Significant updates. Compiles and works, though not test significantly nor assumed to be particularly robust. I2C comms between Raduino and TeensyDSP. Some amount of functioning CAT. Haven't tried with any applications e.g. WSJT-X.

Raduino/Raduino.ino

@@ -337,7 +337,7 @@ byte delay_background(unsigned delayTime, byte fromType){ //fromType : 4 autoCWK
         return 1;
         
       //Check PTT while auto Sending
-      autoSendPTTCheck();
+      //autoSendPTTCheck();
       
       //Check_Cat(3);
     }
@@ -1449,6 +1449,7 @@ void setup()
     factory_alignment();
 #endif
 
+  rigState.begin();
 }
 
 //Auto save Frequency and Mode with Protected eeprom life by KD8CEC
@@ -1473,8 +1474,6 @@ void checkAutoSaveFreqMode()
       saveCheckTime = 0;  //for reduce cpu use rate
     }
   }
-
-  rigState.begin();
 }
 
 void loop(){