Expose InputPin.is_interrupt_set in implementation of esp-hal::gpio::… (

#1839)

* Expose InputPin.is_interrupt_set in implementation of esp-hal::gpio::Input

* Move entry in changelog from changed to added

esp-hal/CHANGELOG.md

@@ -42,6 +42,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - uart: Make `rx_timeout` optional in Config struct (#1759)
 - Add interrupt related functions to `PeriodicTimer`/`OneShotTimer`, added `ErasedTimer` (#1753)
 - Added blocking `read_bytes` method to `Uart` and `UartRx` (#1784)
+- Add method to expose `InputPin::is_interrupt_set` in `Input<InputPin>` for use in interrupt handlers (#1829)
 
 ### Fixed
 

esp-hal/src/gpio/mod.rs

@@ -1727,6 +1727,12 @@ where
         self.pin.clear_interrupt(private::Internal);
     }
 
+    /// Checks if the interrupt status bit for this Pin is set
+    #[inline]
+    pub fn is_interrupt_set(&self) -> bool {
+        self.pin.is_interrupt_set(private::Internal)
+    }
+
     /// Enable as a wake-up source.
     ///
     /// This will unlisten for interrupts

examples/src/bin/gpio_interrupt.rs

@@ -73,6 +73,18 @@ fn handler() {
     #[cfg(not(any(feature = "esp32", feature = "esp32s2", feature = "esp32s3")))]
     esp_println::println!("GPIO Interrupt");
 
+    if critical_section::with(|cs| {
+        BUTTON
+            .borrow_ref_mut(cs)
+            .as_mut()
+            .unwrap()
+            .is_interrupt_set()
+    }) {
+        esp_println::println!("Button was the source of the interrupt");
+    } else {
+        esp_println::println!("Button was not the source of the interrupt");
+    }
+
     critical_section::with(|cs| {
         BUTTON
             .borrow_ref_mut(cs)