Update README.md

README.md

@@ -3,3 +3,39 @@ Library crate that implements the communication with a k8056 relay card, written
 
 This library provides basic structs and enums that provide the specified ACSII instruction, needed to communicate with the K8056 8-CHANNEL RELAY CARD manufactured by Velleman
 To send the instructions to the relay card, a serial library like [serialport](https://crates.io/crates/serialport) is needed.
+
+Working example using serialport library
+```
+use serialport;
+use k8056::uart::{Command, Idx};
+use std::thread;
+use std::time::Duration;  
+
+fn main() {
+    let mut port = serialport::new("/dev/ttyUSB0", 2_400)
+        .timeout(Duration::from_millis(10))
+        .data_bits(serialport::DataBits::Eight)
+        .parity(serialport::Parity::None)
+        .stop_bits(serialport::StopBits::One)
+        .open()
+        .expect("Failed to open port");
+    // Just a bunch of Commands to show how to initialize them
+    let cmd = Command::Byte(0x1C);
+    let cmd = Command::Emergency;
+    let cmd = Command::Force;
+    let cmd = Command::Display;
+    let cmd = Command::Address(Idx::new(2));
+    port.write(&cmd.to_bytes(1)).expect("Write failed!");
+    for i in 1..9 {
+        let cmd = Command::Toggle(Idx::new(i));
+        port.write(&cmd.to_bytes(1)).expect("Write failed!");
+        thread::sleep(Duration::from_millis(1000));
+    }
+
+    for i in (1..9).rev() {
+        let cmd = Command::Toggle(Idx::new(i));
+        port.write(&cmd.to_bytes(1)).expect("Write failed!");
+        thread::sleep(Duration::from_millis(1000));
+    }
+}
+```