[Keyboard] Added Handwired Redragon K552 Kumara (RGB) (#14004)

* Added Handwired Redragon K552 with default and via keymaps

* Resolve some request changes, and change the cols pin to a better one.

* Resolved request changes

* Added OLED support and resolve request change

* Increase polling rate to 1000hz

* Update font for OLED, and change logo

* Added LED Underglow support

* Add personal custom keymap

* Nit some line, to get better way to look on code

* Refactor everything and solved some issue.

* Resolved issue

5 files changed, 241 insertions, 0 deletions

diff --git a/keyboards/handwired/horrortroll/k552/keymaps/default/led/cool_diagonal.c b/keyboards/handwired/horrortroll/k552/keymaps/default/led/cool_diagonal.c
new file mode 100644
index 0000000000..2c518a5431
--- /dev/null
+++ b/keyboards/handwired/horrortroll/k552/keymaps/default/led/cool_diagonal.c
@@ -0,0 +1,22 @@
+/* Copyright 2021 HorrorTroll <https://github.com/HorrorTroll>
+ *
+ * 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/>.
+ */
+
+static HSV COOL_DIAGONAL_math(HSV hsv, uint8_t i, uint8_t time) {
+    hsv.h = (g_led_config.point[i].x / 4) - g_led_config.point[i].y - time;
+    return hsv;
+}
+
+bool COOL_DIAGONAL(effect_params_t* params) { return effect_runner_i(params, &COOL_DIAGONAL_math); }
\ No newline at end of file
diff --git a/keyboards/handwired/horrortroll/k552/keymaps/default/led/custom_gradient.c b/keyboards/handwired/horrortroll/k552/keymaps/default/led/custom_gradient.c
new file mode 100644
index 0000000000..49e4a242fb
--- /dev/null
+++ b/keyboards/handwired/horrortroll/k552/keymaps/default/led/custom_gradient.c
@@ -0,0 +1,74 @@
+/* Copyright 2021 HorrorTroll <https://github.com/HorrorTroll>
+ *
+ * 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/>.
+ */
+
+extern HSV gradient_0;
+extern HSV gradient_100;
+extern bool reflected_gradient;
+
+static HSV INTERPOLATE_HSV(float step, HSV gradient_0, HSV gradient_100) {
+    uint8_t cw, ccw;
+    HSV color;
+
+    cw = (gradient_0.h >= gradient_100.h) ? 255 + gradient_100.h - gradient_0.h : gradient_100.h - gradient_0.h;  // Hue range is 0 to 255.
+    ccw = (gradient_0.h >= gradient_100.h) ? gradient_0.h - gradient_100.h : 255 + gradient_0.h - gradient_100.h;
+
+    if( cw < ccw ) { // going clockwise
+        color.h = gradient_0.h + (uint8_t)(step * cw);
+    } else { // Going counter clockwise
+        color.h = gradient_0.h - (uint8_t)(step * ccw);
+    }
+
+    color.s = gradient_0.s + step * (gradient_100.s - gradient_0.s);
+
+    // Scale V with global RGB Matrix's V, so users can still control overall brightness with RGB_VAI & RGB_VAD0
+    color.v = round((gradient_0.v + step * (gradient_100.v - gradient_0.v)) * ((float)rgb_matrix_config.hsv.v / 255));
+
+    return color;
+}
+
+static HSV CUSTOM_GRADIENT_math(uint8_t led_x, uint8_t min_x, uint8_t max_x) {
+    float step = (float)led_x / (max_x - min_x);
+    float mid_gradient_pos = 0.5;
+
+    if( reflected_gradient ) {
+        if( step <= mid_gradient_pos ) {
+            return INTERPOLATE_HSV(step * (1/mid_gradient_pos), gradient_0, gradient_100);
+        } else {
+            return INTERPOLATE_HSV((step - mid_gradient_pos) * (1/(1-mid_gradient_pos)), gradient_100, gradient_0);
+        }
+
+    } else {
+        return INTERPOLATE_HSV(step, gradient_0, gradient_100);
+    }
+}
+
+static bool CUSTOM_GRADIENT(effect_params_t* params) {
+    RGB_MATRIX_USE_LIMITS(led_min, led_max);
+
+    uint8_t min_x = 0;  // X coordinate of the left-most LED
+    uint8_t max_x = 224; // X coordinate of the right-most LED
+
+    for (uint8_t i = led_min; i < led_max; i++) {
+        RGB_MATRIX_TEST_LED_FLAGS();
+
+        HSV hsv_orig = CUSTOM_GRADIENT_math(g_led_config.point[i].x, min_x, max_x);
+        RGB rgb = hsv_to_rgb(hsv_orig);
+
+        rgb_matrix_set_color(i, rgb.r, rgb.g, rgb.b);
+    }
+
+    return led_max < DRIVER_LED_TOTAL;
+}
diff --git a/keyboards/handwired/horrortroll/k552/keymaps/default/led/diagonal.c b/keyboards/handwired/horrortroll/k552/keymaps/default/led/diagonal.c
