Mark stuff unstable (#4293)

Author: bugadani

esp-hal/CHANGELOG.md

@@ -82,6 +82,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - RMT: `Channel::transmit_continuously` now takes an additional `LoopStop` argument. (#4260)
 - RMT: `LoopCount::Finite` and `ContinuousTxTransaction::is_tx_loopcount_interrupt_set` are only defined when the hardware supports it (all except ESP32). (#4260)
 - RMT: `Channel::transmit_continuously` now verifies that loop counts don't exceed the hardware limit (#4276)
+- `esp_hal::clock::{RtcFastClock, RtcSlowClock, RtcClock}` and `esp_hal::gpio::Event` have been marked unstable (#4293)
 
 ### Fixed
 

esp-hal/src/clock/mod.rs

@@ -299,6 +299,7 @@ impl Clock for ApbClock {
 /// RTC FAST_CLK frequency values
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 #[cfg_attr(feature = "defmt", derive(defmt::Format))]
+#[instability::unstable]
 pub enum RtcFastClock {
     /// Main XTAL, divided by 4
     #[cfg(not(any(esp32c6, esp32h2)))]
@@ -329,6 +330,7 @@ impl Clock for RtcFastClock {
 #[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 #[non_exhaustive]
+#[instability::unstable]
 pub enum RtcSlowClock {
     /// Internal slow RC oscillator
     RcSlow   = 0,
@@ -342,6 +344,7 @@ pub enum RtcSlowClock {
 #[cfg(any(esp32c6, esp32h2))]
 #[derive(Debug, Clone, Copy)]
 #[non_exhaustive]
+#[instability::unstable]
 pub enum RtcSlowClock {
     /// Select RC_SLOW_CLK as RTC_SLOW_CLK source
     RcSlow   = 0,
@@ -369,6 +372,7 @@ impl Clock for RtcSlowClock {
 }
 
 /// RTC Clocks.
+#[instability::unstable]
 pub struct RtcClock;
 
 /// RTC Watchdog Timer driver.
@@ -1043,6 +1047,7 @@ impl RtcClock {
 #[cfg_attr(feature = "defmt", derive(defmt::Format))]
 #[non_exhaustive]
 #[doc(hidden)]
+#[instability::unstable]
 pub struct Clocks {
     /// CPU clock frequency
     pub cpu_clock: Rate,

esp-hal/src/gpio/mod.rs

@@ -141,6 +141,7 @@ impl Drop for PinGuard {
 /// Event used to trigger interrupts.
 #[derive(Debug, Eq, PartialEq, Copy, Clone, Hash)]
 #[cfg_attr(feature = "defmt", derive(defmt::Format))]
+#[instability::unstable]
 pub enum Event {
     /// Interrupts trigger on rising pin edge.
     RisingEdge  = 1,