arm9/lib/NitroSDK/src/OS_valarm.c


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#include "OS_valarm.h"
#include "function_target.h"
#include "OS_interrupt.h"

static struct OSiVAlarmQueue
{
    OSVAlarm *head;
    OSVAlarm *tail;
} OSi_VAlarmQueue;

static u16 OSi_UseVAlarm = FALSE;

static s32 OSi_VFrameCount;
static s32 OSi_PreviousVCount;

ARM_FUNC void OS_InitVAlarm(void)
{
    if (!OSi_UseVAlarm)
    {
        OSi_UseVAlarm = TRUE;

        OSi_VAlarmQueue.head = NULL;
        OSi_VAlarmQueue.tail = NULL;

        (void)OS_DisableIrqMask(OS_IE_V_COUNT);

        OSi_VFrameCount = 0;
        OSi_PreviousVCount = 0;
    }
}