#import "ViewController.h"
#import <CoreBluetooth/CoreBluetooth.h>
@interface ViewController () <CBCentralManagerDelegate,CBPeripheralDelegate>
/** 中心管理者 */
@property(nonatomic,strong)CBCentralManager * cbManager ;
/** 外设 */
@property(nonatomic,strong)CBPeripheral * cbPeripheral ;
@property(nonatomic,strong)CBCharacteristic * cbchar1 ;
@property(nonatomic,strong)CBCharacteristic * cbchar2 ;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
[self cbManager];
/**
在ios10中需要在plist添加新的字段来获取蓝牙的访问权限
<key>NSBluetoothPeripheralUsageDescription</key>
<string>App需要您的同意,才能访问蓝牙</string>
*/
}
-(CBCentralManager *)cbManager
{
if (_cbManager ==nil) {
_cbManager = [[CBCentralManager alloc]initWithDelegate:self queue:dispatch_get_main_queue()];
}
return _cbManager;
}
//�1.检查蓝牙状态
-(void)centralManagerDidUpdateState:(CBCentralManager *)central
{
switch (central.state) {
case CBCentralManagerStatePoweredOn:
[central scanForPeripheralsWithServices:nil options:nil];
NSLog(@"蓝牙开启");
break;
case CBCentralManagerStatePoweredOff:
NSLog(@"蓝牙状态关闭");
case CBCentralManagerStateUnknown:
NSLog(@"蓝牙状态为止");
break;
case CBCentralManagerStateResetting:
NSLog(@"蓝牙状态重置");
break;
case CBCentralManagerStateUnsupported:
NSLog(@"不支持蓝牙");
break;
case CBCentralManagerStateUnauthorized:
NSLog(@"蓝牙未经授权");
break;
}
}
//2.app扫描到外设会进入该方法
-(void)centralManager:(CBCentralManager *)central
didDiscoverPeripheral:(CBPeripheral *)peripheral
advertisementData:(NSDictionary *)advertisementData
RSSI:(NSNumber *)RSSI
{
//判断蓝牙的名称，因官方没有SDK无法获取MAC地址，暂时以外设的名字连接 ABS是绝对值宏，因扫描到的外设信号都是"-",[如果无法判断蓝牙的名称可以从app stroe下一个蓝牙助手就可以看到附近的蓝牙设备]
if ([peripheral.name hasPrefix:@"Bioland-BGM"]&&(ABS(RSSI.integerValue)>20)){
self.cbPeripheral = peripheral;
//app开始连接外设
[self.cbManager connectPeripheral:self.cbPeripheral options:nil];
}
}
//2.1扫描到services调用该方法
-(void)peripheral:(CBPeripheral *)peripheral
didDiscoverServices:(NSError *)error
{
for (CBService *service in peripheral.services) {
NSLog(@"%@",service.UUID);
[peripheral discoverCharacteristics:nil forService:service];
}
}
//2.2扫描到Characteristics
-(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
{
if (error) {
NSLog(@"error Discovered characteristics for %@ with error: %@", service.UUID, [error localizedDescription]);
return;
}
//从service中遍历所有的特征
for (CBCharacteristic *characteristic in service.characteristics) {
//获取Characteristic的值，读到数据会进入方法：-(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
[peripheral readValueForCharacteristic:characteristic];
NSLog(@"characteristic= %@",characteristic);
//搜索Characteristic的Descriptors，读到数据会进入方法：-(void)peripheral:(CBPeripheral *)peripheral didDiscoverDescriptorsForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
[peripheral discoverDescriptorsForCharacteristic:characteristic];
NSLog(@"Characteristic.Descriptors =%@",characteristic);
//判断特征值中的uuid如果包含1001就订阅这个特征，订阅后会收到返回值
//每个外设的特征不是相同的需要参照硬件商提供的蓝牙开发文档
if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@"1001"]]) {
self.cbchar1 = characteristic;
[self.cbPeripheral setNotifyValue:YES forCharacteristic:characteristic];
}
if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@"1002"]]) {
self.cbchar2 = characteristic;
[self.cbPeripheral setNotifyValue:YES forCharacteristic:characteristic];
}
}
}
//3.中心管理者连接外设成功时会调用该方法
-(void)centralManager:(CBCentralManager *)central
didConnectPeripheral:(CBPeripheral *)peripheral
{
