fixed memory % bug

src/rpi-cpu2mqtt.py

@@ -31,9 +31,12 @@ def check_cpu_load():
 		return cpu_load
 
 def check_voltage():
+        try:
             full_cmd = "vcgencmd measure_volts | cut -f2 -d= | sed 's/000//'"
             voltage = subprocess.Popen(full_cmd, shell=True, stdout=subprocess.PIPE).communicate()[0]
             voltage = voltage.strip()[:-1]
+        except:
+            voltage = 0
         return voltage
 
 def check_swap():
@@ -45,7 +48,7 @@ def check_swap():
 def check_memory():
 		full_cmd = "free -t | awk 'NR == 2 {print $3/$2*100}'"
 		memory = subprocess.Popen(full_cmd, shell=True, stdout=subprocess.PIPE).communicate()[0]
-		memory = round(float(memory), 1)
+		memory = round(float(memory.decode("utf-8").replace(",",".")))
 		return memory
 
 def check_cpu_temp():