Add ESP32 VSPI or HSPI port option + others

If the VSPI port is in use and pins are not accessible (e.g. TTGO
T-Beam)
then add or uncomment the following line in the setup header file:
//#define USE_HSPI_PORT

Minor performance tweaks for ESP32 to minimise the occurence of the slow
transaction overhead.

setAddrWindow now takes xstart, ystart, width and height as inputs

Multi-sample raw touch x and y for noisy displays

Example update for setAddrWindow change compatibility

examples/160 x 128/Pong_v3/Pong_v3.ino

@@ -107,13 +107,17 @@ void midline() {
   // If the ball is not on the line then don't redraw the line
   if ((ball_x<dashline_x-ball_w) && (ball_x > dashline_x+dashline_w)) return;
 
+  tft.startWrite();
+
   // Quick way to draw a dashed line
-  tft.setAddrWindow(dashline_x,0,dashline_x+dashline_w-1,h);
+  tft.setAddrWindow(dashline_x, 0, dashline_w, h);
   
   for(int16_t i = 0; i < dashline_n; i+=2) {
     tft.pushColor(WHITE, dashline_w*dashline_h); // push dash pixels
     tft.pushColor(BLACK, dashline_w*dashline_h); // push gap pixels
   }
+
+  tft.endWrite();
 }
 
 void lpaddle() {

examples/160 x 128/TFT_graphicstest_PDQ3/TFT_graphicstest_PDQ3.ino

@@ -308,14 +308,16 @@ uint32_t testHaD()
     0x0a, 0x2b, 0x0b, 0x41, 0x0a, 0x29, 0x0b, 0x43, 0x0a, 0x27, 0x0a, 0x46, 0x0a, 0x25, 0x0a, 0x49, 
     0x09, 0x23, 0x08, 0x4e, 0x08, 0x96, 0x12 
   };
-  
+
   tft.fillScreen(TFT_BLACK);
 
   uint32_t start = micros_start();
-  
+
+  tft.startWrite();
+
   for (int i = 0; i < 0x10; i++)
   {
-    tft.setAddrWindow(0, 0, tft.width()-1, tft.height()-1);
+    tft.setAddrWindow(0, 0, tft.width(), tft.height());
 
     uint16_t cnt = 0;
     uint16_t color = tft.color565((i << 4) | i, (i << 4) | i, (i << 4) | i);
@@ -335,6 +337,8 @@ uint32_t testHaD()
     }
   }
 
+  tft.endWrite();
+
   uint32_t t = micros() - start;
 
   tft.setTextColor(TFT_YELLOW);

examples/320 x 240/TFT_Mandlebrot/TFT_Mandlebrot.ino

@@ -7,7 +7,7 @@
 
 TFT_eSPI tft = TFT_eSPI();       // Invoke custom library
 
-#define ILI9341_GREY 0x7BEF
+#define TFT_GREY 0x7BEF
 
 unsigned long runTime = 0;
 
@@ -16,8 +16,9 @@ uint16_t x0 = 0, x1 = 0, yy0 = 0, yy1 = 0;
 
 void setup()
 {
+  Serial.begin(250000);
   //randomSeed(analogRead(A0));
-
+  Serial.println();
   // Setup the LCD
   tft.init();
   tft.setRotation(3);
@@ -27,7 +28,8 @@ void loop()
 {
   runTime = millis();
 
-  tft.fillScreen(ILI9341_BLACK);
+  tft.fillScreen(TFT_BLACK);
+  tft.startWrite();
   for (int px = 1; px < 320; px++)
   {
     for (int py = 0; py < 240; py++)
@@ -49,6 +51,9 @@ void loop()
       yield();tft.drawPixel(px, py, color);
     }
   }
+  tft.endWrite();
+
+  Serial.println(millis()-runTime);
   while(1) yield();
 }
 

examples/320 x 240/TFT_Pong/TFT_Pong.ino

@@ -108,13 +108,17 @@ void midline() {
   // If the ball is not on the line then don't redraw the line
   if ((ball_x<dashline_x-ball_w) && (ball_x > dashline_x+dashline_w)) return;
 
