/**
* \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;
}
}
void rtouch_process(void)
{
static rtouch_point_t old_position;
uint32_t timeKeep;
int32_t xDiff, yDiff;
uint32_t x, y;
if (g_ul_is_rtouch_enabled == 0) {
return;
}
g_ul_timestamp++;
/**
* Get the current position of the pen if penIRQ has
* low value (pen pressed)
*/
if (rtouch_is_pressed()) {
/** Get the current position of the pressed pen */
if (rtouch_is_calibrated()) {
rtouch_get_raw_point(&x, &y);
event.raw.x = x;
event.raw.y = y;
old_position.x = event.panel.x;
old_position.y = event.panel.y;
rtouch_get_calibrated_point(&event.raw, &event.panel);
}
/** call the callback function */
if (pen_state == STATE_PEN_PRESSED) {
if (rtouch_is_calibrated()) {
/** Filter move event if the move is too low */
xDiff = old_position.x - event.panel.x;
yDiff = old_position.y - event.panel.y;
if (!((xDiff >= -POINTS_MAX_ERROR) &&
(xDiff <= POINTS_MAX_ERROR) &&
(yDiff >= -POINTS_MAX_ERROR) &&
(yDiff <= POINTS_MAX_ERROR))) {
event.type = RTOUCH_MOVE;
if (event_handler) {
event_handler(&event);
}
}
}
}
}
/** Determine the pen state */
if (rtouch_is_pressed()) {
/** Touch pressed: reinit the last time when release */
g_ul_timerelease = g_ul_timestamp;
if (pen_state == STATE_PEN_DEBOUNCE) {
timeKeep = g_ul_timestamp;
timeKeep -= g_ul_timepress;
if (timeKeep > DEBOUNCE_TIME) {
/** pen is pressed during an enough time : the state change */
pen_state = STATE_PEN_PRESSED;
event.type = RTOUCH_PRESS;
/** call the callback function */
if (rtouch_is_calibrated() && event_handler) {
event_handler(&event);
}
}
}
} else {
/** Touch released: reinit the last time when release */
g_ul_timepress = g_ul_timestamp;
if (pen_state == STATE_PEN_DEBOUNCE) {
timeKeep = g_ul_timestamp;
timeKeep -= g_ul_timerelease;
if (timeKeep > DEBOUNCE_TIME) {
/** pen is pressed during an enough time : the state change */
pen_state = STATE_PEN_RELEASED;
event.type = RTOUCH_RELEASE;
/** call the callback function */
if (rtouch_is_calibrated() && event_handler) {
event_handler(&event);
}
}
}
}
}
/**
* \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;
}
}
