Add localized LED flash effect on keypress to Massdrop ALT (#4340)

4 files changed, 425 insertions, 0 deletions

diff --git a/keyboards/massdrop/alt/keymaps/reywood/keymap.c b/keyboards/massdrop/alt/keymaps/reywood/keymap.c
new file mode 100644
index 0000000000..8b69f0e8eb
--- /dev/null
+++ b/keyboards/massdrop/alt/keymaps/reywood/keymap.c
@@ -0,0 +1,195 @@
+#include QMK_KEYBOARD_H
+#include "rgb_matrix_user.h"
+
+enum alt_keycodes {
+  L_BRI = SAFE_RANGE, //LED Brightness Increase
+  L_BRD,              //LED Brightness Decrease
+  L_PTN,              //LED Pattern Select Next
+  L_PTP,              //LED Pattern Select Previous
+  L_PSI,              //LED Pattern Speed Increase
+  L_PSD,              //LED Pattern Speed Decrease
+  L_T_MD,             //LED Toggle Mode
+  L_T_ONF,            //LED Toggle On / Off
+  L_ON,               //LED On
+  L_OFF,              //LED Off
+  L_T_BR,             //LED Toggle Breath Effect
+  L_T_PTD,            //LED Toggle Scrolling Pattern Direction
+  U_T_AUTO,           //USB Extra Port Toggle Auto Detect / Always Active
+  U_T_AGCR,           //USB Toggle Automatic GCR control
+  DBG_TOG,            //DEBUG Toggle On / Off
+  DBG_MTRX,           //DEBUG Toggle Matrix Prints
+  DBG_KBD,            //DEBUG Toggle Keyboard Prints
+  DBG_MOU,            //DEBUG Toggle Mouse Prints
+  MD_BOOT,            //Restart into bootloader after hold timeout
+};
+
+#define TG_NKRO MAGIC_TOGGLE_NKRO //Toggle 6KRO / NKRO mode
+#define ______ KC_TRNS
+
+keymap_config_t keymap_config;
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+  [0] = LAYOUT(
+    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_DEL,  \
+    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_HOME, \
+    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_ENT,  KC_PGUP, \
+    KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT,          KC_UP,   KC_PGDN, \
+    KC_LCTL, KC_LALT, KC_LGUI,                            KC_SPC,                             KC_RGUI, MO(1),   KC_LEFT, KC_DOWN, KC_RGHT  \
+  ),
+  [1] = LAYOUT(
+    KC_GRV,  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_MUTE, \
+    _______, _______, _______,  KC_UP,  _______, _______, _______, U_T_AUTO,U_T_AGCR,_______, KC_PSCR, KC_SLCK, KC_PAUS, _______, KC_END, \
+    _______, _______, KC_LEFT, KC_DOWN, KC_RGHT, _______, _______, _______, _______, _______, _______, _______,          _______, _______, \
+    _______, _______, _______, _______, _______, MD_BOOT, TG_NKRO, _______, _______, _______, _______, _______,          KC_VOLU, _______, \
+    _______, _______, _______,                            KC_MPLY,                              MO(2), _______, KC_MRWD, KC_VOLD, KC_MFFD  \
+  ),
+  [2] = LAYOUT(
+    _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+    L_T_BR,  L_PSD,   L_BRI,   L_PSI,   _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, \
+    L_T_PTD, L_PTP,   L_BRD,   L_PTN,   _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______, \
+    _______, L_T_MD,  L_T_ONF, _______, _______, _______, _______, _______, _______, _______, _______, _______,          _______, _______, \
+    _______, _______, _______,                            _______,                            _______, _______, _______, _______, _______  \
+  ),
+};
+
+const uint16_t PROGMEM fn_actions[] = {
+
+};
+
+// Runs just one time when the keyboard initializes.
+void matrix_init_user(void) {
+};
+
+// Runs constantly in the background, in a loop.
