2 * Copyright 2018 Jack Humbert <jack.humb@gmail.com>
3 * Copyright 2019 Drashna Jaelre (Christopher Courtney) <drashna@live.com>
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 #include "dip_switch.h"
24 #if !defined(DIP_SWITCH_PINS)
25 # error "No DIP switch pads defined by DIP_SWITCH_PINS"
28 #define NUMBER_OF_DIP_SWITCHES (sizeof(dip_switch_pad) / sizeof(pin_t))
29 static pin_t dip_switch_pad[] = DIP_SWITCH_PINS;
30 static bool dip_switch_state[NUMBER_OF_DIP_SWITCHES] = {0};
31 static bool last_dip_switch_state[NUMBER_OF_DIP_SWITCHES] = {0};
33 __attribute__((weak)) void dip_switch_update_user(uint8_t index, bool active) {}
35 __attribute__((weak)) void dip_switch_update_kb(uint8_t index, bool active) { dip_switch_update_user(index, active); }
37 __attribute__((weak)) void dip_switch_update_mask_user(uint32_t state) {}
39 __attribute__((weak)) void dip_switch_update_mask_kb(uint32_t state) { dip_switch_update_mask_user(state); }
41 void dip_switch_init(void) {
42 for (uint8_t i = 0; i < NUMBER_OF_DIP_SWITCHES; i++) {
43 setPinInputHigh(dip_switch_pad[i]);
45 dip_switch_read(true);
48 void dip_switch_read(bool forced) {
49 bool has_dip_state_changed = false;
50 uint32_t dip_switch_mask = 0;
52 for (uint8_t i = 0; i < NUMBER_OF_DIP_SWITCHES; i++) {
53 dip_switch_state[i] = !readPin(dip_switch_pad[i]);
54 dip_switch_mask |= dip_switch_state[i] << i;
55 if (last_dip_switch_state[i] ^ dip_switch_state[i] || forced) {
56 has_dip_state_changed = true;
57 dip_switch_update_kb(i, dip_switch_state[i]);
60 if (has_dip_state_changed) {
61 dip_switch_update_mask_kb(dip_switch_mask);
63 memcpy(last_dip_switch_state, dip_switch_state, sizeof(&dip_switch_state));