initial commit

libraries/FastLED/tests/sketch_runner_demo.cpp

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+// Standalone sketch runner demonstration
+// This shows how external applications can use the FastLED sketch runner interface
+
+#include <stdio.h>
+
+// Demo sketch implementation
+static int setup_call_count = 0;
+static int loop_call_count = 0;
+
+// Arduino-style functions that would be provided by user sketch
+void setup() {
+    setup_call_count++;
+    printf("SKETCH: setup() called (count: %d)\n", setup_call_count);
+    printf("SKETCH: Initializing FastLED configuration...\n");
+}
+
+void loop() {
+    loop_call_count++;
+    printf("SKETCH: loop() called (count: %d)\n", loop_call_count);
+    printf("SKETCH: Running LED animation frame %d\n", loop_call_count);
+}
+
+// Direct declarations for demo (avoiding DLL export complexity)
+extern "C" {
+    void sketch_setup();
+    void sketch_loop();
+}
+
+// Simple implementations that call the Arduino functions
+void sketch_setup() {
+    setup();
+}
+
+void sketch_loop() {
+    loop();
+}
+
+int main() {
+    printf("RUNNER: FastLED Sketch Runner Demo\n");
+    printf("RUNNER: ================================\n");
+    
+    // Initialize sketch (call setup once)
+    printf("RUNNER: Initializing sketch...\n");
+    sketch_setup();
+    printf("RUNNER: Sketch initialization complete\n");
+    printf("RUNNER: ================================\n");
+    
+    // Run sketch loop five times
+    printf("RUNNER: Running sketch loop 5 times...\n");
+    for (int i = 1; i <= 5; i++) {
+        printf("RUNNER: --- Loop iteration %d ---\n", i);
+        sketch_loop();
+    }
+    
+    printf("RUNNER: ================================\n");
+    printf("RUNNER: Execution complete\n");
+    printf("RUNNER: Final state:\n");
+    printf("RUNNER:   setup() called: %d times\n", setup_call_count);
+    printf("RUNNER:   loop() called: %d times\n", loop_call_count);
+    printf("RUNNER: ================================\n");
+    
+    return 0;
+}