APM:Libraries: ChibiOS::Shared_DMA Class Reference

APM:Libraries

#include <shared_dma.h>

Collaboration diagram for ChibiOS::Shared_DMA:

Classes
struct	dma_lock

Public Member Functions
	FUNCTOR_TYPEDEF (dma_allocate_fn_t, void, Shared_DMA *)

	FUNCTOR_TYPEDEF (dma_deallocate_fn_t, void, Shared_DMA *)

	Shared_DMA (uint8_t stream_id1, uint8_t stream_id2, dma_allocate_fn_t allocate, dma_allocate_fn_t deallocate)

void	lock (void)

bool	lock_nonblock (void)

void	unlock (void)

void	unlock_from_IRQ (void)

void	unlock_from_lockzone (void)

void	unregister (void)

bool	has_contention (void) const

Static Public Member Functions
static void	init (void)

static void	lock_all (void)

Private Member Functions
void	lock_core (void)

Private Attributes
dma_allocate_fn_t	allocate

dma_allocate_fn_t	deallocate

uint8_t	stream_id1

uint8_t	stream_id2

bool	have_lock

bool	contention

Static Private Attributes
static struct ChibiOS::Shared_DMA::dma_lock	locks [SHARED_DMA_MAX_STREAM_ID]

Detailed Description

Definition at line 26 of file shared_dma.h.

Constructor & Destructor Documentation

◆ Shared_DMA()

Shared_DMA::Shared_DMA	(	uint8_t	stream_id1,
		uint8_t	stream_id2,
		dma_allocate_fn_t	allocate,
		dma_allocate_fn_t	deallocate
	)

Definition at line 35 of file shared_dma.cpp.

Member Function Documentation

◆ FUNCTOR_TYPEDEF() [1/2]

ChibiOS::Shared_DMA::FUNCTOR_TYPEDEF	(	dma_allocate_fn_t	,
		void	,
		Shared_DMA *
	)

◆ FUNCTOR_TYPEDEF() [2/2]

ChibiOS::Shared_DMA::FUNCTOR_TYPEDEF	(	dma_deallocate_fn_t	,
		void	,
		Shared_DMA *
	)

◆ has_contention()

bool ChibiOS::Shared_DMA::has_contention ( void ) const

inline

Definition at line 63 of file shared_dma.h.

Referenced by ChibiOS::UARTDriver::write_pending_bytes_DMA().

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◆ init()

void Shared_DMA::init ( void )

static

Definition at line 27 of file shared_dma.cpp.

Referenced by THD_FUNCTION().

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◆ lock()

void Shared_DMA::lock ( void )

Definition at line 92 of file shared_dma.cpp.

Referenced by ChibiOS::SPIDevice::acquire_bus(), ChibiOS::RCOutput::dshot_send(), ChibiOS::RCOutput::serial_write_bytes(), ChibiOS::RCOutput::setup_group_DMA(), and ChibiOS::I2CDevice::transfer().

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◆ lock_all()

void Shared_DMA::lock_all ( void )

static

Definition at line 182 of file shared_dma.cpp.

Referenced by has_contention(), and ChibiOS::Scheduler::reboot().

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◆ lock_core()

void Shared_DMA::lock_core ( void )

private

Definition at line 61 of file shared_dma.cpp.

Referenced by lock(), and lock_nonblock().

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◆ lock_nonblock()

bool Shared_DMA::lock_nonblock ( void )

Definition at line 104 of file shared_dma.cpp.

Referenced by ChibiOS::RCOutput::dshot_send(), and ChibiOS::UARTDriver::write_pending_bytes_DMA().

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◆ unlock()

void Shared_DMA::unlock ( void )

Definition at line 136 of file shared_dma.cpp.

Referenced by ChibiOS::SPIDevice::acquire_bus(), ChibiOS::RCOutput::serial_write_bytes(), ChibiOS::RCOutput::setup_group_DMA(), and ChibiOS::I2CDevice::transfer().

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◆ unlock_from_IRQ()

void Shared_DMA::unlock_from_IRQ ( void )

Definition at line 164 of file shared_dma.cpp.

Referenced by ChibiOS::RCOutput::dma_irq_callback(), and ChibiOS::UARTDriver::tx_complete().

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◆ unlock_from_lockzone()

void Shared_DMA::unlock_from_lockzone ( void )

Definition at line 149 of file shared_dma.cpp.

Referenced by ChibiOS::UARTDriver::check_dma_tx_completion().

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◆ unregister()

void Shared_DMA::unregister ( void )

Definition at line 47 of file shared_dma.cpp.

Member Data Documentation

◆ allocate

dma_allocate_fn_t ChibiOS::Shared_DMA::allocate

private

Definition at line 69 of file shared_dma.h.

Referenced by lock_core(), and Shared_DMA().

◆ contention

bool ChibiOS::Shared_DMA::contention

private

Definition at line 77 of file shared_dma.h.

Referenced by has_contention(), and lock_nonblock().

◆ deallocate

dma_allocate_fn_t ChibiOS::Shared_DMA::deallocate

private

Definition at line 70 of file shared_dma.h.

Referenced by lock_core(), and Shared_DMA().

◆ have_lock

bool ChibiOS::Shared_DMA::have_lock

private

Definition at line 73 of file shared_dma.h.

Referenced by lock_core(), unlock(), unlock_from_IRQ(), and unlock_from_lockzone().

◆ locks

Shared_DMA::dma_lock Shared_DMA::locks

staticprivate

Definition at line 25 of file shared_dma.cpp.

Referenced by init(), lock(), lock_all(), lock_core(), lock_nonblock(), unlock(), unlock_from_IRQ(), unlock_from_lockzone(), and unregister().

◆ stream_id1

uint8_t ChibiOS::Shared_DMA::stream_id1

private

Definition at line 71 of file shared_dma.h.

Referenced by lock(), lock_core(), lock_nonblock(), Shared_DMA(), unlock(), unlock_from_IRQ(), unlock_from_lockzone(), and unregister().

◆ stream_id2

uint8_t ChibiOS::Shared_DMA::stream_id2

private

Definition at line 72 of file shared_dma.h.

Referenced by lock(), lock_core(), lock_nonblock(), Shared_DMA(), unlock(), unlock_from_IRQ(), unlock_from_lockzone(), and unregister().

The documentation for this class was generated from the following files:

libraries/AP_HAL_ChibiOS/shared_dma.h
libraries/AP_HAL_ChibiOS/shared_dma.cpp