Mercurial > sdl-ios-xcode
diff src/timer/nds/SDL_systimer.c @ 3976:8582c6a5ca16 SDL-1.2
Added initial support for Nintendo DS, based on the work by Troy Davis (GPF)
author | Sam Lantinga <slouken@libsdl.org> |
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date | Mon, 25 Jun 2007 00:50:20 +0000 |
parents | |
children | a1b03ba2fcd0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/timer/nds/SDL_systimer.c Mon Jun 25 00:50:20 2007 +0000 @@ -0,0 +1,73 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2006 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Sam Lantinga + slouken@libsdl.org +*/ +#include "SDL_config.h" + +#include "SDL_thread.h" +#include "SDL_timer.h" +#include "SDL_error.h" +#include "../SDL_timer_c.h" + +#include <nds.h> + +#define timers2ms(tlow,thigh)(tlow | (thigh<<16)) >> 5 + + +void SDL_StartTicks(void) +{ + TIMER0_DATA=0; + TIMER1_DATA=0; + TIMER0_CR=TIMER_ENABLE|TIMER_DIV_1024; + TIMER1_CR=TIMER_ENABLE|TIMER_CASCADE; +} + +Uint32 SDL_GetTicks(void) +{ + return timers2ms(TIMER0_DATA, TIMER1_DATA); +} + +void SDL_Delay(Uint32 ms) +{ + Uint32 now; + now=timers2ms(TIMER0_DATA, TIMER1_DATA); + while((Uint32)timers2ms(TIMER0_DATA, TIMER1_DATA)<now+ms); + +} + +/* This is only called if the event thread is not running */ +int SDL_SYS_TimerInit(void) +{ + return 0; +} + +void SDL_SYS_TimerQuit(void) +{ +} + +int SDL_SYS_StartTimer(void) +{ + SDL_SetError("Timers not implemented on NDS"); + return -1; +} + +void SDL_SYS_StopTimer(void) +{ +}