- /*
- * Copyright 2018 Jack Humbert <jack.humb@gmail.com>
- * Copyright 2019 Drashna Jaelre (Christopher Courtney) <drashna@live.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
- #include "dip_switch.h"
- #ifdef SPLIT_KEYBOARD
- # include "split_common/split_util.h"
- #endif
-
- // for memcpy
- #include <string.h>
-
- #if !defined(DIP_SWITCH_PINS) && !defined(DIP_SWITCH_MATRIX_GRID)
- # error "Either DIP_SWITCH_PINS or DIP_SWITCH_MATRIX_GRID must be defined."
- #endif
-
- #if defined(DIP_SWITCH_PINS) && defined(DIP_SWITCH_MATRIX_GRID)
- # error "Both DIP_SWITCH_PINS and DIP_SWITCH_MATRIX_GRID are defined."
- #endif
-
- #ifdef DIP_SWITCH_PINS
- # define NUMBER_OF_DIP_SWITCHES (sizeof(dip_switch_pad) / sizeof(pin_t))
- static pin_t dip_switch_pad[] = DIP_SWITCH_PINS;
- #endif
-
- #ifdef DIP_SWITCH_MATRIX_GRID
- typedef struct matrix_index_t {
- uint8_t row;
- uint8_t col;
- } matrix_index_t;
-
- # define NUMBER_OF_DIP_SWITCHES (sizeof(dip_switch_pad) / sizeof(matrix_index_t))
- static matrix_index_t dip_switch_pad[] = DIP_SWITCH_MATRIX_GRID;
- extern bool peek_matrix(uint8_t row_index, uint8_t col_index, bool read_raw);
- static uint16_t scan_count;
- #endif /* DIP_SWITCH_MATRIX_GRID */
-
- static bool dip_switch_state[NUMBER_OF_DIP_SWITCHES] = {0};
- static bool last_dip_switch_state[NUMBER_OF_DIP_SWITCHES] = {0};
-
- __attribute__((weak)) bool dip_switch_update_user(uint8_t index, bool active) { return true; }
-
- __attribute__((weak)) bool dip_switch_update_kb(uint8_t index, bool active) { return dip_switch_update_user(index, active); }
-
- __attribute__((weak)) bool dip_switch_update_mask_user(uint32_t state) { return true; }
-
- __attribute__((weak)) bool dip_switch_update_mask_kb(uint32_t state) { return dip_switch_update_mask_user(state); }
-
- void dip_switch_init(void) {
- #ifdef DIP_SWITCH_PINS
- # if defined(SPLIT_KEYBOARD) && defined(DIP_SWITCH_PINS_RIGHT)
- if (!isLeftHand) {
- const pin_t dip_switch_pad_right[] = DIP_SWITCH_PINS_RIGHT;
- for (uint8_t i = 0; i < NUMBER_OF_DIP_SWITCHES; i++) {
- dip_switch_pad[i] = dip_switch_pad_right[i];
- }
- }
- # endif
- for (uint8_t i = 0; i < NUMBER_OF_DIP_SWITCHES; i++) {
- setPinInputHigh(dip_switch_pad[i]);
- }
- dip_switch_read(true);
- #endif
- #ifdef DIP_SWITCH_MATRIX_GRID
- scan_count = 0;
- #endif
- }
-
- void dip_switch_read(bool forced) {
- bool has_dip_state_changed = false;
- uint32_t dip_switch_mask = 0;
-
- #ifdef DIP_SWITCH_MATRIX_GRID
- bool read_raw = false;
-
- if (scan_count < 500) {
- scan_count++;
- if (scan_count == 10) {
- read_raw = true;
- forced = true; /* First reading of the dip switch */
- } else {
- return;
- }
- }
- #endif
-
- for (uint8_t i = 0; i < NUMBER_OF_DIP_SWITCHES; i++) {
- #ifdef DIP_SWITCH_PINS
- dip_switch_state[i] = !readPin(dip_switch_pad[i]);
- #endif
- #ifdef DIP_SWITCH_MATRIX_GRID
- dip_switch_state[i] = peek_matrix(dip_switch_pad[i].row, dip_switch_pad[i].col, read_raw);
- #endif
- dip_switch_mask |= dip_switch_state[i] << i;
- if (last_dip_switch_state[i] != dip_switch_state[i] || forced) {
- has_dip_state_changed = true;
- dip_switch_update_kb(i, dip_switch_state[i]);
- }
- }
- if (has_dip_state_changed) {
- dip_switch_update_mask_kb(dip_switch_mask);
- memcpy(last_dip_switch_state, dip_switch_state, sizeof(dip_switch_state));
- }
- }
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