Add wiring pi (for test and doc)

src/main.rs

@@ -8,6 +8,7 @@ extern crate core;
 use actix_web::{middleware, web, App, HttpServer};
 use actix_web::middleware::normalize::TrailingSlash;
 use env_logger::{Builder, Env};
+use wiringpi::pin::Value::High;
 
 mod db;
 mod handlers;
@@ -20,6 +21,12 @@ async fn main() -> std::io::Result<()> {
 
     Builder::from_env(Env::default().default_filter_or("info")).init();
 
+    let pi = wiringpi::setup();
+
+    //Use WiringPi pin 0 as output
+    let pin = pi.output_pin(0);
+    pin.digital_write(High);
+
     HttpServer::new(|| {
         App::new()
             .wrap(middleware::DefaultHeaders::new()