How to display many tiles on the screen

[zoran]

Hi All



I have connected Gameduino 2 display to stm32f407 discovery board.

I am able to write text and bitmaps on the display, but I experience issue when trying to add more than 3 bitmaps at the time.

After some try and error it seems that I need to add some delay between each of the commands in the command list, otherwise nothing would

be displayed.



My plan is to try to make video game, and I am thinking on creating the background picture by using some tiles.



I have used EVE Asset Builder tool to convert 16x16.png file to an array and thereafter I have included array in my program and uploaded it to GRAM.

SPI connection on the discovery board is configured to 8MHz.



Bellow is example of the program which I have shortened in this case, but in reality I am sending many more BITMAP_SOURCE and VERTEX2F commands:

My impression is following, the more BITMAP_SOURCE and VERTEX2F commands I include in DrawBitmap3() function, the more delay I need to add in between.



Probably there is some other way to do this but I have not understand it yet.



I have attached 2 pictures. One is the tilemap which is converted to an array and another is how my display looks so far.



I hope that somebody might have some good suggestions on how this could be done.



Thanks in advance.


void DrawBitmap3()

{

API_LIB_WriteDataRAMG(Tiles16x67, 34304, 0);

delay3();



cmd(CMD_DLSTART);







cmd(BITMAP_HANDLE(0));

cmd(BITMAP_SOURCE(0));

cmd(BITMAP_LAYOUT(ARGB1555, 32, 16));

cmd(BITMAP_SIZE(NEAREST, BORDER, BORDER, 16,1072));



cmd(CLEAR_COLOR_RGB(0,0,0));

cmd(CLEAR(1,1,1));



cmd(BEGIN(BITMAPS));



cmd(BITMAP_SOURCE(14336));

cmd(VERTEX2F(0, 0));



cmd(BITMAP_SOURCE(14848));

cmd(VERTEX2F(256, 0));



delay3();

cmd(BITMAP_SOURCE(15360));

cmd(VERTEX2F(512, 0));



delay3();

cmd(BITMAP_SOURCE(15872));

cmd(VERTEX2F(0, 256));



delay3();

cmd(BITMAP_SOURCE(16384));

cmd(VERTEX2F(256, 256));



delay3();

cmd(BITMAP_SOURCE(16896));

cmd(VERTEX2F(512, 256));



delay3();

cmd(BITMAP_SOURCE(17408));

cmd(VERTEX2F(0, 512));



.

.

.

.



delay3();

delay3();

cmd(BITMAP_SOURCE(15360));

cmd(VERTEX2F(3840, 3328));



delay3();

delay3();

cmd(BITMAP_SOURCE(17408));

cmd(VERTEX2F(3584, 3584));



.

.

.

delay3();

delay3();

delay3();

cmd(BITMAP_SOURCE(17920));

cmd(VERTEX2F(4352, 3840));



delay3();

delay3();

delay3();

cmd(BITMAP_SOURCE(18432));

cmd(VERTEX2F(4608, 3840));



cmd(END());







cmd(DISPLAY());

cmd(CMD_SWAP);



}