【iOS与EV3混合机器人编程系列之7】通过蓝牙控制EV3

- (void)connectEV3
{
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(accessoryDidConnect:) name:EAAccessoryDidConnectNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(accessoryDidDisconnect:) name:EAAccessoryDidDisconnectNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(sessionDataReceived:) name:EADSessionDataReceivedNotification object:nil];
    [[EAAccessoryManager sharedAccessoryManager] registerForLocalNotifications];
    self.sessionController = [EADSessionController sharedController];
    accessoryList = [[NSMutableArray alloc] initWithArray:[[EAAccessoryManager sharedAccessoryManager] connectedAccessories]];
    NSLog(@"accessory list:%@",accessoryList);
    if(accessoryList != nil){
        [self.sessionController setupControllerForAccessory:[accessoryList firstObject]
                                         withProtocolString:@"COM.LEGO.MINDSTORMS.EV3"];
       isConnected = [self.sessionController openSession];
        
    }
}

- (void)accessoryDidConnect:(NSNotification *)notification {
    NSLog(@"EV3 did connect!");
    EAAccessory *connectedAccessory = [[notification userInfo] objectForKey:EAAccessoryKey];
    [self.sessionController setupControllerForAccessory:connectedAccessory
                                   withProtocolString:@"COM.LEGO.MINDSTORMS.EV3"];
    isConnected = [self.sessionController openSession];
    
    
}

- (IBAction)go:(id)sender {
    if (isConnected) {
        NSData *data = [EV3DirectCommander turnMotorAtPort:EV3OutputPortB power:50];
        [[EADSessionController sharedController] writeData:data];
        isGo = YES;
    }
}

3 为什么用蓝牙？