cleanup
Joel Bodenmann
parent
800869979f
commit
ccf7fc3068
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@ -85,64 +85,64 @@ static coord_t _tsReadRealY(void) {
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}
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static void _tsDrawCross(uint16_t x, uint16_t y) {
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gdispDrawLine(x-15, y, x-2, y, White);
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gdispDrawLine(x+2, y, x+15, y, White);
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gdispDrawLine(x, y-15, x, y-2, White);
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gdispDrawLine(x, y+2, x, y+15, White);
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gdispDrawLine(x-15, y, x-2, y, White);
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gdispDrawLine(x+2, y, x+15, y, White);
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gdispDrawLine(x, y-15, x, y-2, White);
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gdispDrawLine(x, y+2, x, y+15, White);
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gdispDrawLine(x-15, y+15, x-7, y+15, RGB2COLOR(184,158,131));
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gdispDrawLine(x-15, y+7, x-15, y+15, RGB2COLOR(184,158,131));
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gdispDrawLine(x-15, y+15, x-7, y+15, RGB2COLOR(184,158,131));
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gdispDrawLine(x-15, y+7, x-15, y+15, RGB2COLOR(184,158,131));
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gdispDrawLine(x-15, y-15, x-7, y-15, RGB2COLOR(184,158,131));
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gdispDrawLine(x-15, y-7, x-15, y-15, RGB2COLOR(184,158,131));
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gdispDrawLine(x-15, y-15, x-7, y-15, RGB2COLOR(184,158,131));
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gdispDrawLine(x-15, y-7, x-15, y-15, RGB2COLOR(184,158,131));
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gdispDrawLine(x+7, y+15, x+15, y+15, RGB2COLOR(184,158,131));
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gdispDrawLine(x+15, y+7, x+15, y+15, RGB2COLOR(184,158,131));
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gdispDrawLine(x+7, y+15, x+15, y+15, RGB2COLOR(184,158,131));
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gdispDrawLine(x+15, y+7, x+15, y+15, RGB2COLOR(184,158,131));
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gdispDrawLine(x+7, y-15, x+15, y-15, RGB2COLOR(184,158,131));
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gdispDrawLine(x+15, y-15, x+15, y-7, RGB2COLOR(184,158,131));
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gdispDrawLine(x+7, y-15, x+15, y-15, RGB2COLOR(184,158,131));
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gdispDrawLine(x+15, y-15, x+15, y-7, RGB2COLOR(184,158,131));
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}
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static void _tsTransform(coord_t *x, coord_t *y) {
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*x = (coord_t) (cal->ax * (*x) + cal->bx * (*y) + cal->cx);
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*y = (coord_t) (cal->ay * (*x) + cal->by * (*y) + cal->cy);
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*x = (coord_t) (cal->ax * (*x) + cal->bx * (*y) + cal->cx);
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*y = (coord_t) (cal->ay * (*x) + cal->by * (*y) + cal->cy);
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}
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static void _tsDo3PointCalibration(const coord_t (*cross)[2], coord_t (*points)[2], cal_t *c) {
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float dx, dx0, dx1, dx2, dy0, dy1, dy2;
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float dx, dx0, dx1, dx2, dy0, dy1, dy2;
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/* Compute all the required determinants */
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dx = ((float)(points[0][0] - points[2][0])) * ((float)(points[1][1] - points[2][1]))
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- ((float)(points[1][0] - points[2][0])) * ((float)(points[0][1] - points[2][1]));
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/* Compute all the required determinants */
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dx = ((float)(points[0][0] - points[2][0])) * ((float)(points[1][1] - points[2][1]))
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- ((float)(points[1][0] - points[2][0])) * ((float)(points[0][1] - points[2][1]));
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dx0 = ((float)(cross[0][0] - cross[2][0])) * ((float)(points[1][1] - points[2][1]))
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- ((float)(cross[1][0] - cross[2][0])) * ((float)(points[0][1] - points[2][1]));
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dx0 = ((float)(cross[0][0] - cross[2][0])) * ((float)(points[1][1] - points[2][1]))
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- ((float)(cross[1][0] - cross[2][0])) * ((float)(points[0][1] - points[2][1]));
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dx1 = ((float)(points[0][0] - points[2][0])) * ((float)(cross[1][0] - cross[2][0]))
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- ((float)(points[1][0] - points[2][0])) * ((float)(cross[0][0] - cross[2][0]));
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dx1 = ((float)(points[0][0] - points[2][0])) * ((float)(cross[1][0] - cross[2][0]))
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- ((float)(points[1][0] - points[2][0])) * ((float)(cross[0][0] - cross[2][0]));
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dx2 = cross[0][0] * ((float)points[1][0] * (float)points[2][1] - (float)points[2][0] * (float)points[1][1]) -
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cross[1][0] * ((float)points[0][0] * (float)points[2][1] - (float)points[2][0] * (float)points[0][1]) +
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cross[2][0] * ((float)points[0][0] * (float)points[1][1] - (float)points[1][0] * (float)points[0][1]);
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dx2 = cross[0][0] * ((float)points[1][0] * (float)points[2][1] - (float)points[2][0] * (float)points[1][1]) -
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cross[1][0] * ((float)points[0][0] * (float)points[2][1] - (float)points[2][0] * (float)points[0][1]) +
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cross[2][0] * ((float)points[0][0] * (float)points[1][1] - (float)points[1][0] * (float)points[0][1]);
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dy0 = ((float)(cross[0][1] - cross[2][1])) * ((float)(points[1][1] - points[2][1]))
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- ((float)(cross[1][1] - cross[2][1])) * ((float)(points[0][1] - points[2][1]));
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dy0 = ((float)(cross[0][1] - cross[2][1])) * ((float)(points[1][1] - points[2][1]))
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- ((float)(cross[1][1] - cross[2][1])) * ((float)(points[0][1] - points[2][1]));
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dy1 = ((float)(points[0][0] - points[2][0])) * ((float)(cross[1][1] - cross[2][1]))
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- ((float)(points[1][0] - points[2][0])) * ((float)(cross[0][1] - cross[2][1]));
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dy1 = ((float)(points[0][0] - points[2][0])) * ((float)(cross[1][1] - cross[2][1]))
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- ((float)(points[1][0] - points[2][0])) * ((float)(cross[0][1] - cross[2][1]));
