Document external button. Add wifi_blinky.rs for easy beginners start.

1 files changed, 4 insertions, 1 deletions

diff --git a/examples/rp/src/bin/button.rs b/examples/rp/src/bin/button.rs
index c5422c616..edfb09cdb 100644
--- a/examples/rp/src/bin/button.rs
+++ b/examples/rp/src/bin/button.rs
@@ -9,9 +9,12 @@ use {defmt_rtt as _, panic_probe as _};
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
     let p = embassy_rp::init(Default::default());
-    let button = Input::new(p.PIN_28, Pull::Up);
     let mut led = Output::new(p.PIN_25, Level::Low);
 
+    // Use PIN_28, Pin34 on J0 for RP Pico, as a input.
+    // You need to ad your own button.
+    let button = Input::new(p.PIN_28, Pull::Up);
+
     loop {
         if button.is_high() {
             led.set_high();