ramp2_dma.c File Reference

SAM D21 TCC RAMP2 DMA operation with circular buffer Example Application.

Copyright (c) 2015-2018 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>
#include "conf_example.h"

Macros
#define	TRIGGER_FLAGS   (TCC_INTFLAG_OVF)

Functions
static	COMPILER_ALIGNED (16)
static void	config_dma_for_tcc_ramp2a (void)
void	config_ramp2_dma (void)
static void	configure_tcc_ramp2a_mode (void)
static void	configure_trigger (void)
void	trigger_generation (void)

Variables
static enum status_code	stat = STATUS_OK
static struct tcc_module	tcc_instance
static struct dma_resource	tcc_ramp_a_dma_resource

#define TRIGGER_FLAGS   (TCC_INTFLAG_OVF)

Referenced by trigger_generation().

static COMPILER_ALIGNED ( 16  )

static

static void config_dma_for_tcc_ramp2a ( void  )

static

References dma_descriptor_config::beat_size, dma_descriptor_config::block_transfer_count, dma_descriptor_config::destination_address, dma_add_descriptor(), dma_allocate(), DMA_BEAT_SIZE_WORD, dma_descriptor_create(), dma_descriptor_get_config_defaults(), dma_get_config_defaults(), dma_start_transfer_job(), DMA_TRIGGER_ACTION_BEAT, dma_descriptor_config::dst_increment_enable, dma_resource_config::peripheral_trigger, dma_descriptor_config::source_address, dma_descriptor_config::src_increment_enable, tcc_ramp_a_dma_resource, and dma_resource_config::trigger_action.

Referenced by config_ramp2_dma().

void config_ramp2_dma

(

void

)

References config_dma_for_tcc_ramp2a(), configure_tcc_ramp2a_mode(), and configure_trigger().

Referenced by main().

static void configure_tcc_ramp2a_mode ( void  )

static

References tcc_counter_config::clock_prescaler, tcc_counter_config::clock_source, tcc_config::compare, tcc_config::counter, tcc_pins_config::enable_wave_out_pin, tcc_counter_config::period, tcc_config::pins, stat, tcc_enable(), tcc_enable_circular_buffer_compare(), tcc_enable_circular_buffer_top(), tcc_get_config_defaults(), tcc_init(), tcc_instance, TCC_RAMP_RAMP2A, tcc_set_double_buffer_compare_values(), tcc_set_double_buffer_top_values(), TCC_WAVE_GENERATION_SINGLE_SLOPE_PWM, tcc_match_wave_config::wave_generation, tcc_pins_config::wave_out_pin, tcc_pins_config::wave_out_pin_mux, tcc_match_wave_config::wave_polarity, and tcc_match_wave_config::wave_ramp.

Referenced by config_ramp2_dma().

static void configure_trigger ( void  )

static

References port_config::direction, port_get_config_defaults(), PORT_PIN_DIR_OUTPUT, port_pin_set_config(), and port_pin_set_output_level().

Referenced by config_ramp2_dma().

void trigger_generation

(

void

)

References tcc_module::hw, port_pin_toggle_output_level(), tcc_instance, and TRIGGER_FLAGS.

Referenced by main().

enum status_code stat = STATUS_OK

static

Referenced by chk_mounted(), configure_tcc_ramp2a_mode(), and f_getfree().

struct tcc_module tcc_instance

static

struct dma_resource tcc_ramp_a_dma_resource

static

Referenced by config_dma_for_tcc_ramp2a().