Remove redundant ST7735_BL variant defs.

No need for _V05 and _V03 definitions - I think there was a slight misunderstanding
on how variant files are supposed to _decrease_ #ifdef code in the cpp files.

src/graphics/TFTDisplay.cpp

@@ -95,14 +95,8 @@ class LGFX : public lgfx::LGFX_Device
         {
             auto cfg = _light_instance.config(); // Gets a structure for backlight settings.
 
-#ifdef ST7735_BL_V03
-            cfg.pin_bl = ST7735_BL_V03;
-#elif defined(ST7735_BL_V05)
-            cfg.pin_bl = ST7735_BL_V05;
-#else
             cfg.pin_bl = ST7735_BL; // Pin number to which the backlight is connected
-#endif
+            cfg.invert = true;      // true to invert the brightness of the backlight
-            cfg.invert = true; // true to invert the brightness of the backlight
             // cfg.freq = 44100;    // PWM frequency of backlight
             // cfg.pwm_channel = 1; // PWM channel number to use
 
@@ -581,11 +575,9 @@ void TFTDisplay::sendCommand(uint8_t com)
         display(true);
         if (settingsMap[displayBacklight] > 0)
             digitalWrite(settingsMap[displayBacklight], TFT_BACKLIGHT_ON);
-#elif defined(ST7735_BL_V03)
+#elif defined(ST7735_BL)
-        digitalWrite(ST7735_BL_V03, TFT_BACKLIGHT_ON);
+        pinMode(ST7735_BL, OUTPUT);
-#elif defined(ST7735_BL_V05)
+        digitalWrite(ST7735_BL, TFT_BACKLIGHT_ON);
-        pinMode(ST7735_BL_V05, OUTPUT);
-        digitalWrite(ST7735_BL_V05, TFT_BACKLIGHT_ON);
 #elif !defined(RAK14014) && !defined(M5STACK) && !defined(UNPHONE)
         tft->wakeup();
         tft->powerSaveOff();
@@ -614,11 +606,9 @@ void TFTDisplay::sendCommand(uint8_t com)
         tft->clear();
         if (settingsMap[displayBacklight] > 0)
             digitalWrite(settingsMap[displayBacklight], !TFT_BACKLIGHT_ON);
-#elif defined(ST7735_BL_V03)
+#elif defined(ST7735_BL)
-        digitalWrite(ST7735_BL_V03, !TFT_BACKLIGHT_ON);
+        pinMode(ST7735_BL, OUTPUT);
-#elif defined(ST7735_BL_V05)
+        digitalWrite(ST7735_BL, !TFT_BACKLIGHT_ON);
-        pinMode(ST7735_BL_V05, OUTPUT);
-        digitalWrite(ST7735_BL_V05, !TFT_BACKLIGHT_ON);
 #elif !defined(RAK14014) && !defined(M5STACK) && !defined(UNPHONE)
         tft->sleep();
         tft->powerSaveOn();
@@ -720,11 +710,9 @@ bool TFTDisplay::connect()
     LOG_INFO("Power to TFT Backlight\n");
 #endif
 
-#ifdef ST7735_BL_V03
+#ifdef ST7735_BL
-    digitalWrite(ST7735_BL_V03, TFT_BACKLIGHT_ON);
+    pinMode(ST7735_BL, OUTPUT);
-#elif defined(ST7735_BL_V05)
+    digitalWrite(ST7735_BL, TFT_BACKLIGHT_ON);
-    pinMode(ST7735_BL_V05, OUTPUT);
-    digitalWrite(ST7735_BL_V05, TFT_BACKLIGHT_ON);
 #endif
 #ifdef UNPHONE
     unphone.backlight(true); // using unPhone library

src/main.cpp

@@ -280,15 +280,11 @@ void setup()
 
