mirror of https://github.com/g4klx/MMDVM.git
73 lines
1.7 KiB
C++
73 lines
1.7 KiB
C++
/*
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Serial fifo control - Copyright (C) KI6ZUM 2015
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Copyright (C) 2015,2016,2020 by Jonathan Naylor G4KLX
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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 Library General Public
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License as published by the Free Software Foundation; either
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version 2 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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the
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Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#if !defined(FMRB_H)
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#define FMRB_H
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#if defined(STM32F4XX)
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#include "stm32f4xx.h"
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#elif defined(STM32F7XX)
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#include "stm32f7xx.h"
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#elif defined(STM32F105xC)
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#include "stm32f1xx.h"
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#include <cstddef>
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#else
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#include <Arduino.h>
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#endif
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#if defined(__SAM3X8E__) || defined(STM32F105xC)
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#define ARM_MATH_CM3
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#elif defined(STM32F7XX)
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#define ARM_MATH_CM7
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#elif defined(STM32F4XX) || defined(__MK20DX256__) || defined(__MK64FX512__) || defined(__MK66FX1M0__)
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#define ARM_MATH_CM4
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#else
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#error "Unknown processor type"
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#endif
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#include <arm_math.h>
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class CFMRB {
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public:
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CFMRB(uint16_t length);
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uint16_t getSpace() const;
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uint16_t getData() const;
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bool put(q15_t sample);
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bool get(q15_t& sample);
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bool hasOverflowed();
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void reset();
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private:
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uint16_t m_length;
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volatile q15_t* m_samples;
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volatile uint16_t m_head;
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volatile uint16_t m_tail;
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volatile bool m_full;
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bool m_overflow;
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};
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#endif
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