stm32: more docs.

4 files changed, 9 insertions, 0 deletions

diff --git a/embassy-stm32/src/timer/complementary_pwm.rs b/embassy-stm32/src/timer/complementary_pwm.rs
index 6654366cd..e543a5b43 100644
--- a/embassy-stm32/src/timer/complementary_pwm.rs
+++ b/embassy-stm32/src/timer/complementary_pwm.rs
@@ -1,3 +1,5 @@
+//! PWM driver with complementary output support.
+
 use core::marker::PhantomData;
 
 use embassy_hal_internal::{into_ref, PeripheralRef};
diff --git a/embassy-stm32/src/timer/mod.rs b/embassy-stm32/src/timer/mod.rs
index 9f93c6425..42ef878f7 100644
--- a/embassy-stm32/src/timer/mod.rs
+++ b/embassy-stm32/src/timer/mod.rs
@@ -1,3 +1,5 @@
+//! Timers, PWM, quadrature decoder.
+
 pub mod complementary_pwm;
 pub mod qei;
 pub mod simple_pwm;
@@ -8,6 +10,7 @@ use crate::interrupt;
 use crate::rcc::RccPeripheral;
 use crate::time::Hertz;
 
+/// Low-level timer access.
 #[cfg(feature = "unstable-pac")]
 pub mod low_level {
     pub use super::sealed::*;
diff --git a/embassy-stm32/src/timer/qei.rs b/embassy-stm32/src/timer/qei.rs
index 01d028bf9..9f9379c20 100644
--- a/embassy-stm32/src/timer/qei.rs
+++ b/embassy-stm32/src/timer/qei.rs
@@ -1,3 +1,5 @@
+//! Quadrature decoder using a timer.
+
 use core::marker::PhantomData;
 
 use embassy_hal_internal::{into_ref, PeripheralRef};
diff --git a/embassy-stm32/src/timer/simple_pwm.rs b/embassy-stm32/src/timer/simple_pwm.rs
index 1cf0ad728..234bbaff0 100644
--- a/embassy-stm32/src/timer/simple_pwm.rs
+++ b/embassy-stm32/src/timer/simple_pwm.rs
@@ -1,3 +1,5 @@
+//! Simple PWM driver.
+
 use core::marker::PhantomData;
 
 use embassy_hal_internal::{into_ref, PeripheralRef};