90 lines
2.8 KiB
C++
90 lines
2.8 KiB
C++
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/*
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* Copyright (C) 2020 Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef _JTAGINTERFACE_H_
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#define _JTAGINTERFACE_H_
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#include <iostream>
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#include <vector>
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/*!
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* \file JtagInterface.hpp
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* \class JtagInterface
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* \brief abstract class between jtag implementation and converters
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* \author Gwenhael Goavec-Merou
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*/
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class JtagInterface {
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public:
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virtual ~JtagInterface() {}
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virtual int setClkFreq(uint32_t clkHZ) = 0;
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virtual int setClkFreq(uint32_t clkHZ, char use_divide_by_5) = 0;
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/*!
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* \brief store TMS states in internal buffer. Not limited to 8 states
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* \param tms: array of TMS values
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* \param nb_bit: number of TMS states to store
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* \param tdi: state of TDI for all TMS to store
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* \return number of states stored
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*/
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virtual int storeTMS(uint8_t *tms, int nb_bit, uint8_t tdi = 1,
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bool read = false) = 0;
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/*!
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* \brief flush TMS internal buffer (ie. transmit to converter)
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* \param tdo: pointer for read operation. May be NULL
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* \param len: number of bit to send
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* \return number of bit send/received
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*/
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virtual int writeTMS(uint8_t *tdo, int len = 0) = 0;
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/*!
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* \brief store up to 8 TDI state(s) in internal buffer
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* \param tdi: TDI value(s)
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* \param tms: state of TMS for all TDI to store
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* \param nb_bit: number of TMS states to store
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* \return number of states stored
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*/
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virtual int storeTDI(uint8_t tdi, int nb_bit, bool read) = 0;
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/*!
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* \brief store TDI multiple of 8 states in internal buffer.
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* \param tdi: array of TDI values
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* \param tms: state of TMS for all TDI to store
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* \param nb_byte: number of TDI states to store
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* \return number of states stored
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*/
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virtual int storeTDI(uint8_t *tdi, int nb_byte, bool read) = 0;
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/*!
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* \brief flush TDI internal buffer (ie. transmit to converter)
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* \param tdo: pointer for read operation. May be NULL
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* \return number of bit send/received
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*/
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virtual int writeTDI(uint8_t *tdo, int nb_bit) = 0;
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/*!
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* \brief return internal buffer size (in byte)
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* \return internal buffer size
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*/
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virtual int get_buffer_size() = 0;
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/*!
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* \brief return status of internal buffer
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* \return true when internal buffer is full
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*/
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virtual bool isFull() = 0;
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};
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#endif // _JTAGINTERFACE_H_
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