Aded Internal Serial Port.

examples/Hello World/README.md

@@ -4,7 +4,7 @@
 
 1) Open Arduino IDE, create project and pste the following code:
 
-https://github.com/jsfraz/esp32-examples/blob/babe66bb216f46ae25eea57311abe4f44c718429/examples/Hello%20World/sketch/sketch.ino#L1-L8
+https://github.com/jsfraz/esp32-examples/blob/19d93d1fda92e05c4c6ff4420fcf878207474cf1/examples/Hello%20World/sketch/sketch.ino#L1-L8
 
 2) **Press and hold ESP32 Boot button** and click **Upload** in Arduino IDE. You can release the button when `Connecting...` text shows up in **Output**.
 

examples/Internal Serial Console/README.md

@@ -1,5 +1,21 @@
 # Internal Serial Console
 
+You can communicate with ESP32 serial interface USB cable.
+
+## From ESP32 to PC
+
+You can use the same code as in Hello World example:
+
+https://github.com/jsfraz/esp32-examples/blob/19d93d1fda92e05c4c6ff4420fcf878207474cf1/examples/Hello%20World/sketch/sketch.ino#L1-L8
+
+You can use **Tools > Serial Monitor** or any other serial client like [Putty](https://www.putty.org/) to read data from the serial port.
+
+## From PC TO ESP32
+
+TODO codeblock
+
+You can use **Arduino IDE Serial Monitor** using **Tools > Serial Monitor** or any other serial client like [Putty](https://www.putty.org/) to send data to the serial port.
+
 ## Sources
 
 - [ESP32 - Serial Monitor](https://esp32io.com/tutorials/esp32-serial-monitor)

examples/Internal Serial Console/sketch_pc_to_esp32/sketch_pc_to_esp32.ino

@@ -0,0 +1,12 @@
+void setup() {
+  Serial.begin(9600);
+}
+
+void loop() {
+  // Check if there is data comming
+  if (Serial.available()) {
+    // Read string until newline character
+    String str = Serial.readStringUntil('\n');
+    Serial.println("String: " + str);
+  }
+}