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подготовка к альфа-тестированию

libraries/Wire/examples/i2c_scanner/i2c_scanner.ino

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+// i2c_scanner
+#include <Wire.h>
+
+void setup() 
+{
+  Serial.begin(115200);
+  while (!Serial);
+  Serial.println("I2C scanner start");
+
+  Wire.begin();
+}
+
+void loop() 
+{
+  int devicesQty = 0;
+  Serial.println("Scanning...");
+
+  for (byte address = 1; address < 127; address++) 
+  {
+    // transmitting address to I2C bus
+    Wire.beginTransmission(address);
+    byte error = Wire.endTransmission();
+
+    // Wire.endTransmission() will return 0 only if an ACK is received
+    // from the subscriber with the current address
+
+    if (error == 0) 
+    {
+      Serial.print("Device found at address 0x");
+      if (address < 16)
+        Serial.print("0");
+      Serial.println(address, HEX);
+      devicesQty++;
+    } 
+    delayMicroseconds(1);
+  }
+
+  if (devicesQty == 0)
+    Serial.println("No device found");
+  else
+  {
+    Serial.print(devicesQty);
+    Serial.println(" devices found");
+  }
+
+  Serial.println();
+  delay(5000);
+}