thirdparty/qtouch/devspecific/uc3/uc3l0/examples/example_qt/main.c File Reference

#include "compiler.h"
#include "board.h"
#include "power_clocks_lib.h"
#include "gpio.h"
#include "tc.h"
#include "intc.h"
#include "touch_api_at32uc3l.h"

Macros
Example Timer configuration settings.
Includes for Clock and Timer. Includes for Touch Library.
#define	EXAMPLE_TC   (&AVR32_TC0)
	timer number. More...
#define	EXAMPLE_TC_IRQ_GROUP   (AVR32_TC0_IRQ_GROUP)
	timer irq group. More...
#define	EXAMPLE_TC_IRQ   (AVR32_TC0_IRQ0)
	timer irq. More...
#define	EXAMPLE_TC_CHANNEL   (0u)
	timer channel. More...
#define	EXAMPLE_RC_VALUE   (6000u)
	set RC value for 1ms tick. More...
Example Clock configuration settings.
Note: The QDebug protocol USART clock settings are available in qdebug/Serial.h. When modifying the EXAMPLE_CPUCLK_HZ clock, care must be taken to modify the TARGET_PBA_FREQ_HZ and TARGET_CPU_FREQ_HZ defines in the Serial.h file for the QDebug protocol to work correctly.
#define	EXAMPLE_TARGET_DFLL_FREQ_HZ   (96000000)
	DFLL target frequency, in Hz. More...
#define	EXAMPLE_TARGET_MCUCLK_FREQ_HZ   (48000000)
	MCU clock target frequency, in Hz. More...
#define	EXAMPLE_TARGET_PBACLK_FREQ_HZ   (48000000)
	PBA clock target frequency, in Hz. More...
#define	EXAMPLE_TARGET_PBBCLK_FREQ_HZ   (48000000)
	PBA clock target frequency, in Hz. More...

Functions
static touch_ret_t	config_qt_grp_a_touch_sensors (void)
	configure keys, rotors and sliders. More...
static unsigned long	init_clock (void)
	Initialize clock. More...
static void	init_system (void)
	Initialize host app, pins, watchdog, clock etc. More...
static void	init_timer (void)
	Configure timer to fire ISR regularly. More...
int	main (void)
	Example application entry function. More...
static void	tc_irq (void)
	Timer compare ISR. More...
static void	touch_qta_measure_complete_callback (touch_measure_data_t *p_measure_data)
	timer ISR More...

Variables
volatile uint16_t	current_time_ms_touch = 0u
	Current time, set by timer ISR. More...
static touch_general_config_t	general_config
	General configuration options common to QMatrix, QTouch A/B and Autonomous Touch provided as input to Touch library. More...
uint16_t	measurement_period_ms = 25u
	Touch Measurement period in milliseconds. More...
touch_measure_data_t *	p_qta_measure_data = NULL
	QTouch Group A measure data structure pointer. More...
static touch_qt_config_t	qta_config
	QTouch Group A Configuration structure provided as input to Touch Library. More...
static uint8_t	qta_data_blk [PRIV_QTA_DATA_BLK_SIZE]
	QTouch Group A Data block provided as input to Touch library. More...
volatile uint8_t	qta_measurement_done_touch = 0u
	Flag set by touch_qta_measure_complete_callback() function when a fresh Touch status is available. More...
volatile uint8_t	time_to_measure_touch = 0u
	Flag set by timer ISR when it's time to measure touch. More...
touch_config_t	touch_config
	Touch Library input configuration structure. More...
Parameters to pcl_configure_clocks().
static scif_gclk_opt_t	gc_dfllif_ref_opt = { SCIF_GCCTRL_SLOWCLOCK, 0, false }
static pcl_freq_param_t	pcl_dfll_freq_param

#define EXAMPLE_RC_VALUE   (6000u)

set RC value for 1ms tick.

Referenced by init_timer().

#define EXAMPLE_TARGET_DFLL_FREQ_HZ   (96000000)

DFLL target frequency, in Hz.

#define EXAMPLE_TARGET_MCUCLK_FREQ_HZ   (48000000)

MCU clock target frequency, in Hz.

#define EXAMPLE_TARGET_PBACLK_FREQ_HZ   (48000000)

PBA clock target frequency, in Hz.

#define EXAMPLE_TARGET_PBBCLK_FREQ_HZ   (48000000)

PBA clock target frequency, in Hz.

#define EXAMPLE_TC   (&AVR32_TC0)

timer number.

Referenced by init_timer(), and tc_irq().

#define EXAMPLE_TC_CHANNEL   (0u)

timer channel.

Referenced by init_timer(), and tc_irq().

#define EXAMPLE_TC_IRQ   (AVR32_TC0_IRQ0)

timer irq.

Referenced by main().

#define EXAMPLE_TC_IRQ_GROUP   (AVR32_TC0_IRQ_GROUP)

timer irq group.

touch_ret_t config_qt_grp_a_touch_sensors ( void  )

static

configure keys, rotors and sliders.

Example configuration for touch keys, rotors and sliders.

Return values

TOUCH_SUCCESS	Configuration setting successful.
TOUCH_INVALID_xx	Invalid input configuration setting.

References HYST_6_25, NO_AKS_GROUP, RES_1_BIT, RES_8_BIT, SENSOR_TYPE_KEY, SENSOR_TYPE_ROTOR, SENSOR_TYPE_SLIDER, TOUCH_QT_GRP_A, touch_qt_sensor_config(), and TOUCH_SUCCESS.

