nRF5 UARTE device definition. More...

Data Structures
struct	UARTDeviceState
	nRF5 UART state, owned by the driver. More...

struct	UARTDevice
	nRF5 UART device. More...

Functions
void	uart_irq_handler (UARTDevice *dev)
	UART interrupt handler.

Detailed Description

nRF5 UARTE device definition.

Receive DMA uses a timer counting received bytes to find the DMA write position.

Data Structure Documentation

struct UARTDeviceState

nRF5 UART state, owned by the driver.

SF32LB UART state, owned by the driver.

QEMU UART state, owned by the driver.

POSIX UART state, owned by the driver.

Data Fields
const void *	dev	Back pointer to the device.
DMA_HandleTypeDef	hdma	HAL DMA handle for reception; the board sets the instance to enable DMA.
UART_HandleTypeDef	huart	HAL UART handle; the board sets the instance and line settings.
bool	initialized	Device initialized.
uint32_t	rx_cache_buffer[8]	UARTE receive cache buffer.
uint32_t	rx_cons_index	Index of the receive sub-buffer being consumed.
uint32_t	rx_cons_pos	Consumed bytes in the current receive sub-buffer.
uint8_t *	rx_dma_buffer	Receive DMA buffer, NULL when not receiving through DMA.
uint32_t	rx_dma_index	Index of the receive sub-buffer queued next to the UARTE. Next unprocessed byte in the receive DMA buffer.
uint32_t	rx_dma_length	Size of the receive DMA buffer in bytes.
bool	rx_dma_running	Receive DMA running; paused while the receive interrupt is disabled.
bool	rx_done_pending	Unused.
bool	rx_int_enabled	Receive interrupt enabled.
UARTRXInterruptHandler	rx_irq_handler	Receive handler.
uint32_t	rx_prod_index	Index of the receive sub-buffer being filled by DMA.
uint32_t	tx_cache_buffer[8]	UARTE transmit cache buffer.
bool	tx_int_enabled	Transmit interrupt enabled.
UARTTXInterruptHandler	tx_irq_handler	Transmit handler.

struct UARTDevice

nRF5 UART device.

SF32LB UART device.

QEMU UART device.

POSIX UART device.

Completes the UARTDevice type forward-declared by the board header.

Data Fields
uint32_t	base_addr	Register base address.
uint8_t	channel	Host end: 0 for the console, 1 for the QEMU serial protocol, 2 for Bluetooth HCI.
nrfx_timer_t	counter	Timer counting received bytes.
uint32_t	cts_gpio	CTS pin.
IRQn_Type	dma_irqn	Receive DMA interrupt.
bool	half_duplex	Half-duplex operation.
int	irqn	Interrupt number.
IRQn_Type	irqn	UART interrupt.
nrfx_uarte_t	periph	UARTE instance.
uint32_t	rts_gpio	RTS pin.
Pinmux	rx	RX pin.
uint32_t	rx_gpio	RX pin.
UARTDeviceState *	state	Driver state.
Pinmux	tx	TX pin.
uint32_t	tx_gpio	TX pin.

void uart_irq_handler ( UARTDevice * dev )

UART interrupt handler.

Called from the IRQ handler in the board file on nRF5, and connected with PBL_IRQ_CONNECT() in the board file on SF32LB and QEMU.

Parameters

dev Device.