[Keymap] Add new IIDX gamepad keymap for Synth Labs Solo

keyboards/synthlabs/solo/config.h

@@ -53,6 +53,6 @@
 #define BOOTMAGIC_LITE_ROW 1
 #define BOOTMAGIC_LITE_COLUMN 1
 
-#define JOYSTICK_BUTTON_COUNT 8
+#define JOYSTICK_BUTTON_COUNT 13
 #define JOYSTICK_AXES_COUNT 1
 #define JOYSTICK_AXES_RESOLUTION 16

keyboards/synthlabs/solo/keymaps/gamepad/readme.md

@@ -1,3 +1,3 @@
 # Gamepad Synth Labs Solo Layout
 
-This keymap is intended for usage as a IIDX controller. The rotary encoder is mapped as a virtual 1-axis joystick.
+This keymap is intended for usage as a generic gamepad. The rotary encoder is mapped as a virtual 1-axis joystick.

keyboards/synthlabs/solo/keymaps/iidx/keymap.c

@@ -0,0 +1,91 @@
+// Copyright 2022 Aaron Hong (@hongaaronc)
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include QMK_KEYBOARD_H
+
+#include "joystick.h"
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT_all(
+                                    JS_BUTTON0,JS_BUTTON1,JS_BUTTON2,JS_BUTTON3,JS_BUTTON4,JS_BUTTON5,JS_BUTTON6,
+        JS_BUTTON8, MO(1), JS_BUTTON7,
+                                    JS_BUTTON0,JS_BUTTON1,JS_BUTTON2,JS_BUTTON3,JS_BUTTON4,JS_BUTTON5,JS_BUTTON6
+    ),
+    [1] = LAYOUT_all(
+                                    JS_BUTTON9,JS_BUTTON0,JS_BUTTON10, _______,JS_BUTTON11,JS_BUTTON1,JS_BUTTON12,
+        _______, _______, _______,
+                                    JS_BUTTON10,JS_BUTTON0,JS_BUTTON9, _______,JS_BUTTON11,JS_BUTTON1,JS_BUTTON12
+    ),
+};
+
+#if defined(ENCODER_ENABLE)
+
+enum encoder_direction {
+    DIRECTION_CW,
+    DIRECTION_CCW
+};
+
+#ifdef ENCODERS
+int16_t encoder_stationary_release_delay_ms = 25;
+
+static uint8_t encoder_state[] = {0};
+static keypos_t encoder_cw[] = ENCODERS_CW_KEY;
+static keypos_t encoder_ccw[] = ENCODERS_CCW_KEY;
+static uint16_t encoder_last_update_time[] = {0};
+static enum encoder_direction encoder_last_direction[] = {DIRECTION_CW};
+#endif
+
+void encoder_action_unregister(uint8_t index) {
+#ifdef ENCODERS
+    if (encoder_state[index]) {
+        keyevent_t encoder_event = (keyevent_t) {
+            .key = encoder_state[index] >> 1 ? encoder_cw[index] : encoder_ccw[index],
+            .pressed = false,
+            .time = (timer_read() | 1)
+        };
+        encoder_state[index] = 0;
+        action_exec(encoder_event);
+    }
+#endif
+}
+
+void encoder_action_register(uint8_t index, bool clockwise) {
+#ifdef ENCODERS
+    keyevent_t encoder_event = (keyevent_t) {
+        .key = clockwise ? encoder_cw[index] : encoder_ccw[index],
+        .pressed = true,
+        .time = (timer_read() | 1)
+    };
+
+    /* Record the time that the encoder was detected as rotated */
+    encoder_last_update_time[index] = timer_read();
+
+    /* Check if the encoder direction has reversed, and if so unregister the opposite direction's event */
+    enum encoder_direction new_direction = clockwise ? DIRECTION_CW : DIRECTION_CCW;
+    if (encoder_last_direction[index] != new_direction) {
+        encoder_action_unregister(index);
+    }
+    encoder_last_direction[index] = new_direction;
+
+    encoder_state[index] = (clockwise ^ 1) | (clockwise << 1);
+    action_exec(encoder_event);
+#endif
+}
+
+void matrix_scan_user(void) {
+    /* If an encoder has been stationary for encoder_stationary_release_delay_ms, then unregister its event */
+    uint16_t current_time = timer_read();
+    for (int index = 0; index < ENCODERS; ++index) {
+        uint16_t elapsed_time_since_last_update = current_time - encoder_last_update_time[index];
+        if (elapsed_time_since_last_update >= encoder_stationary_release_delay_ms) {
+            encoder_action_unregister(index);
+        }
+    }
+}
+
+bool encoder_update_user(uint8_t index, bool clockwise) {
+    encoder_action_register(index, clockwise);
+    return false;
+}
+
+#endif

keyboards/synthlabs/solo/keymaps/iidx/readme.md

@@ -0,0 +1,15 @@
+# IIDX Synth Labs Solo Layout
+
+This keymap is intended for usage as a gamepad for [beatmania IIDX INFINITAS](https://p.eagate.573.jp/game/infinitas/2/index.html).
+
+This keycap follows the default keymapping for the game, shown here:
+![Default Keymapping Settings Screen](https://i.imgur.com/Va48FnZ.png)
+
+The face buttons correspond directly to ボタン 1 - ボタン 7
+
+Turning the knob clockwise corresponds to スクラッチ-右回転
+Turning the knob counter-clockwise corresponds to スクラッチ-左回転
+
+While holding down the knob button
+* The bottom row of face buttons corresponds to ボタン E1 - ボタン E4
+* The top-left and top-right face buttons correspond to ボタン 1 and ボタン 2, for adjustment of in-game scroll speed

keyboards/synthlabs/solo/keymaps/iidx/rules.mk

@@ -0,0 +1,2 @@
+JOYSTICK_ENABLE = yes
+DEBOUNCE_TYPE = sym_eager_pk