I am trying to insert Arduino data into a database through Python, however, it will not do it. Basically I am assigning data that I read in from the serial port assigned to my Arduino and storing the first value of it in the variable arduinoData. in my insert statement I am trying to use a string literal to put the arduinoData into the table. Here is the code:
import mysql.connector
from mysql.connector import errorcode
from time import sleep
import serial
# Obtain connection string information from the portal
config = {
'host':'oursystem.mysql.database.azure.com',
'user':'project',
'password':'',
'database':'projectdb'
}
# Construct connection string
try:
conn = mysql.connector.connect(**config)
print("Connection established")
except mysql.connector.Error as err:
if err.errno == errorcode.ER_ACCESS_DENIED_ERROR:
print("Something is wrong with the user name or password")
elif err.errno == errorcode.ER_BAD_DB_ERROR:
print("Database does not exist")
else:
print(err)
else:
cursor = conn.cursor()
ser = serial.Serial('/dev/ttyACM0', 9600) # Establish the connection on a specific port
arduinoData=ser.read().strip()
print arduinoData
# Drop previous table of same name if one exists
cursor.execute("DROP TABLE IF EXISTS ArduinoData;")
print("Finished dropping table (if existed).")
# Create table
cursor.execute("CREATE TABLE ArduinoData (value VARCHAR(20));")
print("Finished creating table.")
# Insert some data into table
cursor.execute("INSERT INTO ArduinoData (value) VALUES (%s);",(arduinoData))
print("Inserted",cursor.rowcount,"row(s) of data.")
# Cleanup
conn.commit()
cursor.close()
conn.close()
print("Done.")
If I put the %s in single quotes like '%s' it just prints that instead of my arduinoData. Can anyone see what is wrong here, thanks.
