Diff: TouchKey_7_1inch.cpp

Revision:

0:da3d7ba2674b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TouchKey_7_1inch.cpp	Wed Jun 29 03:28:06 2016 +0000
@@ -0,0 +1,70 @@
+/* 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_7_1inch.h"
+
+TouchKey_7_1inch::TouchKey_7_1inch(PinName tprst, PinName tpint, PinName sda, PinName scl) :
+ TouchKey(tprst, tpint), i2c(sda, scl) {
+}
+
+int TouchKey_7_1inch::GetMaxTouchNum(void) {
+    return 2;
+}
+
+int TouchKey_7_1inch::GetCoordinates(int touch_buff_num, touch_pos_t * p_touch) {
+    char buf[10];
+    stx_report_data_t *pdata;
+    touch_pos_t * wk_touch;
+    int count = 0;
+    int i;
+    int read_size;
+
+    if (touch_buff_num > GetMaxTouchNum()) {
+        touch_buff_num =  GetMaxTouchNum();
+    }
+    if (touch_buff_num < 2) {
+        read_size = 6;
+    } else {
+        read_size = 10;
+    }
+
+    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((0x55 << 1), buf, read_size) == 0) {
+            pdata = (stx_report_data_t *)buf;
+            if (pdata->fingers) {
+                for (i = 0; i < touch_buff_num; i++) {
+                    if (pdata->xyz_data[i].valid) {
+                        wk_touch        = &p_touch[i];
+                        wk_touch->x     = (pdata->xyz_data[i].x_h << 8) | pdata->xyz_data[i].x_l;
+                        wk_touch->y     = (pdata->xyz_data[i].y_h << 8) | pdata->xyz_data[i].y_l;
+                        wk_touch->valid = true;
+                        count++;
+                    }
+                }
+            }
+        }
+    }
+
+    return count;
+}
+
+