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dy2 = cross[0][1] * ((float)points[1][0] * (float)points[2][1] - (float)points[2][0] * (float)points[1][1]) -
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cross[1][1] * ((float)points[0][0] * (float)points[2][1] - (float)points[2][0] * (float)points[0][1]) +
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cross[2][1] * ((float)points[0][0] * (float)points[1][1] - (float)points[1][0] * (float)points[0][1]);
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dy2 = cross[0][1] * ((float)points[1][0] * (float)points[2][1] - (float)points[2][0] * (float)points[1][1]) -
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cross[1][1] * ((float)points[0][0] * (float)points[2][1] - (float)points[2][0] * (float)points[0][1]) +
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cross[2][1] * ((float)points[0][0] * (float)points[1][1] - (float)points[1][0] * (float)points[0][1]);
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/* Now, calculate all the required coefficients */
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c->ax = dx0 / dx;
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c->bx = dx1 / dx;
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c->cx = dx2 / dx;
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/* Now, calculate all the required coefficients */
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c->ax = dx0 / dx;
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c->bx = dx1 / dx;
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c->cx = dx2 / dx;
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c->ay = dy0 / dx;
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c->by = dy1 / dx;
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c->cy = dy2 / dx;
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c->ay = dy0 / dx;
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c->by = dy1 / dx;
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c->cy = dy2 / dx;
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}
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/*===========================================================================*/
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@ -187,17 +187,17 @@ void tsInit(const TouchscreenDriver *ts) {
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* @api
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*/
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coord_t tsReadX(void) {
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coord_t x, y;
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coord_t x, y;
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#if TOUCHSCREEN_XY_INVERTED == TRUE
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x = _tsReadRealY();
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y = _tsReadRealX();
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#if TOUCHSCREEN_XY_INVERTED
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x = _tsReadRealY();
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y = _tsReadRealX();
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#else
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x = _tsReadRealX();
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y = _tsReadRealY();
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x = _tsReadRealX();
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y = _tsReadRealY();
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#endif
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_tsTransform(&x, &y);
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_tsTransform(&x, &y);
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switch(gdispGetOrientation()) {
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case GDISP_ROTATE_0:
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@ -223,7 +223,7 @@ coord_t tsReadX(void) {
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coord_t tsReadY(void) {
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coord_t x, y;
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#if TOUCHSCREEN_XY_INVERTED == TRUE
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#if TOUCHSCREEN_XY_INVERTED
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x = _tsReadRealY();
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y = _tsReadRealX();
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#else
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@ -289,90 +289,89 @@ coord_t tsReadY(void) {
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* @api
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*/
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void tsCalibrate(void) {
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const uint16_t height = gdispGetHeight();
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const uint16_t width = gdispGetWidth();
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const coord_t cross[][2] = {{(width / 4), (height / 4)},
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const uint16_t height = gdispGetHeight();
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const uint16_t width = gdispGetWidth();
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const coord_t cross[][2] = {{(width / 4), (height / 4)},
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{(width - (width / 4)) , (height / 4)},
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{(width - (width / 4)) , (height - (height / 4))},
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{(width / 2), (height / 2)}}; /* Check point */
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coord_t points[4][2];
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int32_t px, py;
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uint8_t i, j;
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coord_t points[4][2];
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int32_t px, py;
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uint8_t i, j;
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gdispSetOrientation(GDISP_ROTATE_0);
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gdispClear(Blue);
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gdispSetOrientation(GDISP_ROTATE_0);
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gdispClear(Blue);
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gdispFillStringBox(0, 5, gdispGetWidth(), 30, "Calibration", &fontUI2Double, White, Blue, justifyCenter);
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gdispFillStringBox(0, 5, gdispGetWidth(), 30, "Calibration", &fontUI2Double, White, Blue, justifyCenter);
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#if TOUCHSCREEN_VERIFY_CALIBRATION
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calibrate:
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for(i = 0; i < 4; i++) {
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for(i = 0; i < 4; i++) {
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#else
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for(i = 0; i < 3; i++) {
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for(i = 0; i < 3; i++) {
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#endif
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_tsDrawCross(cross[i][0], cross[i][1]);
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_tsDrawCross(cross[i][0], cross[i][1]);
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while(!tsPressed())
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chThdSleepMilliseconds(2); /* Be nice to other threads*/
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while(!tsPressed())
