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/* -*- mode: c++ -*-
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* kaleidoscope::device::gheavy::FaunchPad -- gHeavy FaunchPad hardware support for Kaleidoscope
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* Copyright (C) 2020 Keyboard.io, Inc
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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 version 3 of the GNU General Public License as
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* published by the Free Software Foundation.
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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 <http://www.gnu.org/licenses/>.
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*/
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#ifndef KALEIDOSCOPE_VIRTUAL_BUILD
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#ifdef ARDUINO_AVR_GHEAVY_FAUNCHPAD
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#include "kaleidoscope/device/gheavy/FaunchPad.h"
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#include "kaleidoscope/Runtime.h"
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#include "kaleidoscope/driver/keyscanner/Base_Impl.h"
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// Here, we set up aliases to the device's KeyScanner and KeyScannerProps
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// in the global namespace within the scope of this file. We'll use these
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// aliases to simplify some template initialization code below.
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using KeyScannerProps = typename kaleidoscope::device::gheavy::FaunchPadProps::KeyScannerProps;
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using KeyScanner = typename kaleidoscope::device::gheavy::FaunchPadProps::KeyScanner;
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namespace kaleidoscope {
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namespace device {
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namespace gheavy {
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// `KeyScannerProps` here refers to the alias set up above. We do not need to
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// prefix the `matrix_rows` and `matrix_columns` names within the array
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// declaration, because those are resolved within the context of the class, so
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// the `matrix_rows` in `KeyScannerProps::matrix_row_pins[matrix_rows]` gets
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// resolved as `KeyScannerProps::matrix_rows`.
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const uint8_t KeyScannerProps::matrix_rows;
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const uint8_t KeyScannerProps::matrix_columns;
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constexpr uint8_t KeyScannerProps::matrix_row_pins[matrix_rows];
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constexpr uint8_t KeyScannerProps::matrix_col_pins[matrix_columns];
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// `KeyScanner` here refers to the alias set up above, just like in the
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// `KeyScannerProps` case above.
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template<> KeyScanner::row_state_t KeyScanner::matrix_state_[KeyScannerProps::matrix_rows] = {};
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// We set up the TIMER1 interrupt vector here. Due to dependency reasons, this
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// cannot be in a header-only driver, and must be placed here.
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//
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// Timer1 is responsible for setting a property on the KeyScanner, which will
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// tell it to do a scan. We use this to make sure that scans happen at roughly
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// the intervals we want. We do the scan outside of the interrupt scope for
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// practical reasons: guarding every codepath against interrupts that can be
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// reached from the scan is far too tedious, for very little gain.
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ISR(TIMER1_OVF_vect) {
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Runtime.device().keyScanner().do_scan_ = true;
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}
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} // namespace gheavy
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} // namespace device
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} // namespace kaleidoscope
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#endif
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#endif // ifndef KALEIDOSCOPE_VIRTUAL_BUILD
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