Add ESP32 C3 support

Tested with Stamp C3

Processors/TFT_eSPI_ESP32.c

@@ -142,7 +142,6 @@ void TFT_eSPI::busDir(uint32_t mask, uint8_t mode)
   pinMode(TFT_D5, mode);
   pinMode(TFT_D6, mode);
   pinMode(TFT_D7, mode);
-  return;
 }
 
 /***************************************************************************************

Processors/TFT_eSPI_ESP32_C3.c

@@ -144,7 +144,6 @@ void TFT_eSPI::busDir(uint32_t mask, uint8_t mode)
   pinMode(TFT_D5, mode);
   pinMode(TFT_D6, mode);
   pinMode(TFT_D7, mode);
-  return;
 }
 
 /***************************************************************************************

Processors/TFT_eSPI_ESP32_C3.h

@@ -2,6 +2,8 @@
         // TFT_eSPI driver functions for ESP32 processors //
         ////////////////////////////////////////////////////
 
+// Temporarily a separate file to TFT_eSPI_ESP32.h until board package low level API stabilises
+
 #ifndef _TFT_eSPI_ESP32H_
 #define _TFT_eSPI_ESP32H_
 
@@ -22,15 +24,11 @@
   #define VSPI FSPI
 #endif
 
-
-
-
 // Fix IDF problems with ESP32C3
 #if CONFIG_IDF_TARGET_ESP32C3
   // Fix ESP32C3 IDF bug for missing definition (VSPI/FSPI only tested at the moment)
   #ifndef REG_SPI_BASE
-    //Will this work as per S3? #define REG_SPI_BASE(i)     (((i)>1) ? (DR_REG_SPI3_BASE) : (DR_REG_SPI2_BASE))
-    #define REG_SPI_BASE(i)     (DR_REG_SPI1_BASE + (((i)>1) ? (((i)* 0x1000) + 0x20000) : (((~(i)) & 1)* 0x1000 )))
+    #define REG_SPI_BASE(i) DR_REG_SPI2_BASE
   #endif
 
   // Fix ESP32C3 IDF bug for name change
@@ -53,12 +51,12 @@ VSPI = 3, uses SPI3
 ESP32-S2:
 FSPI = 1, uses SPI2
 HSPI = 2, uses SPI3
-VSPI not defined
+VSPI not defined so have made VSPI = HSPI
 
-ESP32 C3:
-FSPI = 0, uses SPI2 ???? To be checked
-HSPI = 1, uses SPI3 ???? To be checked
-VSPI not defined
+ESP32 C3: Only 1 SPI port available
+FSPI = 1, uses SPI2
+HSPI = 1, uses SPI2
+VSPI not defined so have made VSPI = HSPI
 
 For ESP32/S2/C3:
 SPI1_HOST = 0
@@ -66,24 +64,8 @@ SPI2_HOST = 1
 SPI3_HOST = 2
 */
 
-// ESP32 specific SPI port selection
-#ifdef USE_HSPI_PORT
-  #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
-#elif defined(USE_FSPI_PORT)
-    #define SPI_PORT 2 //FSPI(ESP32 S2)
-#else
-  #ifdef CONFIG_IDF_TARGET_ESP32
-    #define SPI_PORT VSPI
-  #elif CONFIG_IDF_TARGET_ESP32S2
-    #define SPI_PORT 2 //FSPI(ESP32 S2)
-  #elif CONFIG_IDF_TARGET_ESP32C3
-    #define SPI_PORT FSPI
-  #endif
-#endif
+// ESP32 specific SPI port selection - only SPI2_HOST available on C3
+#define SPI_PORT SPI2_HOST
 
 #ifdef RPI_DISPLAY_TYPE
   #define CMD_BITS (16-1)
@@ -568,13 +550,13 @@ SPI3_HOST = 2
     #define tft_Write_16N(C) *_spi_mosi_dlen = 16-1;    \
                            *_spi_w = ((C)<<8 | (C)>>8); \
                            *_spi_cmd = SPI_USR;
-#else
+  #else
     #define tft_Write_16N(C) *_spi_mosi_dlen = 16-1;    \
                            *_spi_w = ((C)<<8 | (C)>>8); \
                            *_spi_cmd = SPI_UPDATE;      \
                     while (*_spi_cmd & SPI_UPDATE);     \
                            *_spi_cmd = SPI_USR;
-#endif
+  #endif
 
