47 lines
1.3 KiB
C++
47 lines
1.3 KiB
C++
/*
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CoreMutex for the Raspberry Pi Pico RP2040
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Implements a deadlock-safe multicore mutex for sharing things like the
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USB or UARTs.
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Copyright (c) 2021 Earle F. Philhower, III <earlephilhower@yahoo.com>
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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. See the GNU
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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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#pragma once
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#include <pico/mutex.h>
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#include "_freertos.h"
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enum {
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DebugEnable = 1
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};
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class CoreMutex {
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public:
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CoreMutex(mutex_t *mutex, uint8_t option = DebugEnable);
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~CoreMutex();
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operator bool() {
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return _acquired;
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}
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private:
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mutex_t *_mutex;
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bool _acquired;
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uint8_t _option;
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BaseType_t _pxHigherPriorityTaskWoken;
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};
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