Makes RF2 sending and receiving work for ESP8266 with added support for group bit and dimming (#113)

* Made rf2 sending and receiving work

With code from https://github.com/1technophile/OpenMQTTGateway/pull/109
plus some other fixes.

* Added support for group bit

Added support for sending and receiving group bit

* Group bit and MQTT retransmitting

Added support for sending and receiving group bit.
Made the gateway transmit the new state of a RF2 switch to the MQTT state topic when it receives a MQTT command to control that switch.

* Removed hard coded RF2 code length

* Added support for dimming to RF2

Verified to work with Nexa WMR-250 dimmer.

* Minor cleanup

OpenMQTTGateway.ino

@@ -173,6 +173,9 @@ void setup()
   #ifdef ZgatewayRF
     setupRF();
   #endif
+  #ifdef ZgatewayRF2
+    setupRF2();
+  #endif
   #ifdef ZgatewayBT
     setupBT();
   #endif
@@ -249,6 +252,11 @@ void loop()
       if(resultRF)
       trc(F("RFtoMQTT OK"));
     #endif
+    #ifdef ZgatewayRF2
+      boolean resultRF2 = RF2toMQTT();
+      if(resultRF2)
+      trc(F("RF2toMQTT OK"));
+    #endif
     #ifdef ZgatewayIR
       boolean resultIR = IRtoMQTT();
       if(resultIR)

User_config.h

@@ -95,7 +95,7 @@ const byte subnet[] = { 255, 255, 255, 0 }; //ip adress
 #else // for arduino + W5100
   #define ZgatewayRF
   #include "config_RF.h"
-  #define ZgatewayRF2
+  //#define ZgatewayRF2 // too big for UNO
   #ifdef RFM69_Wiring
     //#define ZgatewayRFM69 not tested
     //#include "config_RFM69.h"

ZgatewayRF2.ino

@@ -59,7 +59,10 @@ void setupRF2(){
     #else
       NewRemoteReceiver::init(0, 2, rf2Callback);
     #endif
-    Serial.println("Receiver RF2 initialized");    
+    trc(F("Receiver RF2 initialized"));    
+    pinMode(RF_EMITTER_PIN, OUTPUT);
+    digitalWrite(RF_EMITTER_PIN, LOW);
+    trc(F("Transmitter RF2 initialized"));    
 }
 
 boolean RF2toMQTT(){
@@ -80,10 +83,10 @@ boolean RF2toMQTT(){
     MQTTgroupBit = String(rf2rd.groupBit);
     MQTTswitchType = String(rf2rd.switchType);
     String MQTTRF2string;
-    MQTTRF2string = subjectRF2toMQTT+String("/")+RF2codeKey+MQTTAddress+String("/")+RF2unitKey+MQTTunit+String("/")+RF2periodKey+MQTTperiod;
-        trc(F("Adv data RF2toMQTT"));
-        client.publish((char *)MQTTRF2string.c_str(),(char *)MQTTswitchType.c_str());  
-      return true;
+    MQTTRF2string = subjectRF2toMQTT+String("/")+RF2codeKey+MQTTAddress+String("/")+RF2unitKey+MQTTunit+String("/")+RF2groupKey+MQTTgroupBit+String("/")+RF2periodKey+MQTTperiod;
+    trc(F("Adv data RF2toMQTT"));
+    client.publish((char *)MQTTRF2string.c_str(),(char *)MQTTswitchType.c_str());  
+    return true;
   }
   return false;
 }
@@ -110,7 +113,8 @@ void MQTTtoRF2(char * topicOri, char * datacallback) {
   long valueCODE  = 0;
   int valueUNIT = -1;
   int valuePERIOD = 0;
-  int valueBIT  = 0;
+  int valueGROUP  = 0;
+  int valueDIM  = -1;
   
