SPI crashes on lilygo T-embed-s3

[ricdijk]

I don't know if this is the right place to enter the issue and maybe I am doing something wrong myself.

Since espressif32@6.7.0 a call to tft.init() (from the bodmer/TFT_eSPI library latest version as of today) crashes for the lilygo T-embed-s3:

Guru Meditation Error: Core  1 panic'ed (StoreProhibited). Exception was unhandled.

Core  1 register dump:
PC      : 0x4200a2f5  PS      : 0x00060a30  A0      : 0x8200a50c  A1      : 0x3fcebe30  
A2      : 0x00000010  A3      : 0x00000000  A4      : 0x60004000  A5      : 0x0000000b  
A6      : 0x000000ff  A7      : 0x00000001  A8      : 0x08000000  A9      : 0x3fcebe00  
A10     : 0x3fca3bb0  A11     : 0x00000001  A12     : 0xffffffff  A13     : 0x00000200  
A14     : 0x00000000  A15     : 0x3fc9ab1c  SAR     : 0x00000010  EXCCAUSE: 0x0000001d  
EXCVADDR: 0x00000010  LBEG    : 0x4209d498  LEND    : 0x4209d4fc  LCOUNT  : 0x00000000  

Backtrace: 0x4200a2f2:0x3fcebe30 0x4200a509:0x3fcebe60 0x42007e52:0x3fcebe80 0x42006510:0x3fcebeb0 0x4202628a:0x3fcebf20

I traced back the issue and found the board crashes on: SET_BUS_WRITE_MODE; (TFT_eSPI/Processors/TFT_eSPI_ESP32_S3.c)

Traceback of SET_BUS_WRITE_MODE;:
1: #define SET_BUS_WRITE_MODE *_spi_user = SPI_USR_MOSI (TFT_eSPI/Processors/TFT_eSPI_ESP32_S3.h)
2: #define _spi_user (volatile uint32_t*)(SPI_USER_REG(SPI_PORT))
3: #define SPI_USER_REG(i) (REG_SPI_BASE(i) + 0x10)
4: #define REG_SPI_BASE(i) (((i)>=2) ? (DR_REG_SPI2_BASE + (i-2) * 0x1000) : (0)) // GPSPI2 and GPSPI3 (.platformio/packages/framework-arduinoespressif32/tools/sdk/esp32s3/include/soc/esp32s3/include/soc/soc.h:122 (included from sensor.h))

Since the board defines SPI_PORT=0, _spi_user is assigned a NULL pointer and the board crashes when trying to assign a value to the pointer.

In 6.6.0 the definition is: #define REG_SPI_BASE(i) (((i)>1) ? (DR_REG_SPI3_BASE) : (DR_REG_SPI2_BASE)), no NULL pointer and works fine

I solved the issue by using the flag -D USE_HSPI_PORT => this sets SPI_PORT=3 and the sketch runs fine.
However the definition or REG_SPI_BASE(i) seems wrong of the board should not use SPI_PORT=0. Maybe someone with more knowledge can can look int this (or point me to where I m wrong).

Maybe I was supposed to set this or another environment variable myself, however It would be nice if a warning or error was raises.

[Jason2866]

For sure the issue is wrong placed in this github. The issue is known. espressif/arduino-esp32#10115
Best would be if it is fixed in the place where it is wrong -> IDF
A fix could be done in the bodmer/TFT_eSPI too

[valeros]

Thanks @Jason2866 for the clarification.
Closing as the issue has nothing to do with PlatformIO.