v1.2.92: display flip mode implemented

src/hal/heltec.h

@@ -3,6 +3,7 @@
 #define CFG_sx1276_radio 1
 
 #define HAS_DISPLAY U8X8_SSD1306_128X64_NONAME_HW_I2C // OLED-Display on board
+//#define DISPLAY_FLIP  1 // uncomment this for rotated display
 #define HAS_LED GPIO_NUM_25 // white LED on board
 #define HAS_BUTTON GPIO_NUM_0 // button "PROG" on board
 

src/hal/lolin32_lora.h

@@ -5,6 +5,7 @@
 #define DISABLE_BROWNOUT 1 // comment out if you want to keep brownout feature
 
 #define HAS_DISPLAY U8X8_SSD1306_128X64_NONAME_HW_I2C // OLED-Display on board
+//#define DISPLAY_FLIP  1 // uncomment this for rotated display
 #define HAS_LED NOT_A_PIN // Led os on same pin as Lora SS pin, to avoid problems, we don't use it
 #define LED_ACTIVE_LOW 1  // Onboard LED is active when pin is LOW
                           // Anyway shield is on over the LoLin32 board, so we won't be able to see this LED

src/hal/lolin32lite_lora.h

@@ -5,6 +5,7 @@
 #define DISABLE_BROWNOUT 1 // comment out if you want to keep brownout feature
 
 #define HAS_DISPLAY U8X8_SSD1306_128X64_NONAME_HW_I2C // OLED-Display on board
+//#define DISPLAY_FLIP  1 // uncomment this for rotated display
 #define HAS_LED       22  // ESP32 GPIO12 (pin22) On Board LED
 #define LED_ACTIVE_LOW 1  // Onboard LED is active when pin is LOW
 #define HAS_RGB_LED   13  // ESP32 GPIO13 (pin13) On Board Shield WS2812B RGB LED

src/hal/ttgov1.h

@@ -3,6 +3,7 @@
 #define CFG_sx1276_radio 1
 
 #define HAS_DISPLAY U8X8_SSD1306_128X64_NONAME_HW_I2C // OLED-Display on board
+//#define DISPLAY_FLIP  1 // uncomment this for rotated display
 #define HAS_LED GPIO_NUM_2 // white LED on board
 #define LED_ACTIVE_LOW 1  // Onboard LED is active when pin is LOW
 #define HAS_BUTTON GPIO_NUM_0 // button "PRG" on board

src/hal/ttgov2.h

@@ -3,6 +3,7 @@
 #define CFG_sx1276_radio 1 // HPD13A LoRa SoC
 
 #define HAS_DISPLAY U8X8_SSD1306_128X64_NONAME_HW_I2C
+//#define DISPLAY_FLIP  1 // uncomment this for rotated display
 #define HAS_LED NOT_A_PIN // on-board LED is wired to SCL (used by display) therefore totally useless
 
 // disable brownout detection (needed on TTGOv2 for battery powered operation)