625 lines
23 KiB
C
625 lines
23 KiB
C
/* Copyright 2022 Christopher Swenson
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include QMK_KEYBOARD_H
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enum planck_layers {
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_ENIGMA,
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_QWERTY,
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_FN,
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_LOWER,
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_RAISE
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};
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enum planck_normal_keycodes {
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QWERTY = SAFE_RANGE,
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ENIGMA,
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EN_A,
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EN_B,
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EN_C,
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EN_D,
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EN_E,
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EN_F,
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EN_G,
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EN_H,
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EN_I,
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EN_J,
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EN_K,
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EN_L,
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EN_M,
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EN_N,
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EN_O,
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EN_P,
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EN_Q,
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EN_R,
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EN_S,
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EN_T,
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EN_U,
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EN_V,
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EN_W,
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EN_X,
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EN_Y,
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EN_Z,
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EN_RES,
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EN_TEST,
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EN_DIAG,
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EN_BSPC,
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EN_SREF,
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EN_SROT,
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EN_SPOS,
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EN_SRIN,
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EN_SPLU
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};
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const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
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/* Enigma
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* ,-----------------------------------------------------------------------------------.
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* | Esc | Q | W | E | R | T | Y | U | I | O | P | Bksp |
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* |------+------+------+------+------+-------------+------+------+------+------+------|
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* | Tab | A | S | D | F | G | H | J | K | L | ; | " |
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* |------+------+------+------+------+------|------+------+------+------+------+------|
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* | Shift| Z | X | C | V | B | N | M | , | . | / |Enter |
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* |------+------+------+------+------+------+------+------+------+------+------+------|
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* | Ctrl | Fn | Alt | GUI |Lower | Space |Raise | Left | Down | Up |Right |
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* `-----------------------------------------------------------------------------------'
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*/
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[_ENIGMA] = LAYOUT_planck_mit(
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QK_GESC, EN_Q, EN_W, EN_E, EN_R, EN_T, EN_Y, EN_U, EN_I, EN_O, EN_P, KC_BSPC,
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KC_TAB, EN_A, EN_S, EN_D, EN_F, EN_G, EN_H, EN_J, EN_K, EN_L, KC_SCLN, KC_QUOT,
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KC_LSFT, EN_Z, EN_X, EN_C, EN_V, EN_B, EN_N, EN_M, KC_COMM, KC_DOT, KC_SLSH, KC_ENT,
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KC_LCTL, MO(_FN), KC_LGUI, KC_LALT, MO(_LOWER), KC_SPC, MO(_RAISE), KC_LEFT, KC_DOWN, KC_UP, KC_RGHT
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),
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/* Qwerty
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* ,-----------------------------------------------------------------------------------.
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* | Esc | Q | W | E | R | T | Y | U | I | O | P | Bksp |
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* |------+------+------+------+------+-------------+------+------+------+------+------|
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* | Tab | A | S | D | F | G | H | J | K | L | ; | " |
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* |------+------+------+------+------+------|------+------+------+------+------+------|
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* | Shift| Z | X | C | V | B | N | M | , | . | / |Enter |
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* |------+------+------+------+------+------+------+------+------+------+------+------|
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* | Ctrl | Fn | Alt | GUI |Lower | Space |Raise | Left | Down | Up |Right |
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* `-----------------------------------------------------------------------------------'
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*/
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[_QWERTY] = LAYOUT_planck_mit(
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QK_GESC, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_BSPC,
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KC_TAB, KC_A, KC_S, KC_D, KC_F, KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT,
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KC_LSFT, KC_Z, KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, KC_SLSH, KC_ENT,
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KC_LCTL, MO(_FN), KC_LGUI, KC_LALT, MO(_LOWER), KC_SPC, MO(_RAISE), KC_LEFT, KC_DOWN, KC_UP, KC_RGHT
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),
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/* Function
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* ,-----------------------------------------------------------------------------------.
