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74 lines
1.7 KiB
C++
74 lines
1.7 KiB
C++
/*
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Copyright (c) 2012 Arduino. All right reserved.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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.
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See the GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <Arduino.h>
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#include "Reset.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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__attribute__ ((long_call, section (".ramfunc")))
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void banzai() {
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// Disable all interrupts
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__disable_irq();
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// Set bootflag to run SAM-BA bootloader at restart
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const int EEFC_FCMD_CGPB = 0x0C;
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const int EEFC_KEY = 0x5A;
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while ((EFC0->EEFC_FSR & EEFC_FSR_FRDY) == 0);
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EFC0->EEFC_FCR =
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EEFC_FCR_FCMD(EEFC_FCMD_CGPB) |
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EEFC_FCR_FARG(1) |
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EEFC_FCR_FKEY(EEFC_KEY);
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while ((EFC0->EEFC_FSR & EEFC_FSR_FRDY) == 0);
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// From here flash memory is no more available.
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// BANZAIIIIIII!!!
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const int RSTC_KEY = 0xA5;
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RSTC->RSTC_CR =
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RSTC_CR_KEY(RSTC_KEY) |
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RSTC_CR_PROCRST |
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RSTC_CR_PERRST;
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while (true);
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}
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static int ticks = -1;
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void initiateReset(int _ticks) {
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ticks = _ticks;
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}
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void cancelReset() {
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ticks = -1;
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}
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void tickReset() {
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if (ticks == -1)
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return;
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ticks--;
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if (ticks == 0)
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banzai();
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}
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#ifdef __cplusplus
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}
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#endif
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