si.c
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/*---------------------------------------------------------------------*
Copyright (C) 1998 Nintendo.
$RCSfile: si.c,v $
$Revision: 1.1.1.1 $
$Date: 2002/05/02 03:27:33 $
*---------------------------------------------------------------------*/
/* pre-process */
#include "hglobals.h"
#include "hsi.h"
/* declarerations */
OSMesgQueue siMsgQ, siDmaMsgQ;
OSMesg siMsgBuf[SI_MSGQ_SIZE], siDmaMsgBuf[SI_DMAQ_SIZE];
static OSThread siThread;
static u64 siThreadStack[STACKSIZE/sizeof(u64)];
static void objectOfsi(void * );
static s32 si_readCont(void);
static s32 si_initCont(void);
static s32 si_interval;
static TContStat _contstat[MAXCONTROLLERS];
/* implmentations */
void
si_create(void)
{
osCreateMesgQueue(&siMsgQ, siMsgBuf, SI_MSGQ_SIZE);
osCreateMesgQueue(&siDmaMsgQ, siDmaMsgBuf, SI_DMAQ_SIZE);
osSetEventMesg(OS_EVENT_SI, &siDmaMsgQ, (OSMesg)1); /* SI */
si_initCont(); /* Initialize controllers */
osCreateThread(&siThread, ++g_thread_id,(void *)objectOfsi, 0
,siThreadStack + STACKSIZE/sizeof(u64), SI_THREAD_PRIORITY);
osStartThread(&siThread);
}
void
objectOfsi(void * arg)
{
arg = arg; /* no use */
while(1)
{
osRecvMesg(&siMsgQ, (OSMesg *)NULL, OS_MESG_BLOCK);
si_readCont();
}
}
void
si_ticker( void )
{
static s32 cnt=1;
if( cnt < 0 )
{
osSendMesg(&siMsgQ, (OSMesg)NULL, OS_MESG_BLOCK);
cnt = si_interval;
}
else
{
cnt--;
}
}
s32
si_readCont(void)
{
int i;
OSContPad contdata[MAXCONTROLLERS];
TContStat * p;
u16 bits,mask,trigmask;
u8 j;
osContStartReadData(&siDmaMsgQ); /* 関数内部 : DMA 要求後 SI_EVENT を待つ
（ブロックがかかってこの時点で読み取りは完了） */
osContGetReadData(contdata); /* RDRAM の内容を読むだけ */
for(i = 0 ; i < MAXCONTROLLERS ; i ++)
{
p = &_contstat[i];
if (!(contdata[i].errno & CONT_NO_RESPONSE_ERROR))
{
bits = contdata[i].button;
if( contdata[i].stick_x > SI_CONT_STICK_BORDER ) bits |= R_JPAD;
if( contdata[i].stick_y > SI_CONT_STICK_BORDER ) bits |= U_JPAD;
if( contdata[i].stick_x < - SI_CONT_STICK_BORDER ) bits |= L_JPAD;
if( contdata[i].stick_y < - SI_CONT_STICK_BORDER ) bits |= D_JPAD;
p->available = 1;
p->store = p->now;
p->now = bits;
p->trig = p->now & ~p->store;
trigmask=0;
mask=0;
for(j=0;j<16;j++)
{
bits = p->now & p->store; /* repeat bit */
mask = 1<<j;
if(bits & mask)
{
++p->repeat[j];
if ( (p->repeat[j] > 32) && (p->repeat[j] & 3) )
trigmask |= mask;
}
else
{
p->repeat[j]=0;
}
}
p->trig |= trigmask;
}
else
{
bzero(p,sizeof(TContStat));
}
}
return i;
}
s32
si_initCont(void)
{
int i,j=0;
u8 pattern;
OSContStatus stat[MAXCONTROLLERS];
TContStat * p;
osContInit(&siDmaMsgQ, &pattern, stat);
for (i = 0 ; i < MAXCONTROLLERS ; i ++)
{
p = &_contstat[i];
p->status = stat[i].status;
p->now = 0;
if ( ((pattern >> i) & 1) != 0 &&
((stat[i].type & CONT_TYPE_MASK) == CONT_TYPE_NORMAL)) {
p->available = 1;
j++;
} else {
p->available = 0;
}
}
si_interval = 0;
return j;
}
TContStat *
si_getCont(s32 contNo)
{
return &_contstat[contNo];
}
u16
si_getTrigger(s32 contNo)
{
u16 ret;
ret = _contstat[contNo].trig;
_contstat[contNo].trig = 0; /* trigger 呼出と同時にクリア */
return ret;
}
s32
si_setInterval(s32 i)
{
if (i<0) return 0;
si_interval = i;
return -1;
}