1. Applescript Read Serial Portable
2. Applescript Read Serial Port Orange

If I try to use the actual port name.it always says it cannot connect, it can only connect if I use item 1, no idea why but thats okay for now. So if I do not have serial monitor open and I run my applescript this happens. My LCD is reset to its initial state with an X in the upper left corner.now if I open my serial monitor.

This article is intended to help you understand the basics of the hardware and software (protocol) standards for RS232. It will also show you how to use the COM port reader software to read data traveling through RS232 devices in real time.

Contents

• May 01, 2017.
• Also note that this event is running on a separate thread. We recommend that your application uses a delegate to update controls on the main thread. For more information about the serial port communication, read two articles: Communication on a serial port in NET 2.0 and Programming Serial Ports Using Visual Basic 2005. I put a button and two.
• After reading the file contents into a list, I then use the following code to have my computer randomly 'speak' one of the lines that I retrieved from the file: set numThanks to count of thankYous set rn to (random number from 1 to numThanks) set reply to item rn of thankyous say reply An AppleScript file reading function.
• Micro:bit serial. The micro:bit has serial support, which is a fairly universal way for devices to talk to each other over the wire. This means one micro:bit will have to be connected to my computer the whole time, and it will be communicating (as a proxy) with both the computer (which controls Spotify) and the other micro:bit.

1. The RS232 Connection and Signals

What does RS232 stand for?

Serial ports, also known as RS232 ports, are an interface used for serial communication that transmits a single bit at a time. COM or communications ports are other names for serial ports.

The use of serial ports has declined with the development of USB and other high-speed solutions, but they still are used in some very important applications. Serial ports are instrumental in the operation of industrial automation systems and are often used to connect lab equipment and other scientific instruments to computers and networks.

It is imperative that you regularly monitor and analyze serial port activity when working with serial devices. You want to be able to see traffic flowing in both directions from your RS232/422/485 ports. This could be event notifications from apps, status messages or other information that enables you to troubleshoot the equipment if necessary and can serve as a guide for installing new devices.

How to read data from a serial port?

There is no specific operating system tool or function that allows you to read serial ports in Windows. But there is a solution, as the software is available that can check, monitor and analyze RS232 port activity. It gives you a tool for Windows that can read COM ports.

COM Port Reader is a professional-grade software tool that should be your first choice when seeking an answer to the question of how to read data from RS232 ports. The tool allows you to send commands or other information to COM-based devices or RS232 applications in a variety of formats (string, binary, octal, decimal, hexadecimal, mixed). The returned responses can be monitored and saved in a single log file that employs the first-in-first-out method. Serial Port Reader also lets you redirect serial port output a file or the clipboard, so it is available for further analysis at any time.

Main features of Serial Port Reader for Windows:

• Reading COM port activity

This software utility allows you to read RS232 data from a designated port and monitor it even if another application had already opened it. Captured serial data can be displayed in various formats, and the opportunity of real-time monitoring is a great feature for problem resolution.

The received data can be saved to a file of your choice or copied to the clipboard. The tool displays and files input/output control codes (IOCTLs) along with their complete parameters. Sessions can be saved by Com Port Reader and can be reloaded if required.

• Working with multiple ports in one session

Multiple serial ports can be read simultaneously by this software tool. This feature is very useful when comparing data collected from different COM ports that are interacting with the same application within monitoring session. In this case, all data is received and stored in a single log file on a first-in-first-out basis.

• Multiple views for sniffed data

Serial Port Reader allows you to choose the way that collected data is displayed on your computer. Four different view are available: table, line, dump, or terminal. You have the option of monitoring all view modes at the same time.

• Emulating serial communication

An option in terminal mode allows simulated data transmission from a serial application to a monitored COM port. Various data formats, such as string, binary, octal, decimal, hexadecimal, or mixed, can be used to test the COM port or its attached device’s reactions.

• Capturing Modbus data

COM Port Reader’s powerful filters enable you to read serial data transmitted over Modbus RTU and Modbus ASCII. The utility is fully compatible with these protocols, as well as those employed in RS-232, RS-485, and RS-422 interfaces

• Repetitive data exchange

Sending the same command from a serial app to a monitored serial port multiple times can give a clearer picture of the port’s behavior. This serial port utility simplifies that task with a playback feature that can display differences between sessions automatically.

Steps to capture serial port data on Windows with COM Port Reader

This how to read serial port data and collect it using COM Port Reader. First, you need to download the tool, install and launch it. Then you need to start a monitoring session like this:

1. In Serial Port Reader go to the “Main menu”, choose “Session -> New session”. Alternately, you can click on the “New” icon on the main toolbar or press “Ctrl + N”. This invokes the “New monitoring session” screen.
2. Select which view modes that you want displayed during your monitoring session:
   Table view – recorded IRPs are displayed in the form of the table
   Line view – requests passed through a particular serial line are displayed along with details
   Dump view – shows data passed through the serial line
   Terminal view – all received data is displayed in ASCII characters on a text console.
   Modbus view displays received and sent Modbus data (RTU and ASCII).
   “Select all” and “Select none” button are there to simplify your selections.


