Change to external SDRAM, with lv_port_stm32f746

[epikao]

Ok, however, according to the following link, seems DMA2D does not really help much:

Enabling/Disabling DMA2D doesn't have any impact on the performance

Yes, I nearly realized your point when I was searching in the drawing source codes to find out what is going on, for example in the “lv_draw_blend.c” functions, DMA2D is not being used most of the times, the general format is something like this: /*Simple fill (maybe with opacity), no masking*/ if(mask_res == LV_DRAW_MASK_RES_FULL_COVER) { /* DMA2D being used here */ } /*Masked*/ else { /* DMA2D never being used here */ } and I realized that the application …