iOS藍牙4.0開發

<pre name="code" class="objc">//藍牙系統庫

#import <CoreBluetooth/CoreBluetooth.h>

//必須要由UUID來唯一標示對應的service和characteristic

#define kServiceUUID @"5C476471-1109-4EBE-A826-45B4F9D74FB9"

#define kCharacteristicHeartRateUUID @"82C7AC0F-6113-4EC9-92D1-5EEF44571398"

#define kCharacteristicBodyLocationUUID @"537B5FD6-1889-4041-9C35-F6949D1CA034"

@interface ViewController ()<CBCentralManagerDelegate,CBPeripheralDelegate>

@property (nonatomic,strong)CBCentralManager * <span style="font-family: Arial, Helvetica, sans-serif;">manager; </span>

@property (nonatomic,strong)CBPeripheral     * peripheral;

@end

1.建立中心角色

#import <CoreBluetooth/CoreBluetooth.h> 
- (void)viewDidLoad

{

    [super viewDidLoad];

    //初始化藍牙 central manager

    _centralManager = [[CBCentralManager alloc]initWithDelegate:self queue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0) options:nil];    

}

2.掃描外設(discover)

[manager scanForPeripheralsWithServices:nil options:options]; 

3.連接外設

- (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.掃描外設中的服務和特徵(discover)

- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral 
{ 
       
    NSLog(@"Did connect to peripheral: %@", peripheral); 
    _testPeripheral = peripheral; 
       
    [peripheral setDelegate:self];  <br>//查找服務
    [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) 
    { 
         //發現服務
        if ([service.UUID isEqual:[CBUUID UUIDWithString:UUIDSTR_ISSC_PROPRIETARY_SERVICE]]) 
        { 
            NSLog(@"Service found with UUID: %@", service.UUID);  <br>//查找特徵
            [peripheral discoverCharacteristics:nil forService:service]; 
            break; 
        } 
           
           
    } 
}

- (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(@"服務：%@",service.UUID);
    for (CBCharacteristic *characteristic in service.characteristics)
    {
       //發現特徵
            if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:@"xxxxxxx"]]) {
                NSLog(@"監聽：%@",characteristic);<br>//監聽特徵
                [self.peripheral setNotifyValue:YES forCharacteristic:characteristic];
            }
         
    }
}

5.與外設做數據交互

讀

- (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(@"收到的數據：%@",characteristic.value);
    [self decodeData:characteristic.value];
}

寫

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