Add simultaneous top and bottom Color LED deck support

examples/app_color_led_cycle/src/led_cycle.c

@@ -43,17 +43,38 @@ void appMain()
 {
   DEBUG_PRINT("Starting WRGB color cycling app...\n");
 
-  paramVarId_t idWrgb = paramGetVarId("colorled", "wrgb8888");
-  paramVarId_t idBrightnessCorr = paramGetVarId("colorled", "brightnessCorr");
+  // Detect which Color LED deck is attached (bottom or top)
+  paramVarId_t idBottomDetect = paramGetVarId("deck", "bcColorLedBot");
+  paramVarId_t idTopDetect = paramGetVarId("deck", "bcColorLedTop");
+
+  uint8_t bottomAttached = paramGetUint(idBottomDetect);
+  uint8_t topAttached = paramGetUint(idTopDetect);
+
+  const char* deckParamGroup = NULL;
+
+  // Use the first detected deck
+  if (bottomAttached) {
+    deckParamGroup = "colorLedBot";
+    DEBUG_PRINT("Color LED Bottom deck detected\n");
+  } else if (topAttached) {
+    deckParamGroup = "colorLedTop";
+    DEBUG_PRINT("Color LED Top deck detected\n");
+  } else {
+    DEBUG_PRINT("ERROR: No Color LED deck detected!\n");
+    return;
+  }
+
+  paramVarId_t idWrgb = paramGetVarId(deckParamGroup, "wrgb8888");
+  paramVarId_t idBrightCorr = paramGetVarId(deckParamGroup, "brightCorr");
 
   // Enable brightness correction for perceptually uniform colors
   // Set to 1 (enabled) for balanced luminance across R/G/B/W channels
   // Set to 0 (disabled) for maximum brightness per channel
-  paramSetInt(idBrightnessCorr, 1);
+  paramSetInt(idBrightCorr, 1);
 
   // Subscribe to thermal throttle logs
-  logVarId_t idDeckTemp = logGetVarId("colorled", "deckTemp");
-  logVarId_t idThrottlePct = logGetVarId("colorled", "throttlePct");
+  logVarId_t idDeckTemp = logGetVarId(deckParamGroup, "deckTemp");
+  logVarId_t idThrottlePct = logGetVarId(deckParamGroup, "throttlePct");
 
   uint8_t r = 0, g = 0, b = 0, w = 0;
   int step = 0;

src/deck/drivers/interface/color_led_deck.h

@@ -2,18 +2,18 @@
 
 #include <stdint.h>
 
-#define COLORLED_DECK_I2C_ADDRESS 0x10
-
 // Protocol commands
 #define CMD_GET_VERSION         0x00
 #define CMD_SET_COLOR           0x01
 #define CMD_GET_THERMAL_STATUS  0x02
+#define CMD_GET_LED_POSITION    0x03
+#define CMD_GET_LED_CURRENT     0x04
 
 // Expected protocol version
-#define COLORLED_PROTOCOL_VERSION_REQUIRED 1
+#define COLORLED_PROTOCOL_VERSION_REQUIRED 2
 
 #define TXBUFFERSIZE  5
-#define RXBUFFERSIZE  3
+#define RXBUFFERSIZE  9
 
 typedef struct {
     uint8_t w, r, g, b;
@@ -26,9 +26,18 @@ typedef struct {
     uint8_t w_lumens;
 } ledLuminance_t;
 
-// LED luminance values from datasheet
+// LED luminance values from datasheet, adjusted for actual circuit current
+// Datasheet values assume equal current, but actual current depends on both
+// sense resistor AND LED forward voltage (V_F):
+//
+// Circuit: I = (Vsupply - V_F) / (R_mosfet + R_sense)
+// - Red:   I = (3.1V - 2.1V) / (0.070Ω + 3.4Ω) = 288 mA → 1.54× datasheet current
+// - G/B/W: I = (3.1V - 2.9V) / (0.070Ω + 1.0Ω) = 187 mA → 1.0× datasheet current
+//
+// Red's lower V_F gives more voltage headroom, overcoming higher sense resistance
+// LED brightness scales approximately linearly with current
 static const ledLuminance_t LED_LUMINANCE = {
-    .r_lumens = 90,
+    .r_lumens = 139,  // 90 lumens @ datasheet current × 1.54 current ratio = 139 lumens actual
     .g_lumens = 210,
     .b_lumens = 50,
     .w_lumens = 250