#define AD_TO_X(adx) (LCD_MAX_WIDTH * (adx - PT2046_TOUCH_AD_TOP) / ( PT2046_TOUCH_AD_BOTTOM - PT2046_TOUCH_AD_TOP ))
#define AD_TO_Y(ady) (LCD_MAX_LENGTH * (PT2046_TOUCH_AD_LEFT - ady) / (PT2046_TOUCH_AD_LEFT - PT2046_TOUCH_AD_RIGHT))
-#define TS_POLL_DELAY (3 * 1000000) /* ns delay before the first sample */
-#define TS_POLL_PERIOD (15 * 1000000) /* ns delay between samples */
+#define TS_POLL_DELAY (10 * 1000000) /* ns delay before the first sample */
+#define TS_POLL_PERIOD (20 * 1000000) /* ns delay between samples */
#define DEBOUNCE_REPTIME 3
/* this driver doesn't aim at the peak continuous sample rate */