InfiniTime.git

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#pragma once
#include <cstddef>

namespace Pinetime {
  namespace Drivers {
    class Spi;
    class SpiNorFlash {
      public:
        explicit SpiNorFlash(Spi& spi);
        SpiNorFlash(const SpiNorFlash&) = delete;
        SpiNorFlash& operator=(const SpiNorFlash&) = delete;
        SpiNorFlash(SpiNorFlash&&) = delete;
        SpiNorFlash& operator=(SpiNorFlash&&) = delete;

        typedef struct __attribute__((packed)) {
          uint8_t manufacturer = 0;
          uint8_t type = 0;
          uint8_t density = 0;
        } Identification;

        Identification ReadIdentificaion();
        uint8_t ReadStatusRegister();
        bool WriteInProgress();
        bool WriteEnabled();
        uint8_t ReadConfigurationRegister();
        void Read(uint32_t address, uint8_t* buffer, size_t size);
        void Write(uint32_t address, const uint8_t *buffer, size_t size);
        void WriteEnable();
        void SectorErase(uint32_t sectorAddress);
        uint8_t ReadSecurityRegister();
        bool ProgramFailed();
        bool EraseFailed();


        void Init();
        void Uninit();


        void Sleep();
        void Wakeup();
      private:
        enum class Commands : uint8_t {
            PageProgram = 0x02,
            Read = 0x03,
            ReadStatusRegister = 0x05,
            WriteEnable = 0x06,
            ReadConfigurationRegister = 0x15,
            SectorErase = 0x20,
            ReadSecurityRegister = 0x2B,
            ReadIdentification = 0x9F,
            ReleaseFromDeepPowerDown = 0xAB,
            DeepPowerDown = 0xB9
        };
        static constexpr uint16_t pageSize = 256;

        Spi& spi;
        Identification device_id;
    };
  }
}