57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
// Copyright (C) 2025 Thies Lennart Alff
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (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, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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// USA
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#pragma once
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#include <sam.h>
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#include <stdbool.h>
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#ifndef NULL
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#define NULL ((void*)0)
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#endif
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#ifdef DEBUG
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#include "SEGGER_RTT.h"
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#define DEBUG_PRINT(...) SEGGER_RTT_printf(0, "DEBUG: " __VA_ARGS__)
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#else
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#define DEBUG_PRINT(...) do {} while(0)
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#endif
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static volatile uint32_t critical_section_counter = 0;
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static volatile bool critical_section_previous_state = false;
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static inline void interrupts_enable() {
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__DMB();
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__enable_irq();
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}
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static inline void interrupts_disable() {
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__disable_irq();
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__DMB();
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}
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static inline bool interrupts_are_enabled() {
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return __get_PRIMASK() == 0;
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}
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static inline uint32_t interrupts_save() {
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volatile uint32_t flags = interrupts_are_enabled();
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interrupts_disable();
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return flags;
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}
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void enter_critical();
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void leave_ciritical();
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