CODEWITHSUNDEEP
iosobjective-cmultithreadingdelegatessemaphore
macNewbie
macNewbie

Reputation: 3

Using delegate methods with semaphores in Objective C

Hi I am using delegate methods in Objective C and need some help. I have the following functions A and B. B is the delegate function. 

-(BOOL) A{
    int cmd = 73;
    [_serialPort sendData:cmd];
    NSLog("Hello");
    return TRUE;
}

//Delegate function

-(void) B{
    //When some data is received on the serial port function B is called
}

But function A doesn't wait until data is received on the serial port. How do I block function A until some data is received on the serial port? I am using ORSSerialPort library in objective-C.

Upvotes: 0

Views: 128

Answers (1)

Mobile Ben
Mobile Ben

Reputation: 7341

It looks like ORSSerialPort already uses a delegate for when you receive data.

- (void)serialPort:(ORSSerialPort *)serialPort didReceiveData:(NSData *)data {
    // Assuming the delegate has method A
    [self A];
}

-serialPort:didReceiveData: is the delegate method from ORSSerialPort.

The code above will basically wait until data is received, and then once it happened, it will call A.

Upvotes: 1

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