution_us, uint32_t period_cycles)
	Reconfigure TIM3. More...

Detailed Description

Driver for PWM generation.

Enumeration Type Documentation

twr_pwm_tim_t

enum twr_pwm_tim_t

PWM timers.

Each timer controls a group of output PWM channels. The change of the specific timer affects also the other related PWM channels.

Definition at line 33 of file twr_pwm.h.

Function Documentation

twr_pwm_disable()

void twr_pwm_disable

(

twr_pwm_channel_t

channel

)

Disable PWM output on GPIO pin.

Parameters

[channel]

channel GPIO channel

Definition at line 188 of file twr_pwm.c.

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twr_pwm_enable()

void twr_pwm_enable

(

twr_pwm_channel_t

channel

)

Enable PWM output on GPIO pin.

Parameters

[channel]

channel GPIO channel

Definition at line 174 of file twr_pwm.c.

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twr_pwm_init()

void twr_pwm_init

(

twr_pwm_channel_t

channel

)

Initialize PWM timers based on GPIO pin.

Parameters

[in]

channel

GPIO channel

Definition at line 141 of file twr_pwm.c.

twr_pwm_set()

void twr_pwm_set	(	twr_pwm_channel_t	channel,
		uint16_t	pwm_value
	)

Set PWM value for GPIO pin.

Parameters

[channel]	channel GPIO channel
[pwm_value]	PWM duty value 0-255 in default configuration

Definition at line 193 of file twr_pwm.c.

Referenced by twr_servo_set_angle(), and twr_servo_set_microseconds().

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twr_pwm_tim_configure()

void twr_pwm_tim_configure	(	twr_pwm_tim_t	tim,
		uint32_t	resolution_us,
		uint32_t	period_cycles
	)

Reconfigure TIM3.

Parameters

[resolution_us]	Set resolution of the timer in microseconds
[period_cycles]	Set number of periods of one cycle

Definition at line 115 of file twr_pwm.c.