Import the second version of the spectrum visualization utility

1 files changed, 54 insertions, 47 deletions

diff --git a/visualizer/visualizer.py b/visualizer/visualizer.py
index ed65384..872dd9d 100644..100755
--- a/visualizer/visualizer.py
+++ b/visualizer/visualizer.py
@@ -1,53 +1,60 @@
-
-BINS = 128
-
+#!/usr/bin/python3
 
 import serial
-
-s = serial.Serial("/dev/ttyACM0", 115200)
-
-
-def acquire_data():
-
-    nb_val = 0
-    while nb_val != BINS+1:
-        l = s.readline()
-        d = l.decode("utf8")
-        v = d.split(' ')
-        nb_val = len(v)
-
-    n = [0] * BINS
-    for i in range(BINS):
-        try:
-            n[i] = int(v[i])
-
-        except ValueError:
-            n[i] = 0
-
-    return n
-
-
+import matplotlib
 import matplotlib.pyplot as plt
-import numpy as np
-
-
-fig = plt.figure()
-ax = fig.add_subplot(111)
-
-li, = ax.plot(range(BINS))
-plt.axis([0, BINS, 0, 250])
-
-fig.canvas.draw()
-plt.show(block=False)
-
+import matplotlib.animation as animation
+from collections import OrderedDict
+
+nb_bins = 128
+baud_rate = 115200
+port = "/dev/ttyACM0"
+
+bin_separator = ' '
+val_separator = ':'
+
+
+def recv(link, nb_val):
+        valid = False
+        while not valid:
+                line = link.readline().rstrip()
+                
+                try:
+                        line = line.decode("utf-8")
+                except TypeError:
+                        valid = False
+                        continue
+
+                raw_bins = line.split(bin_separator)
+                valid = len(raw_bins) == nb_bins
+                                
+                if not valid:
+                        continue
+                
+                bins = OrderedDict()
+                for b in raw_bins:
+                        values = b.split(val_separator)
+                        valid = len(values) == 2
+                        if not valid:
+                                continue
+                                
+                        bins[int(values[0])] = int(values[1])
+                
+        return bins
+        
+
+if __name__ == '__main__':
+        
+        link = serial.Serial(port, baud_rate)
+        
+        while 1:
+                data = recv(link, nb_bins)
+                x, y = list(data.keys()), list(data.values())
+                
+                plt.cla()
+                plt.hist(y, bins=x)
+                plt.draw()
+                plt.show(block=False)
 
-while True:
-    try:
-        y = acquire_data()
-        print(y)
-        li.set_ydata(y)
-        fig.canvas.draw()
 
-    except KeyboardInterrupt:
-        break