The processing program would need to look for the : as the marker for the start of the 1st temperature, the as the marker for the end of the first temperature and the start of the second temperature, and the ! as the marker for the end of the second temperature. The processing program would then receive the characters: If you put some delimiter between the values you send, like this: The Serial.print on the arduino is converting the byte to a string, and sending the string one character at a time. When I upload the code to the arduino, and start the processing program, I get this output: If (byteCount > 5) // don't do anything until you get 3 characters (header plus the two data bytes The processing code looks like this: //import Serial communication libraryįont24 = createFont(PFont.list(), 12) ĬommPort = new Serial(this, "COM4", 9600) TempC = 54 //convert the analog data to temperature The arduino code looks like this: int tempC If(commPort.read() = 255) // only proceed if you get your header If (commPort.available() > 2) // don't do anything until you get 3 characters (header plus the two data bytes setup fonts for use throughout the applicationĬommPort = new Serial(this, "COM7", 9600) Serial.print((int)tempC) //send the int data to the computer- does not workĪnd here if the Processing code //import Serial communication library ![]() Serial.print((byte)tempC) //send the byte data to the computer- works Serial.print ('\e 1 1H') will move the cursor to the top left corner of the screen (the. For example Serial.print ('\e 2J') will clear the entire screen. Instead you need to learn ANSI escape sequences to move the cursor around. You can't use it to go back up to previous lines. TempC = 254 //convert the analog data to temperature \r returns the cursor to the start of the current line. ![]() Serial.print((byte)255) //send the header Serial.begin(9600) //opens serial port, sets data rate to 9600 bps Returns print () returns the number of bytes written, though reading that number is optional. See the list of available serial ports for each board on the Serial main page. This is the arduino code //declare variables Syntax Serial.print (val) Serial.print (val, format) Parameters Serial: serial port object. I first tried that with "byte" variables and it went fine. I am working on my first project submitting two temperatures to Processing. If you want to print x on one line and y on the next line you can do this: Serial.println(x) Serial.println(y) The next print after this will be on the line after y.
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