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stm32: add note about Output/OutputOpenDrain drop behavior

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Josh Junon 2023-08-06 05:58:38 +02:00
parent 766b5fc6f6
commit 7b3d7a3826
1 changed files with 8 additions and 0 deletions
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8
embassy-stm32/src/gpio.rs
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@ -351,6 +351,10 @@ impl From<Level> for bool {
} }
/// GPIO output driver. /// GPIO output driver.
///
/// Note that pins will **return to their floating state** when `Output` is dropped.
/// If pins should retain their state indefinitely, either keep ownership of the
/// `Output`, or pass it to [`core::mem::forget`].
pub struct Output<'d, T: Pin> { pub struct Output<'d, T: Pin> {
pub(crate) pin: Flex<'d, T>, pub(crate) pin: Flex<'d, T>,
} }
@ -418,6 +422,10 @@ impl<'d, T: Pin> Output<'d, T> {
} }
/// GPIO output open-drain driver. /// GPIO output open-drain driver.
///
/// Note that pins will **return to their floating state** when `OutputOpenDrain` is dropped.
/// If pins should retain their state indefinitely, either keep ownership of the
/// `OutputOpenDrain`, or pass it to [`core::mem::forget`].
pub struct OutputOpenDrain<'d, T: Pin> { pub struct OutputOpenDrain<'d, T: Pin> {
pub(crate) pin: Flex<'d, T>, pub(crate) pin: Flex<'d, T>,
} }