self.cbPeripheral.delegate = self;
[self.cbPeripheral discoverServices:nil];
NSLog(@"连接成功");
}
//4.搜索到Characteristic的Descriptors
-(void)peripheral:(CBPeripheral *)peripheral didDiscoverDescriptorsForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error{
//打印出Characteristic和他的Descriptors
NSLog(@"characteristic uuid:%@",characteristic.UUID);
for (CBDescriptor *d in characteristic.descriptors) {
NSLog(@"详情 uuid:%@",d.UUID);
}
}
//4.1获取外设的Characteristicsde值，在这个方法中外设会把我们订阅的特征的值以16进制的格式返回，只要打印就可以看到具体的详情值。
-(void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
NSLog(@"peripheral:%@ characteristic.description:%@---%@",peripheral.description,characteristic.description,error.description);
}
//4.2获取Characteristics的 descriptor的值
- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForDescriptor:(nonnull CBDescriptor *)descriptor error:(nullable NSError *)error
{
//打印出DescriptorsUUID 和value
//这个descriptor都是对于characteristic的描述，一般都是字符串，所以这里我们转换成字符串去解析
NSLog(@"descriptor.UUID:%@ value:%@",descriptor.UUID, descriptor.value);
}
// 5.将数据写入特征,自定义方法
-(void)XC_writeCharacteristic:(CBPeripheral *)peripheral
characteristic:(CBCharacteristic *)characteristic
value:(NSData *)value
{
/*
打印出特征的权限(characteristic.properties),可以看到有很多种,这是一个NS_OPTIONS的枚举,可以是多个值
常见的又read,write,noitfy,indicate.知道这几个基本够用了,前俩是读写权限,后俩都是通知,俩不同的通知方式
*/
NSLog(@"characteristic.properties:%lu", (unsigned long)characteristic.properties);
//只有 characteristic.properties 有write的权限才可以写
if(characteristic.properties & CBCharacteristicPropertyWrite){
[peripheral writeValue:value forCharacteristic:characteristic type:CBCharacteristicWriteWithResponse];
}else{
NSLog(@"该字段不可写！");
}
}
//5.1写入数据后的回调
- (void)peripheral:(CBPeripheral *)peripheral
didWriteValueForCharacteristic:(CBCharacteristic *)
characteristic error:(nullable NSError *)error
{
//获取特征中1002的特征值
[self.cbperipheral readValueForCharacteristic:self.cbchar2];
if (error) {
NSLog(@"erro = %@",error.description);
}
}
// 6.设置通知
- (void)XC_peripheral:(CBPeripheral *)peripheral setNotifyForCharacteristic:(CBCharacteristic *)characteristic
{
// 设置通知, 数据会进入 peripheral:didUpdateValueForCharacteristic:error:方法
[peripheral setNotifyValue:YES forCharacteristic:characteristic];
}
//5.1写入数据后的回调
- (void)peripheral:(CBPeripheral *)peripheral
didWriteValueForCharacteristic:(CBCharacteristic *)
characteristic error:(nullable NSError *)error
{
//获取特征中1002的特征值
[self.cbperipheral readValueForCharacteristic:self.cbchar2];
if (error) {
NSLog(@"erro = %@",error.description);
}
}
// 6.1取消通知
- (void)XC_peripheral:(CBPeripheral *)peripheral cancelNotifyForCharacteristic:(CBCharacteristic *)characteristic
{
[peripheral setNotifyValue:NO forCharacteristic:characteristic];
}
// 7.断开连接
- (void)XC_cbManger:(CBCentralManager *)cbManger stopScanAndDisConnectWithPeripheral:(CBPeripheral *)
peripheral
{
// 停止扫描
[cbManger stopScan];
// 断开连接
[cbManger cancelPeripheralConnection:peripheral];
}
//除了以上函数的实现定义还需要对蓝牙失败�操作做响应不然会app会直接崩溃
//外设链接失败
-(void)centralManager:(CBCentralManager *)central
didFailToConnectPeripheral:(CBPeripheral *)peripheral
error:(NSError *)error
{
NSLog(@"外设链接失败 = %@",error);
}
//外设断开连接
- (void)centralManager:(CBCentralManager *)central
didDisconnectPeripheral:(CBPeripheral *)peripheral
error:(NSError *)error
{
NSLog(@"外设断开链接 = %@",error);
}
@end
(http://www.jianshu.com/p/d71d493d9e8a)
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