2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2009 Sam Lantinga
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "SDL_config.h"
24 #include "SDL_thread.h"
25 #include "SDL_timer.h"
26 #include "SDL_error.h"
27 #include "../SDL_timer_c.h"
31 #define timers2ms(tlow,thigh)(tlow | (thigh<<16)) >> 5
34 void SDL_StartTicks(void)
38 TIMER0_CR=TIMER_ENABLE|TIMER_DIV_1024;
39 TIMER1_CR=TIMER_ENABLE|TIMER_CASCADE;
42 Uint32 SDL_GetTicks(void)
44 return timers2ms(TIMER0_DATA, TIMER1_DATA);
47 void SDL_Delay(Uint32 ms)
50 now=timers2ms(TIMER0_DATA, TIMER1_DATA);
51 while((Uint32)timers2ms(TIMER0_DATA, TIMER1_DATA)<now+ms);
55 /* This is only called if the event thread is not running */
56 int SDL_SYS_TimerInit(void)
61 void SDL_SYS_TimerQuit(void)
65 int SDL_SYS_StartTimer(void)
67 SDL_SetError("Timers not implemented on NDS");
71 void SDL_SYS_StopTimer(void)