Writing and Reading Text Data

This example illustrates how to communicate with a serial port instrument by writing and reading text data.

The instrument is a Tektronix^® TDS 210 two-channel oscilloscope connected to the serial port COM1. Therefore, many of the commands in the example are specific to this instrument. A sine wave is input into channel 2 of the oscilloscope, and you want to measure the peak-to-peak voltage of the input signal.

Use the serial port through USB to send data between Arduino and Mac. Display song, artist and use joystick input for controls. Step 1: Interact with Spotify. Iffmpeg 6.6.3 download for mac pc. First, you'll need to compile Tod Kurt's Arduino serial communication script. This is super easy. Open up the terminal and navigate your way to where you have the arduino-serial.c file Type in the following: gcc -o arduino-serial arduino-serial.c Once it's done compiling, type./arduino-serial and it should print to the screen usage information.

These functions and properties are used when reading and writing text.

1. Create a serial port object — Create the serial port object s associated with the serial port COM1.

2. Write and read data — Write the *IDN? command to the instrument using writeline, and then read back the result of the command using readline.

   You need to determine the measurement source. Possible measurement sources include channel 1 and channel 2 of the oscilloscope.

   The scope is configured to return a measurement from channel 1. Because the input signal is connected to channel 2, you must configure the instrument to return a measurement from this channel.

   Microsoft visio professional 2016 free download. You can now configure the scope to return the peak-to-peak voltage, and then request the value of this measurement.

   Read back the result using the readline function.

3. Disconnect and clean up — Clear the serial port object s from the MATLAB^® workspace when you are done working with it.