Rob Dobson / BLE_AlarmWatch

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

WatchTimeService.h

Committer:
Bobty
Date:
2015-12-14
Revision:
5:2682353a8c32
Parent:
3:a4b8d67de1b1
Child:
6:4a12e0f03381

File content as of revision 5:2682353a8c32:

// 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__

//typedef void (*GetCurTimeCallbackFn)(uint8_t* curWatchTime)

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 writeWatchTime(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;
//    GetCurTimeCallbackFn _pGetCurTimeCallback;
};

#endif /* #ifndef __BLE_WATCHTIME_SERVICE_H__ */