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* | Boot | Reset| Diag | | | | | | | | Test |Revers|
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* |------+------+------+------+------+-------------+------+------+------+------+------|
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* | | | | | | | | | | | | |
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* |------+------+------+------+------+------|------+------+------+------+------+------|
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* | |Reflec|Rotors|Posn.s|Rings |Plugs | | |Enigma|Qwerty| | |
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* |------+------+------+------+------+------+------+------+------+------+------+------|
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* | | | | | | | | | | | |
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* `-----------------------------------------------------------------------------------'
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*/
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[_FN] = LAYOUT_planck_mit(
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QK_BOOT, EN_RES, EN_DIAG, _______, _______, _______, _______, _______, _______, _______, EN_TEST, EN_BSPC,
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_______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
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_______, EN_SREF, EN_SROT, EN_SPOS, EN_SRIN, EN_SPLU, _______, _______, QWERTY, ENIGMA, _______, _______,
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_______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______
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),
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/* Lower
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* ,-----------------------------------------------------------------------------------.
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* | ~ | ! | @ | # | $ | % | ^ | & | * | ( | ) | Bksp |
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* |------+------+------+------+------+-------------+------+------+------+------+------|
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* | | | | | | | | _ | + | { | } | | |
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* |------+------+------+------+------+------|------+------+------+------+------+------|
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* | Shift| | | | | | | | | | | |
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* |------+------+------+------+------+------+------+------+------+------+------+------|
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* | Ctrl | Fn | Alt | GUI |Lower | Space |Raise | Left | Down | Up |Right |
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* `-----------------------------------------------------------------------------------'
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*/
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[_LOWER] = LAYOUT_planck_mit(
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KC_TILD, KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN, KC_BSPC,
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_______, _______, _______, _______, _______, _______, _______, KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE,
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KC_LSFT, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
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KC_LCTL, _______, KC_LGUI, KC_LALT, _______, KC_SPC, _______, KC_LEFT, KC_DOWN, KC_UP, KC_RGHT
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),
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/* RAISE
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* ,-----------------------------------------------------------------------------------.
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* | ` | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | Bksp |
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* |------+------+------+------+------+-------------+------+------+------+------+------|
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* | | | | | | | | - | = | [ | ] | \ |
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* |------+------+------+------+------+------|------+------+------+------+------+------|
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* | Shift| | | | | | | | | | | |
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* |------+------+------+------+------+------+------+------+------+------+------+------|
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* | Ctrl | Fn | Alt | GUI |Lower | Space |Raise | Left | Down | Up |Right |
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* `-----------------------------------------------------------------------------------'
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*/
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[_RAISE] = LAYOUT_planck_mit(
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KC_GRV, KC_1, KC_2, KC_3, KC_4, KC_5, KC_6, KC_7, KC_8, KC_9, KC_0, KC_BSPC,
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_______, _______, _______, _______, _______, _______, _______, KC_MINS, KC_EQL, KC_LBRC, KC_RBRC, KC_BSLS,
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KC_LSFT, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
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KC_LCTL, _______, KC_LGUI, KC_LALT, _______, KC_SPC, _______, KC_LEFT, KC_DOWN, KC_UP, KC_RGHT
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),
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};
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char rotor_definitions[5][26] = {
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"EKMFLGDQVZNTOWYHXUSPAIBRCJ",
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"AJDKSIRUXBLHWTMCQGZNPYFVOE",
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"BDFHJLCPRTXVZNYEIWGAKMUSQO",
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"ESOVPZJAYQUIRHXLNFTGKDCMWB",
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"VZBRGITYUPSDNHLXAWMJQOFECK"
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};
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char reflector_definitions[3][26] = {
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"EJMZALYXVBWFCRQUONTSPIKHGD",
