[Keyboard] wilba.tech PCB refactoring (#6982)

* Cleanup

* Refactor VIA rules.mk

* WT mono backlight refactor, VIA support

* Added WT75-C

* Fixed compile error

* Cleanup rules.mk

* Review changes

* Review changes

1 files changed, 333 insertions, 8 deletions

diff --git a/keyboards/wilba_tech/wt_mono_backlight.c b/keyboards/wilba_tech/wt_mono_backlight.c
index bf485bce1f..69d82e582a 100644
--- a/keyboards/wilba_tech/wt_mono_backlight.c
+++ b/keyboards/wilba_tech/wt_mono_backlight.c
@@ -14,20 +14,43 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "quantum.h"
 #include "wt_mono_backlight.h"
+#include "wt_rgb_backlight_api.h" // reuse these for now
+#include "wt_rgb_backlight_keycodes.h" // reuse these for now
+
 #include "drivers/avr/i2c_master.h"
 #include "drivers/issi/is31fl3736.h"
-
 #include <avr/interrupt.h>
 
+#include "progmem.h"
+#include "quantum/color.h"
+
 #define ISSI_ADDR_DEFAULT 0x50
 
+#define BACKLIGHT_EFFECT_MAX 3
+
+#ifndef MONO_BACKLIGHT_COLOR_1
+#define MONO_BACKLIGHT_COLOR_1 { .h = 0, .s = 255 }
+#endif
+
+backlight_config g_config = {
+    .disable_when_usb_suspended = MONO_BACKLIGHT_DISABLE_WHEN_USB_SUSPENDED,
+    .disable_after_timeout = MONO_BACKLIGHT_DISABLE_AFTER_TIMEOUT,
+    .brightness = MONO_BACKLIGHT_BRIGHTNESS,
+    .effect = MONO_BACKLIGHT_EFFECT,
+    .effect_speed = MONO_BACKLIGHT_EFFECT_SPEED,
+    .color_1 = MONO_BACKLIGHT_COLOR_1,
+};
+
 bool g_suspend_state = false;
+uint8_t g_indicator_state = 0;
 
 // Global tick at 20 Hz
 uint32_t g_tick = 0;
-uint8_t g_config_effect_speed = 0;
-uint8_t g_config_brightness = 255;
+
+// Ticks since any key was last hit.
+uint32_t g_any_key_hit = 0;
 
 void backlight_init_drivers(void)
 {
@@ -41,6 +64,10 @@ void backlight_init_drivers(void)
 	IS31FL3736_update_led_control_registers( ISSI_ADDR_DEFAULT, 0x00 );
 }
 
+void backlight_set_key_hit(uint8_t row, uint8_t column)
+{
+    g_any_key_hit = 0;
+}
 
 // This is (F_CPU/1024) / 20 Hz
 // = 15625 Hz / 20 Hz
@@ -82,13 +109,63 @@ void backlight_set_suspend_state(bool state)
 	g_suspend_state = state;
 }
 
+void backlight_set_indicator_state(uint8_t state)
+{
+    g_indicator_state = state;
+}
+
+void backlight_set_brightness_all( uint8_t value )
+{
+	IS31FL3736_mono_set_brightness_all( value );
+}
+
+void backlight_effect_all_off(void)
+{
+	IS31FL3736_mono_set_brightness_all( 0 );
+}
+
+void backlight_effect_all_on(void)
+{
+	IS31FL3736_mono_set_brightness_all( g_config.brightness );
+}
+
+void backlight_effect_raindrops(bool initialize)
+{
+    // Change one LED every tick
+    uint8_t led_to_change = ( g_tick & 0x000 ) == 0 ? rand() % 96 : 255;
+
+    for ( int i=0; i<96; i++ )
+    {
+        // If initialize, all get set to random brightness
+        // If not, all but one will stay the same as before.
+        if ( initialize || i == led_to_change )
+        {
+            IS31FL3736_mono_set_brightness(i, rand() & 0xFF );
+        }
+    }
+}
+
 void backlight_effect_cycle_all(void)
 {
-	uint8_t offset = ( g_tick << g_config_effect_speed ) & 0xFF;
+	uint8_t offset = ( g_tick << g_config.effect_speed ) & 0xFF;
 
