Added support for a 16-char display to be received from the IOP, with a

selectable timeout.

Verified the basics of it working.

Subsequently updated with better timeout code.  This compiles, but has
not been tested.

ubitx_20/cat_libs.ino

@@ -73,8 +73,8 @@ void iopSendMode(char cw_mode, char is_usb, char digi_mode, char is_test)
 }
 
 unsigned int skipTimeCount = 0;
-byte CAT_BUFF[5];
+byte CAT_BUFF[34];
-byte CAT_SNDBUFF[5];
+byte CAT_SNDBUFF[34];
 
 void SendCatData(byte sendCount)
 {
@@ -812,6 +812,7 @@ byte rxBufferCheckCount = 0;
 byte isProcessCheck_Cat = 0;
 
 char iopStatusWindow[4] = "   ";  // may need to move this if it's not visible to ubitx_lcd_1602
+char iopMenuDisplay[17] = "                ";
 
 // KC4UPR - these are used to delay the display of the Smeter, if the 
 // IOP status has recently been displayed, to give time to see it.
@@ -819,6 +820,8 @@ char iopStatusWindow[4] = "   ";  // may need to move this if it's not visible t
 #define SMETER_DELAY_TIME 5000
 bool displaySmeter = true;
 int  delaySmeter;
+int  delayTopLine = 0;
+int  stateTopLine = 0;
 
 //fromType normal : 0, TX : 1, CW_STRAIGHT : 2, CW_PADDLE : 3, CW_AUTOMODE : 4
 //if cw mode, no delay
@@ -865,16 +868,13 @@ void Check_Cat(byte fromType)
 
   //Arived CAT DATA
   // KC4UPR - IOP update - 6 characters; first character determines mode (CAT or IOP)
-  for (i = 0; i < 6; i++) { //5; i++)
+  // Will adjust based on readlength
-    if (i == 0) {
   byte first = Serial.read();
   readPrefix = byteToPrefix(first);
   readLength = byteToLength(first);
-    } else {
+  for (int i = 0; i < readLength; i++) {
-      CAT_BUFF[i-1] = Serial.read();
+    CAT_BUFF[i] = Serial.read();
   }
-  }
-    
 
   // KC4UPR:  I don't understand why this is here or how/when it will ever get called, but I will leave
   // it alone for now.
@@ -884,7 +884,7 @@ void Check_Cat(byte fromType)
   isProcessCheck_Cat = 1; 
 
   if (readPrefix == IOP_PREFIX) {
-    recvIOPMessage(msg, CAT_BUFF, 5); // not super robust... if IOP ever sends more (or less) than a 5 (6) byte message
+    recvIOPMessage(msg, CAT_BUFF, readLength); // not super robust... if IOP ever sends more (or less) than a 5 (6) byte message
     // following assumes it's a status message, 4 chars (including trailing null, which I'm ignoring...
     switch(msg.id) {
       case IOP_SSB_STATUS_MSG:
@@ -901,6 +901,20 @@ void Check_Cat(byte fromType)
       case IOP_MODE_REQUEST:
       iopSendMode(cwMode, isUSB, digiMode, isTest);
       break;
+
+      case IOP_MENU_DISPLAY_MSG:
+      for (int i = 0; i < 16; i++) {
+        iopMenuDisplay[i] = msg.data[i+1];
+      }
+      if (int8_t(msg.data[0]) == 0) {
+        stateTopLine = 4;
+      } else if (int8_t(msg.data[0]) < 0) {
+        stateTopLine = 0;
+      } else {  // > 0
+        delayTopLine = millis() + (int8_t(msg.data[0]) * 1000);
+        stateTopLine = 2;       
+      }
+      break;
     }
     
   } else if (readPrefix == CAT_PREFIX) {

ubitx_20/ubitx_lcd_1602.ino

@@ -530,6 +530,25 @@ int freqScrollPosition = 0;
 void updateLine2Buffer(char displayType)
 {
   unsigned long tmpFreq = 0;
+
+  if ((stateTopLine == 2) || (stateTopLine == 4)) {
+    strcpy(line2Buffer, iopMenuDisplay);
+    if (stateTopLine == 4) {
+      stateTopLine = 3;
+    } else {
+      stateTopLine = 1;
+    }
+  }
+  if (stateTopLine == 3) {
+    return;
+  } else if (stateTopLine == 1) {
+    if (delayTopLine < millis()) {
+      stateTopLine = 0;
+    } else {
+      return;
+    }
+  }
+  
   if (ritOn)
   {
     strcpy(line2Buffer, "RitTX:");
@@ -738,7 +757,7 @@ void idle_process()
       return;
       
     //if line2DisplayStatus == 0 <-- this condition is clear Line, you can display any message
-    if (line2DisplayStatus == 0 || (((displayOption1 & 0x04) == 0x04) && line2DisplayStatus == 2)) {
+    if (line2DisplayStatus == 0 || (((displayOption1 & 0x04) == 0x04) && line2DisplayStatus == 2) || stateTopLine > 0) {
       if (checkCount++ > 1)
       {
         updateLine2Buffer(0); //call by scheduler