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#ifndef __BLE_CURRENT_TIME_SERVICE_H__
#define __BLE_CURRENT_TIME_SERVICE_H__
#include "BLEDevice.h"
/**
* @class CurrentTimeService
* @brief BLE Time Service. This service provides the current time and date.
* Service: https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.service.current_time.xml
* Date Time: https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.characteristic.date_time.xml
* Day of Week: https://www.bluetooth.com/specifications/gatt/viewer?attributeXmlFile=org.bluetooth.characteristic.day_of_week.xml
*/
class CurrentTimeService {
public:
const static uint16_t UUID_CURRENT_TIME_SERVICE = 0x1805;
const static uint16_t UUID_DATE_TIME_CHAR = 0x2A08;
const static uint16_t UUID_DAY_OF_WEEK_CHAR = 0x2A09;
typedef uint8_t DayOfWeekType_t;
typedef struct DateTimeType_t{
uint16_t year;
uint8_t month;
uint8_t day;
uint8_t hours;
uint8_t minutes;
uint8_t seconds;
} DateTimeType_t;
/**
* @brief CurrentTimeService constructor.
* @param ble Reference to BLE device.
*/
CurrentTimeService(BLEDevice& _ble) :
ble(_ble),
dateTimeCharacteristic(UUID_DATE_TIME_CHAR, &dateTime, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY),
dayOfWeekCharacteristic(UUID_DAY_OF_WEEK_CHAR, &dayOfWeek, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY)
{
static bool serviceAdded = false; /* We should only ever need to add the information service once. */
if (serviceAdded) {
return;
}
GattCharacteristic *charTable[] = { &dateTimeCharacteristic,
&dayOfWeekCharacteristic };
GattService currentTimeService(UUID_CURRENT_TIME_SERVICE, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
ble.addService(currentTimeService);
serviceAdded = true;
}
/**
* @brief Update date time characteristic.
* @param newDateTimeVal New date time measurement.
*/
void updateDateTime(uint16_t year, uint8_t month, uint8_t day, uint8_t hours, uint8_t minutes, uint8_t seconds)
{
dateTime = (DateTimeType_t) {
(uint16_t)year,
(uint8_t)month,
(uint8_t)day,
(uint8_t)hours,
(uint8_t)minutes,
(uint8_t)seconds
};
ble.updateCharacteristicValue(dateTimeCharacteristic.getValueHandle(), (uint8_t *) &dateTime, sizeof(DateTimeType_t));
}
/**
* @brief Update day of week characteristic.
* @param newDayOfWeekVal New day of week measurement.
*/
void updateDayOfWeek(DayOfWeekType_t day)
{
dayOfWeek = (DayOfWeekType_t)day;
ble.updateCharacteristicValue(dayOfWeekCharacteristic.getValueHandle(), (uint8_t *) &dayOfWeek, sizeof(DayOfWeekType_t));
}
private:
BLEDevice& ble;
DateTimeType_t dateTime;
DayOfWeekType_t dayOfWeek;
ReadOnlyGattCharacteristic<DateTimeType_t> dateTimeCharacteristic;
ReadOnlyGattCharacteristic<DayOfWeekType_t> dayOfWeekCharacteristic;
};
#endif /* #ifndef __BLE_CURRENT_TIME_SERVICE_H__*/
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