Dear all, I'm using ST7789.c in combination with lvgl-lib.
The bottleneck to the display is the SPI communication. But even if I increase the SPI frequency to 24MHz, it does not get faster. This is because of constant delay between the bytes. I guessed that this can be improved using DMA. But that does not seem to work out of the box. In the SPI TX callback the result of the DMA transfer is -4. The transfer is not executed. Can anybody give me a hint on what to do? Best regards, Simon -- Hard- and Softwaredevelopment Consultant Ingenieurbüro-Filgis USt-IdNr.: DE305343278
