Applescript Read Serial Port

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Applescript Read Serial Port

To start, I'm fairly new to Applescript. At the expense of buying an ethernet shield for my Arduino, I decided to dedicate a serial port to it (over usb). Crack Paint Tool Sai 1.1.0.

So I have a small project that I am working on and I need some basic commands to arduino. Each command is one character long. For the test I have application that turns on a LED if a 'l' character is recieved. So I tryed that with the serial monitor - it wroks. But now I want to turn that LED on with appleScript. I found a serialPort X (applescript extension that should enable serial communication). So I can open the port to the arduino.

But I can't figure out how to turn the LED on with it. If I do this. Code: serialport write 'l' to portRef that should send an l character to the arduino and turn on the LED - but it doesn't. I see the serial RX/TX LEDs blink on the arduino and the LED blinks too - but it doesn't stay on (it should stay on). So why isn't this working? EDIT: The above script works if arduino IDE is in 'Serial Monitor' mode. But if the arduino software isn't working the thing wont work.

EDIT2: I also tryed this code: And the results are the same. The thing works if the arduino IDE is in 'Serial Monitoring' but if it isn't I just get a LED that blinks when I press enter. Well since I tryed it with normal C that works on linux/windows/mac and I got the same results the problem probably isn't with applescript. But somewhere else.

I also tryed the same code with another arduino (Duemilanove too but with Atmega 328). And the results are almost identical. About disabling the auto reset - i don't know if this is the problem. EDIT: Disabled the autoreset by wiring 100ohm resistor between +5V and reset. And now the whole thing is working. But as I read this should only be used as a temp solution. I need something thal last a little longer.

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