59 lines
1.1 KiB
C++
59 lines
1.1 KiB
C++
#ifndef FLASH_H
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#define FLASH_H
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#include <hardware/spi.h>
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namespace lib
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{
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class Flash
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{
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public:
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class Page
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{
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public:
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static constexpr size_t SIZE = 256;
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static constexpr size_t COUNT_PER_SECTOR = 4096 / SIZE;
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operator uint8_t*();
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operator const uint8_t*() const;
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uint8_t& operator[](int address);
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uint8_t operator[](int address) const;
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private:
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uint8_t buffer[SIZE];
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};
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Flash(uint8_t sck, uint8_t tx, uint8_t rx, uint8_t cs, int baudrate);
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void read_page(uint16_t page_index);
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void write_page(uint16_t page_index);
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void erase_sector(uint16_t page_index);
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Page& page();
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const Page& page() const;
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private:
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uint8_t sck, tx, rx, cs;
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spi_inst_t* spi;
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Page page_buffer;
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void write_enable();
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void wait_done();
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static constexpr uint8_t CMD_PAGE_PROGRAM = 0x02;
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static constexpr uint8_t CMD_READ = 0x03;
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static constexpr uint8_t CMD_STATUS = 0x05;
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static constexpr uint8_t CMD_WRITE_EN = 0x06;
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static constexpr uint8_t CMD_SECTOR_ERASE = 0x20;
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static constexpr uint8_t STATUS_BUSY_MASK = 0x01;
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};
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}
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#endif // FLASH_H
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