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"YRUHQSLDPXNGOKMIEBFZCWVJAT",
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"FVPJIAOYEDRZXWGCTKUQSBNMHL"
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};
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char notch[5] = "QEVJZ";
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typedef struct Settings {
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char rotor_order[3];
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char rotor_rings[3];
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char rotor_positions[3];
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char plugs[25];
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int plug_count;
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char reflector;
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} Settings;
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typedef struct KeyboardState {
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bool is_setting_reflector;
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bool is_setting_rotors;
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bool is_setting_rotor_positions;
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bool is_setting_rotor_rings;
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bool is_setting_plugs;
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char setting_progress[26];
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int setting_index;
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Settings current_settings;
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Settings default_settings;
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} KeyboardState;
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int bound(int letter) {
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return ((letter % 26) + 26) % 26;
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}
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char to_char(int letter) {
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return 'A' + letter;
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}
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int to_int(char letter) {
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return letter - 'A';
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}
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char encipher(char letter, Settings *settings) {
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int rotor_2_step = settings->rotor_positions[2] == notch[settings->rotor_order[2] - 1];
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int rotor_1_step = settings->rotor_positions[1] == notch[settings->rotor_order[1] - 1];
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// Advance the third rotor
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settings->rotor_positions[2]++;
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if (settings->rotor_positions[2] > 'Z') {
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settings->rotor_positions[2] -= 26;
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}
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// Maybe advance the second rotor, including double steps
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if (rotor_2_step || rotor_1_step) {
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settings->rotor_positions[1]++;
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if (settings->rotor_positions[1] > 'Z') {
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settings->rotor_positions[1] -= 26;
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}
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}
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// Maybe advance the first rotor
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if (rotor_1_step) {
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settings->rotor_positions[0]++;
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if (settings->rotor_positions[0] > 'Z') {
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settings->rotor_positions[0] -= 26;
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}
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}
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// Swap letters on plugboard
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for (int i = 0; i < settings->plug_count * 2; i += 2) {
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if (letter == settings->plugs[i]) {
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letter = settings->plugs[i + 1];
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} else if (letter == settings->plugs[i + 1]) {
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letter = settings->plugs[i];
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}
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}
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// Rotors (right to left)
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for (int rotor_index = 2; rotor_index >= 0; rotor_index--) {
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char *rotor_definition = rotor_definitions[settings->rotor_order[rotor_index] - 1];
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int position = to_int(settings->rotor_positions[rotor_index]);
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int ring = to_int(settings->rotor_rings[rotor_index]);
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int char_index = to_int(letter);
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letter = to_char(bound(
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to_int(rotor_definition[bound(char_index + position - ring)]) + ring - position
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));
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}
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// Swap via reflector
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letter = reflector_definitions[to_int(settings->reflector)][to_int(letter)];
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// Rotors in reverse (left to right)
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for (int rotor_index = 0; rotor_index < 3; rotor_index++) {
