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"
25 #if !defined(DIP_SWITCH_PINS)
26 # error "No DIP switch pads defined by DIP_SWITCH_PINS"
29 #define NUMBER_OF_DIP_SWITCHES (sizeof(dip_switch_pad)/sizeof(pin_t))
30 static pin_t dip_switch_pad[] = DIP_SWITCH_PINS;
31 static bool dip_switch_state[NUMBER_OF_DIP_SWITCHES] = { 0 };
32 static bool last_dip_switch_state[NUMBER_OF_DIP_SWITCHES] = { 0 };
36 void dip_switch_update_user(uint8_t index, bool active) {}
39 void dip_switch_update_kb(uint8_t index, bool active) { dip_switch_update_user(index, active); }
42 void dip_switch_update_mask_user(uint32_t state) {}
45 void dip_switch_update_mask_kb(uint32_t state) { dip_switch_update_mask_user(state); }
47 void dip_switch_init(void) {
48 for (uint8_t i = 0; i < NUMBER_OF_DIP_SWITCHES; i++) {
49 setPinInputHigh(dip_switch_pad[i]);
51 dip_switch_read(true);
55 void dip_switch_read(bool forced) {
56 bool has_dip_state_changed = false;
57 uint32_t dip_switch_mask = 0;
59 for (uint8_t i = 0; i < NUMBER_OF_DIP_SWITCHES; i++) {
60 dip_switch_state[i] = !readPin(dip_switch_pad[i]);
61 dip_switch_mask |= dip_switch_state[i] << i;
62 if (last_dip_switch_state[i] ^ dip_switch_state[i] || forced) {
63 has_dip_state_changed = true;
64 dip_switch_update_kb(i, dip_switch_state[i]);
67 if (has_dip_state_changed) {
68 dip_switch_update_mask_kb(dip_switch_mask);
70 memcpy(last_dip_switch_state, dip_switch_state, sizeof(&dip_switch_state));