Prvni ulozeni z chegewara githubu

libraries/Wire/examples/WireSlave/WireSlave.ino

@@ -0,0 +1,37 @@
+#include "Wire.h"
+
+#define I2C_DEV_ADDR 0x55
+
+uint32_t i = 0;
+
+void onRequest(){
+  Wire.print(i++);
+  Wire.print(" Packets.");
+  Serial.println("onRequest");
+}
+
+void onReceive(int len){
+  Serial.printf("onReceive[%d]: ", len);
+  while(Wire.available()){
+    Serial.write(Wire.read());
+  }
+  Serial.println();
+}
+
+void setup() {
+  Serial.begin(115200);
+  Serial.setDebugOutput(true);
+  Wire.onReceive(onReceive);
+  Wire.onRequest(onRequest);
+  Wire.begin((uint8_t)I2C_DEV_ADDR);
+
+#if CONFIG_IDF_TARGET_ESP32
+  char message[64];
+  snprintf(message, 64, "%u Packets.", i++);
+  Wire.slaveWrite((uint8_t *)message, strlen(message));
+#endif
+}
+
+void loop() {
+
+}