Problem to use LT24 module with qsys and quartus prime 16.1

Hi all!

I try to develope simple project with quartus prime 16.1 de-10 lite board and terasic lt24 module (university program), NIOS II and Qsys. I have already downloaded the example from lt24 terasic web page but there are mismatches into the files (in qsys a warning advise to update some IPs). Anyway, in qsys I add a lt24 controller and, according to documentation, a video pll (in order to provide correct clock to daughter board). The lt24 controller has a sink interface linked to a source interface of a video pixel buffer DMA (It has the same clock of LT24 controller IP). Generating HDL and synthesis works fine but the result is onlyh a withe LCD screen. This is the program:

int main()

{

printf("avvio il programma\n");

alt_up_pixel_buffer_dma_dev *buffer;

buffer = alt_up_pixel_buffer_dma_open_dev("/dev/video_pixel_buffer_dma_0");

alt_up_pixel_buffer_dma_clear_screen(buffer,0);

alt_up_pixel_buffer_dma_clear_screen(buffer,1);

alt_up_pixel_buffer_dma_draw_rectangle(buffer, 0, 0, 255, 255, 0x001F, 0);

alt_up_pixel_buffer_dma_draw_box(buffer,10,10,255,255,0x001F,1);

}

In the teraisc demo example there are same code and function to initializate the LCD and the LT24 controller but I don't have these code in my auto generated HAL files. Can anyone help me?

I had checked pin assignement in quartus and, of course, the daughter board works fine.

Thanks!