Auto updating alarm watch - accepts alarm settings from a BLE device like a Raspberry Pi and buzzes at the appropriate time - also displays binary time

Dependencies:   BLE_API mbed-src nRF51822 nrf51_rtc

Revision:
3:a4b8d67de1b1
Child:
5:2682353a8c32
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WatchTimeService.h	Mon Jul 27 15:25:59 2015 +0000
@@ -0,0 +1,36 @@
+// BLE Service for Watch Time
+// To allow a watch device to be told the current time
+
+#ifndef __BLE_WATCHTIME_SERVICE_H__
+#define __BLE_WATCHTIME_SERVICE_H__
+
+class WatchTimeService {
+public:
+
+    static const int WatchTime_BlockSize = 7;
+    const static uint16_t WATCHTIME_SERVICE_UUID              = 0xFE32;
+    const static uint16_t WATCHTIME_STATE_CHARACTERISTIC_UUID = 0xFE33;
+
+    WatchTimeService(BLE &_ble, uint8_t* pInitialWatchTime) :
+        ble(_ble), watchTimeVal(WATCHTIME_STATE_CHARACTERISTIC_UUID, pInitialWatchTime, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY)
+    {
+        GattCharacteristic *charTable[] = {&watchTimeVal};
+        GattService watchTimeService(WatchTimeService::WATCHTIME_SERVICE_UUID, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
+        ble.gattServer().addService(watchTimeService);
+    }
+
+    void sendWatchTime(uint8_t* pWatchTime) {
+        ble.gattServer().write(watchTimeVal.getValueHandle(), pWatchTime, WatchTime_BlockSize);
+    }
+
+    GattAttribute::Handle_t getValueHandle()
+    {
+        return watchTimeVal.getValueHandle();
+    }
+
+private:
+    BLE &ble;
+    ReadWriteArrayGattCharacteristic<uint8_t, WatchTime_BlockSize> watchTimeVal;
+};
+
+#endif /* #ifndef __BLE_WATCHTIME_SERVICE_H__ */