Fix SPI ILI9481

ILI9481 with 8 bit parallel worked OK but SPI needs an 18 bit colour interface.

Processors/TFT_eSPI_ESP32.c

@@ -173,7 +173,7 @@ void TFT_eSPI::pushPixels(const void* data_in, uint32_t len)
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////
-#elif !defined (ILI9488_DRIVER) && !defined (TFT_PARALLEL_8_BIT) // Most displays
+#elif !defined (ILI9481_DRIVER) && !defined (ILI9488_DRIVER) && !defined (TFT_PARALLEL_8_BIT) // Most displays
 ////////////////////////////////////////////////////////////////////////////////////////
 
 /***************************************************************************************
@@ -349,7 +349,7 @@ void TFT_eSPI::pushPixels(const void* data_in, uint32_t len){
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////
-#elif defined (ILI9488_DRIVER) && !defined (TFT_PARALLEL_8_BIT)// Now code for ILI9488
+#elif (defined (ILI9481_DRIVER) || defined (ILI9488_DRIVER)) && !defined (TFT_PARALLEL_8_BIT)// Now code for ILI9481/8
 ////////////////////////////////////////////////////////////////////////////////////////
 
 /***************************************************************************************

Processors/TFT_eSPI_ESP32.h

@@ -52,7 +52,7 @@
 #endif
 
 // Code to check if DMA is busy, used by SPI bus transaction transaction and endWrite functions
-#if !defined(TFT_PARALLEL_8_BIT) && !defined(ILI9488_DRIVER) && !defined (RPI_DISPLAY_TYPE)
+#if !defined(TFT_PARALLEL_8_BIT) && !defined(ILI9481_DRIVER)  && !defined(ILI9488_DRIVER) && !defined (RPI_DISPLAY_TYPE) || (defined (RPI_DISPLAY_TYPE) && defined (ST7796_DRIVER))
   #define ESP32_DMA
   // Code to check if DMA is busy, used by SPI DMA + transaction + endWrite functions
   #define DMA_BUSY_CHECK  dmaWait()
@@ -351,7 +351,7 @@
 ////////////////////////////////////////////////////////////////////////////////////////
 // Macros to write commands/pixel colour data to an ILI9488 TFT
 ////////////////////////////////////////////////////////////////////////////////////////
-#elif  defined (ILI9488_DRIVER) // 16 bit colour converted to 3 bytes for 18 bit RGB
+#elif  defined (ILI9481_DRIVER) || defined (ILI9488_DRIVER)// 16 bit colour converted to 3 bytes for 18 bit RGB
 
   // Write 8 bits to TFT
   #define tft_Write_8(C)   spi.transfer(C)

Processors/TFT_eSPI_ESP8266.c

@@ -109,7 +109,7 @@ void TFT_eSPI::pushSwapBytePixels(const void* data_in, uint32_t len){
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////
-#elif defined (ILI9488_DRIVER)
+#elif defined (ILI9481_DRIVER) || defined (ILI9488_DRIVER)
 ////////////////////////////////////////////////////////////////////////////////////////
 
 /***************************************************************************************

Processors/TFT_eSPI_ESP8266.h

@@ -117,7 +117,7 @@
 ////////////////////////////////////////////////////////////////////////////////////////
 // Macros to write commands/pixel colour data to an ILI9488 TFT
 ////////////////////////////////////////////////////////////////////////////////////////
-#if  defined (ILI9488_DRIVER) // 16 bit colour converted to 3 bytes for 18 bit RGB
+#if  defined (ILI9481_DRIVER) || defined (ILI9488_DRIVER) // 16 bit colour converted to 3 bytes for 18 bit RGB
 
   // Write 8 bits to TFT
   #define tft_Write_8(C)   spi.transfer(C)

