Added ability to configure display rotation

Display.h

@@ -201,6 +201,13 @@ bool display_init() {
       Wire.begin(SDA_OLED, SCL_OLED);
     #endif
 
+    #if HAS_EEPROM
+      uint8_t display_rotation = EEPROM.read(eeprom_addr(ADDR_CONF_DROT));
+    #elif MCU_VARIANT == MCU_NRF52
+      uint8_t display_rotation = eeprom_read(eeprom_addr(ADDR_CONF_DROT));
+    #endif
+    if (display_rotation < 0 or display_rotation > 3) display_rotation = 0xFF;
+
     #if DISP_CUSTOM_ADDR == true
       #if HAS_EEPROM
       uint8_t display_address = EEPROM.read(eeprom_addr(ADDR_CONF_DADR));
@@ -236,6 +243,14 @@ bool display_init() {
       return false;
     } else {
       set_contrast(&display, display_contrast);
+      if (display_rotation != 0xFF) {
+        if (display_rotation == 0 || display_rotation == 2) {
+          disp_mode = DISP_MODE_LANDSCAPE;
+        } else {
+          disp_mode = DISP_MODE_PORTRAIT;
+        }
+        display.setRotation(display_rotation);
+      } else {
         #if BOARD_MODEL == BOARD_RNODE_NG_20
           disp_mode = DISP_MODE_PORTRAIT;
           display.setRotation(3);
@@ -273,6 +288,7 @@ bool display_init() {
           disp_mode = DISP_MODE_PORTRAIT;
           display.setRotation(3);
         #endif
+      }
 
       update_area_positions();
       for (int i = 0; i < WATERFALL_SIZE; i++) {

Framing.h

@@ -56,6 +56,7 @@
   #define CMD_DISP_INT    0x45
   #define CMD_DISP_ADDR   0x63
   #define CMD_DISP_BLNK   0x64
+  #define CMD_DISP_ROT    0x67
   #define CMD_NP_INT      0x65
   #define CMD_BT_CTRL     0x46
   #define CMD_BT_PIN      0x62

RNode_Firmware.ino

@@ -1099,6 +1099,21 @@ void serialCallback(uint8_t sbyte) {
             display_unblank();
         }
 
+      #endif
+    } else if (command == CMD_DISP_ROT) {
+      #if HAS_DISPLAY
+        if (sbyte == FESC) {
+            ESCAPE = true;
+        } else {
+            if (ESCAPE) {
+                if (sbyte == TFEND) sbyte = FEND;
+                if (sbyte == TFESC) sbyte = FESC;
+                ESCAPE = false;
+            }
+            drot_conf_save(sbyte);
+            display_unblank();
+        }
+
       #endif
     } else if (command == CMD_NP_INT) {
       #if HAS_NP

ROM.h

@@ -39,6 +39,7 @@
   #define ADDR_CONF_DINT 0xB2
   #define ADDR_CONF_DADR 0xB3
   #define ADDR_CONF_DBLK 0xB4
+  #define ADDR_CONF_DROT 0xB8
   #define ADDR_CONF_PSET 0xB5
   #define ADDR_CONF_PINT 0xB6
   #define ADDR_CONF_BSET 0xB7

Utilities.h

@@ -1507,6 +1507,16 @@ void db_conf_save(uint8_t val) {
 	#endif
 }
 
+void drot_conf_save(uint8_t val) {
+	#if HAS_DISPLAY
+		if (val >= 0x00 and val <= 0x03) {
+			eeprom_update(eeprom_addr(ADDR_CONF_BSET), CONF_OK_BYTE);
+			eeprom_update(eeprom_addr(ADDR_CONF_DROT), val);
+			hard_reset();
+		}
+	#endif
+}
+
 void np_int_conf_save(uint8_t p_int) {
 	eeprom_update(eeprom_addr(ADDR_CONF_PSET), CONF_OK_BYTE);
 	eeprom_update(eeprom_addr(ADDR_CONF_PINT), p_int);