Improve cycle times by avoiding an led strip update while one is still

in progress.

src/main/drivers/light_ws2811strip.c

@@ -149,6 +149,11 @@ void DMA1_Channel6_IRQHandler(void)
     }
 }
 
+bool isWS2811LedStripReady(void)
+{
+    return !ws2811LedDataTransferInProgress;
+}
+
 static uint16_t dmaBufferOffset;
 static int16_t ledIndex;
 
@@ -176,7 +181,11 @@ void updateLEDDMABuffer(uint8_t componentValue)
  */
 void ws2811UpdateStrip(void)
 {
-    while(ws2811LedDataTransferInProgress);   // wait until previous transfer completes
+    static uint32_t waitCounter = 0;
+    // wait until previous transfer completes
+    while(ws2811LedDataTransferInProgress) {
+        waitCounter++;
+    }
 
     dmaBufferOffset = 0;                // reset buffer memory index
     ledIndex = 0;                    // reset led index

src/main/drivers/light_ws2811strip.h

@@ -44,6 +44,8 @@ void setLedColor(uint16_t index, const rgbColor24bpp_t *color);
 void setStripColor(const rgbColor24bpp_t *color);
 void setStripColors(const rgbColor24bpp_t *colors);
 
+bool isWS2811LedStripReady(void);
+
 extern const rgbColor24bpp_t black;
 extern const rgbColor24bpp_t white;
 extern const rgbColor24bpp_t orange;

src/main/mw.c

@@ -449,6 +449,10 @@ uint32_t nextBatteryFlashAt = 0;
 
 void updateLedStrip(void)
 {
+    if (!isWS2811LedStripReady()) {
+        return;
+    }
+
     uint32_t now = micros();
 
     bool indicatorFlashNow = (int32_t)(now - nextIndicatorFlashAt) >= 0L;