1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
from Tkinter import *
import time
import math
import array
class Oscilloscope(Frame):
def createCanvas(self):
self.canvas = Canvas(self,height=self.size,width=self.size,bg=self.bg)
self.canvas.pack()
def draw(self,what,samples):
for i in what:
self.data.append(i);
s = len(self.data)
if s >= samples:
count = 0
incr = (s/self.size)
j = 0
while(j < s):
if(count >= self.size): break
self.canvas.delete(self.item[count])
y = self.data[j]*self.size/2 + self.size/2
self.item[count] = self.canvas.create_line(count, self.prev, count+1, y, fill=self.line)
self.prev = y
count += 1
j += incr
del self.data[0:s]
def quit(self):
self.close();
time.sleep(0.1)
self.master.destroy()
def __init__(self,master, size, end, line="black", bg="white"):
master.title("Oscilloscope")
self.size = size
self.close = end
self.line = line
self.bg = bg
self.data = array.array('f')
Frame.__init__(self,master)
self.pack()
self.createCanvas()
self.item = array.array('i')
for i in range(0, self.size):
self.item.append(0)
self.prev = 0
self.n = 0
self.master = master
self.master.protocol("WM_DELETE_WINDOW", self.quit)
|