 	backlight_set_brightness_all( offset );
 }
 
+// This runs after another backlight effect and replaces
+// colors already set
+void backlight_effect_indicators(void)
+{
+#if defined(MONO_BACKLIGHT_WT75_A)
+    HSV hsv = { .h = g_config.color_1.h, .s = g_config.color_1.s, .v = g_config.brightness };
+    RGB rgb = hsv_to_rgb( hsv );
+    // G8, H8, I8 -> (6*8+7) (7*8+7), (8*8+7)
+    IS31FL3736_mono_set_brightness(55, rgb.r);
+    IS31FL3736_mono_set_brightness(63, rgb.g);
+    IS31FL3736_mono_set_brightness(71, rgb.b);
+#endif // MONO_BACKLIGHT_WT75_A
+}
+
 ISR(TIMER3_COMPA_vect)
 {
 	// delay 1 second before driving LEDs or doing anything else
@@ -100,8 +177,154 @@ ISR(TIMER3_COMPA_vect)
 
 	g_tick++;
 
-	//backlight_effect_cycle_all();
-	backlight_set_brightness_all( 255 );
+    if ( g_any_key_hit < 0xFFFFFFFF )
+    {
+        g_any_key_hit++;
+    }
+
+    // Ideally we would also stop sending zeros to the LED driver PWM buffers
+    // while suspended and just do a software shutdown. This is a cheap hack for now.
+    bool suspend_backlight = ((g_suspend_state && g_config.disable_when_usb_suspended) ||
+            (g_config.disable_after_timeout > 0 && g_any_key_hit > g_config.disable_after_timeout * 60 * 20));
+    uint8_t effect = suspend_backlight ? 0 : g_config.effect;
+
+    // Keep track of the effect used last time,
+    // detect change in effect, so each effect can
+    // have an optional initialization.
+    static uint8_t effect_last = 255;
+    bool initialize = effect != effect_last;
+    effect_last = effect;
+
+    // this gets ticked at 20 Hz.
+    // each effect can opt to do calculations
+    // and/or request PWM buffer updates.
+    switch ( effect )
+    {
+        case 0:
+            backlight_effect_all_off();
+            break;
+        case 1:
+            backlight_effect_all_on();;
+            break;
+        case 2:
+            backlight_effect_raindrops(initialize);
+            break;
+        default:
+            backlight_effect_all_off();
+            break;
+	}
+
+    if ( ! suspend_backlight )
+    {
+        backlight_effect_indicators();
+    }
+}
+
+// Some helpers for setting/getting HSV
+void _set_color( HS *color, uint8_t *data )
+{
+    color->h = data[0];
+    color->s = data[1];
+}
+
+void _get_color( HS *color, uint8_t *data )
+{
+    data[0] = color->h;
+    data[1] = color->s;
+}
+
+void backlight_config_set_value( uint8_t *data )
+{
+    bool reinitialize = false;
+    uint8_t *value_id = &(data[0]);
+    uint8_t *value_data = &(data[1]);
+    switch ( *value_id )
+    {
+        case id_disable_when_usb_suspended:
+        {
+            g_config.disable_when_usb_suspended = (bool)*value_data;
+            break;
+        }
+        case id_disable_after_timeout:
+        {
+            g_config.disable_after_timeout = *value_data;
+            break;
+        }
+        case id_brightness:
+        {
+            g_config.brightness = *value_data;
+            break;
+        }
+        case id_effect:
+        {
+            g_config.effect = *value_data;
+            break;
+        }
+        case id_effect_speed:
+        {
+            g_config.effect_speed = *value_data;
+            break;
+        }
+        case id_color_1:
+        {
+            _set_color( &(g_config.color_1), value_data );
+            break;
+        }
+    }
+
+    if ( reinitialize )
+    {
+        backlight_init_drivers();
+    }
+}
+
+void backlight_config_get_value( uint8_t *data )
+{
+    uint8_t *value_id = &(data[0]);
+    uint8_t *value_data = &(data[1]);
+    switch ( *value_id )
+    {
+        case id_disable_when_usb_suspended:
+        {
+            *value_data = ( g_config.disable_when_usb_suspended ? 1 : 0 );
+            break;
+        }
+        case id_disable_after_timeout:
+        {
+            *value_data = g_config.disable_after_timeout;
+            break;
+        }
+        case id_brightness:
+        {
+            *value_data = g_config.brightness;
+            break;
+        }
+        case id_effect:
+        {
+            *value_data = g_config.effect;
+            break;
+        }
+        case id_effect_speed:
+        {
+            *value_data = g_config.effect_speed;
+            break;
+        }
+        case id_color_1:
+        {
+            _get_color( &(g_config.color_1), value_data );
+            break;
+        }
+    }
+}
+
+void backlight_config_load(void)
+{
+    eeprom_read_block( &g_config, ((void*)MONO_BACKLIGHT_CONFIG_EEPROM_ADDR), sizeof(backlight_config) );
+}
+
+void backlight_config_save(void)
+{
+    eeprom_update_block( &g_config, ((void*)MONO_BACKLIGHT_CONFIG_EEPROM_ADDR), sizeof(backlight_config) );
 }
 
