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
Diff: WatchTimeService.h
- Revision:
- 6:4a12e0f03381
- Parent:
- 5:2682353a8c32
--- a/WatchTimeService.h Mon Dec 14 22:58:31 2015 +0000 +++ b/WatchTimeService.h Tue Mar 01 13:03:32 2016 +0000 @@ -4,38 +4,73 @@ #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; + const static uint16_t ALARMTIME_STATE_CHARACTERISTIC_UUID = 0xFE34; - WatchTimeService(BLE &ble, uint8_t* pInitialWatchTime) : + WatchTimeService(BLE &ble, uint8_t* pInitialWatchTime, uint8_t* pInitialAlarmTime) : _ble(ble), - _watchTimeVal(WATCHTIME_STATE_CHARACTERISTIC_UUID, pInitialWatchTime, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY) + _watchTimeVal(WATCHTIME_STATE_CHARACTERISTIC_UUID, pInitialWatchTime, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY), + _alarmTimeVal(ALARMTIME_STATE_CHARACTERISTIC_UUID, pInitialAlarmTime, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY) { - GattCharacteristic *charTable[] = {&_watchTimeVal}; + GattCharacteristic *charTable[] = {&_watchTimeVal, &_alarmTimeVal}; GattService watchTimeService(WatchTimeService::WATCHTIME_SERVICE_UUID, charTable, sizeof(charTable) / sizeof(GattCharacteristic *)); _ble.gattServer().addService(watchTimeService); } - void writeWatchTime(uint8_t* pWatchTime) + void writeWatchTime(time_t timeToWrite) { - _ble.gattServer().write(_watchTimeVal.getValueHandle(), pWatchTime, WatchTime_BlockSize); + uint8_t watchTime[WatchTimeService::WatchTime_BlockSize]; + unixTimeToWatchTime(timeToWrite, watchTime); + _ble.gattServer().write(_watchTimeVal.getValueHandle(), watchTime, WatchTime_BlockSize); } - GattAttribute::Handle_t getValueHandle() + GattAttribute::Handle_t getWatchTimeValueHandle() { return _watchTimeVal.getValueHandle(); } + + GattAttribute::Handle_t getAlarmTimeValueHandle() + { + return _alarmTimeVal.getValueHandle(); + } + + static time_t watchTimeToUnixTime(const uint8_t* pWatchTime) + { + struct tm tminfo; + tminfo.tm_year = int(pWatchTime[0])*256 + pWatchTime[1] - 1900; + tminfo.tm_mon = pWatchTime[2] - 1; + tminfo.tm_mday = pWatchTime[3]; + tminfo.tm_hour = pWatchTime[4]; + tminfo.tm_min = pWatchTime[5]; + tminfo.tm_sec = pWatchTime[6]; + tminfo.tm_isdst = -1; + time_t timest = mktime(&tminfo); + return timest; + } + + static void unixTimeToWatchTime(time_t unixTime, uint8_t* pWatchTime) + { + // Convert to localtime + struct tm * timeinfo; + timeinfo = localtime (&unixTime); + pWatchTime[0] = (timeinfo->tm_year + 1900) / 256; + pWatchTime[1] = (timeinfo->tm_year + 1900) % 256; + pWatchTime[2] = timeinfo->tm_mon + 1; + pWatchTime[3] = timeinfo->tm_mday; + pWatchTime[4] = timeinfo->tm_hour; + pWatchTime[5] = timeinfo->tm_min; + pWatchTime[6] = timeinfo->tm_sec; + } private: BLE &_ble; ReadWriteArrayGattCharacteristic<uint8_t, WatchTime_BlockSize> _watchTimeVal; -// GetCurTimeCallbackFn _pGetCurTimeCallback; + ReadWriteArrayGattCharacteristic<uint8_t, WatchTime_BlockSize> _alarmTimeVal; }; #endif /* #ifndef __BLE_WATCHTIME_SERVICE_H__ */