【CoreBluetooth】iOS 系统蓝牙框架

https://www.jianshu.com/p/eb58dcbae5f9

2016.06.07 23:04* 字数 285 阅读 852评论 4喜欢 3

暂时 第一次功能性研究，具体实现，后续添加；

系统分类

iOS 设备，同一时间，只能处于某一种状态：作为中心设备，或者作为周边设备；

一般情况：iOS设备链接智能硬件，使用时作为中心设备，与硬件交互；

玩家对战，当面传输：一个作为中心，一个作为周边设备；

CBCentralManager - 中心设备管理，用于搜索周边设备，对应CBPeripheral使用

CBPeripheralManager - 周边设备管理，用于作为周边设备，对应CBCentral使用

CBPeripheral - 周边设备

CBCentral - 中心设备

CBService - 设备 服务

CBCharacteristic - 设备 服务 特征

CBDescriptor - 设备 服务 特征 描述

CBError - 错误

CBUUID - 唯一码

CBAdvertisementData -

CBATTRequest -

CBCentralManager 中心管理

• 1 初始化 扫描周边设备

// 初始化 manager

self.centerManager = [[CBCentralManager alloc] initWithDelegate:self queue:nil];

// [self.centerManager stopScan];  可以停止扫描

- (void)centralManagerDidUpdateState:(CBCentralManager *)central {

if (central.state == CBCentralManagerStatePoweredOn) {

NSLog(@"蓝牙 - 打开");

// 开始扫描，周边设备

[self.centerManager scanForPeripheralsWithServices:nil options:nil];

} else {

NSLog(@"蓝牙 异常,其他状态自行判断");

}

}

- (void)centralManager:(CBCentralManager *)central willRestoreState:(NSDictionary<NSString *, id> *)dict {

NSLog(@"%@",dict);

}

- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary<NSString *, id> *)advertisementData RSSI:(NSNumber *)RSSI {

if (peripheral.name) {

NSLog(@"扫描到设备 %@",peripheral.name);

}

}

• 2 连接设备

// 某处，调用链接设备

[self.centerManager connectPeripheral:currentPer options:nil];

currentPer.delegate = self;

- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral {

NSLog(@"链接成功");

}

- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(nullable NSError *)error {

NSLog(@"链接失败");

}

- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(nullable NSError *)error {

NSLog(@"设备断开链接");

}

CBPeripheral 设备信息

属性

delegate：代理

name：设备名称

RSSI：设备信号强度

state：设备链接状态

services：设备提供的服务

下面，方法都对应了代理

• 扫描 设备的某些 UUID 的服务

[currentPer discoverServices:@[@"UUID"]];

- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(nullable NSError *)error {

NSLog(@"%@",service.UUID);

}

• 扫描 设备的某服务的 UUID 服务？

[currentPer discoverIncludedServices:@[] forService:service];

- (void)peripheral:(CBPeripheral *)peripheral didDiscoverIncludedServicesForService:(CBService *)service error:(NSError *)error {

NSLog(@"%@",service.UUID);

}

• 扫描 设备的某个服务中的 UUID 特性

[peripheral discoverCharacteristics:@[] forService:peripheral.services.lastObject];

- (void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(nullable NSError *)error {

NSLog(@"%@",service.characteristics);

}

• 扫描 设备的某个特征 UUID

[peripheral discoverDescriptorsForCharacteristic:peripheral.services.lastObject.characteristics.lastObject];

- (void)peripheral:(CBPeripheral *)peripheral didDiscoverDescriptorsForCharacteristic:(CBCharacteristic *)characteristic error:(nullable NSError *)error {

NSLog(@"%@",characteristic);

}

• 获取设备 蓝牙信号强度

[peripheral readRSSI];

- (void)peripheral:(CBPeripheral *)peripheral didReadRSSI:(NSNumber *)RSSI error:(nullable NSError *)error {

NSLog(@"%@",RSSI.stringValue);

}

• 读取 特征

[peripheral readValueForCharacteristic:peripheral.services.lastObject.characteristics.lastObject];

- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error {

NSLog(@"%@",characteristic);

}

• 读取 描述

[peripheral readValueForDescriptor:peripheral.services.lastObject.characteristics.lastObject.descriptors.lastObject];

- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForDescriptor:(CBDescriptor *)descriptor error:(nullable NSError *)error {

NSLog(@"%@",descriptor);

}

• 添加 监听

[peripheral setNotifyValue:YES forCharacteristic:peripheral.services.lastObject.characteristics.lastObject];

- (void)peripheral:(CBPeripheral *)peripheral didUpdateNotificationStateForCharacteristic:(CBCharacteristic *)characteristic error:(nullable NSError *)error {

NSLog(@"%@",characteristic);

}

• 写入描述

[peripheral writeValue:[NSData data] forDescriptor:peripheral.services.lastObject.characteristics.lastObject.descriptors.lastObject];

- (void)peripheral:(CBPeripheral *)peripheral didWriteValueForDescriptor:(CBDescriptor *)descriptor error:(nullable NSError *)error {

NSLog(@"%@",descriptor);

}

• 写入 特征

[peripheral writeValue:[NSData data] forCharacteristic:peripheral.services.lastObject.characteristics.lastObject type:CBCharacteristicWriteWithResponse];

- (void)peripheral:(CBPeripheral *)peripheral didWriteValueForCharacteristic:(CBCharacteristic *)characteristic error:(nullable NSError *)error {

NSLog(@"%@",characteristic);

}

其他

// 最大数据量？

NSLog(@"%zi",[peripheral maximumWriteValueLengthForType:CBCharacteristicWriteWithResponse]);

// 修改 名称

- (void)peripheralDidUpdateName:(CBPeripheral *)peripheral {

NSLog(@"%@",peripheral);

}

// 修改 服务

- (void)peripheral:(CBPeripheral *)peripheral didModifyServices:(NSArray<CBService *> *)invalidatedServices {

NSLog(@"%@",peripheral);

}

// 修改 RSSI

- (void)peripheralDidUpdateRSSI:(CBPeripheral *)peripheral error:(nullable NSError *)error {

NSLog(@"%@",peripheral.RSSI.stringValue);

}

CBService CBMutableService 服务

作为中心获取，作为周边创建

// 服务 包含 的 服务

for (CBService *ser in service.includedServices) {

NSLog(@"%@",ser.UUID);

}

// 服务 包含特征

for (CBCharacteristic *charcter in service.characteristics) {

NSLog(@"%@",charcter.UUID);

}

CBCharacteristic CBMutableCharacteristic 特征

作为中心获取，作为周边创建

CBCharacteristicProperties property = characteristic.properties;// 读写等属性

NSData *data = characteristic.value;// 特征数据

// 特征 包含的描述

for (CBDescriptor *desc in characteristic.descriptors) {

NSLog(@"%@",desc.UUID);

}

CBDescriptor CBMutableDescriptor

作为中心获取，作为周边创建

NSLog(@"%@",descriptor.value);

1