distortos::chip::anonymous_namespace{STM32-DMAv2-DmaChannel.cpp} Namespace Reference

Functions
uint8_t	getChannelShift (const uint8_t channelId)
	Gets channel shift for shared DMA registers (LISR, LISR, LIFCR and HIFCR). More...
uint32_t	modifyCr (const uint32_t cr, const DmaChannelPeripheral &dmaChannelPeripheral, const uint32_t clear, const uint32_t set)
	Modifies current value of CR register. More...
uint32_t	readIsr (const DmaPeripheral &dmaPeripheral, const uint8_t channelId)
	Reads current value of LISR or HISR register. More...
void	writeIfcr (const DmaPeripheral &dmaPeripheral, const uint8_t channelId, const uint32_t ifcr)
	Writes value to LIFCR or HIFCR register. More...

Variables
constexpr uint8_t	maxRequest {DMA_SxCR_CHSEL_Msk >> DMA_SxCR_CHSEL_Pos}
	maximum allowed value for request identifier More...
constexpr uint32_t	tcieHtieTeieDmeieEnFlags
	TCIE, HTIE, TEIE, DMEIE and EN flags of CR register. More...

Function Documentation

getChannelShift()

uint8_t distortos::chip::anonymous_namespace{STM32-DMAv2-DmaChannel.cpp}::getChannelShift

(

const uint8_t

channelId

)

Gets channel shift for shared DMA registers (LISR, LISR, LIFCR and HIFCR).

Parameters

[in]

channelId

is a DMA channel identifier

Returns

channel shift

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modifyCr()

uint32_t distortos::chip::anonymous_namespace{STM32-DMAv2-DmaChannel.cpp}::modifyCr	(	const uint32_t	cr,
		const DmaChannelPeripheral &	dmaChannelPeripheral,
		const uint32_t	clear,
		const uint32_t	set
	)

Modifies current value of CR register.

Parameters

[in]	cr	is the current value of CR register
[in]	dmaChannelPeripheral	is a reference to raw DMA channel peripheral
[in]	clear	is the bitmask of bits that should be cleared in CR register
[in]	set	is the bitmask of bits that should be set in CR register

Returns

value written to CR register

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readIsr()

uint32_t distortos::chip::anonymous_namespace{STM32-DMAv2-DmaChannel.cpp}::readIsr	(	const DmaPeripheral &	dmaPeripheral,
		const uint8_t	channelId
	)

Reads current value of LISR or HISR register.

Parameters

[in]	dmaPeripheral	is a reference to raw DMA peripheral
[in]	channelId	is a DMA channel identifier

Returns

current value of LISR or HISR register

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writeIfcr()

void distortos::chip::anonymous_namespace{STM32-DMAv2-DmaChannel.cpp}::writeIfcr	(	const DmaPeripheral &	dmaPeripheral,
		const uint8_t	channelId,
		const uint32_t	ifcr
	)

Writes value to LIFCR or HIFCR register.

Parameters

[in]	dmaPeripheral	is a reference to raw DMA peripheral
[in]	channelId	is a DMA channel identifier
[in]	ifcr	is the value that will be written to LIFCR or HIFCR register

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Variable Documentation

maxRequest

constexpr uint8_t distortos::chip::anonymous_namespace{STM32-DMAv2-DmaChannel.cpp}::maxRequest {DMA_SxCR_CHSEL_Msk >> DMA_SxCR_CHSEL_Pos}

maximum allowed value for request identifier

tcieHtieTeieDmeieEnFlags

constexpr uint32_t distortos::chip::anonymous_namespace{STM32-DMAv2-DmaChannel.cpp}::tcieHtieTeieDmeieEnFlags

Initial value:

{DMA_SxCR_TCIE | DMA_SxCR_HTIE | DMA_SxCR_TEIE | DMA_SxCR_DMEIE |
        DMA_SxCR_EN}

TCIE, HTIE, TEIE, DMEIE and EN flags of CR register.