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TouchGFX: Stuck in assert function of getBlockForTransfer(Rect& rect)

Sandro_K
Associate III

Hello,

I have an STM32F777 with FreeRTOS and TouchGFX. An ST7789V2 display is controlled via SPI with a partial framebuffer. After a certain time the TouchGFX task gets stuck in the function “getBlockForTransfer(Rect& rect)” in the line “assert(state[sendingBlock] == DRAWN);”(File: FrameBufferAllocator.hpp).
Has anyone ever had something like this? How can I isolate the error why this happens?

The screenshot shows the point where the task hangs.

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