mirror of
https://github.com/suloku/savegame-manager.git
synced 2026-03-23 10:57:57 -05:00
88 lines
2.0 KiB
C++
88 lines
2.0 KiB
C++
/*
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* savegame_manager: a tool to backup and restore savegames from Nintendo
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* DS cartridges. Nintendo DS and all derivative names are trademarks
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* by Nintendo. EZFlash 3-in-1 is a trademark by EZFlash.
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*
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* auxspi.cpp: A thin reimplementation of the AUXSPI protocol
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* (low level functions)
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*
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* Copyright (C) Pokedoc (2010)
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <nds.h>
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extern int ir_delay;
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inline void auxspi_wait_busy()
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{
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while (REG_AUXSPICNT & 0x80);
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}
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inline void auxspi_open(uint8 device)
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{
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REG_AUXSPICNT = 0xa040 | (device & 3);
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auxspi_wait_busy();
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}
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inline void auxspi_close()
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{
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REG_AUXSPIDATA = 0;
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auxspi_wait_busy();
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REG_AUXSPICNT = 0;
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auxspi_wait_busy();
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}
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inline void auxspi_close_lite()
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{
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REG_AUXSPICNT = 0x40;
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auxspi_wait_busy();
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}
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inline uint8 auxspi_transfer(uint8 out)
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{
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REG_AUXSPIDATA = out;
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auxspi_wait_busy();
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return REG_AUXSPIDATA;
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}
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inline void auxspi_write(uint8 out)
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{
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auxspi_transfer(out);
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}
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inline uint8 auxspi_read()
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{
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return auxspi_transfer(0);
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}
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inline uint16 auxspi_read_16()
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{
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REG_AUXSPIDATA = 0;
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auxspi_wait_busy();
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return REG_AUXSPIDATA;
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}
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inline void auxspi_disable_infrared_core()
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{
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auxspi_open(0);
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swiDelay(ir_delay);
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auxspi_open(2);
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auxspi_write(0);
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swiDelay(ir_delay);
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}
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