Fix #1960

TFT pixel reads for smooth graphics functions now supported.

TFT_eSPI.cpp

@@ -1071,7 +1071,7 @@ uint16_t TFT_eSPI::readPixel(int32_t x0, int32_t y0)
 
 #if defined(TFT_PARALLEL_8_BIT) || defined(RP2040_PIO_INTERFACE)
 
-  CS_L;
+  if (!inTransaction) CS_L;
 
   readAddrWindow(x0, y0, 1, 1);
 
@@ -1091,7 +1091,7 @@ uint16_t TFT_eSPI::readPixel(int32_t x0, int32_t y0)
     // Read window pixel 24 bit RGB values and fill in LS bits
     uint16_t rgb = ((readByte() & 0xF8) << 8) | ((readByte() & 0xFC) << 3) | (readByte() >> 3);
 
-    CS_H;
+    if (!inTransaction) CS_H;
 
     // Set masked pins D0- D7 to output
     busDir(dir_mask, OUTPUT);
@@ -1103,7 +1103,7 @@ uint16_t TFT_eSPI::readPixel(int32_t x0, int32_t y0)
     // Fetch the 16 bit BRG pixel
     uint16_t bgr = (readByte() << 8) | readByte();
 
-    CS_H;
+    if (!inTransaction) CS_H;
 
     // Set masked pins D0- D7 to output
     busDir(dir_mask, OUTPUT);

TFT_eSPI.h

@@ -16,7 +16,7 @@
 #ifndef _TFT_eSPIH_
 #define _TFT_eSPIH_
 
-#define TFT_ESPI_VERSION "2.4.77"
+#define TFT_ESPI_VERSION "2.4.78"
 
 // Bit level feature flags
 // Bit 0 set: viewport capability

library.json

 {
   "name": "TFT_eSPI",
-  "version": "2.4.77",
+  "version": "2.4.78",
   "keywords": "Arduino, tft, display, ttgo, LilyPi, WT32-SC01, ePaper, display, Pico, RP2040 Nano Connect, RP2040, STM32, ESP8266, NodeMCU, ESP32, M5Stack, ILI9341, ST7735, ILI9163, S6D02A1, ILI9481, ILI9486, ILI9488, ST7789, ST7796, RM68140, SSD1351, SSD1963, ILI9225, HX8357D, GC9A01, R61581",
   "description": "A TFT and ePaper SPI graphics library with optimisation for Raspberry Pi Pico, RP2040, ESP8266, ESP32 and STM32",
   "repository":

library.properties

 name=TFT_eSPI
-version=2.4.77
+version=2.4.78
 author=Bodmer
 maintainer=Bodmer
 sentence=TFT graphics library for Arduino processors with performance optimisation for RP2040, STM32, ESP8266 and ESP32