From e1dad3dc1f70f5e6d360e5516a799481ea29ff2d Mon Sep 17 00:00:00 2001
From: Pacien TRAN-GIRARD
Date: Sat, 30 May 2015 20:51:07 +0200
Subject: Import the second version of the spectrum visualization utility

---
 visualizer/visualizer.py | 101 +++++++++++++++++++++++++----------------------
 1 file changed, 54 insertions(+), 47 deletions(-)
 mode change 100644 => 100755 visualizer/visualizer.py

diff --git a/visualizer/visualizer.py b/visualizer/visualizer.py
old mode 100644
new mode 100755
index ed65384..872dd9d
--- 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
 
-- 
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