   // Write 16 bits
   #define tft_Write_16S(C) TFT_WRITE_BITS(C, 16)

Processors/TFT_eSPI_ESP32_S3.c

@@ -144,7 +144,6 @@ void TFT_eSPI::busDir(uint32_t mask, uint8_t mode)
   pinMode(TFT_D5, mode);
   pinMode(TFT_D6, mode);
   pinMode(TFT_D7, mode);
-  return;
 }
 
 /***************************************************************************************

TFT_eSPI.h

@@ -16,7 +16,7 @@
 #ifndef _TFT_eSPIH_
 #define _TFT_eSPIH_
 
-#define TFT_ESPI_VERSION "2.4.60"
+#define TFT_ESPI_VERSION "2.4.61"
 
 // Bit level feature flags
 // Bit 0 set: viewport capability

User_Setup_Select.h

@@ -83,7 +83,9 @@
 //#include <User_Setups/Setup61_RP2040_ILI9341_PIO_SPI.h>    // Setup file for RP2040 with PIO SPI ILI9341
 //#include <User_Setups/Setup62_RP2040_Nano_Connect_ILI9341.h>    // Setup file for RP2040 with SPI ILI9341
 
-//#include <User_Setups/Setup70_ESP32_S2_ILI9341.h>  // Setup file for ESP32 S2 with SPI ILI9341
+//#include <User_Setups/Setup70_ESP32_S2_ILI9341.h>   // Setup file for ESP32 S2 with SPI ILI9341
+//#include <User_Setups/Setup70b_ESP32_S3_ILI9341.h>  // Setup file for ESP32 S3 with SPI ILI9341
+//#include <User_Setups/Setup70c_ESP32_C3_ILI9341.h>  // Setup file for ESP32 C3 with SPI ILI9341
 
 //#include <User_Setups/Setup71_ESP32_S2_ST7789.h>       // Setup file for ESP32 S2 with ST7789
 //#include <User_Setups/Setup72_ESP32_ST7789_172x320.h>  // Setup file for ESP32 with ST7789 1.47" 172x320

User_Setups/Setup70c_ESP32_C3_ILI9341.h

+// Setup for the ESP32 C3 with ILI9341 display
+// Note SPI DMA with ESP32 C3 is not currently supported
+
+#define USER_SETUP_ID 70
+// See SetupX_Template.h for all options available
+
+#define ILI9341_DRIVER
+//#define ST7796_DRIVER
+//#define ILI9488_DRIVER
+
+// Adafruit qtpy default
+//TFT_CS 6
+//TFT_MOSI 7
+//TFT_MISO 8
+//TFT_SCLK 10
+
+// Lolin C3 mini default
+//TFT_CS 5
+//TFT_MOSI 4
+//TFT_MISO 3
+//TFT_SCLK 2
+
+//ESP32 C3 generic default
+//TFT_CS 7
+//TFT_MOSI 6
+//TFT_MISO 5
+//TFT_SCLK 4
+
+
+#define TFT_CS   7
+
+#define TFT_MOSI 6
+#define TFT_MISO 5
+#define TFT_SCLK 4
+
+#define TFT_DC    8
+#define TFT_RST   10
+
+//#define TOUCH_CS  1 // Optional for touch screen
+
+#define LOAD_GLCD
+#define LOAD_FONT2
+#define LOAD_FONT4
+#define LOAD_FONT6
+#define LOAD_FONT7
+#define LOAD_FONT8
+#define LOAD_GFXFF
+
+#define SMOOTH_FONT
+
+//#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
+
+#define SPI_TOUCH_FREQUENCY 2500000

library.json

 {
   "name": "TFT_eSPI",
-  "version": "2.4.60",
+  "version": "2.4.61",
   "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=2.4.60
+version=2.4.61
 author=Bodmer
 maintainer=Bodmer
 sentence=TFT graphics library for Arduino processors with performance optimisation for RP2040, STM32, ESP8266 and ESP32