mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
synced 2024-12-04 23:45:26 +00:00
52 lines
1.5 KiB
C++
52 lines
1.5 KiB
C++
/*
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* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
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*
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* This file is part of PortaPack.
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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 2, or (at your option)
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* 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; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "jtag.hpp"
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#include <cstdint>
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#include <cstddef>
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namespace jtag {
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uint32_t JTAG::shift(const size_t count, uint32_t value) {
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for (size_t i = 0; i < count; i++) {
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const auto tdo = target.clock(
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(i == (count - 1)) ? 1 : 0,
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value & 1);
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value >>= 1;
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value |= tdo << (count - 1);
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}
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return value;
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}
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uint32_t JTAG::shift_header(const size_t count, uint32_t value) {
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for (size_t i = 0; i < count; i++) {
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const auto tdo = target.clock(
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0,
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value & 1);
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value >>= 1;
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value |= tdo << (count - 1);
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}
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return value;
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}
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} /* namespace jtag */
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