Merge pull request #7618 from jeffhendrix/led_channel

Add ability to adjust LED Strip color with RC channel

AUTHORS

@@ -39,6 +39,7 @@ Hyon Lim
 Hubert Jozwiak
 James Harrison
 Jan Staal
+Jeff Hendrix
 Jeremy Waters
 Joe Hermaszewski
 Joe Poser

docs/LedStrip.md

@@ -115,6 +115,7 @@ Each LED has one base function:
 * `G` - `G`PS state.
 * `S` - R`S`SSI level.
 * `L` - Battery `L`evel.
+* `H` - C`H`annel.
 
 And each LED has overlays:
 
@@ -125,7 +126,7 @@ And each LED has overlays:
 * `O` - Lars`O`n Scanner (Cylon Effect).
 * `N` - Blink on la`N`ding (throttle < 50%).
 
-`cc` specifies the color number (0 based index).
+`cc` specifies the color number (0 based index), or Channel number to adjust Hue
 
 Example:
 
@@ -137,6 +138,7 @@ led 3 0,15:SD:AWI:0
 led 4 7,7::C:1
 led 5 8,8::C:2
 led 6 8,9::B:1
+led 7 8,10::H:6
 ```
 
 To erase an led, and to mark the end of the chain, use `0,0::` as the second argument, like this:

src/main/io/ledstrip.c

@@ -73,7 +73,7 @@
 #include "telemetry/telemetry.h"
 
 
-PG_REGISTER_WITH_RESET_FN(ledStripConfig_t, ledStripConfig, PG_LED_STRIP_CONFIG, 0);
+PG_REGISTER_WITH_RESET_FN(ledStripConfig_t, ledStripConfig, PG_LED_STRIP_CONFIG, 1);
 
 static bool ledStripInitialised = false;
 static bool ledStripEnabled = true;
@@ -220,7 +220,7 @@ static const hsvColor_t* getSC(ledSpecialColorIds_e index)
 }
 
 static const char directionCodes[LED_DIRECTION_COUNT] = { 'N', 'E', 'S', 'W', 'U', 'D' };
-static const char baseFunctionCodes[LED_BASEFUNCTION_COUNT]   = { 'C', 'F', 'A', 'L', 'S', 'G', 'R' };
+static const char baseFunctionCodes[LED_BASEFUNCTION_COUNT]   = { 'C', 'F', 'A', 'L', 'S', 'G', 'R', 'H' };
 static const char overlayCodes[LED_OVERLAY_COUNT]   = { 'T', 'O', 'B', 'N', 'I', 'W' };
 
 #define CHUNK_BUFFER_SIZE 11
@@ -438,6 +438,7 @@ static void applyLedFixedLayers(void)
 
         int fn = ledGetFunction(ledConfig);
         int hOffset = HSV_HUE_MAX;
+        uint8_t channel = 0;
 
         switch (fn) {
             case LED_FUNCTION_COLOR:
@@ -470,6 +471,18 @@ static void applyLedFixedLayers(void)
                 hOffset += scaleRange(getRSSI() * 100, 0, 1023, -30, 120);
                 break;
 
+            case LED_FUNCTION_CHANNEL:
+                channel = ledGetColor(ledConfig) - 1;
+                color = HSV(RED);
+                hOffset = scaleRange(rxGetChannelValue(channel), PWM_RANGE_MIN, PWM_RANGE_MAX, -1, 360);
+                // add black and white to range of colors
+                if (hOffset < 0) {
+                    color = HSV(BLACK);
+                } else if (hOffset > HSV_HUE_MAX) {
+                    color = HSV(WHITE);
+                }
+                break;
+
             default:
                 break;
         }

src/main/io/ledstrip.h

@@ -24,7 +24,7 @@
 #define LED_CONFIGURABLE_COLOR_COUNT   16
 #define LED_MODE_COUNT                  6
 #define LED_DIRECTION_COUNT             6
-#define LED_BASEFUNCTION_COUNT          7
+#define LED_BASEFUNCTION_COUNT          8
 #define LED_OVERLAY_COUNT               6
 #define LED_SPECIAL_COLOR_COUNT        11
 
@@ -124,6 +124,7 @@ typedef enum {
     LED_FUNCTION_RSSI,
     LED_FUNCTION_GPS,
     LED_FUNCTION_THRUST_RING,
+    LED_FUNCTION_CHANNEL,
 } ledBaseFunctionId_e;
 
 typedef enum {