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/**
* File: voicecontread2.c
*/
#include "ultra64.h"
#include "PR/controller_voice.h"
#include "PR/voiceinternal.h"
#include "PR/controller.h"
#include "macros.h"
#define READ2FORMAT(ptr) ((__OSVoiceRead2Format*)(ptr))
s32 __osVoiceContRead2(OSMesgQueue* mq, s32 channel, u16 address, u8 dst[2]) {
s32 errorCode;
u8 status;
u8* ptr;
s32 retryCount = 2;
s32 i;
__osSiGetAccess();
do {
ptr = (u8*)&__osPfsPifRam.ramarray;
if ((__osContLastPoll != CONT_CMD_READ2_VOICE) || (channel != __osPfsLastChannel)) {
__osContLastPoll = CONT_CMD_READ2_VOICE;
__osPfsLastChannel = channel;
for (i = 0; i < channel; i++, *ptr++ = 0) {}
__osPfsPifRam.status = CONT_CMD_EXE;
READ2FORMAT(ptr)->dummy = CONT_CMD_NOP;
READ2FORMAT(ptr)->txsize = CONT_CMD_READ2_VOICE_TX;
READ2FORMAT(ptr)->rxsize = CONT_CMD_READ2_VOICE_RX;
READ2FORMAT(ptr)->cmd = CONT_CMD_READ2_VOICE;
READ2FORMAT(ptr)->datacrc = 0xFF;
ptr[sizeof(__OSVoiceRead2Format)] = CONT_CMD_END;
} else {
ptr += channel;
}
READ2FORMAT(ptr)->addrh = address >> 3;
READ2FORMAT(ptr)->addrl = (address << 5) | __osContAddressCrc(address);
__osSiRawStartDma(OS_WRITE, &__osPfsPifRam);
osRecvMesg(mq, NULL, OS_MESG_BLOCK);
__osSiRawStartDma(OS_READ, &__osPfsPifRam);
osRecvMesg(mq, NULL, OS_MESG_BLOCK);
errorCode = CHNL_ERR(*READ2FORMAT(ptr));
if (errorCode == 0) {
if (__osVoiceContDataCrc(READ2FORMAT(ptr)->data, ARRAY_COUNT(READ2FORMAT(ptr)->data)) !=
READ2FORMAT(ptr)->datacrc) {
errorCode = __osVoiceGetStatus(mq, channel, &status);
if (errorCode != 0) {
break;
}
errorCode = CONT_ERR_CONTRFAIL;
} else {
bcopy(READ2FORMAT(ptr)->data, dst, ARRAY_COUNT(READ2FORMAT(ptr)->data));
}
} else {
errorCode = CONT_ERR_NO_CONTROLLER;
}
} while ((errorCode == CONT_ERR_CONTRFAIL) && (retryCount-- >= 0));
__osSiRelAccess();
return errorCode;
}
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