Diff: TouchKey.h

Revision:

0:da3d7ba2674b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TouchKey.h	Wed Jun 29 03:28:06 2016 +0000
@@ -0,0 +1,94 @@
+/* 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.
+ */
+/**************************************************************************//**
+* @file          TouchKey.h
+* @brief         TouchKey API
+******************************************************************************/
+
+#ifndef TOUCH_KEY_H
+#define TOUCH_KEY_H
+
+#include "mbed.h"
+
+/**
+ * The class to acquire touch coordinates
+ */
+class TouchKey {
+
+public:
+    /** Touch position structure */
+    typedef struct {
+        uint32_t x;      /**< The position of the x-coordinate. */
+        uint32_t y;      /**< The position of the y-coordinate. */
+        bool     valid;  /**< Whether a valid data.. */
+    } touch_pos_t;
+
+
+    /** Create a TouchKey object
+     * 
+     * @param tprst tprst pin
+     * @param tpint tpint pin
+     */
+    TouchKey(PinName tprst, PinName tpint) : touch_reset(tprst), touch_int(tpint) {
+    }
+
+    /** Initialization of touch panel IC
+     * 
+     */
+    void Reset(void) {
+        touch_reset = 0;
+        wait_ms(1);
+        touch_reset = 1;
+    }
+
+    /** Attach a function to call when touch panel int
+     *
+     *  @param fptr A pointer to a void function, or 0 to set as none
+     */
+    void SetCallback(void (*fptr)(void)) {
+        touch_int.fall(fptr);
+    }
+
+    /** Attach a member function to call when touch panel int
+     *
+     *  @param tptr pointer to the object to call the member function on
+     *  @param mptr pointer to the member function to be called
+     */
+    template<typename T>
+    void SetCallback(T* tptr, void (T::*mptr)(void)) {
+        touch_int.fall(tptr, mptr);
+    }
+
+    /** Get the maximum number of simultaneous touches 
+     * 
+     * @return The maximum number of simultaneous touches.
+     */
+    virtual int GetMaxTouchNum(void) = 0;
+
+   /** Get the coordinates
+     *
+     * @param touch_buff_num The number of structure p_touch.
+     * @param p_touch Touch position information.
+     * @return The number of touch points.
+     */
+    virtual int GetCoordinates(int touch_buff_num, touch_pos_t * p_touch) = 0;
+
+private:
+    DigitalOut  touch_reset;
+    InterruptIn touch_int;
+};
+
+#endif