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+<code C main.cpp>
+#include <Arduino.h>
+#include "LSM6DSL.h"
+LSM6DSL imu;
+// Current label we’re streaming with each sample
+// 0 = idle, 1 = shake
+volatile uint8_t currentLabel = 0;
+// Timing
+const uint32_t SAMPLE_PERIOD_MS = 10; // ~100 Hz
+uint32_t lastSampleMs = 0;
+void handleSerialLabel() {
+    while (Serial.available()) {
+        char c = Serial.read();
+        if (c == 'i' || c == 'I') {
+            currentLabel = 0;
+            Serial.println("# label=IDLE(0)");
+        } else if (c == 's' || c == 'S') {
+            currentLabel = 1;
+            Serial.println("# label=SHAKE(1)");
+        }
+    }
+}
+void setup() {
+    Serial.begin(115200);
+    delay(2000);
+    Serial.println("# Hello shake!");
+    if (!imu.begin()) {
+        Serial.println("# ERROR: IMU init failed");
+        while (true) { delay(1000); }
+    }
+    Serial.println("# Sparrow shake dataset logger");
+    Serial.println("# Send 'i' for idle label 0, 's' for shake label 1");
+    Serial.println("# CSV: millis,ax_g,ay_g,az_g,label");
+}
+void loop() {
+    handleSerialLabel();
+    uint32_t now = millis();
+    if (now - lastSampleMs >= SAMPLE_PERIOD_MS) {
+        lastSampleMs = now;
+        float ax, ay, az;
+        if (imu.readAccelG(ax, ay, az)) {
+            Serial.print(now);
+            Serial.print(',');
+            Serial.print(ax, 6);
+            Serial.print(',');
+            Serial.print(ay, 6);
+            Serial.print(',');
+            Serial.print(az, 6);
+            Serial.print(',');
+            Serial.println(currentLabel);
+        }
+    }
+}
+</code>