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chThdSleepMilliseconds(2); /* Be nice to other threads*/
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chThdSleepMilliseconds(20); /* Allow screen to settle */
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chThdSleepMilliseconds(20); /* Allow screen to settle */
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/* Take a little more samples per point and their average
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* for precise calibration */
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px = py = 0;
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j = 0;
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/* Take a little more samples per point and their average
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* for precise calibration */
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px = py = 0;
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while(j < MAX_CAL_SAMPLES) {
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if(tsPressed()) { /* We have valid pointer data */
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#if TOUCHSCREEN_XY_INVERTED
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py += _tsReadRealX();
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px += _tsReadRealY();
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#else
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px += _tsReadRealX();
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py += _tsReadRealY();
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#endif
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j = 0;
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while(j < MAX_CAL_SAMPLES) {
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if(tsPressed()) {
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/* We have valid pointer data */
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#if TOUCHSCREEN_XY_INVERTED == TRUE
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py += _tsReadRealX();
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px += _tsReadRealY();
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#else
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px += _tsReadRealX();
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py += _tsReadRealY();
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#endif
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j++;
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}
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}
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j++;
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}
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}
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points[i][0] = px / j;
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points[i][1] = py / j;
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points[i][0] = px / j;
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points[i][1] = py / j;
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chThdSleepMilliseconds(100);
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chThdSleepMilliseconds(100);
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while(tsPressed())
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chThdSleepMilliseconds(2); /* Be nice to other threads*/
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while(tsPressed())
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chThdSleepMilliseconds(2); /* Be nice to other threads*/
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gdispFillArea(cross[i][0] - 15, cross[i][1] - 15, 42, 42, Blue);
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}
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gdispFillArea(cross[i][0] - 15, cross[i][1] - 15, 42, 42, Blue);
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}
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/* Apply 3 point calibration algorithm */
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_tsDo3PointCalibration(cross, points, cal);
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/* Apply 3 point calibration algorithm */
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_tsDo3PointCalibration(cross, points, cal);
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#if TOUCHSCREEN_VERIFY_CALIBRATION
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/* Verification of correctness of calibration (optional) :
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* See if the 4th point (Middle of the screen) coincides with the calibrated
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* result. If point is with +/- 2 pixel margin, then successful calibration
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* Else, start from the beginning.
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*/
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#if TOUCHSCREEN_VERIFY_CALIBRATION
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/* Verification of correctness of calibration (optional) :
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* See if the 4th point (Middle of the screen) coincides with the calibrated
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* result. If point is with +/- 2 pixel margin, then successful calibration
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* Else, start from the beginning.
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*/
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/* Transform the co-ordinates */
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_tpTransform(&points[3][0], &points[3][1]);
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/* Transform the co-ordinates */
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_tpTransform(&points[3][0], &points[3][1]);
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/* Calculate the delta */
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px = (points[3][0] - cross[3][0]) * (points[3][0] - cross[3][0]) +
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(points[3][1] - cross[3][1]) * (points[3][1] - cross[3][1]);
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/* Calculate the delta */
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px = (points[3][0] - cross[3][0]) * (points[3][0] - cross[3][0]) +
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(points[3][1] - cross[3][1]) * (points[3][1] - cross[3][1]);
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if(px > 4)
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goto calibrate;
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#endif
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if(px > 4)
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goto calibrate;
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#endif
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/* If enabled, serialize the calibration values for storage */
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#if TOUCHSCREEN_STORE_CALIBRATION
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ts_store_calibration_lld(cal);
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#endif
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/* If enabled, serialize the calibration values for storage */
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#if TOUCHSCREEN_STORE_CALIBRATION
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ts_store_calibration_lld(cal);
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#endif
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}
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#endif /* GFX_USE_TOUCHSCREEN */
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