Struct HardwareSemaphoreChannel 

pub struct HardwareSemaphoreChannel<'a, T: Instance> { /* private fields */ }

Hardware semaphore channel

Implementations

impl<'a, T: Instance> HardwareSemaphoreChannel<'a, T>

pub async fn lock(&mut self, process_id: u8) -> HardwareSemaphoreMutex<'a, T>

Locks the semaphore. The 2-step lock procedure consists in a write to lock the semaphore, followed by a read to check if the lock has been successful, carried out from the HSEM_Rx register.

pub fn try_lock( &mut self, process_id: u8, ) -> Option<HardwareSemaphoreMutex<'a, T>>

Try to lock the semaphor The 2-step lock procedure consists in a write to lock the semaphore, followed by a read to check if the lock has been successful, carried out from the HSEM_Rx register.

pub fn two_step_lock(&mut self, process_id: u8) -> Result<(), HsemError>

Locks the semaphore. The 2-step lock procedure consists in a write to lock the semaphore, followed by a read to check if the lock has been successful, carried out from the HSEM_Rx register.

pub fn one_step_lock(&mut self) -> Result<(), HsemError>

Locks the semaphore. The 1-step procedure consists in a read to lock and check the semaphore in a single step, carried out from the HSEM_RLRx register.

pub fn unlock(&mut self, process_id: u8)

Unlocks the semaphore. Unlocking a semaphore is a protected process, to prevent accidental clearing by a AHB bus core ID or by a process not having the semaphore lock right.

pub const fn channel(&self) -> u8

Return the channel number