services/resistive_touch/example/rtouch_calibrate.c File Reference

Resistive Touch driver.

Copyright (c) 2011-2018 Microchip Technology Inc. and its subsidiaries.

#include "asf.h"
#include "rtouch.h"
#include "rtouch_calibrate.h"
#include "resistive_touch_board.h"

Macros
#define	POINTS_SIZE   4
	Size in pixels of calibration points. More...

Functions
static void	clear_calibration_point (const rtouch_point_t *p_point)
	Clears a calibration point from the given buffer. More...
static void	draw_calibration_point (const rtouch_point_t *p_point)
	Display a calibration point on the given buffer. More...
uint32_t	rtouch_calibrate (void)
	Starts the calibration routines and displays user instructions on screen. More...

Variables
static rtouch_calibration_point_t	gs_calibration_points []
	Calibration points. More...

#define POINTS_SIZE   4

Size in pixels of calibration points.

Referenced by clear_calibration_point(), and draw_calibration_point().

static void clear_calibration_point ( const rtouch_point_t *  p_point )

static

Clears a calibration point from the given buffer.

Parameters

p_point

Calibration point to clear.

References POINTS_SIZE, rtouch_point_struct::x, and rtouch_point_struct::y.

Referenced by rtouch_calibrate().

static void draw_calibration_point ( const rtouch_point_t *  p_point )

static

Display a calibration point on the given buffer.

Parameters

p_point

Calibration point to display.

References POINTS_SIZE, rtouch_point_struct::x, and rtouch_point_struct::y.

Referenced by rtouch_calibrate().

uint32_t rtouch_calibrate

(

void

)

Starts the calibration routines and displays user instructions on screen.

Returns

0 if calibration is successful, else 1.

References BGCOLOR, demo_param_t::calib_points, clear_calibration_point(), demo_parameters_commit_changes(), draw_calibration_point(), g_demo_parameters, GFX_COLOR_WHITE, gfx_draw_filled_rect, gfx_draw_string_aligned(), gfx_get_height(), gfx_get_width(), NUM_TOUCH_POINTS, rtouch_calibration_point_struct::raw, rtouch_compute_calibration(), rtouch_get_raw_point, rtouch_wait_pressed(), rtouch_wait_released(), string_calib_done, string_calib_failed, string_calib_instruction, string_calib_name, string_calib_retry, sysfont, TEXT_ALIGN_LEFT, TEXT_POS_CENTER, TXTCOLOR, rtouch_point_struct::x, and rtouch_point_struct::y.

rtouch_calibration_point_t gs_calibration_points[]

static

Initial value:

= {
    
    {
        {LCD_WIDTH / 10,LCD_HEIGHT / 10},
        {0, 0}
    },
    
    {
        {LCD_WIDTH - LCD_WIDTH / 10, LCD_HEIGHT / 10},
        {0, 0}
    },
    
    {
        {LCD_WIDTH - LCD_WIDTH / 10, LCD_HEIGHT - LCD_HEIGHT / 10},
        {0, 0}
    },
    
    {
        {LCD_WIDTH / 10, LCD_HEIGHT - LCD_HEIGHT / 10},
        {0, 0}
    },
    
    {
        {LCD_WIDTH / 2, LCD_HEIGHT / 2},
        {0, 0}
    }   
}

Calibration points.