Allow init() to be called in sketch to reset and re-initialise TFT

Solution to Issue #85

TFT_eSPI.cpp

@@ -123,6 +123,8 @@ TFT_eSPI::TFT_eSPI(int16_t w, int16_t h)
   locked = true;        // ESP32 transaction mutex lock flags
   inTransaction = false;
 
+  _booted = true;
+
   addr_row = 0xFFFF;
   addr_col = 0xFFFF;
 
@@ -168,6 +170,8 @@ void TFT_eSPI::begin(void)
 ** Description:             Reset, then initialise the TFT display registers
 ***************************************************************************************/
 void TFT_eSPI::init(void)
+{
+  if (_booted)
   {
 #if !defined (ESP32)
   #ifdef TFT_CS
@@ -224,6 +228,10 @@ void TFT_eSPI::init(void)
     pinMode(TFT_DC, OUTPUT);
 #endif
 
+    _booted = false;
+  } // end of: if just _booted
+
+
   // Toggle RST low to reset
 #ifdef TFT_RST
   if (TFT_RST >= 0) {
@@ -234,13 +242,13 @@ void TFT_eSPI::init(void)
     digitalWrite(TFT_RST, HIGH);
     delay(150);
   }
-#endif
-
+#else
+  // Or use the software reset
   spi_begin();
   writecommand(TFT_SWRST); // Software reset
   spi_end();
-  
-  delay(5); // Wait for software reset to complete
+  delay(120); // Wait for software reset to complete
+#endif
 
   spi_begin();
   
@@ -264,6 +272,7 @@ void TFT_eSPI::init(void)
 
   spi_end();
 
+  setRotation(rotation);
 }
 
 

TFT_eSPI.h

@@ -516,6 +516,7 @@ class TFT_eSPI : public Print {
   bool     textwrap;   // If set, 'wrap' text at right edge of display
   bool     _swapBytes; // Swap the byte order for TFT pushImage()
   bool     locked, inTransaction; // Transaction and mutex lock flags for ESP32
+  bool     _booted;
 
   int32_t  _lastColor;
 

library.json

@@ -1,6 +1,6 @@
 {
   "name": "TFT_eSPI",
-  "version": "0.18.12",
+  "version": "0.18.13",
   "keywords": "TFT, ESP8266, NodeMCU, ESP32, ILI9341, ST7735, ILI9163, S6D02A1, ILI9486",
   "description": "A TFT SPI graphics library for ESP8266",
   "repository":

library.properties

@@ -1,5 +1,5 @@
 name=TFT_eSPI
-version=0.18.12
+version=0.18.13
 author=Bodmer
 maintainer=Bodmer
 sentence=A fast TFT library for ESP8266 processors and the Arduino IDE