/**
* \brief Starts the calibration routines and displays user instructions on screen.
*
* \return 0 if calibration is successful, else 1.
*/
uint32_t rtouch_calibrate(void)
{
uint32_t i;
uint32_t x, y;
/* Print user instructions */
lcd_fill(UNI_COLOR_WHITE);
lcd_set_foreground_color(UNI_COLOR_BLACK);
lcd_draw_string(30, 60, (uint8_t *)"LCD calibration");
lcd_draw_string(1, 190, (uint8_t *)"Touch the dots to\ncalibrate the screen");
/* Calibration points */
for (i = 0; i < 5; i++) {
draw_calibration_point(&gs_calibration_points[i].panel);
/* Wait for touch & end of conversion */
rtouch_wait_pressed();
rtouch_get_raw_point(&x, &y);
gs_calibration_points[i].raw.x = x;
gs_calibration_points[i].raw.y = y;
clear_calibration_point(&gs_calibration_points[i].panel);
/* Wait for contact loss */
rtouch_wait_released();
}
if (rtouch_compute_calibration((rtouch_calibration_point_t *) &gs_calibration_points) == 0) {
lcd_fill(UNI_COLOR_WHITE);
lcd_set_foreground_color(UNI_COLOR_BLACK);
lcd_draw_string(20, 130, (uint8_t *)"Calibration done.");
return 0;
} else {
lcd_fill(UNI_COLOR_WHITE);
lcd_set_foreground_color(UNI_COLOR_BLACK);
lcd_draw_string(10, 100, (uint8_t *)"Calibration failed!");
lcd_draw_string(10, 190, (uint8_t *)"Please try again...");
/* Wait for contact loss */
rtouch_wait_released();
return 1;
}
}
/**
* \brief Starts the calibration routines and displays user instructions on screen.
*
* \return 0 if calibration is successful, else 1.
*/
uint32_t rtouch_calibrate(void)
{
uint32_t i;
uint32_t x, y;
/* Fill the whole screen with the background color */
gfx_draw_filled_rect(0, 0, gfx_get_width(), gfx_get_height(), BGCOLOR);
/* Print user instructions */
/* Write center-aligned text string to the top of the display */
gfx_draw_string_aligned(string_calib_name,
gfx_get_width() / 2, 60, &sysfont,
GFX_COLOR_WHITE, TXTCOLOR,
TEXT_POS_CENTER, TEXT_ALIGN_LEFT);
gfx_draw_string_aligned(string_calib_instruction,
gfx_get_width() / 2, 190, &sysfont,
GFX_COLOR_WHITE, TXTCOLOR,
TEXT_POS_CENTER, TEXT_ALIGN_LEFT);
/* Calibration points */
for (i = 0; i < NUM_TOUCH_POINTS; i++) {
draw_calibration_point(&gs_calibration_points[i].panel);
/* Wait for touch & end of conversion */
rtouch_wait_pressed();
rtouch_get_raw_point(&x, &y);
gs_calibration_points[i].raw.x = x;
gs_calibration_points[i].raw.y = y;
clear_calibration_point(&gs_calibration_points[i].panel);
/* Wait for contact loss */
rtouch_wait_released();
}
/* Check if the points acceptable */
if (rtouch_compute_calibration((rtouch_calibration_point_t *) &gs_calibration_points) == 0) {
for (i=0;i<NUM_TOUCH_POINTS;i++) {
g_demo_parameters.calib_points[i].raw.x = gs_calibration_points[i].raw.x;
g_demo_parameters.calib_points[i].raw.y = gs_calibration_points[i].raw.y;
}
/* Commit changes to the parameter area */
demo_parameters_commit_changes();
/* Display calibration done string */
gfx_draw_string_aligned(string_calib_done,
gfx_get_width() / 2, 130, &sysfont,
GFX_COLOR_WHITE, TXTCOLOR,
TEXT_POS_CENTER, TEXT_ALIGN_LEFT);
return 0;
} else {
/* Clear instruction string first */
gfx_draw_string_aligned(string_calib_instruction,
gfx_get_width() / 2, 190, &sysfont,
GFX_COLOR_WHITE, GFX_COLOR_WHITE,
TEXT_POS_CENTER, TEXT_ALIGN_LEFT);
/* Show up failed string */
gfx_draw_string_aligned(string_calib_failed,
gfx_get_width() / 2, 100, &sysfont,
GFX_COLOR_WHITE, TXTCOLOR,
TEXT_POS_CENTER, TEXT_ALIGN_LEFT);
/* Display retry string */
gfx_draw_string_aligned(string_calib_retry,
gfx_get_width() / 2, 190, &sysfont,
GFX_COLOR_WHITE, TXTCOLOR,
TEXT_POS_CENTER, TEXT_ALIGN_LEFT);
/* Wait for contact loss */
rtouch_wait_released();
return 1;
}
}
