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set_as_input_output() and set_as_output() : Have added comments and made functions public

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amugniere@gmail.com 2022-07-08 21:46:16 +02:00
parent 4e54d09ab1
commit 39702d7624
1 changed files with 16 additions and 3 deletions
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17
embassy-stm32/src/gpio.rs
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@ -68,8 +68,12 @@ impl<'d, T: Pin> Flex<'d, T> {
}); });
} }
/// Put the pin into output mode.
///
/// The pin level will be whatever was set before (or low by default). If you want it to begin
/// at a specific level, call `set_high`/`set_low` on the pin first.
#[inline] #[inline]
fn set_as_output(&mut self, speed: Speed) { pub fn set_as_output(&mut self, speed: Speed) {
critical_section::with(|_| unsafe { critical_section::with(|_| unsafe {
let r = self.pin.block(); let r = self.pin.block();
@ -92,8 +96,17 @@ impl<'d, T: Pin> Flex<'d, T> {
}); });
} }
/// Put the pin into input + output mode.
///
/// This is commonly used for "open drain" mode.
/// the hardware will drive the line low if you set it to low, and will leave it floating if you set
/// it to high, in which case you can read the input to figure out whether another device
/// is driving the line low.
///
/// The pin level will be whatever was set before (or low by default). If you want it to begin
/// at a specific level, call `set_high`/`set_low` on the pin first.
#[inline] #[inline]
fn set_as_input_output(&mut self,speed: Speed, pull : Pull) { pub fn set_as_input_output(&mut self,speed: Speed, pull : Pull) {
critical_section::with(|_| unsafe { critical_section::with(|_| unsafe {
let r = self.pin.block(); let r = self.pin.block();
let n = self.pin.pin() as usize; let n = self.pin.pin() as usize;