84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
/* Reflow Oven Controller
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*
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* Copyright (C) 2020 Mario Hüttel <mario.huettel@gmx.net>
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*
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* This file is part of the Reflow Oven Controller Project.
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*
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* The reflow oven controller 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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* The Reflow Oven Control Firmware 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 the reflow oven controller project.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <reflow-controller/oven-driver.h>
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#include <reflow-controller/digio.h>
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#include <reflow-controller/safety/fault.h>
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#include <reflow-controller/safety/safety-memory.h>
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#include <helper-macros/helper-macros.h>
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/**
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* @brief Handler for hard faults.
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*
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* This hard fault handler will turn of the oven output and go to panic mode.
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* @note Depending on the fault condition some of the things done here could fail.
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*/
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void HardFault_Handler(void)
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{
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/* This is a non recoverable fault. Stop the oven */
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oven_driver_set_power(0);
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oven_driver_apply_power_level();
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/* Set the error led */
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led_set(0, 1);
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/* Try the real panic mode */
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panic_mode();
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}
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/* Overwrite default handler. Go to panic mode */
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/**
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* @brief Default interrupt handler. This will trigger a panic.
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* @note This function should never be called during normal operation.
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*/
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void __int_default_handler(void)
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{
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panic_mode();
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}
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/**
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* @brief Put the device into panic mode.
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*
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* This function can be used when a irrecoverable error is encountered.
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* The function will:
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* - Disable the oven output
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* - Set the panic flag in the safety memory
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* - Hang and wait for the watchdog to trigger a system reset.
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*
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* The panic state will be entered after the reset due to the set panic flag in the safety memory
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*/
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void panic_mode(void)
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{
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/* This variable is static, because I don't want it to be on the stack */
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static struct safety_memory_boot_status IN_SECTION(.ccm.bss) boot_status;
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oven_driver_set_power(0);
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oven_driver_apply_power_level();
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if (!safety_memory_get_boot_status(&boot_status)) {
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boot_status.reset_from_panic = 0xFFFFFFFF;
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(void)safety_memory_set_boot_status(&boot_status);
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}
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/* Let the watchdog do the rest */
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while (1)
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;
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}
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