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char *rotor_definition = rotor_definitions[settings->rotor_order[rotor_index] - 1];
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int position = to_int(settings->rotor_positions[rotor_index]);
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int ring = to_int(settings->rotor_rings[rotor_index]);
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int search_index;
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for (search_index = 0; search_index < 26; search_index++) {
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if (
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rotor_definition[search_index]
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== to_char(bound(to_int(letter) - ring + position))
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) {
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break;
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}
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}
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letter = to_char(bound(search_index - position + ring));
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}
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// Plugboard again
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for (int i = 0; i < settings->plug_count * 2; i += 2) {
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if (letter == settings->plugs[i]) {
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letter = settings->plugs[i + 1];
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} else if (letter == settings->plugs[i + 1]) {
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letter = settings->plugs[i];
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}
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}
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return letter;
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}
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void init_enigma_default(Settings *settings) {
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settings->rotor_order[0] = 1;
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settings->rotor_rings[0] = 'A';
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settings->rotor_positions[0] = 'A';
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settings->rotor_order[1] = 2;
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settings->rotor_rings[1] = 'A';
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settings->rotor_positions[1] = 'A';
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settings->rotor_order[2] = 3;
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settings->rotor_rings[2] = 'A';
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settings->rotor_positions[2] = 'A';
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strcpy(settings->plugs, "");
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settings->plug_count = 0;
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settings->reflector = 'B';
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}
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void copy_settings(Settings *from, Settings *to) {
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to->rotor_order[0] = from->rotor_order[0];
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to->rotor_rings[0] = from->rotor_rings[0];
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to->rotor_positions[0] = from->rotor_positions[0];
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to->rotor_order[1] = from->rotor_order[1];
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to->rotor_rings[1] = from->rotor_rings[1];
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to->rotor_positions[1] = from->rotor_positions[1];
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to->rotor_order[2] = from->rotor_order[2];
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to->rotor_rings[2] = from->rotor_rings[2];
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to->rotor_positions[2] = from->rotor_positions[2];
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strncpy(to->plugs, from->plugs, from->plug_count * 2);
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to->plug_count = from->plug_count;
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to->reflector = from->reflector;
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}
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char *rotor_name(int rotor_number) {
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if (rotor_number == 1) {
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return "I";
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} else if (rotor_number == 2) {
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return "II";
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} else if (rotor_number == 3) {
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return "III";
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} else if (rotor_number == 4) {
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return "IV";
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} else if (rotor_number == 5) {
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return "V";
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}
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return "?";
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}
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void rotors_reverse(Settings *settings) {
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int rotor_2_step = settings->rotor_positions[2]
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== to_char(bound(to_int(notch[settings->rotor_order[2] - 1]) + 1));
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int rotor_1_step = settings->rotor_positions[1]
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== to_char(bound(to_int(notch[settings->rotor_order[1] - 1]) + 1));
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// Reverse third rotor
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settings->rotor_positions[2]--;
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if (settings->rotor_positions[2] < 'A') {
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settings->rotor_positions[2] += 26;
