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[/] [xulalx25soc/] [trunk/] [bench/] [cpp/] [sdspisim.h] - Rev 117
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//////////////////////////////////////////////////////////////////////////////// // // Filename: sdspisim.h // // Project: Wishbone Controlled SD-Card Controller over SPI port // // Purpose: This library simulates the operation of a SPI commanded SD-Card, // such as might be found on a XuLA2-LX25 board made by xess.com. // // This simulator is for testing use in a Verilator/C++ environment, where // it would be used in place of the actual hardware. // // Creator: Dan Gisselquist, Ph.D. // Gisselquist Technology, LLC // //////////////////////////////////////////////////////////////////////////////// // // Copyright (C) 2015-2016, 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 SDSPISIM_H #define SDSPISIM_H typedef enum eRESET_STATES { SDSPI_POWERUP_RESET, SDSPI_CMD0_IDLE, SDSPI_RCVD_CMD8, SDSPI_RCVD_ACMD41, SDSPI_RESET_COMPLETE, SDSPI_IN_OPERATION } RESET_STATES; #define SDSPI_RSPLEN 8 #define SDSPI_MAXBLKLEN (1+2048+2) #define SDSPI_CSDLEN (16) #define SDSPI_CIDLEN (16) class SDSPISIM { FILE *m_dev; unsigned long m_devblocks; int m_last_sck, m_delay, m_mosi; bool m_busy, m_debug, m_block_address, m_altcmd_flag, m_syncd, m_host_supports_high_capacity, m_reading_data, m_have_token; RESET_STATES m_reset_state; int m_cmdidx, m_bitpos, m_rspidx, m_rspdly, m_blkdly, m_blklen, m_blkidx, m_last_miso, m_powerup_busy, m_rxloc; char m_cmdbuf[8], m_dat_out, m_dat_in; char m_rspbuf[SDSPI_RSPLEN]; char m_block_buf[SDSPI_MAXBLKLEN]; char m_csd[SDSPI_CSDLEN], m_cid[SDSPI_CIDLEN]; public: SDSPISIM(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); unsigned cmdcrc(int ln, char *buf) const; bool check_cmdcrc(char *buf) const; unsigned blockcrc(int ln, char *buf) const; void add_block_crc(int ln, char *buf) const; }; #endif
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