added consts for display rotation for clarification

src/drivers/displays/amoledDisplayDriver.cpp

@@ -1,5 +1,6 @@
 #include "displayDriver.h"
 
+
 #ifdef AMOLED_DISPLAY
 
 #include <rm67162.h>
@@ -10,6 +11,7 @@
 #include "version.h"
 #include "monitor.h"
 #include "OpenFontRender.h"
+#include "rotation.h"
 
 #define WIDTH 536
 #define HEIGHT 240
@@ -30,7 +32,8 @@ TFT_eSprite background = TFT_eSprite(&tft);
 void amoledDisplay_Init(void)
 {
   rm67162_init();
-  lcd_setRotation(1);
+//  lcd_setRotation(1);
+  lcd_setRotation(LANDSCAPE);
 
   background.createSprite(WIDTH, HEIGHT);
   background.setSwapBytes(true);
@@ -51,11 +54,11 @@ void amoledDisplay_AlternateScreenState(void)
   screen_state ^= 1;
 }
 
-int screen_rotation = 1;
+int screen_rotation = LANDSCAPE;
 void amoledDisplay_AlternateRotation(void)
 {
-  screen_rotation == 1 ? lcd_setRotation(3) : lcd_setRotation(1);
+    screen_rotation = flipRotation(screen_rotation);
-  screen_rotation ^= 1;
+    screen_rotation ^= 1;
 }
 
 void amoledDisplay_MinerScreen(unsigned long mElapsed)

src/drivers/displays/dongleDisplayDriver.cpp

@@ -9,6 +9,7 @@
 #include "version.h"
 #include "monitor.h"
 #include "OpenFontRender.h"
+#include "rotation.h"
 
 #ifdef USE_LED
 #include <FastLED.h>
@@ -85,7 +86,8 @@ void dongleDisplay_Init(void)
   #endif // USE_LED
 
   tft.init();
-  tft.setRotation(3);
+//  tft.setRotation(ROTATION_270);
+  tft.setRotation(LANDSCAPE_INVERTED);
   tft.setSwapBytes(true);
   background.createSprite(BUFFER_WIDTH, BUFFER_HEIGHT);
   background.setSwapBytes(true);
@@ -110,7 +112,7 @@ void dongleDisplay_AlternateScreenState(void)
 
 void dongleDisplay_AlternateRotation(void)
 {
-  tft.getRotation() == 1 ? tft.setRotation(3) : tft.setRotation(1);
+  tft.setRotation(flipRotation(tft.getRotation()));
 }
 
 void dongleDisplay_MinerScreen(unsigned long mElapsed)

src/drivers/displays/esp23_2432s028r.cpp

@@ -12,6 +12,7 @@
 #include "monitor.h"
 #include "OpenFontRender.h"
 #include <SPI.h>
+#include "rotation.h"
 
 #define WIDTH 130 //320
 #define HEIGHT 170 
@@ -31,7 +32,8 @@ bool hasChangedScreen = true;
 void esp32_2432S028R_Init(void)
 { 
   tft.init();
-  tft.setRotation(1);
+//  tft.setRotation(1);
+  tft.setRotation(ROTATION_90);
   #ifdef ESP32_2432S028_2USB
   /*
   In addition to TFT_INVERSION this adjusts the gamma curve to have better
@@ -79,7 +81,7 @@ void esp32_2432S028R_AlternateScreenState(void)
 
 void esp32_2432S028R_AlternateRotation(void)
 {
-  tft.getRotation() == 1 ? tft.setRotation(3) : tft.setRotation(1);
+  tft.setRotation(flipRotation(tft.getRotation()));
   hasChangedScreen = true;
 }
 

src/drivers/displays/m5stickCDriver.cpp

@@ -9,6 +9,7 @@
 #include "media/Free_Fonts.h"
 #include "version.h"
 #include "monitor.h"
+#include "rotation.h"
 
 #define WIDTH 80
 #define HEIGHT 160
@@ -21,7 +22,8 @@ int screen_state = 1;
 void m5stickCDriver_Init(void)
 {
   M5.begin();
-  M5.Lcd.setRotation(1);
+//  M5.Lcd.setRotation(1);
+  M5.Lcd.setRotation(LANDSCAPE);
   M5.Lcd.setTextSize(1);
   M5.Lcd.fillScreen(BLACK);
   M5.Axp.ScreenBreath(10);  //screen brightness 7-15
@@ -42,8 +44,7 @@ void m5stickCDriver_AlternateScreenState(void)
 
 void m5stickCDriver_AlternateRotation(void)
 {
-  if (M5.Lcd.getRotation() == 3) M5.Lcd.setRotation(1);
+    M5.Lcd.setRotation(flipRotation(M5.Lcd.getRotation()));
-  else M5.Lcd.setRotation(3);
 }
 
 void m5stickCDriver_MinerScreen(unsigned long mElapsed)

