Heartbeat like vibration with private API AudioServicesPlaySystemSoundWithVibration

gistfile1.txt

        NSMutableDictionary* pulsePatternsDict = [@{} mutableCopy];
        NSMutableArray* pulsePatternsArray = [@[] mutableCopy];
        
        // beat for 100 times
        for (NSInteger i=0; i<100; i++){
            [pulsePatternsArray addObject:@(YES)]; // vibrate for 100ms
            [pulsePatternsArray addObject:@(100)];
            
            [pulsePatternsArray addObject:@(NO)];  //stop for 1200ms * 0.3
            [pulsePatternsArray addObject:@(1200*0.3)];
            
            [pulsePatternsArray addObject:@(YES)];  //vibrate for 100ms
            [pulsePatternsArray addObject:@(100)];
            
            [pulsePatternsArray addObject:@(NO)];    //stop for 1200ms * 0.5
            [pulsePatternsArray addObject:@(1200*0.5)];
        }
        
        [pulsePatternsDict setObject:pulsePatternsArray forKey:@"VibePattern"];
        [pulsePatternsDict setObject:[NSNumber numberWithInt:1.0] forKey:@"Intensity"];
        
        AudioServicesPlaySystemSoundWithVibration(kSystemSoundID_Vibrate, nil, pulsePatternsDict);