Diff: mGTP/mGTPlib.cpp

Revision:

0:6fa19738f62e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mGTP/mGTPlib.cpp	Mon Sep 08 16:07:05 2014 +0000
@@ -0,0 +1,46 @@
+// --------------------------------------------------------
+//  mGTPlib.c (c) Copyright 2013-2014 Goji.
+// --------------------------------------------------------
+
+#include "mbed.h"
+#include "mainconf.h"
+
+#include "mGTP.h"
+
+extern  TFT_INFO TFT_info;
+
+#define TPC_ABS(a,b)    ((a>b)?(a-b):(b-a))
+
+int16_t TPC_getXYO(int16_t *dx, int16_t *dy)
+{
+    int16_t wx1, wx2, wy1, wy2;
+
+    if ((wx1 = get_pX()) < TFT_info.TPC_xNon) return(0);
+    if ((wy1 = get_pY()) < TFT_info.TPC_yNon) return(0);
+    wait_us(300);
+    if ((wx2 = get_pX()) < TFT_info.TPC_xNon) return(0);
+    if ((wy2 = get_pY()) < TFT_info.TPC_yNon) return(0);
+    if ((TPC_ABS(wx1, wx2) > 20) || (TPC_ABS(wy1, wy2) > 20)) return(1);
+
+    *dx = (wx1 + wx2) / 2;
+    *dy = (wy1 + wy2) / 2;
+
+    return(2);
+}
+
+int16_t TPC_getXY(int16_t *dx, int16_t *dy)
+{
+    int16_t rc;
+
+    if ((rc = TPC_getXYO(dx, dy)) != 2) return(rc);
+
+    *dx = (*dx > TFT_info.TPC_xMin) ? (*dx - TFT_info.TPC_xMin) : 0;
+    *dy = (*dy > TFT_info.TPC_yMin) ? (*dy - TFT_info.TPC_yMin) : 0;
+    if (*dx > TFT_info.TPC_xMax) *dx = TFT_info.TPC_xMax;
+    if (*dy > TFT_info.TPC_yMax) *dy = TFT_info.TPC_yMax;
+
+    *dx = ((((*dx * 1000) / TFT_info.TPC_xMax) * (TFT_info.xMAX - 1)) / 1000);
+    *dy = ((((*dy * 1000) / TFT_info.TPC_yMax) * (TFT_info.yMAX - 1)) / 1000);
+
+    return(2);
+}