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50 lines
1.8 KiB
50 lines
1.8 KiB
/**
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* @file QSPIFlash.h
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Ha Thach and Dean Miller for Adafruit Industries LLC
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* Derived from Adafruit_SPIFlash class with no SdFat references
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*/
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#pragma once
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#include <Adafruit_SPIFlashBase.h>
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// This class extends Adafruit_SPIFlashBase by adding caching support.
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//
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// This class will use 4096 Bytes of RAM as a block cache.
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class QSPIFlash {
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public:
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static void begin();
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static size_t size();
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static uint8_t readByte(const uint32_t address);
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static void writeByte(const uint32_t address, const uint8_t v);
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static void flush();
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private:
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static Adafruit_SPIFlashBase * _flashBase;
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static uint8_t _buf[SFLASH_SECTOR_SIZE];
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static uint32_t _addr;
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};
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extern QSPIFlash qspi;
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