introduce inter comm delay, solves most error situations

src/CmdServer.py

@@ -210,10 +210,20 @@ class CmdInterpreter(cmd.Cmd):
         self.__println("-----------")
         self.__println("List the configured datapoints")
 
+    def do_reset(self, arg):
+        for r in self.registers:
+            r.errorCount = 0
+            r.processCount = 0
+    
+    def help_reset(self):
+        self.__println("Usage: reset")
+        self.__println("-----------")
+        self.__println("Resets the statistics of configured datapoints")
+
     def do_stats(self, arg):
         for i, r in enumerate(self.registers):
             if r.processCount == 0:
-                ratio = None
+                ratio = -1
             else:
                 ratio = float(r.errorCount) / float(r.processCount)
             self.__println("#{0:2d}: {1:15s} ({2:2d}, {3:5d}), pc: {4:7d}, ec: {5:7d}, q: {6:1.4f}"

src/CommunicationProcessor.py

@@ -5,6 +5,7 @@ import RegisterDatapoint
 from pymodbus.client.sync import ModbusSerialClient
 import wiringpi
 import MyRS485
+import time
 
 
 ERROR_PIN = 29
@@ -44,6 +45,9 @@ class CommunicationProcessor(threading.Thread):
                 if client.socket is None:
                     print("renew socket")
                     client.socket = self.__getSerial()
+            finally:
+                time.sleep(self.config.interCommDelay)
+
 
 
 

src/Config.py

@@ -10,4 +10,4 @@ class Config(object):
         self.registerFile = 'registers.pkl'
         self.serialPort = '/dev/ttyAMA0'
         self.serialBaudRate = 9600
-
+        self.interCommDelay = 0.025