82 lines
1.9 KiB
C++
82 lines
1.9 KiB
C++
/*
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* Copyright (C) EdgeTX
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*
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* Based on code named
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* opentx - https://github.com/opentx/opentx
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* th9x - http://code.google.com/p/th9x
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* er9x - http://code.google.com/p/er9x
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* gruvin9x - http://code.google.com/p/gruvin9x
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*
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* License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
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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 version 2 as
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* published by the Free Software Foundation.
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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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#include "hal/abnormal_reboot.h"
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#include "stm32_hal_ll.h"
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#define __REBOOT_DATA __attribute__((section(".rebootdata"), aligned(4)))
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// This variable is define at a fixed memory location
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// and is used in bootloader and firmware to pass
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// commands across reboot.
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uint32_t _reboot_cmd __REBOOT_DATA;
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constexpr uint32_t _SOFTRESET_REQUEST = 0xCAFEDEAD;
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constexpr uint32_t _SHUTDOWN_REQUEST = 0xDEADBEEF;
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constexpr uint32_t _REBOOT_CAUSE_DEFAULT = 0xFFFFFFFF;
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static uint32_t _reboot_cause = _REBOOT_CAUSE_DEFAULT;
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#if defined(DEBUG)
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uint32_t _dbg_csr = 0xFFFFFFFF;
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#endif
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void _init_reboot_cause()
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{
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if (_reboot_cause != _REBOOT_CAUSE_DEFAULT) return;
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#if defined(DEBUG)
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_dbg_csr = LL_RCC_ReadReg(CSR);
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#endif
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if (LL_RCC_IsActiveFlag_IWDGRST()) {
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_reboot_cause = ARC_Watchdog;
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} else if (LL_RCC_IsActiveFlag_SFTRST()) {
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_reboot_cause = ARC_Software;
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} else {
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_reboot_cause = ARC_None;
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}
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#if !defined(BOOT)
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LL_RCC_ClearResetFlags();
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#endif
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}
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void abnormalRebootEnableDetection()
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{
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_init_reboot_cause();
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_reboot_cmd = 0;
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}
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void abnormalRebootRequestSoftReset()
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{
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_reboot_cmd = _SOFTRESET_REQUEST;
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}
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uint32_t abnormalRebootGetCause()
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{
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_init_reboot_cause();
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return _reboot_cause;
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}
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