+void matrix_scan_user(void) {
+};
+
+#define MODS_SHIFT  (keyboard_report->mods & MOD_BIT(KC_LSHIFT) || keyboard_report->mods & MOD_BIT(KC_RSHIFT))
+#define MODS_CTRL  (keyboard_report->mods & MOD_BIT(KC_LCTL) || keyboard_report->mods & MOD_BIT(KC_RCTRL))
+#define MODS_ALT  (keyboard_report->mods & MOD_BIT(KC_LALT) || keyboard_report->mods & MOD_BIT(KC_RALT))
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  static uint32_t key_timer;
+
+  rgb_matrix_record_key_press(record);
+
+  switch (keycode) {
+    case L_BRI:
+      if (record->event.pressed) {
+        if (LED_GCR_STEP > LED_GCR_MAX - gcr_desired) gcr_desired = LED_GCR_MAX;
+        else gcr_desired += LED_GCR_STEP;
+        if (led_animation_breathing) gcr_breathe = gcr_desired;
+      }
+      return false;
+    case L_BRD:
+      if (record->event.pressed) {
+        if (LED_GCR_STEP > gcr_desired) gcr_desired = 0;
+        else gcr_desired -= LED_GCR_STEP;
+        if (led_animation_breathing) gcr_breathe = gcr_desired;
+      }
+      return false;
+    case L_PTN:
+      if (record->event.pressed) {
+        if (led_animation_id == led_setups_count - 1) led_animation_id = 0;
+        else led_animation_id++;
+      }
+      return false;
+    case L_PTP:
+      if (record->event.pressed) {
+        if (led_animation_id == 0) led_animation_id = led_setups_count - 1;
+        else led_animation_id--;
+      }
+      return false;
+    case L_PSI:
+      if (record->event.pressed) {
+        led_animation_speed += ANIMATION_SPEED_STEP;
+      }
+      return false;
+    case L_PSD:
+      if (record->event.pressed) {
+        led_animation_speed -= ANIMATION_SPEED_STEP;
+        if (led_animation_speed < 0) led_animation_speed = 0;
+      }
+      return false;
+    case L_T_MD:
+      if (record->event.pressed) {
+        led_lighting_mode++;
+        if (led_lighting_mode > LED_MODE_MAX_INDEX) led_lighting_mode = LED_MODE_NORMAL;
+      }
+      return false;
+    case L_T_ONF:
+      if (record->event.pressed) {
+        led_enabled = !led_enabled;
+        I2C3733_Control_Set(led_enabled);
+      }
+      return false;
+    case L_ON:
+      if (record->event.pressed) {
+        led_enabled = 1;
+        I2C3733_Control_Set(led_enabled);
+      }
+      return false;
+    case L_OFF:
+      if (record->event.pressed) {
+        led_enabled = 0;
+        I2C3733_Control_Set(led_enabled);
+      }
+      return false;
+    case L_T_BR:
+      if (record->event.pressed) {
+        led_animation_breathing = !led_animation_breathing;
+        if (led_animation_breathing) {
+          gcr_breathe = gcr_desired;
+          led_animation_breathe_cur = BREATHE_MIN_STEP;
+          breathe_dir = 1;
+        }
+      }
+      return false;
+    case L_T_PTD:
+      if (record->event.pressed) {
+        led_animation_direction = !led_animation_direction;
+      }
+      return false;
+    case U_T_AUTO:
+      if (record->event.pressed && MODS_SHIFT && MODS_CTRL) {
+        TOGGLE_FLAG_AND_PRINT(usb_extra_manual, "USB extra port manual mode");
+      }
+      return false;
+    case U_T_AGCR:
+      if (record->event.pressed && MODS_SHIFT && MODS_CTRL) {
+        TOGGLE_FLAG_AND_PRINT(usb_gcr_auto, "USB GCR auto mode");
+      }
+      return false;
+    case DBG_TOG:
+      if (record->event.pressed) {
+        TOGGLE_FLAG_AND_PRINT(debug_enable, "Debug mode");
