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[/] [qspiflash/] [trunk/] [bench/] [cpp/] [qspiflashsim.h] - Rev 8
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/////////////////////////////////////////////////////////////////////////// // // Filename: spiflashsim.h // // Project: Wishbone Controlled Quad SPI Flash Controller // // Purpose: This library simulates the operation of a Quad-SPI commanded // flash, such as the S25FL032P used on the Basys-3 development // board by Digilent. As such, it is defined by 32 Mbits of // memory (4 Mbyte). // // Creator: Dan Gisselquist // Gisselquist Technology, LLC // /////////////////////////////////////////////////////////////////////////// // // Copyright (C) 2015, Gisselquist Technology, LLC // // This program is free software (firmware): you can redistribute it and/or // modify it under the terms of the GNU General Public License as published // by the Free Software Foundation, either version 3 of the License, or (at // your option) any later version. // // This program is distributed in the hope that it will be useful, but WITHOUT // ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License along // with this program. (It's in the $(ROOT)/doc directory, run make with no // target there if the PDF file isn't present.) If not, see // <http://www.gnu.org/licenses/> for a copy. // // License: GPL, v3, as defined and found on www.gnu.org, // http://www.gnu.org/licenses/gpl.html // // /////////////////////////////////////////////////////////////////////////// #ifndef QSPIFLASHSIM_H #define QSPIFLASHSIM_H #define QSPIF_WIP_FLAG 0x0001 #define QSPIF_WEL_FLAG 0x0002 #define QSPIF_DEEP_POWER_DOWN_FLAG 0x0200 class QSPIFLASHSIM { typedef enum { QSPIF_IDLE, QSPIF_QUAD_READ_IDLE, QSPIF_RDSR, QSPIF_RDCR, QSPIF_WRSR, QSPIF_CLSR, QSPIF_RDID, QSPIF_RELEASE, QSPIF_FAST_READ, QSPIF_QUAD_READ_CMD, QSPIF_QUAD_READ, QSPIF_SECTOR_ERASE, QSPIF_PP, QSPIF_QPP, QSPIF_BULK_ERASE, QSPIF_DEEP_POWER_DOWN, QSPIF_INVALID } QSPIF_STATE; QSPIF_STATE m_state; char *m_mem, *m_pmem; int m_last_sck; unsigned m_write_count, m_ireg, m_oreg, m_sreg, m_addr, m_count, m_config, m_mode_byte, m_creg; bool m_quad_mode, m_debug; public: QSPIFLASHSIM(void); void load(const char *fname); void debug(const bool dbg) { m_debug = dbg; } bool debug(void) const { return m_debug; } int operator()(const int csn, const int sck, const int dat); }; #endif
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