 void backlight_update_pwm_buffers(void)
@@ -109,8 +332,110 @@ void backlight_update_pwm_buffers(void)
 	IS31FL3736_update_pwm_buffers(ISSI_ADDR_DEFAULT,0x00);
 }
 
-void backlight_set_brightness_all( uint8_t value )
+bool process_record_backlight(uint16_t keycode, keyrecord_t *record)
 {
-	IS31FL3736_mono_set_brightness_all( value );
+    // Record keypresses for backlight effects
+    if ( record->event.pressed )
+    {
+        backlight_set_key_hit( record->event.key.row, record->event.key.col );
+    }
+
+    switch(keycode)
+    {
+        case BR_INC:
+            if (record->event.pressed)
+            {
+                backlight_brightness_increase();
+            }
+            return false;
+            break;
+        case BR_DEC:
+            if (record->event.pressed)
+            {
+                backlight_brightness_decrease();
+            }
+            return false;
+            break;
+        case EF_INC:
+            if (record->event.pressed)
+            {
+                backlight_effect_increase();
+            }
+            return false;
+            break;
+        case EF_DEC:
+            if (record->event.pressed)
+            {
+                backlight_effect_decrease();
+            }
+            return false;
+            break;
+        case ES_INC:
+            if (record->event.pressed)
+            {
+                backlight_effect_speed_increase();
+            }
+            return false;
+            break;
+        case ES_DEC:
+            if (record->event.pressed)
+            {
+                backlight_effect_speed_decrease();
+            }
+            return false;
+            break;
+    }
+
+    return true;
+}
+
+// Deals with the messy details of incrementing an integer
+uint8_t increment( uint8_t value, uint8_t step, uint8_t min, uint8_t max )
+{
+    int16_t new_value = value;
+    new_value += step;
+    return MIN( MAX( new_value, min ), max );
 }
 
+uint8_t decrement( uint8_t value, uint8_t step, uint8_t min, uint8_t max )
+{
+    int16_t new_value = value;
+    new_value -= step;
+    return MIN( MAX( new_value, min ), max );
+}
+
+void backlight_effect_increase(void)
+{
+    g_config.effect = increment( g_config.effect, 1, 0, BACKLIGHT_EFFECT_MAX );
+    backlight_config_save();
+}
+
+void backlight_effect_decrease(void)
+{
+    g_config.effect = decrement( g_config.effect, 1, 0, BACKLIGHT_EFFECT_MAX );
+    backlight_config_save();
+}
+
+void backlight_effect_speed_increase(void)
+{
+    g_config.effect_speed = increment( g_config.effect_speed, 1, 0, 3 );
+    backlight_config_save();
+}
+
+void backlight_effect_speed_decrease(void)
+{
+    g_config.effect_speed = decrement( g_config.effect_speed, 1, 0, 3 );
+    backlight_config_save();
+}
+
+void backlight_brightness_increase(void)
+{
+    g_config.brightness = increment( g_config.brightness, 8, 0, 255 );
+    backlight_config_save();
+}
+
+void backlight_brightness_decrease(void)
+{
+    g_config.brightness = decrement( g_config.brightness, 8, 0, 255 );
+    backlight_config_save();
+}