TC Quadrature Decoder Example for SAM4E.

#include "asf.h"
#include "conf_example.h"
#include "conf_board.h"
#include "conf_clock.h"

Data Structures
struct	tc_qdec_config
	TC QDEC configuration structure. More...

struct	tc_qdec_pins_config
	Configuration struct for the TCC module output pins. More...

struct	tc_qdec_results
	TC QDEC configuration structure. More...

Macros
#define	STRING_EOL "\r"

#define	STRING_HEADER

Functions
static void	config_tc_qdec_iopins (Tc const hw, const struct tc_qdec_config const config)
	configure TC QDEC IO pins. More...

static void	config_tc_qdec_mode_position (Tc const hw, const struct tc_qdec_config const config)
	configure TC QDEC for position mode. More...

static void	config_tc_qdec_mode_speed (Tc const hw, const struct tc_qdec_config const config)
	configure TC QDEC for speed mode. More...

static void	config_tc_qdec_mode_test_basetimer (Tc const hw, const struct tc_qdec_config const config)
	configure TC QDEC for test_basetimer mode. More...

static void	configure_console (void)
	Configure UART console. More...

static void	configure_tc_qdec (void)
	configure TC QDEC. More...

static void	display_menu (void)
	Display the user menu on the UART. More...

int	main (void)
	Application entry point for tc_capture_waveform example. More...

static void	tc_qdec_getresult (void)
	TC QDEC get results. More...

static void	tc_qdec_init (Tc const hw, const struct tc_qdec_config const config)
	Initialize TC QDEC. More...

static void	tc_qdec_printresults (void)
	TC QDEC print results. More...

Variables
static const uint32_t	divisors [5] = { 2, 8, 32, 128, 0}

struct tc_qdec_config	qdec_config [QDEC_INSTANCE_MAX]

struct tc_qdec_results	qdec_results [QDEC_INSTANCE_MAX]
	current values of position, speed, direction More...

#define STRING_EOL "\r"

#define STRING_HEADER

Value:

"--TC Quadrature Decoder Example --\r\n" \
        "-- "BOARD_NAME " --\r\n" \
        "-- Compiled: "__DATE__ " "__TIME__ " --"STRING_EOL

static void config_tc_qdec_iopins	(	Tc *const	hw,
		const struct tc_qdec_config *const	config
	)

static

configure TC QDEC IO pins.

References ioport_disable_pin(), ioport_set_pin_mode(), tc_qdec_config::pins, tc_qdec_pins_config::qdec_input_index_pin, tc_qdec_pins_config::qdec_input_index_pin_mux, tc_qdec_pins_config::qdec_input_pha_pin, tc_qdec_pins_config::qdec_input_pha_pin_mux, tc_qdec_pins_config::qdec_input_phb_pin, and tc_qdec_pins_config::qdec_input_phb_pin_mux.

Referenced by config_tc_qdec_mode_position(), and config_tc_qdec_mode_speed().

static void config_tc_qdec_mode_position	(	Tc *const	hw,
		const struct tc_qdec_config *const	config
	)

static

configure TC QDEC for position mode.

References tc_qdec_config::channelid, config_tc_qdec_iopins(), sysclk_enable_peripheral_clock(), tc_init(), and tc_set_block_mode().

Referenced by tc_qdec_init().

static void config_tc_qdec_mode_speed	(	Tc *const	hw,
		const struct tc_qdec_config *const	config
	)

static

configure TC QDEC for speed mode.

References tc_qdec_config::channelid, config_tc_qdec_iopins(), sysclk_enable_peripheral_clock(), sysclk_get_peripheral_bus_hz(), tc_init(), tc_set_block_mode(), and tc_write_rc().

Referenced by tc_qdec_init().

static void config_tc_qdec_mode_test_basetimer	(	Tc *const	hw,
		const struct tc_qdec_config *const	config
	)

static

configure TC QDEC for test_basetimer mode.

References tc_qdec_config::channelid, tc_qdec_pins_config::enable_qdec_test_wave_out_pin, ioport_disable_pin(), ioport_set_pin_mode(), tc_qdec_config::pins, tc_qdec_pins_config::qdec_test_basetimer_out_pin, tc_qdec_pins_config::qdec_test_basetimer_out_pin_mux, sysclk_enable_peripheral_clock(), sysclk_get_peripheral_bus_hz(), tc_init(), tc_start(), and tc_write_rc().

Referenced by tc_qdec_init().

static void configure_console ( void )

static

Configure UART console.

References uart_rs232_options::baudrate, and stdio_serial_init().

Referenced by main().

static void configure_tc_qdec ( void )

static

configure TC QDEC.

References tc_qdec_init().

Referenced by main().

static void display_menu ( void )

static

Display the user menu on the UART.

References BOARD_NAME.

Referenced by main().

int main ( void )

Application entry point for tc_capture_waveform example.

Returns: Unused (ANSI-C compatibility).

References board_init(), configure_console(), configure_tc_qdec(), display_menu(), gpio_toggle_pin, sysclk_init(), tc_qdec_getresult(), tc_qdec_printresults(), and wdt_disable().

static void tc_qdec_getresult ( void )

static

TC QDEC get results.

References tc_qdec_config::qdec, tc_qdec_results::qdec_cv0, tc_qdec_results::qdec_cv1, tc_qdec_results::qdec_dir, qdec_results, tc_qdec_results::qdec_speed, and TC_RA.

Referenced by main().

static void tc_qdec_init	(	Tc *const	hw,
		const struct tc_qdec_config *const	config
	)

static

Initialize TC QDEC.

References config_tc_qdec_mode_position(), config_tc_qdec_mode_speed(), config_tc_qdec_mode_test_basetimer(), tc_qdec_config::mode, and tc_start().

Referenced by configure_tc_qdec().

static void tc_qdec_printresults ( void )

static

TC QDEC print results.

References delay_us, tc_qdec_results::qdec_cv0, tc_qdec_results::qdec_cv1, tc_qdec_results::qdec_dir, qdec_results, and tc_qdec_results::qdec_speed.

Referenced by main().

const uint32_t divisors[5] = { 2, 8, 32, 128, 0}

static

struct tc_qdec_config qdec_config[QDEC_INSTANCE_MAX]

struct tc_qdec_results qdec_results[QDEC_INSTANCE_MAX]

current values of position, speed, direction

Referenced by tc_qdec_getresult(), and tc_qdec_printresults().

Microchip® Advanced Software Framework

Data Structures

Macros

Functions

Variables