wifi fieldstrength class and test added

wifi_fieldstrength.py

@@ -0,0 +1,20 @@
+
+from re import match, sub
+
+class wifi_fieldstrength:
+	def __init__(self, name = "wlan0"):
+		self.name = name
+		self.wf_name = "/proc/net/wireless"
+
+	def read(self):
+		ret = False
+		f = open(self.wf_name, "r")
+		for line in f:
+			line = line.strip()
+			mstr = "^" + self.name
+			if match(mstr, line):
+				line = sub("\s+", " ", line)
+				tmp = line.split(" ")
+				tmp[3] = sub("\.", "", tmp[3])
+				ret = int(tmp[3])
+		return ret

wifi_fieldstrength_test.py

@@ -0,0 +1,10 @@
+#!/usr/bin/python2
+
+from wifi_fieldstrength import wifi_fieldstrength
+from time import sleep
+
+wf = wifi_fieldstrength("wlan0")
+
+while(True):
+	print "Field strength: " + str(wf.read()) + " dBm"
+	sleep(1)