(0x08) ASCII character before every print() message?

Hi guys,

I am sniffing data coming from the Espruino Pico through virtual COM port (Windows, Python), and I ran into a problem. It seems that each print(X) adds the special "Backspace" character before X, and finally adds "carriage return" +"Line feed".
I wonder if this "Backspace" character is really useful for anything? I am using the serial port for long time, I never had to use this "Backspace" character. If anyone could explain why it is so important, that would be great!

I am a beginner with Python, and I had to find a trick to remove this "BS" character. I tried this one:

myData=comPort.readline()
    myData=myData[2:]

Why "2" characters removed? I don't really understand, I thought only had to be removed, but Espruino seems to send another useless character in front of the printed string, maybe '>' ?

If anyone has a better idea on how to keep only the useful data, do not hesitate to post it :-)

Have a nice day.

The issue you have is that you have the console on USB, with echo turned on. For instance you usually get a prompt at the beginning of the line like >.

So if you print something, Espruino must delete that > character, then print what you told it to with a newline, then eventually put the > character back.

To avoid it, either:

• Call echo(0) to disable echoing
  
• Move the console away from USB (for example with Serial1.setConsole()). You can then use USB.print(...) to print exactly what you want to USB - no backspaces or deletes. However as the console will be gone, you'll have to reset the Espruino in order to write more code to it.
  

Thank you Gordon, calling "echo(0)" is exactly what I needed.