From cd1b0934aa536b6d48b5492d775dff9ace06a639 Mon Sep 17 00:00:00 2001
From: Sebastian <hi@jbbth.net>
Date: Wed, 28 May 2025 01:41:12 +0200
Subject: [PATCH] introduced lookup table for led ring cw

---
 soundcube-firmware/soundcube-firmware.ino | 29 ++++++++++++++++-------
 tools/index_luts.py                       | 17 +++++++++++++
 2 files changed, 37 insertions(+), 9 deletions(-)
 create mode 100644 tools/index_luts.py

diff --git a/soundcube-firmware/soundcube-firmware.ino b/soundcube-firmware/soundcube-firmware.ino
index 36dd8ce..c65e694 100644
--- a/soundcube-firmware/soundcube-firmware.ino
+++ b/soundcube-firmware/soundcube-firmware.ino
@@ -22,6 +22,8 @@ PWMAudio ui_snd(8);
 
 enum BUTTON {CVINL, CVINR, INL, INR, OUTR, OUTL, CVOUTR, CVOUTL, RIGHT, LEFT, SELECT, DEBUG1, DEBUG2, DEBUG3};
 
+int lut_ring_cw[48] = {39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,50,49,48,47,46,45,44,43,42,41,40};
+
 CRGB ui_leds[74];
 CRGB edge_leds[11];
 
@@ -199,6 +201,11 @@ void loop() {
     ui_leds[i + 3] = CRGB(0, 0, 0);
   }
 
+  // Rotary button LEDs
+  ui_leds[0] = CRGB(0, 0, 0);
+  ui_leds[1] = CRGB(0, 0, 0);
+  ui_leds[2] = CRGB(0, 0, 0);
+
   // flag = true when a button is pushed
   if (flag) {
     int val = TCA.read16();
@@ -221,9 +228,14 @@ void loop() {
     }
 
     // Flash led ring 
-    for (int i = 0; i < 48; i++) {
-        ui_leds[i + 3] = CRGB(0, 15, 0);
-    }
+    // for (int i = 0; i < 48; i++) {
+    //     ui_leds[i + 3] = CRGB(0, 15, 0);
+    // }
+
+    // Flash encoder leds
+    ui_leds[0] = CRGB(0, 100, 50);
+    ui_leds[1] = CRGB(0, 100, 50);
+    ui_leds[2] = CRGB(0, 100, 50);
 
     // Switch through LED matrix
     if(buttons[RIGHT]) active++;
@@ -234,10 +246,6 @@ void loop() {
     flag = false;
   }
 
-  // Rotary button LEDs
-  ui_leds[0] = CRGB(0, 0, 15);
-  ui_leds[1] = CRGB(0, 0, 15);
-  ui_leds[2] = CRGB(0, 0, 15);
 
   // empty LED matrix
   for (int i = 0; i < 13; i++) {
@@ -251,9 +259,12 @@ void loop() {
   active_led_ring = (position / 32) % 48;
   
   // set active LED ring LED
-  ui_leds[active_led_ring + 3] = CRGB(255, 255, 255);
+  for(int i = 0; i < active_led_ring; i++){
+    ui_leds[lut_ring_cw[i]] = CRGB(50, 0, 25);
+  }
 
   FastLED.show();
 
   delay(1); // wait 1ms
-}
\ No newline at end of file
+}
+
diff --git a/tools/index_luts.py b/tools/index_luts.py
new file mode 100644
index 0000000..6589305
--- /dev/null
+++ b/tools/index_luts.py
@@ -0,0 +1,17 @@
+leds = []
+for i in range(3,51):
+    leds.append(i)
+leds_first = leds[0:37]
+leds_first.reverse()
+leds_last = leds[37:48]
+leds_last.reverse()
+leds_yeah = leds_first + leds_last
+print("int lut_ring_cw[48] = {", end="")
+for i in range(0,48):
+    if i < 47:
+        print(leds_yeah[i], end=",")
+    else:
+        print(leds_yeah[i], end="")
+
+print("};", end="")
+print()