From 5863d20be1d0595727ab722b34b8fa7b50172fd1 Mon Sep 17 00:00:00 2001
From: whowechina <whowechina@gmail.com>
Date: Tue, 18 Jun 2024 11:17:03 +0800
Subject: [PATCH] Improve light brightness control

---
 firmware/src/light.c | 5 +++--
 firmware/src/main.c  | 7 +++++--
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/firmware/src/light.c b/firmware/src/light.c
index b8a9524..aaa1ad5 100644
--- a/firmware/src/light.c
+++ b/firmware/src/light.c
@@ -378,14 +378,15 @@ static void rainbow_control(uint32_t delta_ms)
     }
 
     /* non linear speed change for better visual */
-
     int range = rainbow.speed.to - rainbow.speed.from;
     int progress = fast_sqrt(rainbow.elapsed * 10000 / rainbow.smooth_ms);
     rainbow.speed.current = rainbow.speed.from + range * progress / 100;
 
     range = rainbow.level.to - rainbow.level.from;
-    progress = fast_sqrt(rainbow.elapsed * 10000 / rainbow.smooth_ms);
+    progress = rainbow.elapsed * 100 / rainbow.smooth_ms;
     rainbow.level.current = rainbow.level.from + range * progress / 100;
+
+    printf("\nlevel: %d", rainbow.level.current);
 }
 
 #define RAINBOW_PITCH 37
diff --git a/firmware/src/main.c b/firmware/src/main.c
index 7132ca5..edbc0f2 100644
--- a/firmware/src/main.c
+++ b/firmware/src/main.c
@@ -115,9 +115,12 @@ static void light_mode_update()
 {
     static bool was_cardio = true;
     bool cardio = !reader_is_active() && !hid_is_active();
+    static uint8_t last_level;
+    bool level_changed = (last_level != aic_cfg->light.level_idle);
 
-    if (cardio && !was_cardio) {
-        light_rainbow(1, 1, aic_cfg->light.level_idle);
+    if (cardio && (!was_cardio || level_changed)) {
+        light_rainbow(1, 1000, aic_cfg->light.level_idle);
+        last_level = aic_cfg->light.level_idle;
     }
 
     was_cardio = cardio;