Hardware Design: SIE
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| 1 | /* JTAG low level functions and base class for cables |
| 2 | |
| 3 | Copyright (C) 2004 Andrew Rogers |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 2 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the Free Software |
| 17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ |
| 18 | |
| 19 | |
| 20 | |
| 21 | |
| 22 | #ifndef IOBASE_H |
| 23 | #define IOBASE_H |
| 24 | |
| 25 | class IOBase |
| 26 | { |
| 27 | public: |
| 28 | enum tapState_t{ |
| 29 | TEST_LOGIC_RESET=0, |
| 30 | RUN_TEST_IDLE=1, |
| 31 | SELECT_DR_SCAN=2, |
| 32 | CAPTURE_DR=3, |
| 33 | SHIFT_DR=4, |
| 34 | EXIT1_DR=5, |
| 35 | PAUSE_DR=6, |
| 36 | EXIT2_DR=7, |
| 37 | UPDATE_DR=8, |
| 38 | SELECT_IR_SCAN=9, |
| 39 | CAPTURE_IR=10, |
| 40 | SHIFT_IR=11, |
| 41 | EXIT1_IR=12, |
| 42 | PAUSE_IR=13, |
| 43 | EXIT2_IR=14, |
| 44 | UPDATE_IR=15, |
| 45 | UNKNOWN=999 |
| 46 | }; |
| 47 | protected: |
| 48 | tapState_t current_state; |
| 49 | virtual bool txrx(bool tms, bool tdi){} |
| 50 | virtual void tx(bool tms, bool tdi){} |
| 51 | int nextTapState(bool tms); |
| 52 | public: |
| 53 | IOBase(); |
| 54 | virtual int shiftTDITDO(const unsigned char *tdi, unsigned char *tdo, int length, bool last=true); |
| 55 | virtual int shiftTDI(const unsigned char *tdi, int length, bool last=true); |
| 56 | virtual int shiftTDO(unsigned char *tdo, int length, bool last=true); |
| 57 | virtual int shift(bool tdi, int length, bool last=true); |
| 58 | virtual int setTapState(tapState_t state); |
| 59 | virtual void tapTestLogicReset(); |
| 60 | virtual void cycleTCK(int n, bool tdi=1); |
| 61 | }; |
| 62 | |
| 63 | |
| 64 | |
| 65 | #endif // IOBASE_H |
| 66 |
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