mysql example ArduinoChart (snippet)

Python mysql example 'ArduinoChart'

Functions in program:

def tampilGrafik():

Modules used in program:

import matplotlib.pyplot as plt
import mysql.connector
import numpy
import serial

python ArduinoChart

Python mysql example: ArduinoChart

import serial
import numpy
import mysql.connector
import matplotlib.pyplot as plt

from drawnow import *
from sys import argv

port = 'com3'
baud = 9600

values = []
files = open('dataLog.txt', 'w')

serialData = serial.Serial(port, baud)
plt.ion()

dbConn = mysql.connector.connect(
         user='root',
         password='',
         host='localhost',
         database='coba')

cur = dbConn.cursor()

def tampilGrafik():
    plt.plot(values, 'rx-', label='Analog Data')
    plt.ylim(0,1023)
    plt.legend(loc='lower right')
    plt.grid(True)


for i in range(0,26):
    values.append(0)

while True:
    print("Read Serial Data")
    while (serialData.inWaiting()==0):
        pass

    val  = float(serialData.readline()) # Data ADC
    val2 = ((float(val)*5)/1023)        # Data Tegangan dalam Volt


    files.write('ADC_dat =  ' + str(val) + ' | ' + 'Tegangan (Volt) = ' + str(val2) )
    intValues = val
    print(intValues)
    values.append(intValues)
    values.pop(0)
    drawnow(tampilGrafik)


    query = ("""INSERT INTO arduino(adc, tegangan) VALUES (%s, %s)""" % (val, val2))
    # print(query)
    cur.execute(query)
    dbConn.commit()

cur.close()
dbConn.close()

Python links

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Python Tutorial: https://pythonprogramminglanguage.com