/*---------------------------------------------------------------------------------
default ARM7 core
Copyright (C) 2005
Michael Noland (joat)
Jason Rogers (dovoto)
Dave Murphy (WinterMute)
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any
damages arising from the use of this software.
Permission is granted to anyone to use this software for any
purpose, including commercial applications, and to alter it and
redistribute it freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you
must not claim that you wrote the original software. If you use
this software in a product, an acknowledgment in the product
documentation would be appreciated but is not required.
2. Altered source versions must be plainly marked as such, and
must not be misrepresented as being the original software.
3. This notice may not be removed or altered from any source
distribution.
---------------------------------------------------------------------------------*/
#include <nds.h>
#include "../include/my_ipc.h"
#ifdef ENABLE_WIFI
#include <dswifi7.h>
#endif
//---------------------------------------------------------------------------------
void startSound(int sampleRate, const void* data, u32 bytes, u8 channel, u8 vol, u8 pan, u8 format) {
//---------------------------------------------------------------------------------
SCHANNEL_TIMER(channel) = SOUND_FREQ(sampleRate);
SCHANNEL_SOURCE(channel) = (u32)data;
SCHANNEL_LENGTH(channel) = bytes >> 2 ;
SCHANNEL_CR(channel) = SCHANNEL_ENABLE | SOUND_ONE_SHOT | SOUND_VOL(vol) | SOUND_PAN(pan) | (format==1?SOUND_8BIT:SOUND_16BIT);
}
//---------------------------------------------------------------------------------
s32 getFreeSoundChannel() {
//---------------------------------------------------------------------------------
int i;
for (i=0; i<16; i++) {
if ( (SCHANNEL_CR(i) & SCHANNEL_ENABLE) == 0 ) return i;
}
return -1;
}
touchPosition first,tempPos;
//---------------------------------------------------------------------------------
void VcountHandler() {
//---------------------------------------------------------------------------------
static int lastbut = -1;
uint16 but=0, x=0, y=0, xpx=0, ypx=0, z1=0, z2=0;
but = REG_KEYXY;
if (!( (but ^ lastbut) & (1<<6))) {
tempPos = touchReadXY();
if ( tempPos.x == 0 || tempPos.y == 0 ) {
but |= (1 <<6);
lastbut = but;
} else {
x = tempPos.x;
y = tempPos.y;
xpx = tempPos.px;
ypx = tempPos.py;
z1 = tempPos.z1;
z2 = tempPos.z2;
}
} else {
lastbut = but;
but |= (1 <<6);
}
IPC->touchX = x;
IPC->touchY = y;
IPC->touchXpx = xpx;
IPC->touchYpx = ypx;
IPC->touchZ1 = z1;
IPC->touchZ2 = z2;
IPC->buttons = but;
}
//---------------------------------------------------------------------------------
void VblankHandler(void) {
//---------------------------------------------------------------------------------
static u8 is_recording = 0;
u32 i;
//sound code :)
TransferSound *snd = IPC->soundData;
IPC->soundData = 0;
if (0 != snd) {
for (i=0; i<snd->count; i++) {
s32 chan = getFreeSoundChannel();
if (chan >= 0) {
startSound(snd->data[i].rate, snd->data[i].data, snd->data[i].len, chan, snd->data[i].vol, snd->data[i].pan, snd->data[i].format);
}
}
}
// microphone code
if (!is_recording && my_IPC->record)
{
StartRecording((u8 *)my_IPC->record_buffer, my_IPC->record_length_max);
is_recording = 1;
}
if (is_recording && !my_IPC->record)
{
my_IPC->recorded_length = 1 + StopRecording();
is_recording = 0;
}
#ifdef ENABLE_WIFI
Wifi_Update(); // update wireless in vblank
#endif
}
#ifdef ENABLE_WIFI
// callback to allow wifi library to notify arm9
void arm7_synctoarm9() { // send fifo message
REG_IPC_FIFO_TX = 0x87654321;
}
// interrupt handler to allow incoming notifications from arm9
void arm7_fifo() { // check incoming fifo messages
u32 msg = REG_IPC_FIFO_RX;
if(msg==0x87654321) Wifi_Sync();
}
#endif
//---------------------------------------------------------------------------------
int main(int argc, char ** argv) {
//---------------------------------------------------------------------------------
#ifdef ENABLE_WIFI
REG_IPC_FIFO_CR = IPC_FIFO_ENABLE | IPC_FIFO_SEND_CLEAR; // enable & prepare
// fifo asap
#endif
// read User Settings from firmware
readUserSettings();
//enable sound
powerON(POWER_SOUND);
writePowerManagement(PM_CONTROL_REG, ( readPowerManagement(PM_CONTROL_REG) & ~PM_SOUND_MUTE ) | PM_SOUND_AMP );
SOUND_CR = SOUND_ENABLE | SOUND_VOL(0x7F);
irqInit();
// Start the RTC tracking IRQ
initClockIRQ();
SetYtrigger(80);
irqSet(IRQ_VCOUNT, VcountHandler);
irqSet(IRQ_VBLANK, VblankHandler);
irqSet(IRQ_TIMER0, ProcessMicrophoneTimerIRQ);
irqEnable(IRQ_VBLANK | IRQ_VCOUNT | IRQ_TIMER0);
#ifdef ENABLE_WIFI
irqSet(IRQ_WIFI, Wifi_Interrupt); // set up wifi interrupt
irqEnable(IRQ_WIFI);
// sync with arm9 and init wifi
u32 fifo_temp;
while (1)
{ // wait for magic number
while (REG_IPC_FIFO_CR & IPC_FIFO_RECV_EMPTY)
swiWaitForVBlank();
fifo_temp = REG_IPC_FIFO_RX;
if (fifo_temp == 0x12345678)
break;
}
while (REG_IPC_FIFO_CR & IPC_FIFO_RECV_EMPTY)
swiWaitForVBlank();
fifo_temp = REG_IPC_FIFO_RX;
Wifi_Init(fifo_temp);
irqSet(IRQ_FIFO_NOT_EMPTY,arm7_fifo); // set up fifo irq
irqEnable(IRQ_FIFO_NOT_EMPTY);
REG_IPC_FIFO_CR = IPC_FIFO_ENABLE | IPC_FIFO_RECV_IRQ;
Wifi_SetSyncHandler(arm7_synctoarm9); // allow wifi lib to notify arm9
#endif
// Keep the ARM7 mostly idle
while (1) {
swiWaitForVBlank();
}
}
