service: Add various LE advertising constants

// BLE operations.

enum BLEStatus {

  BLE_STATUS_SUCCESS = 0,

  BLE_STATUS_ADV_ERROR_DATA_TOO_LARGE = 1,

  BLE_STATUS_ADV_ERROR_TOO_MANY_ADVERTISERS = 2,

  BLE_STATUS_ADV_ERROR_ALREADY_STARTED = 3,

  BLE_STATUS_ADV_ERROR_FEATURE_UNSUPPORTED = 5,

  BLE_STATUS_FAILURE = 0x101,

  // TODO(armansito): Add ATT protocol error codes

};

// Advertising interval for different modes.

const int kAdvertisingIntervalHighMs = 1000;

const int kAdvertisingIntervalMediumMs = 250;

const int kAdvertisingIntervalLowMs = 100;

// Add some randomness to the advertising min/max interval so the controller can

// do some optimization.

// TODO(armansito): I took this directly from packages/apps/Bluetooth but based

// on code review comments this constant and the accompanying logic doesn't make

// sense. Let's remove this constant and figure out how to properly calculate

// the Max. Adv. Interval. (See http://b/24344075).

const int kAdvertisingIntervalDeltaUnit = 10;

// Advertising types (ADV_IND, ADV_SCAN_IND, etc.) that are exposed to

// applications.

const int kAdvertisingEventTypeConnectable = 0;

const int kAdvertisingEventTypeScannable = 2;

const int kAdvertisingEventTypeNonConnectable = 3;

// Advertising channels. These should be kept the same as those defined in the

// stack.

const int kAdvertisingChannel37 = (1 << 0);

const int kAdvertisingChannel38 = (1 << 1);

const int kAdvertisingChannel39 = (1 << 2);

const int kAdvertisingChannelAll =

    (kAdvertisingChannel37 | kAdvertisingChannel38 | kAdvertisingChannel39);

// Various Extended Inquiry Response fields types that are used for advertising

// data fields as defined in the Core Specification Supplement.

const uint8_t kEIRTypeFlags = 0x01;

const uint8_t kEIRTypeIncomplete16BitUUIDs = 0x02;

const uint8_t kEIRTypeComplete16BitUUIDs = 0x03;

const uint8_t kEIRTypeIncomplete32BitUUIDs = 0x04;

const uint8_t kEIRTypeComplete32BitUUIDs = 0x05;

const uint8_t kEIRTypeIncomplete128BitUUIDs = 0x06;

const uint8_t kEIRTypeComplete128BitUUIDs = 0x07;

const uint8_t kEIRTypeManufacturerSpecificData = 0xFF;

}  // namespace bluetooth