From 413b394d317a87e7664d83bce83e832588d7448c Mon Sep 17 00:00:00 2001
From: kalkyl <henrik.alser@me.com>
Date: Fri, 3 Nov 2023 00:37:58 +0100
Subject: [PATCH 1/2] rp: Add PWM input example

---
 examples/rp/src/bin/pwm_input.rs | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 examples/rp/src/bin/pwm_input.rs

diff --git a/examples/rp/src/bin/pwm_input.rs b/examples/rp/src/bin/pwm_input.rs
new file mode 100644
index 00000000..794b28af
--- /dev/null
+++ b/examples/rp/src/bin/pwm_input.rs
@@ -0,0 +1,26 @@
+//! This example shows how to use the PWM module to measure the frequency of an input signal.
+
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_rp::pwm::{Config, InputMode, Pwm};
+use embassy_time::{Duration, Ticker};
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_rp::init(Default::default());
+
+    let mut cfg: Config = Default::default();
+    let mut pwm = Pwm::new_input(p.PWM_CH2, p.PIN_5, InputMode::RisingEdge, cfg);
+
+    let mut ticker = Ticker::every(Duration::from_secs(1));
+    loop {
+        info!("Input frequency: {} Hz", pwm.counter());
+        pwm.set_counter(0);
+        ticker.next().await;
+    }
+}

From 649f1a122ad16cbd05aa1b5f0afd65cf959e2b47 Mon Sep 17 00:00:00 2001
From: kalkyl <henrik.alser@me.com>
Date: Fri, 3 Nov 2023 00:41:16 +0100
Subject: [PATCH 2/2] Cleanup

---
 examples/rp/src/bin/pwm_input.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/examples/rp/src/bin/pwm_input.rs b/examples/rp/src/bin/pwm_input.rs
index 794b28af..0fc2e40c 100644
--- a/examples/rp/src/bin/pwm_input.rs
+++ b/examples/rp/src/bin/pwm_input.rs
@@ -14,8 +14,8 @@ use {defmt_rtt as _, panic_probe as _};
 async fn main(_spawner: Spawner) {
     let p = embassy_rp::init(Default::default());
 
-    let mut cfg: Config = Default::default();
-    let mut pwm = Pwm::new_input(p.PWM_CH2, p.PIN_5, InputMode::RisingEdge, cfg);
+    let cfg: Config = Default::default();
+    let pwm = Pwm::new_input(p.PWM_CH2, p.PIN_5, InputMode::RisingEdge, cfg);
 
     let mut ticker = Ticker::every(Duration::from_secs(1));
     loop {