2 new example programs

New examples UsesFastLED.ino and UsesObjectFLED.ino show difference between using FastLEDs with and without also loading ObjectFLED.h.
2025-02-01 22:30:21 -05:00
parent 05385e02a8
commit ea33deeab1
2 changed files with 153 additions and 0 deletions
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+/* ObjectFLED sample program showing how to use the FastLED built-in ObjectFLED DMA engine,
+without loading ObjectFLED.h.  5 LED strings are configured to show blue-cylon lights and
+display show() framerate based on 20 back-to-back calls. Tested with FastLED 3.9.11 & 3.9.13. 
+
+When using FastLED without ObjectFLED.h,  each string/pin is added seperately in setup(), and 
+show() displays all strings at once.  Strings can be of varying length, but you cannot show 
+strings independently.  Only default waveform timing is used. */
+//#define FASTLED_USES_OBJECTFLED       //not required for FastLED 3.9.12 and later
+#define FASTLED_OVERCLOCK 1.5
+#include<FastLED.h>
+
+#define PIX_PER_STR 32
+#define NUM_STR 5
+CRGB leds[NUM_STR][PIX_PER_STR];      //2D array for all strings, or use separate string arrays
+
+void setup() {
+  // pin# 0-4, each with it's own LED string and array row
+  FastLED.addLeds<WS2812, 0, RGB>(leds[0], PIX_PER_STR);
+  FastLED.addLeds<WS2812, 1, RGB>(leds[1], PIX_PER_STR);
+  FastLED.addLeds<WS2812, 17, GRB>(leds[2], PIX_PER_STR);
+  FastLED.addLeds<WS2812, 3, GRB>(leds[3], PIX_PER_STR);
+  FastLED.addLeds<WS2812, 4, GRB>(leds[4], PIX_PER_STR);
+  fill_solid(leds[0], NUM_STR * PIX_PER_STR, 0x0);    //blanks all strings
+  FastLED.setBrightness(10);
+
+  Serial.begin(100000);
+} //setup()
+
+int delayT = 30;
+void loop() {
+  //RIGHT blue-cylon pattern on all NUM_STR strings
+  for (uint x=0; x<PIX_PER_STR; x++) {
+    for (uint y=0; y<NUM_STR; y++) {
+      leds[y][x] = CRGB::Blue;
+    }
+    FastLED.show();
+    fadeToBlackBy(leds[0], NUM_STR * PIX_PER_STR, 32);
+    delay(delayT);
+  }
+
+  //LEFT blue-cylon pattern on all NUM_STR strings
+  for (int x=PIX_PER_STR-1; x>=0; x--) {
+    for (int y=NUM_STR-1; y>=0; y--) {
+      leds[y][x] = CRGB::Blue;
+    }
+    FastLED.show();
+    fadeToBlackBy(leds[0], NUM_STR * PIX_PER_STR, 32);
+    delay(delayT);
+  }
+
+  //speed test 20 show() calls
+  uint totalT, startT = micros();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+    FastLED.show();
+  totalT = micros() - startT;
+  Serial.printf("Uses FastLED Avg T of 20 :  %.1f uS  FPS:  %.1f\n", totalT / 20.0, 20.0 / totalT * 1000000);
+  while (Serial.read()==-1);
+} //loop()