Processors/TFT_eSPI_Generic.c

@@ -168,7 +168,7 @@ void TFT_eSPI::pushPixels(const void* data_in, uint32_t len)
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////
-#elif defined (ILI9488_DRIVER) // For 24 bit SPI colour TFT                             
+#elif defined (ILI9481_DRIVER) || defined (ILI9488_DRIVER) // For 24 bit SPI colour TFT                             
 ////////////////////////////////////////////////////////////////////////////////////////
 
 /***************************************************************************************

Processors/TFT_eSPI_Generic.h

@@ -94,7 +94,7 @@
 ////////////////////////////////////////////////////////////////////////////////////////
 // Macros to write commands/pixel colour data to an ILI9488 TFT
 ////////////////////////////////////////////////////////////////////////////////////////
-#if  defined (ILI9488_DRIVER) // 16 bit colour converted to 3 bytes for 18 bit RGB
+#if  defined (ILI9481_DRIVER) || defined (ILI9488_DRIVER) // 16 bit colour converted to 3 bytes for 18 bit RGB
 
   // Write 8 bits to TFT
   #define tft_Write_8(C)   spi.transfer(C)

Processors/TFT_eSPI_STM32.c

@@ -260,7 +260,7 @@ void TFT_eSPI::pushPixels(const void* data_in, uint32_t len)
 }
 
 ////////////////////////////////////////////////////////////////////////////////////////
-#elif defined (ILI9488_DRIVER) // For 24 bit colour TFT                                 ############# UNTESTED ###################
+#elif defined (ILI9481_DRIVER) || defined (ILI9488_DRIVER) // For 24 bit colour TFT                                 ############# UNTESTED ###################
 ////////////////////////////////////////////////////////////////////////////////////////
 
 /***************************************************************************************

Processors/TFT_eSPI_STM32.h

@@ -987,7 +987,7 @@
 ////////////////////////////////////////////////////////////////////////////////////////
 // Macros to write commands/pixel colour data to a SPI ILI9488 TFT
 ////////////////////////////////////////////////////////////////////////////////////////
-#elif  defined (ILI9488_DRIVER) // 16 bit colour converted to 3 bytes for 18 bit RGB
+#elif  defined (ILI9481_DRIVER) || defined (ILI9488_DRIVER) // 16 bit colour converted to 3 bytes for 18 bit RGB
 
   // Write 8 bits to TFT
   #define tft_Write_8(C) \

TFT_Drivers/ILI9481_Init.h

@@ -53,7 +53,15 @@
     writedata(0x0A);
 
     writecommand(0x3A);
-    writedata(0x55);
+    #ifdef TFT_PARALLEL_8_BIT
+      writedata(0x55);           // 16 bit colour interface
+    #else
+      writedata(0x66);           // 18 bit colour interface
+    #endif
+    
+    #ifndef TFT_PARALLEL_8_BIT
+      writecommand(TFT_INVON);
+    #endif
 
     writecommand(TFT_CASET);
     writedata(0x00);

TFT_eSPI.h

@@ -16,7 +16,7 @@
 #ifndef _TFT_eSPIH_
 #define _TFT_eSPIH_
 
-#define TFT_ESPI_VERSION "2.3.4"
+#define TFT_ESPI_VERSION "2.3.41"
 
 // Bit level feature flags
 // Bit 0 set: viewport capability

library.json

 {
   "name": "TFT_eSPI",
-  "version": "2.3.4",
+  "version": "2.3.41",
   "keywords": "Arduino, tft, ePaper, display, STM32, ESP8266, NodeMCU, ESP32, M5Stack, ILI9341, ST7735, ILI9163, S6D02A1, ILI9486, ST7789, RM68140",
   "description": "A TFT and ePaper SPI graphics library with optimisation for ESP8266, ESP32 and STM32",
   "repository":

library.properties

 name=TFT_eSPI
-version=2.3.4
+version=2.3.41
 author=Bodmer
 maintainer=Bodmer
 sentence=TFT graphics library for Arduino processors with performance optimisation for STM32, ESP8266 and ESP32