PYSERIAL WITH ARDUINO(comms with arduino from pc)

In this post we're gonna learn about "pyserial"  python language library package to communicate or log data from arduino to pc (or) we can get rid of the serial port of arduino.Hence we do the same as we do in serial monitor.

the module can be installed using pip 

for linux:

"sudo python -m pip install pyserial" 

for windows :

"pip install pyserial"

here is a small arduino skecth for reading from terminal or cmd from arduino serial port

code:

import serial as sl

#importing the serial lib as name sl

import time

mon = '/dev/ttyACM0'
#declearing a variable for port name

baud = 9600 
#defining baud rate 

arduino = serial.Serial(mon, baud, timeout=.1)

while True:
    mon = arduino.readline()
    print('the read data:,mon')
    
#printing message for reading data from serial

here is the python file for data loging

code:

import serial
arduino_port = "/dev/ttyACM0" #serial port of Arduino
baud = 9600 #arduino uno runs at 9600 baud
fileName="analog-data.csv" #name of the CSV file generated
ser = serial.Serial(arduino_port, baud)
print("Connected to Arduino port:" + arduino_port)
file = open(fileName, "a")
print("Created file")
#display the data to the terminal
getData=str(ser.readline())
data=getData[0:][:-2]
print(data)

#add the data to the file
file = open(fileName, "a") #append the data to the file
file.write(data + "\\n") #write data with a newline

#close out the file
file.close()
samples = 10 #how many samples to collect
print_labels = False
line = 0 #start at 0 because our header is 0 (not real data)
while line <= samples:
    # incoming = ser.read(9999)
    # if len(incoming) > 0:
    if print_labels:
        if line==0:
            print("Printing Column Headers")
        else:
            print("Line " + str(line) + ": writing...")
    getData=str(ser.readline())
    data=getData[0:][:-2]
    print(data)

    file = open(fileName, "a")
    file.write(data + "\\n") #write data with a newline
    line = line+1

print("Data collection complete!")
file.close()