Programming in python is very new to me, and I’m only doing this out of necessity, as it appears it’s the most easy and common method on the raspberry pi. So, here goes…
This code reads data from a USB device which issues text on a serial port, where I can then disseminate the data.
And yes, this is initial version which hasn’t been tested 100% yet.
import serial import time import csv port = '/dev/serial/by-id/usb-Prolific_Technology_Inc._USB-Serial_Controller_D-if00-port0' #port = '/dev/ttyUSB0' baud = 9600 ser = serial.Serial(port, baud, timeout=1) ser.flushInput() print(ser.name) oldline =  while True: try: #ser_bytes = ser.readline() #decoded_bytes = float(ser_bytes[0:len(ser_bytes)-2].decode("utf-8")) #print(decoded_bytes) line = ser.readline() # read bytes until line-ending line = line.decode(encoding='UTF-8') # convert to string #line = line.rstrip('\r\n') # remove line-ending characters split_line = line.splitlines() if oldline != split_line: with open("test_data.csv","a") as f: for item in split_line: writer = csv.writer(f,delimiter=",") writer.writerow([time.time(), item]) oldline = split_line except: print("exiting") #print("Keyboard Interrupt") break
I have now added it here: https://github.com/vrdriver/Serial-PI-thon