1 /* Copyright 2017 Jason Williams (Wilba)
3 * This program is free software: you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation, either version 2 of the License, or
6 * (at your option) any later version.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 #include "keymap.h" // to get keymaps[][][]
20 #include "dynamic_keymap.h"
22 #ifdef DYNAMIC_KEYMAP_ENABLE
24 #ifndef DYNAMIC_KEYMAP_EEPROM_ADDR
25 #error DYNAMIC_KEYMAP_EEPROM_ADDR not defined
28 #ifndef DYNAMIC_KEYMAP_LAYER_COUNT
29 #error DYNAMIC_KEYMAP_LAYER_COUNT not defined
32 #define KC_EENULL 0xFFFF // TODO: move to enum quantum_keycodes
34 void *dynamic_keymap_key_to_eeprom_address(uint8_t layer, uint8_t row, uint8_t column)
36 // TODO: optimize this with some left shifts
37 return ((void*)DYNAMIC_KEYMAP_EEPROM_ADDR) + ( layer * MATRIX_ROWS * MATRIX_COLS * 2 ) +
38 ( row * MATRIX_COLS * 2 ) + ( column * 2 );
41 uint16_t dynamic_keymap_get_keycode(uint8_t layer, uint8_t row, uint8_t column)
43 void *address = dynamic_keymap_key_to_eeprom_address(layer, row, column);
44 // Big endian, so we can read/write EEPROM directly from host if we want
45 uint16_t keycode = eeprom_read_byte(address) << 8;
46 keycode |= eeprom_read_byte(address + 1);
50 void dynamic_keymap_set_keycode(uint8_t layer, uint8_t row, uint8_t column, uint16_t keycode)
52 void *address = dynamic_keymap_key_to_eeprom_address(layer, row, column);
53 // Big endian, so we can read/write EEPROM directly from host if we want
54 eeprom_update_byte(address, (uint8_t)(keycode >> 8));
55 eeprom_update_byte(address+1, (uint8_t)(keycode & 0xFF));
58 void dynamic_keymap_clear_all(void)
60 // Save "empty" keymaps.
61 for ( int layer = 0; layer < DYNAMIC_KEYMAP_LAYER_COUNT; layer++ )
63 for ( int row = 0; row < MATRIX_ROWS; row++ )
65 for ( int column = 0; column < MATRIX_COLS; column++ )
67 dynamic_keymap_set_keycode(layer, row, column, KC_EENULL);
73 // This overrides the one in quantum/keymap_common.c
74 uint16_t keymap_key_to_keycode(uint8_t layer, keypos_t key)
76 // This used to test EEPROM for magic bytes, but it was redundant.
77 // Test for EEPROM usage change (fresh install, address change, etc.)
78 // externally and call dynamic_keymap_default_save()
79 if ( layer < DYNAMIC_KEYMAP_LAYER_COUNT &&
80 key.row < MATRIX_ROWS && // possibly redundant
81 key.col < MATRIX_COLS ) // possibly redundant
83 uint16_t keycode = dynamic_keymap_get_keycode(layer, key.row, key.col);
85 // If keycode is not "empty", return it, otherwise
86 // drop down to return the one in flash
87 if ( keycode != KC_EENULL)
93 return pgm_read_word(&keymaps[layer][key.row][key.col]);
96 #endif // DYNAMIC_KEYMAP_ENABLE