 #if defined(VEXT_ENABLE_V03)
     pinMode(VEXT_ENABLE_V03, OUTPUT);
-    pinMode(ST7735_BL_V03, OUTPUT);
     digitalWrite(VEXT_ENABLE_V03, 0); // turn on the display power and antenna boost
-    digitalWrite(ST7735_BL_V03, 1);   // display backligth on
     LOG_DEBUG("HELTEC Detect Tracker V1.0\n");
 #elif defined(VEXT_ENABLE_V05)
     pinMode(VEXT_ENABLE_V05, OUTPUT);
-    pinMode(ST7735_BL_V05, OUTPUT);
     digitalWrite(VEXT_ENABLE_V05, 1); // turn on the lora antenna boost
-    digitalWrite(ST7735_BL_V05, 1);   // turn on display backligth
     LOG_DEBUG("HELTEC Detect Tracker V1.1\n");
 #elif defined(VEXT_ENABLE) && defined(VEXT_ON_VALUE)
     pinMode(VEXT_ENABLE, OUTPUT);

src/sleep.cpp

@@ -250,7 +250,6 @@ void doDeepSleep(uint32_t msecToWake, bool skipPreflight = false)
     digitalWrite(VEXT_ENABLE_V03, 1); // turn off the display power
 #elif defined(VEXT_ENABLE_V05)
     digitalWrite(VEXT_ENABLE_V05, 0); // turn off the lora amplifier power
-    digitalWrite(ST7735_BL_V05, 0);   // turn off the display power
 #elif defined(VEXT_ENABLE) && defined(VEXT_ON_VALUE)
     digitalWrite(VEXT_ENABLE, !VEXT_ON_VALUE); // turn on the display power
 #elif defined(VEXT_ENABLE)

variants/heltec_wireless_tracker/variant.h

@@ -15,7 +15,7 @@
 #define ST7735_RESET 39
 #define ST7735_MISO -1
 #define ST7735_BUSY -1
-#define ST7735_BL_V05 21 /* V1.1 PCB marking */
+#define ST7735_BL 21 /* V1.1 PCB marking */
 #define ST7735_SPI_HOST SPI3_HOST
 #define SPI_FREQUENCY 40000000
 #define SPI_READ_FREQUENCY 16000000

variants/heltec_wireless_tracker_V1_0/variant.h

@@ -15,7 +15,7 @@
 #define ST7735_RESET 39
 #define ST7735_MISO -1
 #define ST7735_BUSY -1
-#define ST7735_BL_V03 45
+#define ST7735_BL 45
 #define ST7735_SPI_HOST SPI3_HOST
 #define SPI_FREQUENCY 40000000
 #define SPI_READ_FREQUENCY 16000000

variants/tracksenger/internal/variant.h

@@ -17,7 +17,7 @@
 #define ST7735_RESET 39
 #define ST7735_MISO -1
 #define ST7735_BUSY -1
-#define ST7735_BL_V05 21 /* V1.1 PCB marking */
+#define ST7735_BL 21 /* V1.1 PCB marking */
 #define ST7735_SPI_HOST SPI3_HOST
 #define SPI_FREQUENCY 40000000
 #define SPI_READ_FREQUENCY 16000000

variants/tracksenger/lcd/variant.h

@@ -16,7 +16,7 @@
 #define ST7789_CS 38
 #define ST7789_RS 40
 #define ST7789_BL 21
-// P#define ST7735_BL_V05 21 /* V1.1 PCB marking */
+// P#define ST7735_BL 21 /* V1.1 PCB marking */
 
 #define ST7789_RESET -1
 #define ST7789_MISO -1
@@ -41,7 +41,7 @@
 // #define ST7735_RESET 39
 // #define ST7735_MISO -1
 // #define ST7735_BUSY -1
-#define ST7735_BL_V05 21 /* V1.1 PCB marking */
+#define ST7735_BL 21 /* V1.1 PCB marking */
 // #define ST7735_SPI_HOST SPI3_HOST
 // #define SPI_FREQUENCY 40000000
 // #define SPI_READ_FREQUENCY 16000000

variants/tracksenger/oled/variant.h

@@ -19,7 +19,7 @@
 // #define ST7735_RESET 39
 // #define ST7735_MISO -1
 // #define ST7735_BUSY -1
-#define ST7735_BL_V05 21 /* V1.1 PCB marking */
+#define ST7735_BL 21 /* V1.1 PCB marking */
 // #define ST7735_SPI_HOST SPI3_HOST
 // #define SPI_FREQUENCY 40000000
 // #define SPI_READ_FREQUENCY 16000000