+      }
+      return false;
+    case DBG_MTRX:
+      if (record->event.pressed) {
+        TOGGLE_FLAG_AND_PRINT(debug_matrix, "Debug matrix");
+      }
+      return false;
+    case DBG_KBD:
+      if (record->event.pressed) {
+        TOGGLE_FLAG_AND_PRINT(debug_keyboard, "Debug keyboard");
+      }
+      return false;
+    case DBG_MOU:
+      if (record->event.pressed) {
+        TOGGLE_FLAG_AND_PRINT(debug_mouse, "Debug mouse");
+      }
+      return false;
+    case MD_BOOT:
+      if (record->event.pressed) {
+        key_timer = timer_read32();
+      } else {
+        if (timer_elapsed32(key_timer) >= 500) {
+          reset_keyboard();
+        }
+      }
+      return false;
+    default:
+      return true; //Process all other keycodes normally
+  }
+}
diff --git a/keyboards/massdrop/alt/keymaps/reywood/rgb_matrix_user.c b/keyboards/massdrop/alt/keymaps/reywood/rgb_matrix_user.c
new file mode 100644
index 0000000000..36131e2020
--- /dev/null
+++ b/keyboards/massdrop/alt/keymaps/reywood/rgb_matrix_user.c
@@ -0,0 +1,193 @@
+#include "quantum.h"
+#include "led_matrix.h"
+
+extern issi3733_led_t *led_cur;
+extern uint8_t led_per_run;
+extern issi3733_led_t *lede;
+extern issi3733_led_t led_map[];
+
+static uint16_t last_boost_update;
+static uint8_t led_boosts[ISSI3733_LED_COUNT];
+static uint8_t led_boost_index;
+static uint8_t led_cur_index;
+
+#define LED_BOOST_REFRESH_INTERVAL_IN_MS 40
+#define LED_BOOST_DECAY 0.7
+#define LED_BOOST_PROPAGATE 0.5
+#define LED_BOOST_PEAK 100
+
+#define MIN_RGB 0x050008
+#define MIN_R (MIN_RGB >> 16 & 0xff)
+#define MIN_G (MIN_RGB >> 8 & 0xff)
+#define MIN_B (MIN_RGB & 0xff)
+
+#define MAX_RGB 0xc26eff
+#define MAX_R (MAX_RGB >> 16 & 0xff)
+#define MAX_G (MAX_RGB >> 8 & 0xff)
+#define MAX_B (MAX_RGB & 0xff)
+
+#define UNDERGLOW_RGB 0x4f002e
+#define UNDERGLOW_R (UNDERGLOW_RGB >> 16 & 0xff)
+#define UNDERGLOW_G (UNDERGLOW_RGB >> 8 & 0xff)
+#define UNDERGLOW_B (UNDERGLOW_RGB & 0xff)
+
+#define UNDERGLOW_SCAN_CODE 255
+
+#define max(a, b) (((a) > (b)) ? (a) : (b))
+
+#define __ -1
+static const uint8_t KEY_TO_LED_MAP[MATRIX_ROWS][MATRIX_COLS] = {
+  { 0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14},
+  {15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29},
+  {30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, __, 42, 43},
+  {44, __, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57},
+  {58, 59, 60, __, __, __, 61, __, __, __, 62, 63, 64, 65, 66},
+};
+
+#define KEY_LED_COUNT 67
+#define KP(c, r) { .col = c, .row = r } // shorthand for keypos_t
+static const keypos_t LED_TO_KEY_MAP[KEY_LED_COUNT] = {
+  KP(0, 0), KP(1, 0), KP(2, 0), KP(3, 0), KP(4, 0), KP(5, 0), KP(6, 0), KP(7, 0), KP(8, 0), KP(9, 0), KP(10, 0), KP(11, 0), KP(12, 0), KP(13, 0), KP(14, 0),
+  KP(0, 1), KP(1, 1), KP(2, 1), KP(3, 1), KP(4, 1), KP(5, 1), KP(6, 1), KP(7, 1), KP(8, 1), KP(9, 1), KP(10, 1), KP(11, 1), KP(12, 1), KP(13, 1), KP(14, 1),
+  KP(0, 2), KP(1, 2), KP(2, 2), KP(3, 2), KP(4, 2), KP(5, 2), KP(6, 2), KP(7, 2), KP(8, 2), KP(9, 2), KP(10, 2), KP(11, 2),            KP(13, 2), KP(14, 2),
+  KP(0, 3),           KP(2, 3), KP(3, 3), KP(4, 3), KP(5, 3), KP(6, 3), KP(7, 3), KP(8, 3), KP(9, 3), KP(10, 3), KP(11, 3), KP(12, 3), KP(13, 3), KP(14, 3),
+  KP(0, 4), KP(1, 4), KP(2, 4),                               KP(6, 4),                               KP(10, 4), KP(11, 4), KP(12, 4), KP(13, 4), KP(14, 4),
