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piezo.py
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piezo.py
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"""Demonstrates the use of tone and noTone functions with a simple GUI and
piezo speaker connected to PWM1
"""
from robovero.extras import roboveroConfig
from robovero.arduino import tone, noTone, PWM1
from Tkinter import Tk, Listbox, END
__author__ = "Neil MacMunn"
__email__ = "[email protected]"
__copyright__ = "Copyright 2010, Gumstix Inc"
__license__ = "BSD 2-Clause"
__version__ = "0.1"
def playSelection(event):
selection = int(tone_listbox.curselection()[0])
if selection == 0:
noTone(PWM1)
elif selection < 10:
tone(PWM1, selection*100)
else:
noTone(PWM1)
roboveroConfig()
# draw a listbox
root = Tk()
root.title("Tone Generator")
# populate the list with available frequencies
tone_listbox = Listbox(root)
tone_listbox.insert(END, "OFF")
for freq in range(100, 1000, 100):
tone_listbox.insert(END, "%d Hz" % freq)
tone_listbox.pack()
# set the callback function for left button clicks
tone_listbox.bind('<ButtonRelease-1>', playSelection)
root.mainloop()