iOS蓝牙4.0开发

1建立中心角色

#import <CoreBluetooth/CoreBluetooth.h>

CBCentralManager *manager;

manager = [[CBCentralManager alloc] initWithDelegate:self queue:nil];

2扫描外设（discover）

[manager scanForPeripheralsWithServices:nil options:options];

3连接外设(connect)

- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI

{

if([peripheral.name  isEqualToString:BLE_SERVICE_NAME]){

[self connect:peripheral];

}

s);

}

-(BOOL)connect:(CBPeripheral *)peripheral{

self.manager.delegate = self;

[self.manager connectPeripheral:peripheral

options:[NSDictionary dictionaryWithObject:[NSNumber numberWithBool:YES] forKey:CBConnectPeripheralOptionNotifyOnDisconnectionKey]];

}

4扫描外设中的服务和特征(discover)

- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral {            NSLog(@"Did connect to peripheral: %@", peripheral);    _testPeripheral = peripheral;            [peripheral setDelegate:self];

//查找服务    [peripheral discoverServices:nil];              }

- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error {              NSLog(@"didDiscoverServices");            if (error)    {        NSLog(@"Discovered services for %@ with error: %@", peripheral.name, [error localizedDescription]);                    if ([self.delegate respondsToSelector:@selector(DidNotifyFailConnectService:withPeripheral:error:)])            [self.delegate DidNotifyFailConnectService:nil withPeripheral:nil error:nil];                    return;    }              for (CBService *service in peripheral.services)    {          //发现服务        if ([service.UUID isEqual:[CBUUID UUIDWithString:UUIDSTR_ISSC_PROPRIETARY_SERVICE]])        {            NSLog(@"Service found with UUID: %@", service.UUID);//查找特征          [peripheral discoverCharacteristics:nil forService:service];            break;        }                          } }12345678910111213141516171819202122- (void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error{        if (error)    {        NSLog(@"Discovered characteristics for %@ with error: %@", service.UUID, [error localizedDescription]);                [self error];        return;    }        NSLog(@"服务：%@",service.UUID);    for (CBCharacteristic *characteristic in service.characteristics)    {     //发现特征            if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@"xxxxxxx"]]) {                NSLog(@"监听：%@",characteristic);//监听特征               [self.peripheral setNotifyValue:YES forCharacteristic:characteristic];            }            }}

5与外设做数据交互(读 与 写)

读

- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error{    if (error)    {        NSLog(@"Error updating value for characteristic %@ error: %@", characteristic.UUID, [error localizedDescription]);        self.error_b = BluetoothError_System;        [self error];        return;    }    //    NSLog(@"收到的数据：%@",characteristic.value);    [self decodeData:characteristic.value];}

写

12NSData *d2 = [[PBABluetoothDecode sharedManager] HexStringToNSData:@"0x02"];                [self.peripheral writeValue:d2 forCharacteristic:characteristic type:CBCharacteristicWriteWithoutResponse];