Objective-C Serial - Mac OS X

Question

I'm currently running the followin in Terminal to send a command over USB serial.

/Users/drummerboyx/Library/Scripts/arduino-serial -b 9600 -p /dev/tty.usbserial-A800ev0Z -s 1

Is there a way to do this in Objective-C?

Answer 1

ORSSerialPort is a newer, easier to use alternative to AMSerialPort.

Using ORSSerialPort to open a port and send data can be as simple as this:

ORSSerialPort *serialPort = [ORSSerialPort serialPortWithPath:@"/dev/cu.KeySerial1"];
serialPort.baudRate = [NSNumber numberWithInteger:4800];
[serialPort open];
[serialPort sendData:someData]; // someData is an NSData object
[serialPort close];

Answer 2

Some google-fu found:

• Serial Communication Cocoa Framework (on arduino.cc!)
• AMSerialPort

I know pretty much nothing about it, but the name "IOKit" also sounds pretty promising...

Answer 3

If you just want to run that command from your code, you can use the system function:

#include <stdio.h>
#include <stdlib.h>

system("/Users/drummerboyx/Library/Scripts/arduino-serial -b 9600 -p /dev/tty.usbserial-A800ev0Z -s 1");

You'll need to set your Objective-C source code file extension to .mm, which tells Xcode to compile it as Objective-C++.

Answer 4

If you want to stick to Cocoa - Have a look at NSTask.