Added display read command

Framing.h

@@ -52,6 +52,7 @@
   #define CMD_FB_READ     0x42
   #define CMD_FB_WRITE    0x43
   #define CMD_FB_READL    0x44
+  #define CMD_DISP_READ   0x66
   #define CMD_DISP_INT    0x45
   #define CMD_DISP_ADDR   0x63
   #define CMD_DISP_BLNK   0x64

RNode_Firmware.ino

@@ -973,9 +973,9 @@ void serialCallback(uint8_t sbyte) {
           }
         #endif
     } else if (command == CMD_FB_READ) {
-      if (sbyte != 0x00) {
-        kiss_indicate_fb();
-      }
+      if (sbyte != 0x00) { kiss_indicate_fb(); }
+    } else if (command == CMD_DISP_READ) {
+      if (sbyte != 0x00) { kiss_indicate_disp(); }
     } else if (command == CMD_DEV_HASH) {
       #if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
         if (sbyte != 0x00) {

Utilities.h

@@ -977,6 +977,20 @@ void kiss_indicate_fb() {
 	serial_write(FEND);
 }
 
+void kiss_indicate_disp() {
+	serial_write(FEND);
+	serial_write(CMD_DISP_READ);
+	#if HAS_DISPLAY
+		uint8_t *da = disp_area.getBuffer();
+		uint8_t *sa = stat_area.getBuffer();
+		for (int i = 0; i < 512; i++) { escaped_serial_write(da[i]); }
+		for (int i = 0; i < 512; i++) { escaped_serial_write(sa[i]); }
+	#else
+		serial_write(0xFF);
+	#endif
+	serial_write(FEND);
+}
+
 void kiss_indicate_ready() {
 	serial_write(FEND);
 	serial_write(CMD_READY);