3. Choose, whether you would like to “Start monitoring now” or “Start in new window” for the immediate behavior of a new session.


4. In “Capture options” you can specify the events you are interested in capturing – Create/Close, Read/Write, Device Control.


5. Click “Start monitoring” to activate the session. A new monitoring window will be displayed.


6. To save the session, in the main menu select “Session -> Save session/ Save session As”. Alternatively you can click “Save” icon on the main toolbar or press “Ctrl + S”.

Give your session a meaningful name so you can return to it for later analysis

The RS232 Connection and Signals

Applescript Read Serial Portable

• DTE and DCE

DTE stands for Data Terminal Equipment. An example of a DTE is a computer. DCE stands for Data Communication Equipment. A modem is an excellent example of a DCE.

A DTE normally comes with a Male Connector, while a DCE comes with a Female Connector. This is not always the case. Here is a simple test to confirm device type. Using a voltmeter, measure Pin 3 and Pin 5 of a DB-9 Connector. DTE devices will indicate a voltage of -3V to -15V. DCE devices will have the voltage on Pin 2.

Note: The result for a DB-25 Connector is reversed (Please refer to DB-9 to DB-25 conversion table below).

• DB-9 to DB-25 Conversion

• RS-232 Connections

Straight-through cables are used to connect a DTE (e.g. computer) to a DCE (e.g. modem), with all signals in one side connected to the corresponding signals in the other side in a corresponding one-to-one basis. When connecting two DTE devices directly with no modem in between, a crossover, or null-modem cable is used. This type of cable cross transmits and receives data signals between the two sides. There is no standard and many variations on how the other control signals are wired. Below is an example of one of them:

• RS-232 Signals

The graphic above illustrates a typical RS-232 logic waveform (Data format: 1 Start bit, 8 Data bits, No Parity, 1 Stop bit). Data transmission begins with a Start bit, followed by the data bits (LSB sent first and MSB sent last), and ends with a 'Stop' bit.

The voltage of Logic '1' (Mark) is between -3VDC to -15VDC, while the Logic '0' (Space) is between +3VDC to +15VDC.

RS-232 connects the Ground of 2 different devices together, which is the so-called 'Unbalanced' connection. Unbalanced connections have a distance limitation of 50 ft (approximately 15 meters) and are very susceptible to noise.

Serial Port Monitor

Using an Arduino Uno as a Spotify Controller on Mac

I recently bough an Arduino Uno with a 1.8″ TFT Arduino Shield and I thought I would have some fun with it by using it as a Spotify controller.

Hardware:
Arduino Uno
Adafruit 1.8″ TFT Shield

Software:
Mac OS X 10.8.5 Mountain Lion
rb-appscript 0.6.1
Ruby

There are three steps to this project:

1. Interact with Spotify and be able to get the artist and song as well as perform actions such as next track, previous track, play/pause, increase volume and decrease volume.
2. Use the serial port through USB to send data between Arduino and Mac.
3. Display song, artist and use joystick input for controls.

Step 1: Interact with Spotify

The Mac version of Spotify supports Applescript so we can use that to perform the actions we need. However, I wanted to keep all the app code in the same language (Ruby) and in the same script so I found a gem (rb-applescript) that executes Applescript with Ruby.

Install rb-applescript
gem install rb-applescript

Step 2: Use Serial Port with Arduino

Ruby has a serial port gem that allows you to read/write from the serial port to your Arduino:

gem install serialport

Example:

The Arduino Uno can also send and receive from USB port:

Step 3: Display with Arduino and read Joystick

The 1.8″ TFT Shield I bought from Adafruit came with a graphics library for drawing shapes and text. We can use it to draw the current song and track to the screen.

Since the screen is not wide enough to display a full song name, we will animate the song text by scrolling to the left. We will do this by redrawing the song name X units to the left every 0.5 seconds where X is determined by the desired scroll speed. When we redraw, we draw the song text of the previous position in the background color and then we draw the song text again in the text color shifted X units left. We do this because we want to minimize the number of pixel draws since redrawing the screen causes a flicker. When the end of the song name reaches the screen, we need to reset it back to the original position. The width of each character in text size 2 is 12 pixels and the screen width is 128 pixels so if x < -12 *song.length() + 128, we reset x.

In our loop() function:

The joystick can be read by reading analog 3.

We only send the state of the joystick if it changes:

Applescript Read Serial Port Orange

In our ruby app, we can perform actions based on the joystick state.

Putting it all together: