2020-02-21 21:22:01 +01:00
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/* 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/stack-check.h>
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2020-02-21 23:01:04 +01:00
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#include <stdint.h>
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extern char _estack;
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extern char heap_top;
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int32_t stack_check_get_usage()
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{
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uint32_t stack_top;
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uint32_t stack_ptr;
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stack_ptr = read_stack_pointer();
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stack_top = (uint32_t)&_estack;
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return stack_top - stack_ptr;
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}
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int32_t stack_check_get_free()
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{
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uint32_t upper_heap_boundary;
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uint32_t stack_ptr;
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stack_ptr = read_stack_pointer();
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upper_heap_boundary = (uint32_t)&heap_top;
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return stack_ptr - upper_heap_boundary;
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}
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