/* * 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" // 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)) void dip_switch_update_user(uint8_t index, bool active) {} __attribute__((weak)) void dip_switch_update_kb(uint8_t index, bool active) { dip_switch_update_user(index, active); } __attribute__((weak)) void dip_switch_update_mask_user(uint32_t state) {} __attribute__((weak)) void dip_switch_update_mask_kb(uint32_t state) { dip_switch_update_mask_user(state); } void dip_switch_init(void) { #ifdef DIP_SWITCH_PINS 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)); } }