new file mode 100644
index 0000000000..19e3791bd6
--- /dev/null
+++ b/keyboards/handwired/horrortroll/k552/keymaps/default/led/diagonal.c
@@ -0,0 +1,22 @@
+/* Copyright 2021 HorrorTroll <https://github.com/HorrorTroll>
+ *
+ * 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/>.
+ */
+
+static HSV DIAGONAL_math(HSV hsv, uint8_t i, uint8_t time) {
+    hsv.h = g_led_config.point[i].x - g_led_config.point[i].y - time;
+    return hsv;
+}
+
+bool DIAGONAL(effect_params_t* params) { return effect_runner_i(params, &DIAGONAL_math); }
diff --git a/keyboards/handwired/horrortroll/k552/keymaps/default/led/kitt.c b/keyboards/handwired/horrortroll/k552/keymaps/default/led/kitt.c
new file mode 100644
index 0000000000..823eb5839b
--- /dev/null
+++ b/keyboards/handwired/horrortroll/k552/keymaps/default/led/kitt.c
@@ -0,0 +1,68 @@
+/* Copyright 2021 HorrorTroll <https://github.com/HorrorTroll>
+ *
+ * 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/>.
+ */
+
+// variable for startup animation
+bool BASE_EFFECT_NOT_STARTED_YET = true;
+uint8_t base_effect_startup_counter = 255;
+
+uint8_t led_count = 10;
+uint8_t led_first = 7;
+
+static uint8_t time_to_led(uint8_t time, uint8_t led_behind) {
+    uint16_t led_time = led_count * time;
+    uint16_t step = ((2 * led_count + (led_time / 128)) - led_behind) % (2 * led_count);
+    uint8_t led;
+
+    if (step < led_count) {
+        led = step;
+    } else {
+        led = led_count - 1 - (step - led_count);
+    }
+
+    return led;
+}
+
+static HSV KITT_math(HSV hsv, uint8_t i, uint8_t time) {
+
+    // reset base effect startup
+    if (i == 0) {
+        BASE_EFFECT_NOT_STARTED_YET = true;
+    }
+
+    hsv.h = 0;
+    hsv.s = 255;
+
+    if (i >= led_first && i < led_first + led_count) {
+        uint8_t j = i - led_first;
+        if (j == time_to_led(time, 0)) {
+            hsv.v = hsv.v;
+        } else if (j == time_to_led(time, 1)) {
+            hsv.v = hsv.v/2;
+        } else if (j == time_to_led(time, 2)) {
+            hsv.v = hsv.v/4;
+        } else if (j == time_to_led(time, 3)) {
+            hsv.v = hsv.v/8;
+        } else {
+            hsv.v = 0;
+        }
+    } else {
+        hsv.v = 0;
+    }
+
+    return hsv;
+}
+
+bool KITT(effect_params_t* params) { return effect_runner_i(params, &KITT_math); }
diff --git a/keyboards/handwired/horrortroll/k552/keymaps/default/led/random_breath_rainbow.c b/keyboards/handwired/horrortroll/k552/keymaps/default/led/random_breath_rainbow.c
new file mode 100644
index 0000000000..041417477b
--- /dev/null
+++ b/keyboards/handwired/horrortroll/k552/keymaps/default/led/random_breath_rainbow.c
@@ -0,0 +1,55 @@
+/* Copyright 2021 HorrorTroll <https://github.com/HorrorTroll>
+ *
+ * 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/>.
+ */
+
+static uint8_t offset[DRIVER_LED_TOTAL];
+
+static void doRandom_breath_rainbow(int i, effect_params_t* params) {
+    if (!HAS_ANY_FLAGS(g_led_config.flags[i], params->flags)) return;
+    uint16_t time = scale16by8(g_rgb_timer, rgb_matrix_config.speed / 6);
+
+    if (rand() * 50 == 1) {
+        if (rand() * 2 == 1) {
+            offset[i]++;
+        }
+        else {
+            offset[i]--;
+        }
+    }
+
+    //float val = (((float)sin8(time + offset[i]) / 256)/2.1) + .05;
+    HSV hsv = {0, 255, 255};
+    hsv.h = scale16by8(g_rgb_timer + offset[i], rgb_matrix_config.speed / 4) + (offset[i]*2);
+    hsv.v = scale8(abs8(sin8(time) - 128) * 2, hsv.v);
+    RGB rgb = rgb_matrix_hsv_to_rgb(hsv);
+    rgb_matrix_set_color(i, rgb.r, rgb.g, rgb.b);
+}
+
+bool RANDOM_BREATH_RAINBOW(effect_params_t* params) {
+    
+    if (!params->init) {
+        // Change one LED every tick, make sure speed is not 0
+        doRandom_breath_rainbow(rand() % DRIVER_LED_TOTAL, params);
+        return false;
+    }
+	
+    RGB_MATRIX_USE_LIMITS(led_min, led_max);
+
+    for (uint8_t i = led_min; i < led_max; i++) {
+        doRandom_breath_rainbow(i, params);
+    }
+
+    return led_max < DRIVER_LED_TOTAL;
+}