[Keyboard] Add Synth Labs Solo keyboard (#16103)

Co-authored-by: Drashna Jaelre <drashna@live.com>
Co-authored-by: Ryan <fauxpark@gmail.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/keyboards/synthlabs/solo/keymaps/gamepad/keymap.c b/keyboards/synthlabs/solo/keymaps/gamepad/keymap.c
new file mode 100644
index 0000000000..3e55f346f1
--- /dev/null
+++ b/keyboards/synthlabs/solo/keymaps/gamepad/keymap.c
@@ -0,0 +1,35 @@
+// 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,
+          KC_NO,   JS_BUTTON7,  KC_NO,
+                                    JS_BUTTON0,JS_BUTTON1,JS_BUTTON2,JS_BUTTON3,JS_BUTTON4,JS_BUTTON5,JS_BUTTON6
+    )
+};
+
+#if defined(JOYSTICK_ENABLE) && defined(ENCODER_ENABLE)
+
+int16_t joystick_position = 0;
+int16_t pulses_per_revolution = 24;     // Depends on encoder model. Usually 18ppr or 24ppr for Bourns EC11s.
+int16_t full_joystick_value = 32767;    // Equivalent to max value of int16. +full_joystick_value is +1.0 axis output. -full_joystick_value is -1.0 axis output.
+joystick_config_t joystick_axes[JOYSTICK_AXES_COUNT] = {
+    [0] = JOYSTICK_AXIS_VIRTUAL
+};
+
+bool encoder_update_kb(uint8_t index, bool clockwise) {
+    joystick_position += (clockwise ? 2 : -2) * (full_joystick_value / pulses_per_revolution);  // +2 and -2 are used, since +1.0 and -1.0 axis output refers to positions at half of a full rotation
+
+    if (joystick_position != joystick_status.axes[0]) {
+        joystick_status.axes[0] = joystick_position;
+        joystick_status.status |= JS_UPDATED;
+    }
+    return true;
+}
+
+#endif