src/drivers/displays/rotation.h

@@ -0,0 +1,42 @@
+//
+// Rotation can be 0, 90, 180 or 270 degrees, but TFT_eSPI cryptically
+// identifies these as 0, 1, 2, and 3.  ?!?!?!?!?!?
+//
+// Created by dwight on 3/14/24.
+//
+
+#ifndef NERDMINER_V2_ROTATION_H
+
+// Rotation value 0 sets the display to a portrait (tall) mode, with the USB jack at the top right.
+#define ROTATION_0      0
+#define PORTRAIT        ROTATION_0
+
+// Rotation 1 is landscape (wide) mode, with the USB jack at the bottom right.
+#define ROTATION_90     1
+#define LANDSCAPE       ROTATION_90
+
+// Rotation value 2 is also a portrait mode, with the USB jack at the bottom left.
+#define ROTATION_180        2
+#define PORTRAIT_INVERTED   ROTATION_180
+
+// Rotation 3 is also landscape, but with the USB jack at the top left.
+#define ROTATION_270        3
+#define LANDSCAPE_INVERTED  ROTATION_270
+
+// Helper function to rotate display left (-90 deg)
+int rotationLeft(int d) {
+    return (d-ROTATION_90) % 4;
+}
+
+// Helper function to rotate display right (90 deg)
+int rotationRight(int d) {
+    return (d+ROTATION_90) % 4;
+}
+
+// Helper function to rotate display 180 deg
+int flipRotation(int d) {
+    return (d+ROTATION_180) % 4;
+}
+
+#define NERDMINER_V2_ROTATION_H
+#endif //NERDMINER_V2_ROTATION_H

src/drivers/displays/tDisplayDriver.cpp

@@ -9,6 +9,7 @@
 #include "version.h"
 #include "monitor.h"
 #include "OpenFontRender.h"
+#include "rotation.h"
 
 #define WIDTH 340
 #define HEIGHT 170
@@ -21,9 +22,10 @@ void tDisplay_Init(void)
 {
   tft.init();
   #ifdef LILYGO_S3_T_EMBED
-  tft.setRotation(3);
+//  tft.setRotation(3);
+  tft.setRotation(ROTATION_270);
   #else
-  tft.setRotation(1);
+  tft.setRotation(ROTATION_90);
   #endif
   tft.setSwapBytes(true);                 // Swap the colour byte order when rendering
   background.createSprite(WIDTH, HEIGHT); // Background Sprite
@@ -49,7 +51,7 @@ void tDisplay_AlternateScreenState(void)
 
 void tDisplay_AlternateRotation(void)
 {
-  tft.getRotation() == 1 ? tft.setRotation(3) : tft.setRotation(1);
+  tft.setRotation(flipRotation(tft.getRotation()));
 }
 
 void tDisplay_MinerScreen(unsigned long mElapsed)

src/drivers/displays/tDisplayV1Driver.cpp

@@ -9,6 +9,7 @@
 #include "version.h"
 #include "monitor.h"
 #include "OpenFontRender.h"
+#include "rotation.h"
 
 #define WIDTH 240
 #define HEIGHT 135
@@ -20,7 +21,8 @@ TFT_eSprite background = TFT_eSprite(&tft); // Invoke library sprite
 void tDisplay_Init(void)
 {
   tft.init();
-  tft.setRotation(1);
+//  tft.setRotation(1);
+  tft.setRotation(ROTATION_90);
   tft.setSwapBytes(true);                 // Swap the colour byte order when rendering
   background.createSprite(WIDTH, HEIGHT); // Background Sprite
   background.setSwapBytes(true);
@@ -45,7 +47,7 @@ void tDisplay_AlternateScreenState(void)
 
 void tDisplay_AlternateRotation(void)
 {
-  tft.getRotation() == 1 ? tft.setRotation(3) : tft.setRotation(1);
+  tft.setRotation(flipRotation(tft.getRotation()));
 }
 
 void tDisplay_MinerScreen(unsigned long mElapsed)

src/drivers/displays/t_qtDisplayDriver.cpp

@@ -9,6 +9,7 @@
 #include "version.h"
 #include "monitor.h"
 #include "OpenFontRender.h"
+#include "rotation.h"
 
 #define WIDTH 128
 #define HEIGHT 128
@@ -20,7 +21,7 @@ TFT_eSprite background = TFT_eSprite(&tft); // Invoke library sprite
 void t_qtDisplay_Init(void)
 {
   tft.init();
-  tft.setRotation(1);
+  tft.setRotation(LANDSCAPE);
   tft.setSwapBytes(true);                 // Swap the colour byte order when rendering
   background.createSprite(WIDTH, HEIGHT); // Background Sprite
   background.setSwapBytes(true);
@@ -45,7 +46,7 @@ void t_qtDisplay_AlternateScreenState(void)
 
 void t_qtDisplay_AlternateRotation(void)
 {
-  tft.setRotation((tft.getRotation()+1) % 4);
+  tft.setRotation(rotationRight(tft.getRotation()));
 }
 
 void t_qtDisplay_MinerScreen(unsigned long mElapsed)