pwm.h File Reference

PWM service for XMEGA.

Copyright (c) 2012-2018 Microchip Technology Inc. and its subsidiaries.

#include "tc.h"

Data Structures
struct	pwm_config
	PWM configuration. More...

Typedefs
typedef void(*	pwm_callback_t )(void)
	Interrupt callback type. More...

Enumerations
enum	pwm_channel_t {   PWM_CH_A = 1,   PWM_CH_B = 2,   PWM_CH_C = 3,   PWM_CH_D = 4 }
	PWM compare channel index. More...
enum	pwm_clk_sel {   PWM_CLK_OFF = TC_CLKSEL_OFF_gc,   PWM_CLK_DIV1 = TC_CLKSEL_DIV1_gc,   PWM_CLK_DIV2 = TC_CLKSEL_DIV2_gc,   PWM_CLK_DIV4 = TC_CLKSEL_DIV4_gc,   PWM_CLK_DIV8 = TC_CLKSEL_DIV8_gc,   PWM_CLK_DIV64 = TC_CLKSEL_DIV64_gc,   PWM_CLK_DIV256 = TC_CLKSEL_DIV256_gc,   PWM_CLK_DIV1024 = TC_CLKSEL_DIV1024_gc }
	Valid clock source indexes. More...
enum	pwm_tc_t {   PWM_TCC0,   PWM_TCC1,   PWM_TCD0,   PWM_TCD1,   PWM_TCE0,   PWM_TCE1,   PWM_TCF0,   PWM_TCF1 }
	Valid timer/counters to use. More...

Functions
static void	pwm_disable (struct pwm_config *config)
	Disable the PWM timer. More...
void	pwm_init (struct pwm_config *config, enum pwm_tc_t tc, enum pwm_channel_t channel, uint16_t freq_hz)
	Initialize PWM configuration struct and set correct I/O pin to output. More...
static void	pwm_overflow_int_callback (struct pwm_config *config, pwm_callback_t callback)
	Callback function for timer overflow interrupts. More...
static void	pwm_set_duty_cycle_percent (struct pwm_config *config, uint8_t duty_cycle_scale)
	Function to set PWM duty cycle. More...
void	pwm_set_frequency (struct pwm_config *config, uint16_t freq_hz)
	Calculate TC settings from PWM frequency. More...
void	pwm_start (struct pwm_config *config, uint8_t duty_cycle_scale)
	Start a PWM channel. More...
static void	pwm_stop (struct pwm_config *config)
	Function that stops the PWM timer. More...
static void	pwm_timer_reset (struct pwm_config *config)
	Function that resets the PWM timer. More...