Add ESP32 S2 support

Tested with ESP32 board package 2.0.1

Additional boards manager URL may need to be updated to load the latest ESP32 board package!

Processors/TFT_eSPI_ESP32.c

@@ -8,22 +8,39 @@
 
 // Select the SPI port to use, ESP32 has 2 options
 #if !defined (TFT_PARALLEL_8_BIT)
+  #ifdef CONFIG_IDF_TARGET_ESP32
     #ifdef USE_HSPI_PORT
       SPIClass spi = SPIClass(HSPI);
     #else // use default VSPI port
       //SPIClass& spi = SPI;
       SPIClass spi = SPIClass(VSPI);
     #endif
+  #else
+    #ifdef USE_HSPI_PORT
+      SPIClass spi = SPIClass(HSPI);
+    #else // use FSPI port
+      //SPIClass& spi = SPI;
+      SPIClass spi = SPIClass(FSPI);
+    #endif
+  #endif
 #endif
 
 #ifdef ESP32_DMA
   // DMA SPA handle
   spi_device_handle_t dmaHAL;
+  #ifdef CONFIG_IDF_TARGET_ESP32
     #ifdef USE_HSPI_PORT
       spi_host_device_t spi_host = HSPI_HOST;
-  #else
+    #else // use VSPI port
       spi_host_device_t spi_host = VSPI_HOST;
     #endif
+  #else
+    #ifdef USE_HSPI_PORT
+      spi_host_device_t spi_host = (spi_host_device_t)1; // 1 scrambles display area!
+    #else // use FSPI port
+      spi_host_device_t spi_host = (spi_host_device_t)1; // 1 draws once then freezes
+    #endif
+  #endif
 #endif
 
 #if !defined (TFT_PARALLEL_8_BIT)

Processors/TFT_eSPI_ESP32.h

@@ -17,11 +17,37 @@
   #define SUPPORT_TRANSACTIONS
 #endif
 
+/*
+ESP32:
+FSPI not defined
+HSPI = 2, uses SPI2
+VSPI = 3, uses SPI3
+
+ESP32-S2:
+FSPI = 1, uses SPI2
+HSPI = 2, uses SPI3
+VSPI not defined
+
+ESP32 C3:
+FSPI = 0, uses SPI2 ???? To be checked
+HSPI = 1, uses SPI3 ???? To be checked
+VSPI not defined
+
+For ESP32/S2/C3:
+SPI1_HOST = 0
+SPI2_HOST = 1
+SPI3_HOST = 2
+*/
+
 // ESP32 specific SPI port selection
 #ifdef USE_HSPI_PORT
-  #define SPI_PORT HSPI
+  #ifdef CONFIG_IDF_TARGET_ESP32
+    #define SPI_PORT HSPI  //HSPI is port 2 on ESP32
+  #else
+    #define SPI_PORT 3     //HSPI is port 3 on ESP32 S2
+  #endif
 #else
-  #define SPI_PORT VSPI
+  #define SPI_PORT 2 //FSPI(ESP32 S2) or VSPI (ESP32)
 #endif
 
 #ifdef RPI_DISPLAY_TYPE

TFT_eSPI.h

@@ -16,7 +16,7 @@
 #ifndef _TFT_eSPIH_
 #define _TFT_eSPIH_
 
-#define TFT_ESPI_VERSION "2.3.73"
+#define TFT_ESPI_VERSION "2.3.80"
 
 // Bit level feature flags
 // Bit 0 set: viewport capability
@@ -317,15 +317,19 @@ int32_t esp;         // Processor code
 uint8_t trans;       // SPI transaction support
 uint8_t serial;      // Serial (SPI) or parallel
 uint8_t overlap;     // ESP8266 overlap mode
-
+/*
 #if defined (ESP32)  // TODO: make generic for other processors
   #if defined (USE_HSPI_PORT)
     uint8_t  port = HSPI;
   #else
+    #ifdef CONFIG_IDF_TARGET_ESP32
       uint8_t  port = VSPI;
+    #else
+      uint8_t  port = FSPI;
+    #endif
   #endif
 #endif
-
+*/
 uint16_t tft_driver; // Hexadecimal code
 uint16_t tft_width;  // Rotation 0 width and height
 uint16_t tft_height;

User_Setup_Select.h

@@ -81,6 +81,8 @@
 
 //#include <User_Setups/Setup60_RP2040_ILI9341.h>    // Setup file for Raspberry Pi Pico with SPI ILI9341
 
+//#include <User_Setups/Setup70_ESP32_S2_ILI9341.h>  // Setup file for ESP32 S2 with SPI ILI9341
+
 //#include <User_Setups/Setup135_ST7789.h>           // Setup file for ESP8266 and ST7789 135 x 240 TFT
 
 //#include <User_Setups/Setup136_LilyGo_TTV.h>       // Setup file for ESP32 and Lilygo TTV ST7789 SPI bus TFT  135x240

User_Setups/Setup70_ESP32_S2_ILI9341.h

+// Setup for the ESP32 S2 with ILI9341 display
+// Note SPI DMA with ESP32 S2 is not currently supported
+
+// See SetupX_Template.h for all options available
+#define ILI9341_DRIVER
+
+                    // Typical board default pins
+#define TFT_CS   10 //     10 or 34
+
+#define TFT_MOSI 11 //     11 or 35
+#define TFT_SCLK 12 //     12 or 36
+#define TFT_MISO 13 //     13 or 37
+
+#define TFT_DC   14
+#define TFT_RST  15
+
+#define LOAD_GLCD
+#define LOAD_FONT2
+#define LOAD_FONT4
+#define LOAD_FONT6
+#define LOAD_FONT7
+#define LOAD_FONT8
+#define LOAD_GFXFF
+
+#define SMOOTH_FONT
+
+// FSPI port will be used unless the following is defined
+#define USE_HSPI_PORT
+
+//#define SPI_FREQUENCY  27000000
+#define SPI_FREQUENCY  40000000   // Maximum for ILI9341
+
+#define SPI_READ_FREQUENCY  6000000 // 6 MHz is the maximum SPI read speed for the ST7789V

library.json

 {
   "name": "TFT_eSPI",
-  "version": "2.3.73",
+  "version": "2.3.80",
   "keywords": "Arduino, tft, ePaper, display, Pico, RP2040, STM32, ESP8266, NodeMCU, ESP32, M5Stack, ILI9341, ST7735, ILI9163, S6D02A1, ILI9481, ILI9486, ILI9488, ST7789, RM68140, SSD1351, SSD1963, ILI9225, HX8357D",
   "description": "A TFT and ePaper SPI graphics library with optimisation for Raspberry Pi Pico, ESP8266, ESP32 and STM32",
   "repository":

library.properties

 name=TFT_eSPI
-version=2.3.73
+version=2.3.80
 author=Bodmer
 maintainer=Bodmer
 sentence=TFT graphics library for Arduino processors with performance optimisation for RP2040, STM32, ESP8266 and ESP32