Referenced by main().

static unsigned long init_clock ( void  )

static

Initialize clock.

Initialize Clock.

References pcl_configure_clocks(), and pcl_dfll_freq_param.

Referenced by init_system().

void init_system ( void  )

static

Initialize host app, pins, watchdog, clock etc.

Initialize host clock, pins, watchdog, etc.

References init_clock().

Referenced by main().

void init_timer ( void  )

static

Configure timer to fire ISR regularly.

Configure timer ISR to fire regularly.

References tc_waveform_opt_t::channel, tc_interrupt_t::etrgs, EXAMPLE_RC_VALUE, EXAMPLE_TC, EXAMPLE_TC_CHANNEL, TC_CLOCK_SOURCE_TC3, tc_configure_interrupts(), TC_EVT_EFFECT_NOOP, tc_init_waveform(), TC_SEL_NO_EDGE, tc_start(), TC_WAVEFORM_SEL_UP_MODE_RC_TRIGGER, and tc_write_rc().

Referenced by main().

int main

(

void

)

Example application entry function.

References tag_touch_measure_data_t::acq_status, config_qt_grp_a_touch_sensors(), current_time_ms_touch, Disable_global_interrupt, Enable_global_interrupt, EXAMPLE_TC_IRQ, init_system(), init_timer(), INTC_init_interrupts(), INTC_register_interrupt(), NORMAL_ACQ_MODE, QDebug_Init(), QDebug_ProcessCommands(), QDebug_SendData(), QTA_DMA_CHANNEL_0, qta_measurement_done_touch, tc_irq(), time_to_measure_touch, TOUCH_ACQ_INCOMPLETE, touch_event_dispatcher(), TOUCH_QT_GRP_A, touch_qt_sensors_calibrate(), touch_qt_sensors_init, touch_qt_sensors_start_acquisition(), touch_qta_measure_complete_callback(), and TOUCH_SUCCESS.

static void tc_irq ( void  )

static

Timer compare ISR.

References current_time_ms_touch, EXAMPLE_TC, EXAMPLE_TC_CHANNEL, measurement_period_ms, tc_read_sr(), and time_to_measure_touch.

Referenced by main().

void touch_qta_measure_complete_callback ( touch_measure_data_t *  p_measure_data )

static

timer ISR

QTouch Group A measure complete callback function.

QTouch Group A measure complete callback function example prototype.

This function is called by the library when the touch measurement process for QTouch Group A sensors is completed.

Parameters

p_measure_data

Base address of touch_measure_data_t instance.

Note

A touch_qta_measure_complete_callback() call signifies that fresh values of touch status, rotor/slider position, measured signals, references and Sensor data is available. The QTouch Group A measured data can be accessed using the p_measure_data pointer.

References qta_measurement_done_touch, and UNUSED.

Referenced by main().

volatile uint16_t current_time_ms_touch = 0u

Current time, set by timer ISR.

scif_gclk_opt_t gc_dfllif_ref_opt = { SCIF_GCCTRL_SLOWCLOCK, 0, false }

static

touch_general_config_t general_config

static

Initial value:

= {
  TOUCH_SYNC_PIN_OPTION,    
  TOUCH_SPREAD_SPECTRUM_MAX_DEV,    
  TOUCH_CSARES,         
  TOUCH_CSBRES          
}

General configuration options common to QMatrix, QTouch A/B and Autonomous Touch provided as input to Touch library.

Note: Use the touch_config_at32uc3l.h configuration header file to fill in the elements of this structure. DO NOT modify any of the input values directly in this structure.

uint16_t measurement_period_ms = 25u

Touch Measurement period in milliseconds.

This variable determines how often a new touch measurement must be done. Default value: Every 25 milliseconds.

touch_measure_data_t* p_qta_measure_data = NULL

QTouch Group A measure data structure pointer.

pcl_freq_param_t pcl_dfll_freq_param

static

Initial value:

= {
  .main_clk_src = PCL_MC_DFLL0,
  .cpu_f = EXAMPLE_TARGET_MCUCLK_FREQ_HZ,
  .pba_f = EXAMPLE_TARGET_PBACLK_FREQ_HZ,
  .pbb_f = EXAMPLE_TARGET_PBBCLK_FREQ_HZ,
  .dfll_f = EXAMPLE_TARGET_DFLL_FREQ_HZ,
  .pextra_params = &gc_dfllif_ref_opt
}

Referenced by init_clock().

touch_qt_config_t qta_config

static

QTouch Group A Configuration structure provided as input to Touch Library.

Note: Use the touch_config_at32uc3l.h configuration header file to fill in the elements of this structure. DO NOT modify any of the input values directly in this structure.

uint8_t qta_data_blk[PRIV_QTA_DATA_BLK_SIZE]

static

QTouch Group A Data block provided as input to Touch library.

volatile uint8_t qta_measurement_done_touch = 0u

Flag set by touch_qta_measure_complete_callback() function when a fresh Touch status is available.

Referenced by main(), and touch_qta_measure_complete_callback().

volatile uint8_t time_to_measure_touch = 0u

Flag set by timer ISR when it's time to measure touch.

touch_config_t touch_config

Initial value:

= {
  NULL,             
  NULL,             
  &qta_config,          
  NULL,             
  &general_config       
}

Touch Library input configuration structure.