   int pos = topic.lastIndexOf(RF2codeKey);       
   if (pos != -1){
@@ -129,10 +133,24 @@ void MQTTtoRF2(char * topicOri, char * datacallback) {
   int pos3 = topic.lastIndexOf(RF2unitKey);       
   if (pos3 != -1){
     pos3 = pos3 + strlen(RF2unitKey);
-    valueUNIT = (topic.substring(pos3,pos3 + 1)).toInt();
+    valueUNIT = (topic.substring(pos3, topic.indexOf("/", pos3))).toInt();
     trc(F("Unit:"));
     trc(String(valueUNIT));
   }
+  int pos4 = topic.lastIndexOf(RF2groupKey);
+  if (pos4 != -1) {
+    pos4 = pos4 + strlen(RF2groupKey);
+    valueGROUP = (topic.substring(pos4,pos4 + 1)).toInt();
+    trc(F("RF2 Group:"));
+    trc(String(valueGROUP));
+  }
+  int pos5 = topic.lastIndexOf(RF2dimKey);
+  if (pos5 != -1) {
+    pos5 = pos5 + strlen(RF2dimKey);
+    valueDIM = (topic.substring(pos5, topic.indexOf("/", pos5))).toInt();
+    trc(F("RF2 Dim:"));
+    trc(String(valueDIM));
+  }
   
   if ((topic == subjectMQTTtoRF2) || (valueCODE != 0) || (valueUNIT  != -1)|| (valuePERIOD  != 0)){
     trc(F("MQTTtoRF2"));
@@ -142,12 +160,48 @@ void MQTTtoRF2(char * topicOri, char * datacallback) {
     trc(String(valueCODE));
     trc(String(valueUNIT));
     trc(String(valuePERIOD));
+    trc(String(valueGROUP));
     trc(String(boolSWITCHTYPE));
+    trc(String(valueDIM));
+    NewRemoteReceiver::disable();
     trc(F("Creating transmitter"));
     NewRemoteTransmitter transmitter(valueCODE, RF_EMITTER_PIN, valuePERIOD);
     trc(F("Sending data"));
-    transmitter.sendUnit(valueUNIT, boolSWITCHTYPE); 
+    if (valueGROUP) {
+      if (valueDIM >= 0) {
+        transmitter.sendGroupDim(valueDIM); 
+      }
+      else {
+        transmitter.sendGroup(boolSWITCHTYPE); 
+      }
+    }
+    else {
+      if (valueDIM >= 0) {
+        transmitter.sendDim(valueUNIT, valueDIM); 
+      }
+      else {    
+        transmitter.sendUnit(valueUNIT, boolSWITCHTYPE); 
+      }
+    }
     trc(F("Data sent"));
+    NewRemoteReceiver::enable();
+
+    // Publish state change back to MQTT
+    String MQTTAddress;
+    String MQTTperiod;
+    String MQTTunit;
+    String MQTTgroupBit;
+    String MQTTswitchType;
+
+    MQTTAddress = String(valueCODE);
+    MQTTperiod = String(valuePERIOD);
+    MQTTunit = String(valueUNIT);
+    MQTTgroupBit = String(rf2rd.groupBit);
+    MQTTswitchType = String(boolSWITCHTYPE);
+    String MQTTRF2string;
+    MQTTRF2string = subjectRF2toMQTT+String("/")+RF2codeKey+MQTTAddress+String("/")+RF2unitKey+MQTTunit+String("/")+RF2groupKey+MQTTgroupBit+String("/")+RF2periodKey+MQTTperiod;
+    trc(F("Adv data MQTTtoRF2 push state via RF2toMQTT"));
+    client.publish((char *)MQTTRF2string.c_str(),(char *)MQTTswitchType.c_str());  
   }
 }
 

config_RF.h

@@ -59,7 +59,9 @@ RF supported protocols
 #define subjectRF2toMQTT "home/RF2toMQTT"
 #define RF2codeKey "CODE_" // code will be defined if a subject contains RF2codeKey followed by a value of 7 digits
 #define RF2periodKey "PERIOD_" // period  will be defined if a subject contains RF2periodKey followed by a value of 3 digits
-#define RF2unitKey "UNIT_"  // number of your unit value  will be defined if a subject contains RF2unitKey followed by a value of 1 digit
+#define RF2unitKey "UNIT_"  // number of your unit value  will be defined if a subject contains RF2unitKey followed by a value of 1-2 digits
+#define RF2groupKey "GROUP_"  // number of your group value  will be defined if a subject contains RF2groupKey followed by a value of 1 digit
+#define RF2dimKey "DIM_"  // number of your dim value  will be defined if a subject contains RF2dimKey followed by a value of 1-3 digits
 
 /*-------------------PIN DEFINITIONS----------------------*/
 #ifdef I2C_Wiring // With Support for I2C Modules