Homebrew Write to framebuffer help

[aliak11]

Can someone give an example, or explain how to write to the framebuffer to display on the top LCD. The addresses are here http://3dbrew.org/wiki/LCD.

 

[FAST6191]

Have you tried a proof of concept using the REG_LCDCOLORFILL* registers?

 

[ernilos]

Registers won't work on ARM9
Just satart searching in FCRAM...

 

[T3GZdev]

it was his destiny to know

 

[escherbach]

Maybe something like


int fbfd = 0;
// Open the framebuffer for reading and writing
fbfd = open("/dev/fb0", O_RDWR);
if (!fbfd) {
printf("Error: cannot open framebuffer device.\n");
exit(1);
}
// Map the framebuffer to memory
unsigned int * fbp = (unsigned int *)mmap(0, XRES*YRES*4, PROT_READ | PROT_WRITE, MAP_SHARED, fbfd, 0);

then fbp is a pointer to the framebuffer memory

EDIT: or just set fbfd to the physical address?