Arduino IDE display DEBUG PORT Serial1 output

Question

How can I display / capture Arduino IDE's Serial1 output? Can I display it using Arduino IDE or using a script in Python?

This python script (courtesy of Chad G) works for the Serial:

#!/usr/bin/env python3
import serial 
import sys
if len(sys.argv)<2:
 print("Please give serial port number")
 exit()
port=sys.argv[1]
ser= serial.Serial('/dev/ttyUSB'+port,9600,timeout=5)
while True:
 try:
 stringMe = str(ser.readline().strip())
 if len(stringMe)>3:
 print(stringMe)
 except:
 print(sys.exc_info())
 ser.close()
 exit()

called as (for USB0):

python3 Arduino/tools/multiMonitor/monitorUsb1.py 0

or, if I want to save to a log file:

python3 Arduino/tools/multiMonitor/monitorUsb1.py 0 >> Arduino/tools/multiMonitor/log/usb00.txt

Answer 1

Serial1 (on most Arduino boards that have Serial1) is connected to a pair of pins on the GPIO headers and nowhere else.

To get it to your computer you will have to feed those TX and RX pins through a USB to TTL UART (FT232, CP2102, etc) adaptor.

From there on in it's exactly the same as using Serial but of course with a different device name.