New smartmeter

app/helpers/ConfirmingSyncPatternState.rb

@@ -8,10 +8,10 @@ class ConfirmingSyncPatternState < StatePattern::State
    while (idx < bytes.length && idx < sync_length && bytes[idx] == Synchronizer::SYNC_PATTERN[idx]) do idx = idx+1 end
    
    if (idx == sync_length)
-     #p "Sync pattern confirmed"
+     p "Sync pattern confirmed"
      transition_to(InSyncState)
    else  
-     #p "Back to SearchingForSync state. idx = #{idx}."
+     p "Back to SearchingForSync state. idx = #{idx}."
      transition_to(SearchingForSyncState)
    end
   

app/helpers/InSyncState.rb

@@ -2,7 +2,7 @@ require "socket"
 
 class InSyncState < StatePattern::State
   
-  END_OF_FRAME = "!\n"
+  END_OF_FRAME = "!****\n"
 
 #  def initialize(stateful, previous_state)
 #      # open socket to EmonHub
@@ -42,7 +42,8 @@ class InSyncState < StatePattern::State
   private
      def new_frame_starts(bytes,idx,sync_pattern_length)
        #return bytes[idx..idx+sync_pattern_length-1].eql?(Synchronizer::SYNC_PATTERN)
-       return bytes[idx..idx+sync_pattern_length-1].eql?(END_OF_FRAME)
+       #return bytes[idx..idx+sync_pattern_length-1].eql?(END_OF_FRAME)
+       return bytes[idx].eql?(END_OF_FRAME[0])
      end
      
      def handle_frame(frame_lines)

app/helpers/Synchronizer.rb

@@ -1,7 +1,8 @@
 class Synchronizer 
   include StatePattern
   
-  SYNC_PATTERN = "\n/ISk5\\2ME382-1003\n\n"
+  SYNC_PATTERN = "/CTA5ZIV\-METER\n\n"
+  #SYNC_PATTERN = "\n/ISk5\\2ME382-1003\n\n"
 
   set_initial_state ::SearchingForSyncState
 

app/models/reading.rb

@@ -4,13 +4,20 @@ UNKNOWN_READING = { :total_kwh_consumed_high => nil, :total_kwh_consumed_low =>
 
 class Reading < ActiveRecord::Base
    
+  # Round up with 1 (default) decimals 
+  def round_up(number, decimals = 1)
+    factor = 10 ** decimals
+    (number * factor).ceil / factor.to_f
+  end
+
+
   def eql_reading?(reading)
     self.total_kwh_consumed_high == reading.total_kwh_consumed_high &&
     self.total_kwh_consumed_low == reading.total_kwh_consumed_low &&
     self.total_kwh_produced_high == reading.total_kwh_produced_high &&
     self.total_kwh_produced_low == reading.total_kwh_produced_low &&
-    self.current_kw_consumed == reading.current_kw_consumed &&
-    self.current_kw_produced == reading.current_kw_produced &&
+    round_up(self.current_kw_consumed) == round_up(reading.current_kw_consumed) &&
+    round_up(self.current_kw_produced) == round_up(reading.current_kw_produced) &&
     self.total_m3_gas_consumed == reading.total_m3_gas_consumed &&
     self.high_tarif == reading.high_tarif
   end

docker-compose.yml

@@ -1,4 +1,3 @@
-version: '3'
 services:
   db:
     container_name: smartmeter_db

smartmeter.rb

@@ -17,7 +17,7 @@ ActiveRecord::Base.establish_connection(connection_details)
 def open_device
   begin
     # Open connection to serial port
-    io_device = SerialPort.new("/dev/ttyUSB0", 9600, 7, 1, SerialPort::EVEN)
+    io_device = SerialPort.new("/dev/ttyUSB0", 115200, 8, 1, SerialPort::NONE)
     # Make reading blocking
     io_device.read_timeout = 0
   rescue 

test-serial.rb

@@ -18,10 +18,10 @@ if __FILE__ == $0
 
   #params for serial port
   port_str = "/dev/ttyUSB0"  #may be different for you
-  baud_rate = 9600
-  data_bits = 7
+  baud_rate = 115200
+  data_bits = 8
   stop_bits = 1
-  parity = SerialPort::EVEN
+  parity = SerialPort::NONE
 
 sp = SerialPort.new(port_str, baud_rate, data_bits, stop_bits, parity)