PVSnesLib  4.3.0
Documentation to code in C or ASM for the Nintendo SNES
timer/timer.c
/*---------------------------------------------------------------------------------
Simple timer demo
-- alekmaul
---------------------------------------------------------------------------------*/
#include <snes.h>
extern char snesfont, snespal;
//---------------------------------------------------------------------------------
int main(void)
{
// Initialize SNES
// Initialize text console with our font
consoleInitText(0, 16 * 2, &snesfont, &snespal);
// Draw a wonderful text :P
consoleDrawText(9, 8, "JUST COUNT VBL");
// Init background
bgSetGfxPtr(0, 0x2000);
bgSetMapPtr(0, 0x6800, SC_32x32);
// Now Put in 16 color mode and disable Bgs except current
setMode(BG_MODE1, 0);
// Wait for nothing :P
while (1)
{
consoleDrawText(10, 10, "COUNTER=%u", snes_vblank_count);
}
return 0;
}
void bgSetGfxPtr(u8 bgNumber, u16 address)
Definition of each background address.
void bgSetDisable(u8 bgNumber)
Disable a BG in the actual SNES mode.
void bgSetMapPtr(u8 bgNumber, u16 address, u8 mapSize)
Change Background Map address.
void consoleSetTextVramAdr(u16 vramfont)
Change text graphics address (4K aligned)
void consoleInitText(u8 palnum, u8 palsize, u8 *tilfont, u8 *palfont)
Initialize the Text System.
u16 snes_vblank_count
Number of VBL since consoleInit called (16 bits longs so reset each 18 minutes in NTSC)
void consoleInit(void)
Initialize console.
void consoleDrawText(u16 x, u16 y, char *fmt,...)
Output formatted string on a screen (tiles mode)
void consoleSetTextOffset(u16 offsetfont)
Change text Background map address for display (must be BG address)
void consoleSetTextVramBGAdr(u16 offsetfont)
Change text Background map address for display (must be BG address)
void WaitForVBlank(void)
Wait for vblank interrupt
the master include file for snes applications.
void setScreenOn(void)
Put screen On.
void setMode(u8 mode, u8 size)
Set the SNES hardware to operate in new display mode.