src/timer/nds/SDL_systimer.c
branchgsoc2008_nds
changeset 2696 0b395a60deff
parent 2683 e858ac8868b6
child 2698 e1da92da346c
equal deleted inserted replaced
2695:c04a266c277a 2696:0b395a60deff
    26 #include <nds.h>
    26 #include <nds.h>
    27 #include <nds/timers.h>
    27 #include <nds/timers.h>
    28 
    28 
    29 #include "SDL_timer.h"
    29 #include "SDL_timer.h"
    30 #include "../SDL_timer_c.h"
    30 #include "../SDL_timer_c.h"
       
    31 #include "../SDL_systimer.h"
    31 
    32 
       
    33 /* Data to handle a single periodic alarm */
       
    34 static int timer_alive = 0;
    32 static Uint32 timer_ticks;
    35 static Uint32 timer_ticks;
    33 
    36 
    34 void
    37 void
    35 SDL_StartTicks(void)
    38 SDL_StartTicks(void)
    36 {
    39 {
    55     while(timer_alive) {
    58     while(timer_alive) {
    56         if((SDL_GetTicks() - start) >= ms) break;
    59         if((SDL_GetTicks() - start) >= ms) break;
    57     }
    60     }
    58 }
    61 }
    59 
    62 
    60 /* Data to handle a single periodic alarm */
       
    61 static int timer_alive = 0;
       
    62 static int timer_ticks = 0;
       
    63 
       
    64 static int
    63 static int
    65 RunTimer(void *unused)
    64 RunTimer(void *unused)
    66 {
    65 {
    67     while (timer_alive) {
    66     while (timer_alive) {
    68         if (SDL_timer_running) {
    67         if (SDL_timer_running) {
    70         SDL_Delay(1);
    69         SDL_Delay(1);
    71     }
    70     }
    72     return (0);
    71     return (0);
    73 }
    72 }
    74 
    73 
    75 void NDS_TimerInterrupt() {
    74 void NDS_TimerInterrupt(void) {
    76     printf("timer irq\n");
    75 	timer_ticks++;
    77 }
    76 }
    78 
    77 
    79 /* This is only called if the event thread is not running */
    78 /* This is only called if the event thread is not running */
    80 int
    79 int
    81 SDL_SYS_TimerInit(void)
    80 SDL_SYS_TimerInit(void)
    82 {
    81 {
    83     timer_alive = 1;
    82     timer_alive = 1;
    84     timer_ticks = 0;
    83     timer_ticks = 0;
    85     TIMER_CR(0) = TIMER_DIV_1024 | TIMER_IRQ_REQ;
    84     TIMER_CR(3) = TIMER_DIV_1024 | TIMER_IRQ_REQ;
    86     TIMER_DATA(0) = TIMER_FREQ_1024(1000);
    85     TIMER_DATA(3) = TIMER_FREQ_1024(1000);
    87     irqSet(IRQ_TIMER1, NDS_TimerInterrupt);
    86     irqSet(IRQ_TIMER3, NDS_TimerInterrupt);
       
    87     irqEnable(IRQ_TIMER3);
    88     return 0;
    88     return 0;
    89 }
    89 }
    90 
    90 
    91 void
    91 void
    92 SDL_SYS_TimerQuit(void)
    92 SDL_SYS_TimerQuit(void)
    93 {
    93 {
    94     if (timer_alive) {
    94     if (timer_alive) {
    95         TIMER_CR(0) = 0;
    95         TIMER_CR(3) = 0;
    96     }
    96     }
    97     timer_alive = 0;
    97     timer_alive = 0;
       
    98     irqDisable(IRQ_TIMER3);
    98 }
    99 }
    99 
   100 
   100 int
   101 int
   101 SDL_SYS_StartTimer(void)
   102 SDL_SYS_StartTimer(void)
   102 {
   103 {
   103     TIMER_CR(0) |= TIMER_ENABLE;
   104     TIMER_CR(3) |= TIMER_ENABLE;
   104     return 0;
   105     return 0;
   105 }
   106 }
   106 
   107 
   107 void
   108 void
   108 SDL_SYS_StopTimer(void)
   109 SDL_SYS_StopTimer(void)
   109 {
   110 {
   110     TIMER_CR(0) &= ~TIMER_ENABLE;
   111     TIMER_CR(3) &= ~TIMER_ENABLE;
   111     return;
   112     return;
   112 }
   113 }
   113 
   114 
   114 
   115 
   115 #endif /* SDL_TIMER_NDS */
   116 #endif /* SDL_TIMER_NDS */