64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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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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#ifndef FTDIJTAGBITBANG_H
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#define FTDIJTAGBITBANG_H
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#include <ftdi.h>
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#include <iostream>
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#include <string>
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#include <vector>
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#include "board.hpp"
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#include "jtagInterface.hpp"
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#include "ftdipp_mpsse.hpp"
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/*!
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* \file FtdiJtagBitBang.hpp
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* \class FtdiJtagBitBang
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* \brief concrete class between jtag implementation and FTDI capable bitbang mode
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* \author Gwenhael Goavec-Merou
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*/
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class FtdiJtagBitBang : public JtagInterface, private FTDIpp_MPSSE {
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public:
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FtdiJtagBitBang(const FTDIpp_MPSSE::mpsse_bit_config &cable,
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const jtag_pins_conf_t *pin_conf, std::string dev, const std::string &serial,
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uint32_t clkHZ, uint8_t verbose = 0);
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virtual ~FtdiJtagBitBang();
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int setClkFreq(uint32_t clkHZ) override;
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/* TMS */
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int writeTMS(uint8_t *tms, uint32_t len, bool flush_buffer) override;
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/* TDI */
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int writeTDI(uint8_t *tx, uint8_t *rx, uint32_t len, bool end) override;
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int toggleClk(uint8_t tms, uint8_t tdo, uint32_t clk_len) override;
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/*!
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* \brief return internal buffer size (in byte).
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* \return _buffer_size divided by 2 (two byte for clk) and divided by 8 (one
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* state == one byte)
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*/
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int get_buffer_size() override { return _buffer_size/8/2; }
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bool isFull() override { return _num == 8*get_buffer_size();}
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int flush() override;
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private:
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int write(uint8_t *tdo, int nb_bit);
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int setBitmode(uint8_t mode);
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uint8_t _bitmode;
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uint8_t _tck_pin; /*!< tck pin: 1 << pin id */
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uint8_t _tms_pin; /*!< tms pin: 1 << pin id */
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uint8_t _tdo_pin; /*!< tdo pin: 1 << pin id */
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uint8_t _tdi_pin; /*!< tdi pin: 1 << pin id */
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uint8_t _curr_tms;
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int _rx_size;
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};
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#endif
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