main.c File Reference

This file contains the SAMD QTouch library sample user application.

Copyright (c) 2014-2018 Microchip Technology Inc. and its subsidiaries.

#include <asf.h>

Macros
#define	GET_MUTLCAP_ROTOR_SLIDER_POSITION(ROTOR_SLIDER_NUMBER)
#define	GET_MUTLCAP_SENSOR_STATE(SENSOR_NUMBER)
#define	LED_1_PIN   PIN_PB01
	Discrete LED output pin definitions. More...
#define	LED_2_PIN   PIN_PB02
#define	LED_3_PIN   PIN_PB03
#define	LED_4_PIN   PIN_PA05
#define	LED_5_PIN   PIN_PA06
#define	LED_6_PIN   PIN_PA04
#define	LED_7_PIN   PIN_PA07
#define	LED_B_PIN   PIN_PA17
#define	LED_G_PIN   PIN_PB15
#define	LED_R_PIN   PIN_PB14
	RGB LED output pin definitions. More...
#define	TIME_PERIOD_1MSEC   33u
	RTC Interrupt timing definition. More...

Functions
void	configure_port_pins (void)
	Prototypes. More...
void	configure_rtc_callbacks (void)
	Configure the RTC timer callback. More...
void	configure_rtc_count (void)
	Configure the RTC timer count after which interrupts comes. More...
int	main (void)
	Main function. More...
void	rtc_overflow_callback (void)
	RTC timer overflow callback. More...
void	timer_init (void)
	Initialize timer. More...

Variables
volatile uint8_t	PWM_Count
const uint8_t	PWM_RGB_values [64][3]
uint8_t	rotor_position
uint8_t	rotor_state
	Variables. More...
struct rtc_module	rtc_instance
volatile uint16_t	touch_time_counter = 0u

#define GET_MUTLCAP_ROTOR_SLIDER_POSITION

(

ROTOR_SLIDER_NUMBER

)

Value:

p_mutlcap_measure_data->p_rotor_slider_values[ \
        ROTOR_SLIDER_NUMBER]

Referenced by main(), and rtc_overflow_callback().

#define GET_MUTLCAP_SENSOR_STATE

(

SENSOR_NUMBER

)

Value:

p_mutlcap_measure_data-> \
    p_sensor_states[(SENSOR_NUMBER / \
    8)] & (1 << (SENSOR_NUMBER % 8))

Referenced by main().

#define LED_1_PIN   PIN_PB01

Discrete LED output pin definitions.

Referenced by configure_port_pins(), and main().

#define LED_2_PIN   PIN_PB02

Referenced by configure_port_pins(), and main().

#define LED_3_PIN   PIN_PB03

Referenced by configure_port_pins(), and main().

#define LED_4_PIN   PIN_PA05

Referenced by configure_port_pins(), and main().

#define LED_5_PIN   PIN_PA06

Referenced by configure_port_pins(), and main().

#define LED_6_PIN   PIN_PA04

Referenced by configure_port_pins(), and main().

#define LED_7_PIN   PIN_PA07

Referenced by configure_port_pins(), and main().

#define LED_B_PIN   PIN_PA17

Referenced by configure_port_pins(), main(), and rtc_overflow_callback().

#define LED_G_PIN   PIN_PB15

Referenced by configure_port_pins(), main(), and rtc_overflow_callback().

#define LED_R_PIN   PIN_PB14

RGB LED output pin definitions.

Referenced by configure_port_pins(), main(), and rtc_overflow_callback().

#define TIME_PERIOD_1MSEC   33u

RTC Interrupt timing definition.

Referenced by timer_init().

void configure_port_pins

(

void

)

Prototypes.

Port pin configuration / assignments.

Configure Port pins

References port_config::direction, LED_0_PIN, LED_1_PIN, LED_2_PIN, LED_3_PIN, LED_4_PIN, LED_5_PIN, LED_6_PIN, LED_7_PIN, LED_B_PIN, LED_G_PIN, LED_R_PIN, port_get_config_defaults(), PORT_PIN_DIR_OUTPUT, and port_pin_set_config().

Referenced by main().

void configure_rtc_callbacks

(

void

)

Configure the RTC timer callback.

References RTC_COUNT_CALLBACK_OVERFLOW, rtc_count_enable_callback(), rtc_count_register_callback(), rtc_instance, and rtc_overflow_callback().

Referenced by timer_init().

void configure_rtc_count

(

void

)

Configure the RTC timer count after which interrupts comes.

References rtc_count_config::continuously_update, rtc_count_config::mode, rtc_count_config::prescaler, rtc_count_enable(), rtc_count_get_config_defaults(), rtc_count_init(), RTC_COUNT_MODE_16BIT, RTC_COUNT_PRESCALER_DIV_1, and rtc_instance.

Referenced by timer_init().

int main

(

void

)

Main function.

Initialize and configure system and generic clocks. Use conf_clocks.h to configure system and generic clocks.

Enable global interrupts.

Initialize delay service.

Initialize timer.

Initialize QTouch library and configure touch sensors.

Configure port pins

Turn off all extension board LEDs

Goto STANDBY sleep mode, unless woken by timer or PTC interrupt.

Start touch sensor measurement, if touch_time.time_to_measure_touch flag is set by timer.

Get touch sensor states

Clear all slider controlled LEDs

If slider is activated

Parse slider position

References configure_port_pins(), delay_init(), GET_MUTLCAP_ROTOR_SLIDER_POSITION, GET_MUTLCAP_SENSOR_STATE, LED_0_PIN, LED_1_PIN, LED_2_PIN, LED_3_PIN, LED_4_PIN, LED_5_PIN, LED_6_PIN, LED_7_PIN, LED_B_PIN, LED_G_PIN, LED_R_PIN, tag_touch_measure_data_t::measurement_done_touch, p_mutlcap_measure_data, port_pin_set_output_level(), PWM_Count, rotor_state, system_init(), system_interrupt_enable_global(), system_set_sleepmode(), system_sleep(), SYSTEM_SLEEPMODE_STANDBY, timer_init(), touch_sensors_init(), and touch_sensors_measure().

void rtc_overflow_callback

(

void

)

RTC timer overflow callback.

Configure the RTC timer overflow callback.

References tag_touch_time_t::current_time_ms, GET_MUTLCAP_ROTOR_SLIDER_POSITION, LED_B_PIN, LED_G_PIN, LED_R_PIN, tag_touch_time_t::measurement_period_ms, port_pin_set_output_level(), PWM_Count, PWM_RGB_values, rotor_position, rotor_state, tag_touch_time_t::time_to_measure_touch, touch_time, and touch_time_counter.

Referenced by configure_rtc_callbacks().

void timer_init

(

void

)

Initialize timer.

References configure_rtc_callbacks(), configure_rtc_count(), rtc_count_set_period(), rtc_instance, and TIME_PERIOD_1MSEC.

Referenced by main().

volatile uint8_t PWM_Count

Referenced by main(), and rtc_overflow_callback().

const uint8_t PWM_RGB_values[64][3]

Referenced by rtc_overflow_callback().

uint8_t rotor_position

Referenced by rtc_overflow_callback().

uint8_t rotor_state

Variables.

Referenced by main(), and rtc_overflow_callback().

struct rtc_module rtc_instance

Referenced by configure_rtc_callbacks(), configure_rtc_count(), and timer_init().

volatile uint16_t touch_time_counter = 0u

Referenced by rtc_overflow_callback().