usart_priv.c File Reference

#include "common/phal_G4/usart/usart_priv.h"

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Functions
static uint32_t	enterCritical (void)
static void	exitCritical (uint32_t previous_interrupt_mask)
USART_TypeDef *	PHAL_USART_priv_periph (PHAL_USART_Idx_t periph_idx)
	Get the peripheral instance for a slot (used by the interrupt handlers)
void	PHAL_USART_priv_configure (PHAL_USART_Idx_t periph_idx, uint32_t baud_rate, uint32_t clock_rate)
	Enable the clock, program 8N1 + baud, and enable the USART + TX-DMA interrupts.
void	PHAL_USART_priv_buildDma (PHAL_USART_Idx_t periph_idx, PHAL_DMA_Handle_t *tx_dma, PHAL_DMA_Handle_t *rx_dma)
	Fill the TX and RX DMA handles from the hardware map.
void	PHAL_USART_priv_startTx (USART_TypeDef *periph)
void	PHAL_USART_priv_finishTx (USART_TypeDef *periph)
	Acknowledge transmission-complete: disable TCIE and clear ISR.TC.
bool	PHAL_USART_priv_txCompleteActive (USART_TypeDef *periph)
void	PHAL_USART_priv_startRx (USART_TypeDef *periph)
	Enable the receiver and its DMA request line (CR1.RE, CR3.DMAR).
void	PHAL_USART_priv_stopRx (USART_TypeDef *periph)
	Disable the receiver and its DMA request line (CR1.RE, CR3.DMAR).
void	PHAL_USART_priv_flushRx (USART_TypeDef *periph)
	Discard anything sitting in RDR and clear IDLE plus every RX error flag.
bool	PHAL_USART_priv_idleActive (const USART_TypeDef *periph)
	return true if the IDLE-line flag is set (an RX frame just completed).
void	PHAL_USART_priv_clearIdle (USART_TypeDef *periph)
	Clear the IDLE flag alone (write-1-to-clear).
void	PHAL_USART_priv_enableIrq (PHAL_USART_Idx_t periph_idx)
	Enable the USART global interrupt (carries IDLE and TC)

Variables
static const PHAL_USART_HwMap_t	USART_MAP [NUM_USART]
static constexpr uint32_t	USART_PRIV_RX_FLAG_CLEAR_MSK

Function Documentation

enterCritical()

static uint32_t enterCritical ( void )

inlinestatic

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exitCritical()

static void exitCritical ( uint32_t previous_interrupt_mask )

inlinestatic

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PHAL_USART_priv_buildDma()

void PHAL_USART_priv_buildDma	(	PHAL_USART_Idx_t	periph_idx,
		PHAL_DMA_Handle_t *	tx_dma,
		PHAL_DMA_Handle_t *	rx_dma )

Fill the TX and RX DMA handles from the hardware map.

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PHAL_USART_priv_clearIdle()

void PHAL_USART_priv_clearIdle

(

USART_TypeDef *

periph

)

Clear the IDLE flag alone (write-1-to-clear).

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PHAL_USART_priv_configure()

void PHAL_USART_priv_configure	(	PHAL_USART_Idx_t	periph_idx,
		uint32_t	baud_rate,
		uint32_t	clock_rate )

Enable the clock, program 8N1 + baud, and enable the USART + TX-DMA interrupts.

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PHAL_USART_priv_enableIrq()

void PHAL_USART_priv_enableIrq

(

PHAL_USART_Idx_t

periph_idx

)

Enable the USART global interrupt (carries IDLE and TC)

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PHAL_USART_priv_finishTx()

void PHAL_USART_priv_finishTx

(

USART_TypeDef *

periph

)

Acknowledge transmission-complete: disable TCIE and clear ISR.TC.

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PHAL_USART_priv_flushRx()

void PHAL_USART_priv_flushRx

(

USART_TypeDef *

periph

)

Discard anything sitting in RDR and clear IDLE plus every RX error flag.

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PHAL_USART_priv_idleActive()

bool PHAL_USART_priv_idleActive

(

const USART_TypeDef *

periph

)

return true if the IDLE-line flag is set (an RX frame just completed).

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PHAL_USART_priv_periph()

USART_TypeDef * PHAL_USART_priv_periph

(

PHAL_USART_Idx_t

periph_idx

)

Get the peripheral instance for a slot (used by the interrupt handlers)

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PHAL_USART_priv_startRx()

void PHAL_USART_priv_startRx

(

USART_TypeDef *

periph

)

Enable the receiver and its DMA request line (CR1.RE, CR3.DMAR).

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PHAL_USART_priv_startTx()

void PHAL_USART_priv_startTx

(

USART_TypeDef *

periph

)

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PHAL_USART_priv_stopRx()

void PHAL_USART_priv_stopRx

(

USART_TypeDef *

periph

)

Disable the receiver and its DMA request line (CR1.RE, CR3.DMAR).

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PHAL_USART_priv_txCompleteActive()

bool PHAL_USART_priv_txCompleteActive

(

USART_TypeDef *

periph

)

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Variable Documentation

USART_MAP

const PHAL_USART_HwMap_t USART_MAP[NUM_USART]

static

USART_PRIV_RX_FLAG_CLEAR_MSK

uint32_t USART_PRIV_RX_FLAG_CLEAR_MSK

staticconstexpr

Initial value:

=
      USART_ICR_IDLECF | USART_ICR_ORECF | USART_ICR_NECF
    | USART_ICR_FECF | USART_ICR_PECF