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[/] [xulalx25soc/] [trunk/] [sw/] [ttybus.h] - Rev 85
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//////////////////////////////////////////////////////////////////////////////// // // Filename: ttybus.h // // Project: XuLA2 board // // Purpose: This is the C++ program on the command side that will interact // with a UART on an FPGA, to command the WISHBONE on that same // FPGA to ... whatever we wish to command it to do. // // This code does not run on an FPGA, is not a test bench, neither // is it a simulator. It is a portion of a command program // for commanding an FPGA. // // This particular implementation is a complete rewrite of the // last implementation, adding compression into the interface that // wasn't there before. // // // Creator: Dan Gisselquist, Ph.D. // 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. // // License: GPL, v3, as defined and found on www.gnu.org, // http://www.gnu.org/licenses/gpl.html // // //////////////////////////////////////////////////////////////////////////////// // // // #ifndef TTYBUS_H #define TTYBUS_H #include "llcomms.h" #include "devbus.h" #define RDBUFLN 2048 class TTYBUS : public DEVBUS { public: unsigned long m_total_nread; private: LLCOMMSI *m_dev; static const unsigned MAXRDLEN, MAXWRLEN; bool m_interrupt_flag, m_decode_err, m_addr_set, m_bus_err; unsigned int m_lastaddr; int m_buflen, m_rdfirst, m_rdlast; char *m_buf, *m_rdbuf; bool m_wrloaded; int m_rdaddr, m_wraddr; BUSW m_readtbl[1024], m_writetbl[512]; void init(void) { m_interrupt_flag = false; m_buflen = 0; m_buf = NULL; m_addr_set = false; bufalloc(64); m_bus_err = false; m_decode_err = false; m_wrloaded = false; m_rdfirst = m_rdlast = 0; m_rdbuf = new char[RDBUFLN]; m_rdaddr = m_wraddr = 0; } char charenc(const int sixbitval) const; unsigned chardec(const char b) const; void encode(const int fbits, const BUSW v, char *buf) const; unsigned decodestr(const char *buf) const; int decodehex(const char hx) const; void bufalloc(int len); BUSW readword(void); // Reads a word value from the bus void readv(const BUSW a, const int inc, const int len, BUSW *buf); void writev(const BUSW a, const int p, const int len, const BUSW *buf); int lclread(char *buf, int len); int lclreadcode(char *buf, int len); char *encode_address(const BUSW a); char *readcmd(const int inc, const int len, char *buf); public: TTYBUS(LLCOMMSI *comms) : m_dev(comms) { init(); } virtual ~TTYBUS(void) { m_dev->close(); if (m_buf) delete[] m_buf; m_buf = NULL; delete m_rdbuf; m_rdbuf = NULL; delete m_dev; } void kill(void) { m_dev->close(); } void close(void) { m_dev->close(); } void writeio(const BUSW a, const BUSW v); BUSW readio(const BUSW a); void readi(const BUSW a, const int len, BUSW *buf); void readz(const BUSW a, const int len, BUSW *buf); void writei(const BUSW a, const int len, const BUSW *buf); void writez(const BUSW a, const int len, const BUSW *buf); bool poll(void) { return m_interrupt_flag; }; void usleep(unsigned msec); // Sleep until interrupt void wait(void); // Sleep until interrupt bool bus_err(void) const { return m_bus_err; }; void reset_err(void) { m_bus_err = false; } void clear(void) { m_interrupt_flag = false; } }; #endif
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