response delay

meterBusClient.cpp

@@ -187,7 +187,8 @@ void MeterBusClient::handleFrame() {
 
 
 typedef enum {
-  STATE_START, STATE_IDLE, STATE_SHORT_FRAME, STATE_LONG_CTRL_FRAME, STATE_HANDLE, STATE_INVALID, STATE_DONE
+  STATE_START, STATE_IDLE, STATE_SHORT_FRAME, STATE_LONG_CTRL_FRAME, STATE_HANDLE, STATE_INVALID, STATE_DONE,
+  STATE_DELAYED_HANDLE, STATE_DELAY
 } e_meterBusClientState;
 
 typedef enum {
@@ -200,6 +201,7 @@ void MeterBusClient::exec() {
   static e_meterBusClientState state = STATE_IDLE;
   static e_meterBusClientSubState subState = SUBSTATE_LENGTH;
   static unsigned char userDataCnt = 0;
+  static unsigned long receivedDoneTimestamp;
 
   int chi = Serial3.read();
   char ch = (char) chi;
@@ -315,6 +317,17 @@ void MeterBusClient::exec() {
     break;
 
   case STATE_HANDLE:
+    state = STATE_DELAY;
+    receivedDoneTimestamp = millis();
+    break;
+
+  case STATE_DELAY:
+    if ((receivedDoneTimestamp + RESPONSE_DELAY) < millis()) {
+      state = STATE_DELAYED_HANDLE;
+    }
+    break;
+
+  case STATE_DELAYED_HANDLE:
     if (m_frame.valid) {
       handleFrame();
     } else {

meterBusClient.h

@@ -15,6 +15,10 @@
 #include "Resources.h"
 #include "Thermometer.h"
 
+
+const unsigned long RESPONSE_DELAY = 50;
+
+
 class MeterBusClient;