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}
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// Maybe reverse second rotor (including double steps)
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if (rotor_2_step || rotor_1_step) {
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settings->rotor_positions[1]--;
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if (settings->rotor_positions[1] < 'A') {
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settings->rotor_positions[1] += 26;
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}
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}
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// Maybe recerse first rotor
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if (rotor_1_step) {
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settings->rotor_positions[0]--;
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if (settings->rotor_positions[0] < 'A') {
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settings->rotor_positions[0] += 26;
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}
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}
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}
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void reset_settings(KeyboardState *state) {
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copy_settings(&state->default_settings, &state->current_settings);
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}
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void set_layer(uint8_t default_layer) {
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default_layer_set((layer_state_t)1 << default_layer);
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}
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void set_backlight(uint8_t mode, uint8_t hue, uint8_t sat, uint8_t val) {
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#ifdef RGBLIGHT_ENABLE
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rgblight_enable_noeeprom();
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rgblight_mode_noeeprom(mode);
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rgblight_sethsv_noeeprom(hue, sat, val);
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#endif
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}
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void clear_working_settings(KeyboardState *state) {
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state->is_setting_reflector = false;
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state->is_setting_rotors = false;
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state->is_setting_rotor_positions = false;
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state->is_setting_rotor_rings = false;
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state->is_setting_plugs = false;
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state->setting_index = 0;
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set_layer(_ENIGMA);
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set_backlight(RGBLIGHT_MODE_STATIC_LIGHT, HSV_RED);
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}
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void send_settings_string(Settings *settings) {
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send_char(settings->reflector);
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send_string(". ");
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send_string(rotor_name(settings->rotor_order[0]));
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send_char(settings->rotor_rings[0]);
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send_string("-");
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send_string(rotor_name(settings->rotor_order[1]));
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send_char(settings->rotor_rings[1]);
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send_string("-");
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send_string(rotor_name(settings->rotor_order[2]));
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send_char(settings->rotor_rings[2]);
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send_string(" (");
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send_char(settings->rotor_positions[0]);
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send_string(", ");
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send_char(settings->rotor_positions[1]);
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send_string(", ");
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send_char(settings->rotor_positions[2]);
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send_string(") ");
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for (int i = 0; i < settings->plug_count; i++) {
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send_char(settings->plugs[i * 2]);
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send_char(settings->plugs[i * 2 + 1]);
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send_string(" ");
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}
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send_string("\n");
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}
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void perform_test(Settings *settings) {
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for (int i = 0; i < 1000; i++) {
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send_char(encipher('A', settings) - ('A' - 'a'));
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}
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}
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void commit_plug_settings(KeyboardState *state) {
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state->default_settings.plug_count = state->setting_index / 2;
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for (int i = 0; i < state->default_settings.plug_count; i++) {
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state->default_settings.plugs[i * 2] = state->setting_progress[i * 2];
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state->default_settings.plugs[i * 2 + 1] = state->setting_progress[i * 2 + 1];
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}
