| /* |
| SDL - Simple DirectMedia Layer |
| Copyright (C) 1997-2012 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) |
| { |
| } |