95 lines
2.7 KiB
C++
95 lines
2.7 KiB
C++
/*
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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 USBBLASTER_H
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#define USBBLASTER_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 UsbBlaster.hpp
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* \class UsbBlaster
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* \brief altera/intel usb blaster implementation
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* \author Gwenhael Goavec-Merou
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*/
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class UsbBlaster : public JtagInterface {
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public:
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UsbBlaster(bool verbose = false);
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virtual ~UsbBlaster();
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int setClkFreq(uint32_t clkHZ) override;
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int setClkFreq(uint32_t clkHZ, char use_divide_by_5) override {
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(void)clkHZ; (void) use_divide_by_5;
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return 1;}
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/*!
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* \brief drive TMS to move in JTAG state machine
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* \param tms serie of TMS state
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* \param len number of TMS state
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* \param flush_buffer force flushing the buffer
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* \return number of state written
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* */
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int writeTMS(uint8_t *tms, int 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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/*!
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* \brief toggle clock with static tms and tdi
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* \param tms TMS state
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* \param tdi TDI state
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* \param clk_len number of clock cycle
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* \return number of clock cycle
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* */
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int toggleClk(uint8_t tms, uint8_t tdi, 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 63/8/2; }
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bool isFull() override { return _nb_bit == 8*get_buffer_size();}
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int flush() override;
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private:
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struct ftdi_context *_ftdi;
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void init_internal();
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int writeByte(uint8_t *tdo, int nb_byte);
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int writeBit(uint8_t *tdo, int nb_bit);
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int write(bool read, int rd_len);
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int setBitmode(uint8_t mode);
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uint8_t *_in_buf;
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bool _verbose;
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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 _tdi_pin; /*!< tdi pin: 1 << pin id */
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int _nb_bit;
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uint8_t _curr_tms;
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uint16_t _buffer_size;
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};
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#endif
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