157 lines
4.1 KiB
C
157 lines
4.1 KiB
C
/*
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* This file is part of Luma3DS
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* Copyright (C) 2016-2020 Aurora Wright, TuxSH
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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 3 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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* Additional Terms 7.b and 7.c of GPLv3 apply to this file:
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* * Requiring preservation of specified reasonable legal notices or
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* author attributions in that material or in the Appropriate Legal
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* Notices displayed by works containing it.
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* * Prohibiting misrepresentation of the origin of that material,
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* or requiring that modified versions of such material be marked in
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* reasonable ways as different from the original version.
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*/
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/*
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* waitInput function based on code by d0k3 https://github.com/d0k3/Decrypt9WIP/blob/master/source/hid.c
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*/
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#include "utils.h"
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#include "i2c.h"
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#include "buttons.h"
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#include "screen.h"
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#include "draw.h"
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#include "cache.h"
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#include "fmt.h"
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#include "memory.h"
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#include "fs.h"
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static void startChrono(void)
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{
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static bool isChronoStarted = false;
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if(isChronoStarted) return;
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REG_TIMER_CNT(0) = 0; //67MHz
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for(u32 i = 1; i < 4; i++) REG_TIMER_CNT(i) = 4; //Count-up
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for(u32 i = 0; i < 4; i++) REG_TIMER_VAL(i) = 0;
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REG_TIMER_CNT(0) = 0x80; //67MHz; enabled
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for(u32 i = 1; i < 4; i++) REG_TIMER_CNT(i) = 0x84; //Count-up; enabled
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isChronoStarted = true;
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}
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static u64 chrono(void)
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{
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u64 res = 0;
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for(u32 i = 0; i < 4; i++) res |= REG_TIMER_VAL(i) << (16 * i);
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res /= (TICKS_PER_SEC / 1000);
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return res;
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}
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u32 waitInput(bool isMenu)
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{
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static u64 dPadDelay = 0ULL;
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u64 initialValue = 0ULL;
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u32 key,
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oldKey = HID_PAD;
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bool shouldShellShutdown = bootType != B9SNTR && bootType != NTR;
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if(isMenu)
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{
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dPadDelay = dPadDelay > 0ULL ? 87ULL : 143ULL;
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startChrono();
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initialValue = chrono();
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}
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while(true)
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{
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key = HID_PAD;
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if(!key)
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{
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if(shouldShellShutdown)
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{
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u8 shellState = I2C_readReg(I2C_DEV_MCU, 0xF);
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wait(5);
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if(!(shellState & 2)) mcuPowerOff();
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}
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u8 intStatus = I2C_readReg(I2C_DEV_MCU, 0x10);
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wait(5);
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if(intStatus & 1) mcuPowerOff(); //Power button pressed
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oldKey = 0;
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dPadDelay = 0;
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continue;
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}
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if(key == oldKey && (!isMenu || (!(key & DPAD_BUTTONS) || chrono() - initialValue < dPadDelay))) continue;
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//Make sure the key is pressed
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u32 i;
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for(i = 0; i < 0x13000 && key == HID_PAD; i++);
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if(i == 0x13000) break;
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}
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return key;
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}
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void mcuPowerOff(void)
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{
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if(!needToSetupScreens) clearScreens(false);
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//Shutdown LCD
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if(ARESCREENSINITIALIZED) I2C_writeReg(I2C_DEV_MCU, 0x22, 1 << 0);
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//Ensure that all memory transfers have completed and that the data cache has been flushed
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flushEntireDCache();
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I2C_writeReg(I2C_DEV_MCU, 0x20, 1 << 0);
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while(true);
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}
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void wait(u64 amount)
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{
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startChrono();
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u64 initialValue = chrono();
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while(chrono() - initialValue < amount);
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}
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void error(const char *fmt, ...)
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{
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char buf[DRAW_MAX_FORMATTED_STRING_SIZE + 1];
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va_list args;
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va_start(args, fmt);
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vsprintf(buf, fmt, args);
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va_end(args);
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initScreens();
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drawString(true, 10, 10, COLOR_RED, "An error has occurred:");
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u32 posY = drawString(true, 10, 30, COLOR_WHITE, buf);
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drawString(true, 10, posY + 2 * SPACING_Y, COLOR_WHITE, "Press any button to shutdown");
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waitInput(false);
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mcuPowerOff();
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}
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