Keyboard: Port of TMK XT USB Converter (#3619)

* Converter: add XT USB converter from TMK

* Converter: port TMK code for USB converter to QMK

* Apply requested changes after code review by @drashna

- use "pragma once" instead of include guards
- use LAYOUT instead of KEYMAP
- allow customisation with matrix_init_user() and matrix_scan_user()
- set BOOTLOADER instead of BOOTLOADER_SIZE
- Add XT_ENABLE to OPT_DEFS

* Remove unnecessary lines

2 files changed, 56 insertions, 0 deletions

diff --git a/keyboards/converter/xt_usb/keymaps/default/config.h b/keyboards/converter/xt_usb/keymaps/default/config.h
new file mode 100644
index 0000000000..6f70f09bee
--- /dev/null
+++ b/keyboards/converter/xt_usb/keymaps/default/config.h
@@ -0,0 +1 @@
+#pragma once
diff --git a/keyboards/converter/xt_usb/keymaps/default/keymap.c b/keyboards/converter/xt_usb/keymaps/default/keymap.c
new file mode 100644
index 0000000000..3ef6060700
--- /dev/null
+++ b/keyboards/converter/xt_usb/keymaps/default/keymap.c
@@ -0,0 +1,55 @@
+#include QMK_KEYBOARD_H
+
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    /* IBM XT keyboard layout
+     * ,-------.  ,--------------------------------------------------------------------------.
+     * | F1| F2|  |Esc|  1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|  BS  |NumLck |ScrLck |
+     * |-------|  |--------------------------------------------------------------------------|
+     * | F3| F4|  | Tab |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ] |   |  7|  8|  9|  -|
+     * |-------|  |------------------------------------------------------|Ent|---------------|
+     * | F5| F6|  | Ctrl |  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|  `|   |  4|  5|  6|   |
+     * |-------|  |----------------------------------------------------------------------|   |
+     * | F7| F8|  |Shif|  \|  Z|  X|  C|  V|  B|  N|  M|  ,|  .|  /|Shift|PrS|  1|  2|  3|  +|
+     * |-------|  |----------------------------------------------------------------------|   |
+     * | F9|F10|  |  Alt  |               Space                  |CapsLck|   0   |   .   |   |
+     * `-------'  `--------------------------------------------------------------------------'
+     */
+    LAYOUT_xt( \
+    KC_F1,  KC_F2,    KC_ESC, KC_1,   KC_2,   KC_3,   KC_4,   KC_5,   KC_6,   KC_7,   KC_8,   KC_9,   KC_0,   KC_MINS,KC_EQL, KC_BSPC,     KC_NLCK,      KC_SLCK,
+    KC_F3,  KC_F4,    KC_TAB, KC_Q,   KC_W,   KC_E,   KC_R,   KC_T,   KC_Y,   KC_U,   KC_I,   KC_O,   KC_P,   KC_LBRC,KC_RBRC,        KC_P7,  KC_P8,  KC_P9,  KC_PMNS,
+    KC_F5,  KC_F6,    KC_LCTL,KC_A,   KC_S,   KC_D,   KC_F,   KC_G,   KC_H,   KC_J,   KC_K,   KC_L,   KC_SCLN,KC_QUOT,KC_GRV, KC_ENT, KC_P4,  KC_P5,  KC_P6,
+    KC_F7,  KC_F8,    KC_LSFT,KC_BSLS,KC_Z,   KC_X,   KC_C,   KC_V,   KC_B,   KC_N,   KC_M,   KC_COMM,KC_DOT, KC_SLSH,KC_RSFT,KC_PSCR,KC_P1,  KC_P2,  KC_P3,  KC_PPLS,
+    KC_F9,  KC_F10,   KC_LALT,                                    KC_SPC,                                       KC_CAPS,          KC_P0,          KC_PDOT
