VSPI error at compilation

andbro1965 · March 19, 2025, 10:26pm

I have this error with an ESP32 with touchscreen

SPIClass touchscreenSPI = SPIClass(VSPI);
XPT2046_Touchscreen touchscreen(XPT2046_CS, XPT2046_IRQ);

exit status 1

Compilation error: 'VSPI' was not declared in this scope

gfvalvo · March 20, 2025, 1:07am

Why don't you just use the SPI object that is already declared for you in the Arduino core? That will have instantiated the SPIClass object on the proper interface for the particular ESP32 board you're using (and didn't both to tell us which one).

embeddedkiddie · March 20, 2025, 2:08am

True. See this:

github.com/espressif/arduino-esp32

cores/esp32/esp32-hal-spi.h

master


      
          #ifdef CONFIG_IDF_TARGET_ESP32S2
          #define FSPI 1  //SPI 1 bus. ESP32S2: for external memory only (can use the same data lines but different SS)
          #define HSPI 2  //SPI 2 bus. ESP32S2: external memory or device  - it can be matrixed to any pins
          #define SPI2 2  // Another name for ESP32S2 SPI 2
          #define SPI3 3  //SPI 3 bus. ESP32S2: device only - it can be matrixed to any pins
          #elif CONFIG_IDF_TARGET_ESP32
          #define FSPI 1  //SPI 1 bus attached to the flash (can use the same data lines but different SS)
          #define HSPI 2  //SPI 2 bus normally mapped to pins 12 - 15, but can be matrixed to any pins
          #define VSPI 3  //SPI 3 bus normally attached to pins 5, 18, 19 and 23, but can be matrixed to any pins
          #else
          #define FSPI 0
          #define HSPI 1
          #endif

and also:

github.com/espressif/arduino-esp32

libraries/SPI/src/SPI.cpp

master


      
          #if CONFIG_IDF_TARGET_ESP32
          SPIClass SPI(VSPI);
          #else
          SPIClass SPI(FSPI);
          #endif

Topic		Replies	Views
ESP32-WROOM SPI pins clarification needed General Discussion	4	100	May 28, 2026
ESP Dev Module mit XPT2026 und XPT2026_Tochscreen.h Deutsch	18	188	January 23, 2026
Global SPIClass instance crashes Freenove WROVER 3rd Party Boards	6	99	September 18, 2025
ProfessorBoots ESP32 compiling error Uploading	10	231	January 22, 2026
Lin BUS on ESP32 errors compiling General Discussion	3	112	February 16, 2026

VSPI error at compilation

Related topics