Diff: TouchKey_RSK_TFT.cpp

Revision:

1:538027089976

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TouchKey_RSK_TFT.cpp	Tue Sep 27 12:36:07 2016 +0000
@@ -0,0 +1,74 @@
+/* mbed Microcontroller Library
+ * Copyright (C) 2016 Renesas Electronics Corporation. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "TouchKey_RSK_TFT.h"
+
+TouchKey_RSK_TFT::TouchKey_RSK_TFT(PinName tprst, PinName tpint, PinName sda, PinName scl) :
+ TouchKey(tprst, tpint), i2c(sda, scl) {
+}
+
+int TouchKey_RSK_TFT::GetMaxTouchNum(void) {
+    return 5;
+}
+
+int TouchKey_RSK_TFT::GetCoordinates(int touch_buff_num, touch_pos_t * p_touch) {
+    char buf[32];
+    uint32_t wk_x;
+    uint32_t wk_y;
+    touch_pos_t * wk_touch;
+    int count = 0;
+    int i;
+    int read_size;
+
+    if (touch_buff_num > GetMaxTouchNum()) {
+        touch_buff_num =  GetMaxTouchNum();
+    }
+    read_size = 2 + 6 * touch_buff_num;
+
+    if (p_touch != NULL) {
+        for (i = 0; i < touch_buff_num; i++) {
+            wk_touch        = &p_touch[i];
+            wk_touch->x     = 0;
+            wk_touch->y     = 0;
+            wk_touch->valid = false;
+        }
+        if (i2c.read((0x38 << 1), buf, read_size) == 0) {
+            for (i = 0; i < touch_buff_num; i++) {
+                if (buf[2] > i) {
+                    wk_touch = &p_touch[i];
+                    wk_x = (((uint32_t)buf[3 + (6 * i)] & 0x0F) << 8) | buf[4 + (6 * i)];
+                    if (wk_x < 800) {
+                        wk_touch->x = 800 - wk_x;
+                    } else {
+                        wk_touch->x = 0;
+                    }
+                    wk_y = (((uint32_t)buf[5 + (6 * i)] & 0x0F) << 8) | buf[6 + (6 * i)];
+                    if (wk_y < 480) {
+                        wk_touch->y = 480 - wk_y;
+                    } else {
+                        wk_touch->y = 0;
+                    }
+                    wk_touch->valid = 1;
+                    count++;
+                }
+            }
+        }
+    }
+
+    return count;
+}
+
+