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reset_settings(state);
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clear_working_settings(state);
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}
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void handle_set_reflector(char letter, KeyboardState *state) {
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if (letter >= 'A' && letter <= 'C') {
|
|
state->default_settings.reflector = letter;
|
|
reset_settings(state);
|
|
clear_working_settings(state);
|
|
}
|
|
}
|
|
|
|
bool handle_set_rotor(char letter, KeyboardState *state) {
|
|
bool is_valid = letter >= 'A' && letter <= 'E' && state->setting_index < 3;
|
|
if (is_valid) {
|
|
state->setting_progress[state->setting_index] = to_int(letter) + 1;
|
|
state->setting_index += 1;
|
|
if (state->setting_index == 3) {
|
|
state->default_settings.rotor_order[0] = state->setting_progress[0];
|
|
state->default_settings.rotor_order[1] = state->setting_progress[1];
|
|
state->default_settings.rotor_order[2] = state->setting_progress[2];
|
|
reset_settings(state);
|
|
clear_working_settings(state);
|
|
}
|
|
}
|
|
return is_valid;
|
|
}
|
|
|
|
bool handle_set_rotor_position(char letter, KeyboardState *state) {
|
|
bool is_valid = state->setting_index < 3; // Guaranteed to be A-Z already
|
|
if (is_valid) {
|
|
state->setting_progress[state->setting_index] = letter;
|
|
state->setting_index += 1;
|
|
if (state->setting_index == 3) {
|
|
state->default_settings.rotor_positions[0] = state->setting_progress[0];
|
|
state->default_settings.rotor_positions[1] = state->setting_progress[1];
|
|
state->default_settings.rotor_positions[2] = state->setting_progress[2];
|
|
reset_settings(state);
|
|
clear_working_settings(state);
|
|
}
|
|
}
|
|
return is_valid;
|
|
}
|
|
|
|
bool handle_set_rotor_ring(char letter, KeyboardState *state) {
|
|
bool is_valid = state->setting_index < 3;
|
|
if (is_valid) {
|
|
state->setting_progress[state->setting_index] = letter;
|
|
state->setting_index += 1;
|
|
if (state->setting_index == 3) {
|
|
state->default_settings.rotor_rings[0] = state->setting_progress[0];
|
|
state->default_settings.rotor_rings[1] = state->setting_progress[1];
|
|
state->default_settings.rotor_rings[2] = state->setting_progress[2];
|
|
reset_settings(state);
|
|
clear_working_settings(state);
|
|
}
|
|
}
|
|
return is_valid;
|
|
}
|
|
|
|
bool handle_set_plug(char letter, KeyboardState *state) {
|
|
bool is_valid = state->setting_index < 26;
|
|
if (is_valid) {
|
|
state->setting_progress[state->setting_index] = letter;
|
|
state->setting_index += 1;
|
|
}
|
|
return is_valid;
|
|
}
|
|
|
|
void handle_enigma_keypress(char letter, bool any_mods, KeyboardState *state) {
|
|
bool settings_valid = true;
|
|
if (letter) {
|
|
if (any_mods) {
|
|
tap_code(KC_A + to_int(letter));
|
|
} else if (state->is_setting_reflector) {
|
|
handle_set_reflector(letter, state);
|
|
} else if (state->is_setting_rotors) {
|
|
settings_valid = handle_set_rotor(letter, state);
|
|
} else if (state->is_setting_rotor_positions) {
|
|
settings_valid = handle_set_rotor_position(letter, state);
|
|
} else if (state->is_setting_rotor_rings) {
|
|
settings_valid = handle_set_rotor_ring(letter, state);
|
|
} else if (state->is_setting_plugs) {
|
|
settings_valid = handle_set_plug(letter, state);
|
|
} else {
|
|
char c2 = encipher(letter, &state->current_settings);
|
|
send_char(c2 - ('A' - 'a'));
|
|
}
|
|
}
|
|
if (!settings_valid) {
|
|
clear_working_settings(state);
|
|
}
|
|
}
|
|
|
|
KeyboardState STATE;
|
|
|
|
void keyboard_pre_init_user(void) {
|
|
init_enigma_default(&STATE.default_settings);
|
|
init_enigma_default(&STATE.current_settings);
|
|
clear_working_settings(&STATE);
|
|
}
|
|
|
|
bool process_record_user(uint16_t keycode, keyrecord_t *record) {
|
|
uint8_t letter_index;
|
|
bool letter_found = false;
|
|
if (record->event.pressed) {
|
|
switch (keycode) {
|
|
case QWERTY:
|
|
set_layer(_QWERTY);
|
|
set_backlight(RGBLIGHT_MODE_RAINBOW_SWIRL + 4, HSV_PURPLE);
|
|
break;
|
|
case ENIGMA:
|
|
set_layer(_ENIGMA);
|
|
set_backlight(RGBLIGHT_MODE_STATIC_LIGHT, HSV_RED);
|
|
break;
|
|
case EN_SREF:
|
|
reset_settings(&STATE);
|
|
STATE.is_setting_reflector = true;
|
|
set_layer(_ENIGMA);
|
|
set_backlight(RGBLIGHT_MODE_SNAKE, HSV_RED);
|
|
break;
|
|
case EN_SROT:
|
|
reset_settings(&STATE);
|
|
STATE.is_setting_rotors = true;
|
|
STATE.setting_index = 0;
|
|
set_layer(_ENIGMA);
|
|
set_backlight(RGBLIGHT_MODE_SNAKE, 10, 255, 255);
|
|
break;
|
|
case EN_SPOS:
|
|
reset_settings(&STATE);
|
|
STATE.is_setting_rotor_positions = true;
|
|
STATE.setting_index = 0;
|
|
set_layer(_ENIGMA);
|
|
set_backlight(RGBLIGHT_MODE_SNAKE, HSV_ORANGE);
|
|
break;
|
|
case EN_SRIN:
|
|
reset_settings(&STATE);
|
|
STATE.is_setting_rotor_rings = true;
|
|
STATE.setting_index = 0;
|
|
set_layer(_ENIGMA);
|
|
set_backlight(RGBLIGHT_MODE_SNAKE, HSV_GREEN);
|
|
break;
|
|
case EN_SPLU:
|
|
reset_settings(&STATE);
|
|
STATE.is_setting_plugs = true;
|
|
STATE.setting_index = 0;
|
|
set_layer(_ENIGMA);
|
|
set_backlight(RGBLIGHT_MODE_SNAKE, HSV_BLUE);
|
|
break;
|
|
case QK_GESC:
|
|
if (
|
|
STATE.is_setting_reflector
|
|
|| STATE.is_setting_rotors
|
|
|| STATE.is_setting_rotor_positions
|
|
|| STATE.is_setting_rotor_rings
|
|
|| STATE.is_setting_plugs
|
|
) {
|
|
clear_working_settings(&STATE);
|
|
return false;
|
|
}
|
|
break;
|
|
case KC_ENT:
|
|
if (STATE.is_setting_plugs) {
|
|
commit_plug_settings(&STATE);
|
|
return false;
|
|
}
|
|
break;
|
|
case EN_A ... EN_Z:
|
|
letter_index = keycode - EN_A;
|
|
letter_found = true;
|
|
break;
|
|
case EN_RES:
|
|
reset_settings(&STATE);
|
|
break;
|
|
case EN_TEST:
|
|
perform_test(&STATE.current_settings);
|
|
break;
|
|
case EN_DIAG:
|
|
send_settings_string(&STATE.current_settings);
|
|
break;
|
|
case EN_BSPC:
|
|
rotors_reverse(&STATE.current_settings);
|
|
tap_code(KC_BSPC);
|
|
break;
|
|
}
|
|
}
|
|
char letter = letter_found ? 'A' + letter_index : 0;
|
|
uint8_t mods = get_mods();
|
|
bool any_mods = (mods & MOD_MASK_CTRL) || (mods & MOD_MASK_ALT) || (mods & MOD_MASK_GUI);
|
|
handle_enigma_keypress(letter, any_mods, &STATE);
|
|
return true;
|
|
}
|
|
|
|
void keyboard_post_init_user(void) {
|
|
set_layer(_QWERTY);
|
|
set_backlight(RGBLIGHT_MODE_RAINBOW_SWIRL + 4, HSV_PURPLE);
|
|
}
|