Struct ParlIoTx

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pub struct ParlIoTx<'d, Dm>where
    Dm: DriverMode,
{ /* private fields */ }

Available on crate feature unstable only.

Expand description

Parallel IO TX channel

§Stability

This API is marked as unstable and is only available when the unstable crate feature is enabled. This comes with no stability guarantees, and could be changed or removed at any time.

Implementations§

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impl<'d, Dm> ParlIoTx<'d, Dm>
where Dm: DriverMode,

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pub fn write<BUF>( self, number_of_bytes: usize, buffer: BUF, ) -> Result<ParlIoTxTransfer<'d, BUF, Dm>, (Error, Self, BUF)>
where BUF: DmaTxBuffer,

Performs a DMA write.

Returns a ParlIoTxTransfer that can be used to wait for the transfer to complete.

§Errors

Returns Error::MaxDmaTransferSizeExceeded when more than 65535 bytes are requested. Returns Error::DmaError when the DMA transfer cannot be prepared or started.

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pub fn apply_config(&mut self, config: &TxConfig) -> Result<(), ConfigError>

Changes the bus configuration.

§Errors

Returns ConfigError::UnreachableClockRate when the requested frequency cannot be reached.

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impl<'d> ParlIoTx<'d, Blocking>

DMA interrupt management for the TX driver.

These methods manage the DMA TX channel’s own interrupt, which is separate from the PARL_IO interrupt managed by ParlIo’s interrupt methods.

§Stability

This API is marked as unstable and is only available when the unstable crate feature is enabled. This comes with no stability guarantees, and could be changed or removed at any time.

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pub fn listen(&mut self, interrupts: impl Into<EnumSet<ParlIoTxInterrupt>>)

Listens for the given PARL_IO TX interrupt sources.

The handler serving these sources must have been registered via ParlIo::set_interrupt_handler.

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pub fn unlisten(&mut self, interrupts: impl Into<EnumSet<ParlIoTxInterrupt>>)

Stops listening for the given PARL_IO TX interrupt sources.

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pub fn interrupts(&mut self) -> EnumSet<ParlIoTxInterrupt>

Returns the asserted PARL_IO TX interrupt sources.

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pub fn clear_interrupts( &mut self, interrupts: impl Into<EnumSet<ParlIoTxInterrupt>>, )

Clears the given asserted PARL_IO TX interrupt sources.

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pub fn set_dma_interrupt_handler(&mut self, handler: InterruptHandler)

Registers an interrupt handler for the DMA TX channel used by this driver.

The handler services the sources enabled via Self::listen_dma. It fires on the channel’s own interrupt, which is separate from the PARL_IO interrupt used by ParlIo::set_interrupt_handler.

Binding the handler unlistens from and clears all DMA TX interrupt sources, so this function must be called before Self::listen_dma. It must also be called before Self::write, which consumes the driver.

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