Question
STM32L452 TouchGFX and SD Card
Hello,
I am using a custom board with the STM32L452RET. On this board:
- SPI1 is connected to an IIS3DWB accelerometer,
- SPI2 is connected to a 240x280 TFT display with an ST7789 controller and TouchGFX,
- SPI3 is used with FatFs to access an SD card, following this tutorial: https://controllerstech.com/sd-card-using-spi-in-stm32/,
- USB CDC is used for communication.
My issue is that if I compile a file containing the FatFs functions (regardless of whether I use the SD card access functions or not), the numerical values that should be displayed on the screen appear incorrectly (see attached images). However, if I exclude the FatFs functions from compilation, the display shows the values correctly.
I’ve tried several solutions:
- Compiling everything but not mounting the SD card,
- Modifying the initialization sequence of peripherals,
- Reducing the clock speed for SPI2 and SPI3.
Unfortunately, none of these attempts worked.
I am using CubeIDE version 1.16.1.
I appreciate any help you can provide.
Thank you!