Diff: CurrentTimeChar.h

Revision:

0:f71931ae3db1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/CurrentTimeChar.h	Fri Jul 10 21:28:56 2015 +0000
@@ -0,0 +1,150 @@
+/*******************************************************************************
+ * Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+ * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of Maxim Integrated
+ * Products, Inc. shall not be used except as stated in the Maxim Integrated
+ * Products, Inc. Branding Policy.
+ *
+ * The mere transfer of this software does not imply any licenses
+ * of trade secrets, proprietary technology, copyrights, patents,
+ * trademarks, maskwork rights, or any other form of intellectual
+ * property whatsoever. Maxim Integrated Products, Inc. retains all
+ * ownership rights.
+ *******************************************************************************
+ */
+
+#ifndef __BLE_CURRENTTIMECHAR_H__
+#define __BLE_CURRENTTIMECHAR_H__
+
+#include "mbed.h"
+#include "Characteristic.h"
+
+/**
+ * @class   CurrentTimeChar
+ * @brief   CurrentTimeChar characteristic class.
+ * @details Sub class from the characteristic class.
+ */
+
+class CurrentTimeChar : public Characteristic
+{
+public:
+
+    typedef enum {
+        MON = 1,
+        TUE = 2,
+        WED = 3,
+        THU = 4,
+        FRI = 5,
+        SAT = 6,
+        SUN = 7
+    } day_of_week_t;
+
+    static const unsigned OFFSET_OF_YEAR = 0;
+    static const unsigned OFFSET_OF_MONTH = OFFSET_OF_YEAR + 2;
+    static const unsigned OFFSET_OF_DAY = OFFSET_OF_MONTH + 1;
+    static const unsigned OFFSET_OF_HOUR = OFFSET_OF_DAY + 1;
+    static const unsigned OFFSET_OF_MIN = OFFSET_OF_HOUR + 1;
+    static const unsigned OFFSET_OF_SEC = OFFSET_OF_MIN + 1;
+    static const unsigned OFFSET_OF_DOW = OFFSET_OF_SEC + 1;
+    static const unsigned OFFSET_OF_SSEC = OFFSET_OF_DOW + 1;
+    static const unsigned OFFSET_OF_REASON = OFFSET_OF_SSEC + 1;
+
+    static const unsigned CHAR_BYTES = OFFSET_OF_REASON + 1;
+
+    CurrentTimeChar() : 
+        gattChar(GattCharacteristic::UUID_CURRENT_TIME_CHAR, bytes, CHAR_BYTES, CHAR_BYTES,  
+            GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | 
+            GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY |
+            GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE)
+    {
+        // Default no timestamp and zero for the value
+        memset(bytes, 0x0, CHAR_BYTES);
+    }
+
+    ~CurrentTimeChar() {}
+
+    virtual GattCharacteristic *getChar(void)
+    {
+        return &gattChar;
+    }
+
+    virtual uint8_t getNumBytes(void)
+    {
+        return CHAR_BYTES;
+    }
+
+    virtual uint8_t *getBytes(void)
+    {
+        return bytes;
+    }
+
+    // Update the characteristic value
+    void update(time_t current_time)
+    {
+        // Convert time_t to date_time
+        date_time(current_time, &bytes[OFFSET_OF_YEAR]);
+
+        // Set SSec to 0
+        bytes[OFFSET_OF_SSEC] = 0;
+
+        // Set day of the week
+        struct tm ts = *localtime(&current_time);
+        if(ts.tm_wday == 0) {
+            bytes[OFFSET_OF_DOW] = 7;
+        } else {
+            bytes[OFFSET_OF_DOW] = ts.tm_wday;
+        }
+    }
+
+    // Update the characteristic value with the RTC
+    void update(void)
+    {
+        update(time(NULL));
+    }
+
+    // Get the characteristic value
+    time_t get_value(void)
+    {
+        struct tm ts;
+        ts.tm_year = (bytes[OFFSET_OF_YEAR + 1] << 8) + 
+            bytes[OFFSET_OF_YEAR] - 1900;
+
+        ts.tm_mon = bytes[OFFSET_OF_MONTH] - 1;
+        ts.tm_mday = bytes[OFFSET_OF_DAY];
+        ts.tm_hour = bytes[OFFSET_OF_HOUR];
+        ts.tm_min = bytes[OFFSET_OF_MIN];
+        ts.tm_sec = bytes[OFFSET_OF_SEC];
+
+        return mktime(&ts);
+    }
+
+    // Update the RTC with the characteristic value
+    void update_rtc()
+    {
+        set_time(this->get_value());
+    }
+
+private:
+    GattCharacteristic      gattChar;
+    uint8_t                 bytes[CHAR_BYTES];
+};
+
+#endif /* #ifndef __BLE_CURRENTTIMECHAR_H__*/