Adafruit_ZeroTimer.h File Reference

#include "Arduino.h"
#include "wiring_private.h"

Go to the source code of this file.

Classes
class	Adafruit_ZeroTimer
	Class that stores state and functions for interacting with SAMD21 or SAMD51 Timer Counter. More...
struct	Adafruit_ZeroTimer::counter_8_bit
	Helper struct to hold state for 8-bit configured TC. More...
struct	Adafruit_ZeroTimer::counter_16_bit
	Helper struct to hold state for 16-bit configured TC. More...
struct	Adafruit_ZeroTimer::counter_32_bit
	Helper struct to hold state for 32-bit configured TC. More...
struct	Adafruit_ZeroTimer::pwm_channel
	Helper struct to hold state for a PWM output channel. More...

Macros
#define	NUM_PWM_CHANNELS   2
#define	NUM_CC_CHANNELS   2

Enumerations
enum	tc_clock_prescaler {   TC_CLOCK_PRESCALER_DIV1 = TC_CTRLA_PRESCALER(0), TC_CLOCK_PRESCALER_DIV2 = TC_CTRLA_PRESCALER(1), TC_CLOCK_PRESCALER_DIV4 = TC_CTRLA_PRESCALER(2), TC_CLOCK_PRESCALER_DIV8 = TC_CTRLA_PRESCALER(3),   TC_CLOCK_PRESCALER_DIV16 = TC_CTRLA_PRESCALER(4), TC_CLOCK_PRESCALER_DIV64 = TC_CTRLA_PRESCALER(5), TC_CLOCK_PRESCALER_DIV256 = TC_CTRLA_PRESCALER(6), TC_CLOCK_PRESCALER_DIV1024 = TC_CTRLA_PRESCALER(7) }
enum	tc_counter_size { TC_COUNTER_SIZE_8BIT = TC_CTRLA_MODE_COUNT8, TC_COUNTER_SIZE_16BIT = TC_CTRLA_MODE_COUNT16, TC_COUNTER_SIZE_32BIT = TC_CTRLA_MODE_COUNT32 }
enum	tc_wave_generation { TC_WAVE_GENERATION_NORMAL_FREQ = TC_CTRLA_WAVEGEN_NFRQ, TC_WAVE_GENERATION_MATCH_FREQ = TC_CTRLA_WAVEGEN_MFRQ, TC_WAVE_GENERATION_NORMAL_PWM = TC_CTRLA_WAVEGEN_NPWM, TC_WAVE_GENERATION_MATCH_PWM = TC_CTRLA_WAVEGEN_MPWM }
enum	tc_count_direction { TC_COUNT_DIRECTION_UP = 0, TC_COUNT_DIRECTION_DOWN }
enum	tc_callback {   TC_CALLBACK_OVERFLOW = 0, TC_CALLBACK_ERROR, TC_CALLBACK_CC_CHANNEL0, TC_CALLBACK_CC_CHANNEL1,   TC_CALLBACK_N }

Macro Definition Documentation

NUM_PWM_CHANNELS

#define NUM_PWM_CHANNELS   2

! How many PWM channels per TC

NUM_CC_CHANNELS

#define NUM_CC_CHANNELS   2

! How many CC channels per TC

Enumeration Type Documentation

tc_clock_prescaler

enum tc_clock_prescaler

! Prescale from the peripheral clock

Enumerator
TC_CLOCK_PRESCALER_DIV1	Divide clock by 1
TC_CLOCK_PRESCALER_DIV2	Divide clock by 2
TC_CLOCK_PRESCALER_DIV4	Divide clock by 4
TC_CLOCK_PRESCALER_DIV8	Divide clock by 8
TC_CLOCK_PRESCALER_DIV16	Divide clock by 16
TC_CLOCK_PRESCALER_DIV64	Divide clock by 64
TC_CLOCK_PRESCALER_DIV256	Divide clock by 256
TC_CLOCK_PRESCALER_DIV1024	Divide clock by 1024

tc_counter_size

enum tc_counter_size

! The counter size for this TC

Enumerator
TC_COUNTER_SIZE_8BIT	! The counter's maximum value is 0xFF, the period register is available to be used as top value
TC_COUNTER_SIZE_16BIT	! The counter's maximum value is 0xFFFF. There is no separate period register, to modify top one of the capture compare registers has to be used. This limits the amount of available channels.
TC_COUNTER_SIZE_32BIT	! The counter's maximum value is 0xFFFFFFFF. There is no separate period register, to modify top one of the capture compare registers has to be used. This limits the amount of available channels.

tc_wave_generation

enum tc_wave_generation

! The output pin PWM style

Enumerator
TC_WAVE_GENERATION_NORMAL_FREQ	! Top is maximum, except in 8-bit counter size where it is the PER register
TC_WAVE_GENERATION_MATCH_FREQ	! Top is CC0, except in 8-bit counter size where it is the PER register
TC_WAVE_GENERATION_NORMAL_PWM	! Top is maximum, except in 8-bit counter size where it is the PER register
TC_WAVE_GENERATION_MATCH_PWM	! Top is CC0, except in 8-bit counter size where it is the PER register

tc_count_direction

enum tc_count_direction

! Which way the counter goes

tc_callback

enum tc_callback

! What event triggers a callback