98 lines
3.1 KiB
C
98 lines
3.1 KiB
C
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/* Copyright 2017 Jason Williams (Wilba)
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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 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 <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "keymap.h" // to get keymaps[][][]
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#include "dynamic_keymap.h"
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#ifdef DYNAMIC_KEYMAP_ENABLE
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#ifndef DYNAMIC_KEYMAP_EEPROM_ADDR
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#error DYNAMIC_KEYMAP_EEPROM_ADDR not defined
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#endif
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#ifndef DYNAMIC_KEYMAP_LAYER_COUNT
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#error DYNAMIC_KEYMAP_LAYER_COUNT not defined
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#endif
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#define KC_EENULL 0xFFFF // TODO: move to enum quantum_keycodes
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void *dynamic_keymap_key_to_eeprom_address(uint8_t layer, uint8_t row, uint8_t column)
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{
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// TODO: optimize this with some left shifts
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return ((void*)DYNAMIC_KEYMAP_EEPROM_ADDR) + ( layer * MATRIX_ROWS * MATRIX_COLS * 2 ) +
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( row * MATRIX_COLS * 2 ) + ( column * 2 );
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}
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uint16_t dynamic_keymap_get_keycode(uint8_t layer, uint8_t row, uint8_t column)
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{
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void *address = dynamic_keymap_key_to_eeprom_address(layer, row, column);
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// Big endian, so we can read/write EEPROM directly from host if we want
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uint16_t keycode = eeprom_read_byte(address) << 8;
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keycode |= eeprom_read_byte(address + 1);
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return keycode;
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}
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void dynamic_keymap_set_keycode(uint8_t layer, uint8_t row, uint8_t column, uint16_t keycode)
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{
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void *address = dynamic_keymap_key_to_eeprom_address(layer, row, column);
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// Big endian, so we can read/write EEPROM directly from host if we want
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eeprom_update_byte(address, (uint8_t)(keycode >> 8));
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eeprom_update_byte(address+1, (uint8_t)(keycode & 0xFF));
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}
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void dynamic_keymap_clear_all(void)
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{
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// Save "empty" keymaps.
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for ( int layer = 0; layer < DYNAMIC_KEYMAP_LAYER_COUNT; layer++ )
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{
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for ( int row = 0; row < MATRIX_ROWS; row++ )
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{
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for ( int column = 0; column < MATRIX_COLS; column++ )
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{
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dynamic_keymap_set_keycode(layer, row, column, KC_EENULL);
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}
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}
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}
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}
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// This overrides the one in quantum/keymap_common.c
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uint16_t keymap_key_to_keycode(uint8_t layer, keypos_t key)
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{
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// This used to test EEPROM for magic bytes, but it was redundant.
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// Test for EEPROM usage change (fresh install, address change, etc.)
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// externally and call dynamic_keymap_default_save()
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if ( layer < DYNAMIC_KEYMAP_LAYER_COUNT &&
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key.row < MATRIX_ROWS && // possibly redundant
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key.col < MATRIX_COLS ) // possibly redundant
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{
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uint16_t keycode = dynamic_keymap_get_keycode(layer, key.row, key.col);
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// If keycode is not "empty", return it, otherwise
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// drop down to return the one in flash
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if ( keycode != KC_EENULL)
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{
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return keycode;
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}
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}
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return pgm_read_word(&keymaps[layer][key.row][key.col]);
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}
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#endif // DYNAMIC_KEYMAP_ENABLE
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