From 5912faf7d30784945acd8a8e07027a633ce3094b Mon Sep 17 00:00:00 2001 From: Ian C Date: Wed, 22 Nov 2006 14:45:26 +0000 Subject: Split into ARM7/ARM9 for Wifi use -- initial (non-working) Wifi initialisation. Keyboard and pointer seems more stable. --- arm7/source/main.c | 285 +++++++++++++++++++++++++++-------------------------- 1 file changed, 143 insertions(+), 142 deletions(-) (limited to 'arm7/source/main.c') diff --git a/arm7/source/main.c b/arm7/source/main.c index 34aef8f..6579ad2 100644 --- a/arm7/source/main.c +++ b/arm7/source/main.c @@ -1,17 +1,27 @@ -/*--------------------------------------------------------------------------------- - $Id$ +/* + ds81 - Nintendo DS ZX81 emulator. + + Copyright (C) 2006 Ian Cowburn + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + $Id$ + + This file is largely based on the libnds examples. +*/ - Simple ARM7 stub (sends RTC, TSC, and X/Y data to the ARM 9) - - $Log$ - Revision 1.2 2005/09/07 20:06:06 wntrmute - updated for latest libnds changes - - Revision 1.8 2005/08/03 05:13:16 wntrmute - corrected sound code - - ----------------------------------------------------------------------------------*/ #include #include @@ -20,159 +30,150 @@ #include +#include "ds81_ipc.h" -//--------------------------------------------------------------------------------- -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; -} +static void FIFO_Handler(u32 msg); -//--------------------------------------------------------------------------------- -void VblankHandler(void) { -//--------------------------------------------------------------------------------- - static int heartbeat = 0; +static void VblankHandler(void) +{ + static int heartbeat = 0; - uint16 but=0, x=0, y=0, xpx=0, ypx=0, z1=0, z2=0, batt=0, aux=0; - int t1=0, t2=0; - uint32 temp=0; - uint8 ct[sizeof(IPC->curtime)]; - u32 i; + uint16 but=0, x=0, y=0, xpx=0, ypx=0, z1=0, z2=0, batt=0, aux=0; + int t1=0, t2=0; + uint32 temp=0; + uint8 ct[sizeof(IPC->curtime)]; + u32 i; - // Update the heartbeat - heartbeat++; + /* Update the heartbeat */ + heartbeat++; - // Read the touch screen + /* Read the touch screen */ + but = REG_KEYXY; - but = REG_KEYXY; + if (!(but & (1<<6))) + { + touchPosition tempPos = touchReadXY(); - if (!(but & (1<<6))) { + x = tempPos.x; + y = tempPos.y; + xpx = tempPos.px; + ypx = tempPos.py; + } - touchPosition tempPos = touchReadXY(); - - x = tempPos.x; - y = tempPos.y; - xpx = tempPos.px; - ypx = tempPos.py; - } + z1 = touchRead(TSC_MEASURE_Z1); + z2 = touchRead(TSC_MEASURE_Z2); - z1 = touchRead(TSC_MEASURE_Z1); - z2 = touchRead(TSC_MEASURE_Z2); - - - batt = touchRead(TSC_MEASURE_BATTERY); - aux = touchRead(TSC_MEASURE_AUX); - - // Read the time - rtcGetTime((uint8 *)ct); - BCDToInteger((uint8 *)&(ct[1]), 7); - - // Read the temperature - temp = touchReadTemperature(&t1, &t2); - - // Update the IPC struct - IPC->heartbeat = heartbeat; - IPC->buttons = but; - IPC->touchX = x; - IPC->touchY = y; - IPC->touchXpx = xpx; - IPC->touchYpx = ypx; - IPC->touchZ1 = z1; - IPC->touchZ2 = z2; - IPC->battery = batt; - IPC->aux = aux; - - for(i=0; icurtime[i] = ct[i]; - } + batt = touchRead(TSC_MEASURE_BATTERY); + aux = touchRead(TSC_MEASURE_AUX); - IPC->temperature = temp; - IPC->tdiode1 = t1; - IPC->tdiode2 = t2; + /* Read the time */ + rtcGetTime((uint8 *)ct); + BCDToInteger((uint8 *)&(ct[1]), 7); + /* Read the temperature */ + temp = touchReadTemperature(&t1, &t2); - //sound code :) - TransferSound *snd = IPC->soundData; - IPC->soundData = 0; + /* Update the IPC struct */ + IPC->mailBusy = 1; - if (0 != snd) { + IPC->heartbeat = heartbeat; + IPC->buttons = but; + IPC->touchX = x; + IPC->touchY = y; + IPC->touchXpx = xpx; + IPC->touchYpx = ypx; + IPC->touchZ1 = z1; + IPC->touchZ2 = z2; + IPC->battery = batt; + IPC->aux = aux; - for (i=0; icount; i++) { - s32 chan = getFreeSoundChannel(); + for(i=0; icurtime[i] = ct[i]; + } - 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); - } - } - } + IPC->temperature = temp; + IPC->tdiode1 = t1; + IPC->tdiode2 = t2; - Wifi_Update(); // update wireless in vblank + IPC->mailBusy = 0; + Wifi_Update(); } -// callback to allow wifi library to notify arm9 -void arm7_synctoarm9() { // send fifo message - REG_IPC_FIFO_TX = 0x87654321; +/* callback to allow wifi library to notify arm9 +*/ +static void ARM7_SyncToARM9(void) +{ + REG_IPC_FIFO_TX = DS81_WIFI_SYNC_IPC; } -// 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(); + +/* interrupt handler to allow incoming notifications from arm9 +*/ +static void ARM7_Fifo(void) +{ + while(!(REG_IPC_FIFO_CR & IPC_FIFO_RECV_EMPTY)) + { + u32 msg; + + msg = REG_IPC_FIFO_RX; + FIFO_Handler(msg); + } } -//--------------------------------------------------------------------------------- -int main(int argc, char ** argv) { -//--------------------------------------------------------------------------------- - REG_IPC_FIFO_CR = IPC_FIFO_ENABLE | IPC_FIFO_SEND_CLEAR; // enable & prepare fifo asap - // Reset the clock if needed - rtcReset(); - - //enable sound - powerON(POWER_SOUND); - SOUND_CR = SOUND_ENABLE | SOUND_VOL(0x7F); - IPC->soundData = 0; - - irqInit(); - irqSet(IRQ_VBLANK, VblankHandler); - irqEnable(IRQ_VBLANK); - - irqSet(IRQ_WIFI, Wifi_Interrupt); // set up wifi interrupt +/* Handler for FIFO messages +*/ +static void FIFO_Handler(u32 msg) +{ + static int next_is_wifi=0; + + if (next_is_wifi) + { + next_is_wifi = 0; + Wifi_Init(msg); + Wifi_SetSyncHandler(ARM7_SyncToARM9); + + irqSet(IRQ_WIFI, Wifi_Interrupt); irqEnable(IRQ_WIFI); + } + else + { + switch(msg) + { + case DS81_WIFI_INIT_IPC: + next_is_wifi = 1; + break; + + case DS81_WIFI_SYNC_IPC: + Wifi_Sync(); + break; + } + } +} + +int main(int argc, char ** argv) +{ + /* enable & prepare fifo asap */ + REG_IPC_FIFO_CR = IPC_FIFO_ENABLE | IPC_FIFO_SEND_CLEAR; + + IPC->mailBusy = 1; + + /* Reset the clock if needed */ + rtcReset(); + + irqInit(); + irqSet(IRQ_VBLANK, VblankHandler); + irqEnable(IRQ_VBLANK); + + 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; -{ // 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; // give next value to wifi_init - 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 - } // arm7 wifi init complete - - // Keep the ARM7 out of main RAM - while (1) swiWaitForVBlank(); + while (1) + { + swiWaitForVBlank(); + } } -- cgit v1.2.3