+  tft.startWrite();
+
   // Quick way to draw a dashed line
-  tft.setWindow(dashline_x,0,dashline_x+dashline_w-1,h);
+  tft.setAddrWindow(dashline_x, 0, dashline_w, h);
   
   for(int16_t i = 0; i < dashline_n; i+=2) {
     tft.pushColor(WHITE, dashline_w*dashline_h); // push dash pixels
     tft.pushColor(BLACK, dashline_w*dashline_h); // push gap pixels
   }
+
+  tft.endWrite();
 }
 
 void lpaddle() {

examples/320 x 240/TFT_graphicstest_PDQ/TFT_graphicstest_PDQ.ino

@@ -336,10 +336,10 @@ uint32_t testHaD()
 	tft.fillScreen(TFT_BLACK);
 
 	uint32_t start = micros_start();
-	
+
 	for (int i = 0; i < 0x10; i++)
 	{
-		tft.setWindow(0, 0, 240-1, 320-1);
+		tft.setAddrWindow(0, 0, 240, 320);
 
 		uint16_t cnt = 0;
 		uint16_t color = tft.color565((i << 4) | i, (i << 4) | i, (i << 4) | i);
@@ -347,6 +347,7 @@ uint32_t testHaD()
 
 		const uint8_t *cmp = &HaD_240x320[0];
 
+		tft.startWrite();
 		while (cmp < &HaD_240x320[sizeof(HaD_240x320)])
 		{
 			cnt = pgm_read_byte(cmp++);
@@ -354,6 +355,7 @@ uint32_t testHaD()
 			tft.pushColor(curcolor, cnt);	// PDQ_GFX has count
 			curcolor ^= color;
 		}
+		tft.endWrite();
 	}
 
 	uint32_t t = micros() - start;

examples/480 x 320/TFT_flash_jpg/TFT_flash_jpg.ino

@@ -171,11 +171,14 @@ void renderJPEG(int xpos, int ypos) {
     // calculate how many pixels must be drawn
     uint32_t mcu_pixels = win_w * win_h;
 
+    tft.startWrite();
+
     // draw image MCU block only if it will fit on the screen
     if (( mcu_x + win_w ) <= tft.width() && ( mcu_y + win_h ) <= tft.height())
     {
+
       // Now set a MCU bounding window on the TFT to push pixels into (x, y, x + width - 1, y + height - 1)
-      tft.setWindow(mcu_x, mcu_y, mcu_x + win_w - 1, mcu_y + win_h - 1);
+      tft.setAddrWindow(mcu_x, mcu_y, win_w, win_h);
 
       // Write all MCU pixels to the TFT window
       while (mcu_pixels--) {
@@ -185,6 +188,8 @@ void renderJPEG(int xpos, int ypos) {
 
     }
     else if ( (mcu_y + win_h) >= tft.height()) JpegDec.abort(); // Image has run off bottom of screen so abort decoding
+
+    tft.endWrite();
   }
 
   // calculate how long it took to draw the image

examples/480 x 320/TFT_ring_meter/TFT_ring_meter.ino

@@ -251,8 +251,10 @@ void drawIcon(const unsigned short* icon, int16_t x, int16_t y, int8_t width, in
 
   uint16_t  pix_buffer[BUFF_SIZE];   // Pixel buffer (16 bits per pixel)
 
+  tft.startWrite();
+
   // Set up a window the right size to stream pixels into
-  tft.setWindow(x, y, x + width - 1, y + height - 1);
+  tft.setAddrWindow(x, y, width, height);
 
   // Work out the number whole buffers to send
   uint16_t nb = ((uint16_t)height * width) / BUFF_SIZE;
@@ -273,5 +275,7 @@ void drawIcon(const unsigned short* icon, int16_t x, int16_t y, int8_t width, in
     for (int i = 0; i < np; i++) pix_buffer[i] = pgm_read_word(&icon[nb * BUFF_SIZE + i]);
     tft.pushColors(pix_buffer, np);
   }
+
+  tft.endWrite();
 }