+};
+
+
+static void update_led_boosts(void);
+static void update_led_cur_rgb_values(void);
+static void set_nearest_led_to_max(uint8_t col, uint8_t row);
+static uint8_t calculate_new_color_component_value(uint8_t max, uint8_t min);
+static void calculate_new_led_boosts(uint8_t new_led_boosts[]);
+static uint8_t calculate_new_led_boost_at(int index);
+static uint8_t get_propagated_boost_from_neighbors(int led_position);
+static uint8_t get_led_boost_at_keypos(uint8_t row, uint8_t col);
+static void set_new_led_boosts(uint8_t* new_led_boosts);
+static uint8_t map_key_position_to_led_index(uint8_t col, uint8_t row);
+
+
+void rgb_matrix_init_user(void) {
+  for (int i = 0; i < ISSI3733_LED_COUNT; i++) {
+    led_boosts[i] = 0;
+  }
+  last_boost_update = timer_read();
+  led_boost_index = 0;
+  led_cur_index = 0;
+}
+
+void led_matrix_run(void) {
+  uint8_t led_this_run = 0;
+
+  if (led_cur == 0) { //Denotes start of new processing cycle in the case of chunked processing
+    led_cur = led_map;
+    led_cur_index = 0;
+  }
+  update_led_boosts();
+
+  while (led_cur < lede && led_this_run < led_per_run) {
+    update_led_cur_rgb_values();
+
+    led_cur++;
+    led_cur_index++;
+    led_this_run++;
+  }
+}
+
+void rgb_matrix_record_key_press(keyrecord_t *record) {
+  if (record->event.pressed) {
+    keypos_t key = record->event.key;
+    set_nearest_led_to_max(key.col, key.row);
+  }
+}
+
+
+static void update_led_boosts(void) {
+  if (timer_elapsed(last_boost_update) > LED_BOOST_REFRESH_INTERVAL_IN_MS) {
+    last_boost_update = timer_read();
+
+    uint8_t new_led_boosts[ISSI3733_LED_COUNT];
+    calculate_new_led_boosts(new_led_boosts);
+    set_new_led_boosts(new_led_boosts);
+  }
+}
+
+static void update_led_cur_rgb_values(void) {
+  if (led_cur->scan == UNDERGLOW_SCAN_CODE) {
+    *led_cur->rgb.r = UNDERGLOW_R;
+    *led_cur->rgb.g = UNDERGLOW_G;
+    *led_cur->rgb.b = UNDERGLOW_B;
+  } else {
+    *led_cur->rgb.r = calculate_new_color_component_value(MAX_R, MIN_R);
+    *led_cur->rgb.g = calculate_new_color_component_value(MAX_G, MIN_G);
+    *led_cur->rgb.b = calculate_new_color_component_value(MAX_B, MIN_B);
+  }
+}
+
+static void set_nearest_led_to_max(uint8_t col, uint8_t row) {
+  uint8_t led_index = map_key_position_to_led_index(col, row);
+  if (led_index >= 0 && led_index < ISSI3733_LED_COUNT) {
+    led_boosts[led_index] = LED_BOOST_PEAK;
+  }
+}
+
+static uint8_t calculate_new_color_component_value(uint8_t max, uint8_t min) {
+  uint8_t current_boost = led_boosts[led_cur_index];
+  return (float)(max - min) * current_boost / LED_BOOST_PEAK + min;
+}
+
+static void calculate_new_led_boosts(uint8_t new_led_boosts[]) {
+  for (int i = 0; i < ISSI3733_LED_COUNT; i++) {
+    new_led_boosts[i] = calculate_new_led_boost_at(i);
+  }
+}
+
+static uint8_t calculate_new_led_boost_at(int index) {
+  uint8_t decayed_boost = led_boosts[index] * LED_BOOST_DECAY;
+  uint8_t propagated_boost = get_propagated_boost_from_neighbors(index);
+  uint8_t new_boost = (propagated_boost > decayed_boost) ? propagated_boost : decayed_boost;
+  if (new_boost > LED_BOOST_PEAK) {
+    new_boost = LED_BOOST_PEAK;
+  }
+  return new_boost;
+}
+
+static uint8_t get_propagated_boost_from_neighbors(int led_position) {
+  if (led_position < 0 || led_position >= KEY_LED_COUNT) {