+    ),
+
+    /* Extended keyboard layout
+     *         ,-----------------------------------------------.
+     *         |F13|F14|F15|F16|F17|F18|F19|F20|F21|F22|F23|F24|
+     * ,---.   |-----------------------------------------------|     ,-----------.     ,-----------.
+     * |Esc|   |F1 |F2 |F3 |F4 |F5 |F6 |F7 |F8 |F9 |F10|F11|F12|     |PrS|ScL|Pau|     |VDn|VUp|Mut|
+     * `---'   `-----------------------------------------------'     `-----------'     `-----------'
+     * ,-----------------------------------------------------------. ,-----------. ,---------------.
+     * |  `|  1|  2|  3|  4|  5|  6|  7|  8|  9|  0|  -|  =|JPY|Bsp| |Ins|Hom|PgU| |NmL|  /|  *|  -|
+     * |-----------------------------------------------------------| |-----------| |---------------|
+     * |Tab  |  Q|  W|  E|  R|  T|  Y|  U|  I|  O|  P|  [|  ]|  \  | |Del|End|PgD| |  7|  8|  9|  +|
+     * |-----------------------------------------------------------| `-----------' |---------------|
+     * |CapsL |  A|  S|  D|  F|  G|  H|  J|  K|  L|  ;|  '|  #|Entr|               |  4|  5|  6|KP,|
+     * |-----------------------------------------------------------|     ,---.     |---------------|
+     * |Shft|  <|  Z|  X|  C|  V|  B|  N|  M|  ,|  .|  /| RO|Shift |     |Up |     |  1|  2|  3|KP=|
+     * |-----------------------------------------------------------| ,-----------. |---------------|
+     * |Ctl|Gui|Alt|MHEN|     Space      |HENK|KANA|Alt|Gui|App|Ctl| |Lef|Dow|Rig| |      0|  .|Ent|
+     * `-----------------------------------------------------------' `-----------' `---------------'
+     */
+    /* Try this if your keyboad has exotic keys.
+    LAYOUT(
+                 KC_F13, KC_F14, KC_F15, KC_F16, KC_F17, KC_F18, KC_F19, KC_F20, KC_F21, KC_F22, KC_F23, KC_F24,
+    KC_ESC,      KC_F1,  KC_F2,  KC_F3,  KC_F4,  KC_F5,  KC_F6,  KC_F7,  KC_F8,  KC_F9,  KC_F10, KC_F11, KC_F12,                 KC_PSCR,KC_SLCK,KC_PAUS,            KC_VOLD,KC_VOLU,KC_MUTE,
+    KC_GRV, KC_1,   KC_2,   KC_3,   KC_4,   KC_5,   KC_6,   KC_7,   KC_8,   KC_9,   KC_0,   KC_MINS,KC_EQL, KC_JYEN,KC_BSPC,     KC_INS, KC_HOME,KC_PGUP,    KC_NLCK,KC_PSLS,KC_PAST,KC_PMNS,
+    KC_TAB, KC_Q,   KC_W,   KC_E,   KC_R,   KC_T,   KC_Y,   KC_U,   KC_I,   KC_O,   KC_P,   KC_LBRC,KC_RBRC,        KC_BSLS,     KC_DEL, KC_END, KC_PGDN,    KC_P7,  KC_P8,  KC_P9,  KC_PPLS,
+    KC_CAPS,KC_A,   KC_S,   KC_D,   KC_F,   KC_G,   KC_H,   KC_J,   KC_K,   KC_L,   KC_SCLN,KC_QUOT,        KC_NUHS,KC_ENT,                                  KC_P4,  KC_P5,  KC_P6,  KC_PCMM,
+    KC_LSFT,KC_NUBS,KC_Z,   KC_X,   KC_C,   KC_V,   KC_B,   KC_N,   KC_M,   KC_COMM,KC_DOT, KC_SLSH,        KC_RO,  KC_RSFT,             KC_UP,              KC_P1,  KC_P2,  KC_P3,  KC_PENT,
+    KC_LCTL,KC_LGUI,KC_LALT,KC_MHEN,          KC_SPC,                       KC_HENK,KC_KANA,KC_RALT,KC_RGUI,KC_APP, KC_RCTL,     KC_LEFT,KC_DOWN,KC_RGHT,            KC_P0,  KC_PDOT,KC_PEQL
+    ),
+    */
+};