40 lines
1.3 KiB
Python
40 lines
1.3 KiB
Python
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# Creates instructions for the robot to move 360 degrees around, make photos of the ball-plate and write the ball_colors to the database
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import MySQLdb
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import random
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db = MySQLdb.connect("localhost","root","root","rpr_robot" ) # Open database connection
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cursor = db.cursor() # prepare a cursor object using cursor() method
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# Get the number of rows in the database for the loop
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cursor.execute('select * from ball_positions')
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cursor.fetchall()
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num_entries = cursor.rowcount - 1
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# Define the possible colors of the balls
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colors = ["blue", "red", "yellow", "cyan", "green"]
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is_empty = 0;
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# Go through array and write detected positions to database
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for i in range(0, num_entries + 1):
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# Ball-Position 29 must be empty at any time!
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if i == 29:
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is_empty = 1
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color = "invalid"
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else:
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is_empty = 0
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# Set random color -> Just for offline-programming!
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color = random.choice(colors);
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# Prepare SQL query to UPDATE required records
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sql = "UPDATE ball_positions SET pos_isEmpty = %i, ball_color = '%s', ball_targetPos = 0, ball_prio = -1 WHERE pos_id = %i" % (is_empty, color, i)
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try:
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cursor.execute(sql) # Execute the SQL command
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db.commit() # Commit your changes in the database
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except:
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print "Error: unable to update records"
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db.rollback() # Rollback in case there is any error
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db.close() # disconnect from server
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