Mercurial > sdl-ios-xcode
comparison 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> |
---|---|
date | Mon, 25 Jun 2007 00:50:20 +0000 |
parents | |
children | a1b03ba2fcd0 |
comparison
equal
deleted
inserted
replaced
3975:e85e65aec22f | 3976:8582c6a5ca16 |
---|---|
1 /* | |
2 SDL - Simple DirectMedia Layer | |
3 Copyright (C) 1997-2006 Sam Lantinga | |
4 | |
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. | |
9 | |
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. | |
14 | |
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 | |
18 | |
19 Sam Lantinga | |
20 slouken@libsdl.org | |
21 */ | |
22 #include "SDL_config.h" | |
23 | |
24 #include "SDL_thread.h" | |
25 #include "SDL_timer.h" | |
26 #include "SDL_error.h" | |
27 #include "../SDL_timer_c.h" | |
28 | |
29 #include <nds.h> | |
30 | |
31 #define timers2ms(tlow,thigh)(tlow | (thigh<<16)) >> 5 | |
32 | |
33 | |
34 void SDL_StartTicks(void) | |
35 { | |
36 TIMER0_DATA=0; | |
37 TIMER1_DATA=0; | |
38 TIMER0_CR=TIMER_ENABLE|TIMER_DIV_1024; | |
39 TIMER1_CR=TIMER_ENABLE|TIMER_CASCADE; | |
40 } | |
41 | |
42 Uint32 SDL_GetTicks(void) | |
43 { | |
44 return timers2ms(TIMER0_DATA, TIMER1_DATA); | |
45 } | |
46 | |
47 void SDL_Delay(Uint32 ms) | |
48 { | |
49 Uint32 now; | |
50 now=timers2ms(TIMER0_DATA, TIMER1_DATA); | |
51 while((Uint32)timers2ms(TIMER0_DATA, TIMER1_DATA)<now+ms); | |
52 | |
53 } | |
54 | |
55 /* This is only called if the event thread is not running */ | |
56 int SDL_SYS_TimerInit(void) | |
57 { | |
58 return 0; | |
59 } | |
60 | |
61 void SDL_SYS_TimerQuit(void) | |
62 { | |
63 } | |
64 | |
65 int SDL_SYS_StartTimer(void) | |
66 { | |
67 SDL_SetError("Timers not implemented on NDS"); | |
68 return -1; | |
69 } | |
70 | |
71 void SDL_SYS_StopTimer(void) | |
72 { | |
73 } |