+    return 0;
+  }
+  keypos_t led_keypos = LED_TO_KEY_MAP[led_position];
+  uint8_t top_boost    = get_led_boost_at_keypos(led_keypos.row - 1, led_keypos.col);
+  uint8_t bottom_boost = get_led_boost_at_keypos(led_keypos.row + 1, led_keypos.col);
+  uint8_t left_boost   = get_led_boost_at_keypos(led_keypos.row, led_keypos.col - 1);
+  uint8_t right_boost  = get_led_boost_at_keypos(led_keypos.row, led_keypos.col + 1);
+  uint8_t max_boost = max(max(top_boost, bottom_boost), max(left_boost, right_boost));
+  if (max_boost > LED_BOOST_PEAK) {
+    max_boost = LED_BOOST_PEAK;
+  }
+  return max_boost * LED_BOOST_PROPAGATE;
+}
+
+static uint8_t get_led_boost_at_keypos(uint8_t row, uint8_t col) {
+  if (row < 0 || row >= MATRIX_ROWS || col < 0 || col >= MATRIX_COLS) {
+    return 0;
+  }
+  uint8_t led_index = KEY_TO_LED_MAP[row][col];
+  if (led_index < 0) {
+    return 0;
+  }
+  return led_boosts[led_index];
+}
+
+static void set_new_led_boosts(uint8_t* new_led_boosts) {
+  for (int i = 0; i < ISSI3733_LED_COUNT; i++) {
+    led_boosts[i] = new_led_boosts[i];
+  }
+}
+
+static uint8_t map_key_position_to_led_index(uint8_t col, uint8_t row) {
+  if (row >= 0 && row < MATRIX_ROWS && col >= 0 && col < MATRIX_COLS) {
+    return KEY_TO_LED_MAP[row][col];
+  }
+  return -1;
+}
diff --git a/keyboards/massdrop/alt/keymaps/reywood/rgb_matrix_user.h b/keyboards/massdrop/alt/keymaps/reywood/rgb_matrix_user.h
new file mode 100644
index 0000000000..4ffd202e9b
--- /dev/null
+++ b/keyboards/massdrop/alt/keymaps/reywood/rgb_matrix_user.h
@@ -0,0 +1,3 @@
+#pragma once
+
+void rgb_matrix_record_key_press(keyrecord_t *record);
diff --git a/keyboards/massdrop/alt/keymaps/reywood/rules.mk b/keyboards/massdrop/alt/keymaps/reywood/rules.mk
new file mode 100644
index 0000000000..b5b961a0f3
--- /dev/null
+++ b/keyboards/massdrop/alt/keymaps/reywood/rules.mk
@@ -0,0 +1,34 @@
+# project specific files
+SRC = led_programs.c
+SRC += matrix.c
+SRC += rgb_matrix_user.c
+
+#For platform and packs
+ARM_ATSAM = SAMD51J18A
+MCU = cortex-m4
+
+CUSTOM_MATRIX = yes
+
+# Build Options
+#   comment out to disable the options.
+#
+BOOTMAGIC_ENABLE = no       # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = no        # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes       # Audio control and System control(+450)
+CONSOLE_ENABLE = no         # Console for debug(+400)
+COMMAND_ENABLE = no         # Commands for debug and configuration
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no       # Breathing sleep LED during USB suspend
+# if this doesn't work, see here: https://github.com/tmk/tmk_keyboard/wiki/FAQ#nkro-doesnt-work
+NKRO_ENABLE = yes           # USB Nkey Rollover
+BACKLIGHT_ENABLE = no       # Enable keyboard backlight functionality on B7 by default
+RGBLIGHT_ENABLE = no        # Enable keyboard RGB underglow
+MIDI_ENABLE = no            # MIDI support (+2400 to 4200, depending on config)
+UNICODE_ENABLE = no         # Unicode
+BLUETOOTH_ENABLE = no       # Enable Bluetooth with the Adafruit EZ-Key HID
+AUDIO_ENABLE = no           # Audio output on port C6
+FAUXCLICKY_ENABLE = no      # Use buzzer to emulate clicky switches
+HD44780_ENABLE = no         # Enable support for HD44780 based LCDs (+400)
+VIRTSER_ENABLE = no         # USB Serial Driver
+RAW_ENABLE = no             # Raw device
+AUTO_SHIFT_ENABLE = no      # Auto Shift