feat(backlight): Add backlight state changed event

Add a backlight state changed event whenever the backlight is updated
ReFil · Dec 12, 2024 · ca2ea82 · ca2ea82
1 parent 7013158
commit ca2ea82
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Showing 5 changed files with 38 additions and 7 deletions.
diff --git a/app/CMakeLists.txt b/app/CMakeLists.txt
@@ -88,7 +88,9 @@ if ((NOT CONFIG_ZMK_SPLIT) OR CONFIG_ZMK_SPLIT_ROLE_CENTRAL)
 endif()
 
 target_sources_ifdef(CONFIG_ZMK_RGB_UNDERGLOW app PRIVATE src/behaviors/behavior_rgb_underglow.c)
+
 target_sources_ifdef(CONFIG_ZMK_BACKLIGHT app PRIVATE src/behaviors/behavior_backlight.c)
+target_sources_ifdef(CONFIG_ZMK_BACKLIGHT app PRIVATE src/events/backlight_state_changed.c)
 
 target_sources_ifdef(CONFIG_ZMK_BATTERY_REPORTING app PRIVATE src/events/battery_state_changed.c)
 target_sources_ifdef(CONFIG_ZMK_BATTERY_REPORTING app PRIVATE src/battery.c)

diff --git a/app/include/zmk/backlight.h b/app/include/zmk/backlight.h
@@ -6,6 +6,11 @@
 
 #pragma once
 
+struct zmk_backlight_state {
+    uint8_t brightness;
+    bool on;
+};
+
 int zmk_backlight_on(void);
 int zmk_backlight_off(void);
 int zmk_backlight_toggle(void);

diff --git a/app/include/zmk/events/backlight_state_changed.h b/app/include/zmk/events/backlight_state_changed.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2024 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#pragma once
+
+#include <zephyr/kernel.h>
+#include <zmk/event_manager.h>
+#include <zmk/backlight.h>
+
+struct zmk_backlight_state_changed {
+    struct zmk_backlight_state state;
+};
+
+ZMK_EVENT_DECLARE(zmk_backlight_state_changed);
diff --git a/app/src/backlight.c b/app/src/backlight.c
@@ -19,6 +19,7 @@
 #include <zmk/event_manager.h>
 #include <zmk/events/activity_state_changed.h>
 #include <zmk/events/usb_conn_state_changed.h>
+#include <zmk/events/backlight_state_changed.h>
 
 LOG_MODULE_DECLARE(zmk, CONFIG_ZMK_LOG_LEVEL);
 
@@ -34,13 +35,8 @@ static const struct device *const backlight_dev = DEVICE_DT_GET(DT_CHOSEN(zmk_ba
 
 #define BRT_MAX 100
 
-struct backlight_state {
-    uint8_t brightness;
-    bool on;
-};
-
-static struct backlight_state state = {.brightness = CONFIG_ZMK_BACKLIGHT_BRT_START,
-                                       .on = IS_ENABLED(CONFIG_ZMK_BACKLIGHT_ON_START)};
+static struct zmk_backlight_state state = {.brightness = CONFIG_ZMK_BACKLIGHT_BRT_START,
+                                           .on = IS_ENABLED(CONFIG_ZMK_BACKLIGHT_ON_START)};
 
 static int zmk_backlight_update(void) {
     uint8_t brt = zmk_backlight_get_brt();
@@ -53,6 +49,7 @@ static int zmk_backlight_update(void) {
             return rc;
         }
     }
+    raise_zmk_backlight_state_changed((struct zmk_backlight_state_changed){.state = state});
     return 0;
 }
 

diff --git a/app/src/events/backlight_state_changed.c b/app/src/events/backlight_state_changed.c
@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2024 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <zephyr/kernel.h>
+#include <zmk/events/backlight_state_changed.h>
+
+ZMK_EVENT_IMPL(zmk_backlight_state_changed);