Low-level driver for nrf24l01+ transceiver. More...

Detailed Description

Low-level driver for nrf24l01+ transceiver.

Files
file	nrf24l01p.h

file	nrf24l01p_settings.h
	Low-level driver for nrf24l01+ transceiver.

Data Structures
struct	nrf24l01p_t
	Structure that represents the hardware setup of the nrf24l01+ transceiver. More...

Enumerations
enum	nrf24l01p_aw_t { NRF24L01P_AW_3BYTE, NRF24L01P_AW_4BYTE, NRF24L01P_AW_5BYTE }
	Defines the address width of the nrf24l01+ transceiver. More...

enum	nrf24l01p_dr_t { NRF24L01P_DR_250KBS, NRF24L01P_DR_1MBS, NRF24L01P_DR_2MBS }
	Defines the RF datarate. More...

enum	nrf24l01p_pwr_t { NRF24L01P_PWR_N18DBM = 0, NRF24L01P_PWR_N12DBM, NRF24L01P_PWR_N6DBM, NRF24L01P_PWR_0DBM }
	Defines the RF power level. More...

enum	nrf24l01p_rx_pipe_t { NRF24L01P_PIPE0 = 0, NRF24L01P_PIPE1, NRF24L01P_PIPE2, NRF24L01P_PIPE3, NRF24L01P_PIPE4, NRF24L01P_PIPE5 }
	Defines the datapipe on which the receiver searches for packets. More...

enum	nrf24l01p_crc_t { NRF24L01P_CRC_1BYTE = 0, NRF24L01P_CRC_2BYTE }
	Defines the error detection encoding scheme for the nrf24l01p transceiver. More...

enum	nrf24l01p_retransmit_delay_t { NRF24L01P_RETR_250US = 0, NRF24L01P_RETR_500US, NRF24L01P_RETR_750US, NRF24L01P_RETR_1000US, NRF24L01P_RETR_1250US, NRF24L01P_RETR_1500US, NRF24L01P_RETR_1750US, NRF24L01P_RETR_2000US, NRF24L01P_RETR_2250US, NRF24L01P_RETR_2500US, NRF24L01P_RETR_2750US, NRF24L01P_RETR_3000US, NRF24L01P_RETR_3250US, NRF24L01P_RETR_3500US, NRF24L01P_RETR_3750US, NRF24L01P_RETR_4000US }
	Defines the automatic retransmission delay defined from end of transmission to start of next treansmission. More...

enum	nrf24l01p_rx_event_t { RCV_PKT_NRF24L01P = 0 }
	Defines states for the nrf24l01+ transceiver. More...

Functions
int	nrf24l01p_read_reg (const nrf24l01p_t dev, char reg, char answer)
	Read one register of the nrf24l01+ transceiver. More...

int	nrf24l01p_write_reg (const nrf24l01p_t *dev, char reg, char write)
	Write one register to the nrf24l01+ transceiver. More...

int	nrf24l01p_init (nrf24l01p_t *dev, spi_t spi, gpio_t ce, gpio_t csn, gpio_t irq)
	Initialize the nrf24l01+ transceiver. More...

int	nrf24l01p_on (const nrf24l01p_t *dev)
	Power on the nrf24l01+ transceiver. More...

int	nrf24l01p_off (const nrf24l01p_t *dev)
	Power off the nrf24l01+ transceiver. More...

void	nrf24l01p_transmit (const nrf24l01p_t *dev)
	Transmit payload laying in TX FIFO of the nrf24l01+ transceiver. More...

int	nrf24l01p_read_payload (const nrf24l01p_t dev, char answer, unsigned int size)
	Read payload from RX FIFO of the nrf24l01+ transceiver. More...

void	nrf24l01p_register (nrf24l01p_t dev, unsigned int pid)
	Register a given ID to the nrf24l01+ transceiver. More...

int	nrf24l01p_enable_dynamic_payload (const nrf24l01p_t *dev, nrf24l01p_rx_pipe_t pipe)
	Enable dynamic payload for the pipe on give nrf24l01+ transceiver. More...

int	nrf24l01p_enable_dynamic_ack (const nrf24l01p_t *dev)
	Enable dynamic ack for the nrf24l01+ transceiver. More...

int	nrf24l01p_unregister (nrf24l01p_t *dev, unsigned int pid)
	Unregister the nrf24l01+ transceiver from his ID. More...

void	nrf24l01p_get_id (const nrf24l01p_t dev, unsigned int pid)
	Get ID from the nrf24l01p transceiver. More...

void	nrf24l01p_start (const nrf24l01p_t *dev)
	Start searching packets while in RX mode. More...

void	nrf24l01p_stop (const nrf24l01p_t *dev)
	Stop searching packets while in RX mode. More...

int	nrf24l01p_preload (const nrf24l01p_t dev, char data, unsigned int size)
	Preload TX FIFO with payload to transmit. More...

int	nrf24l01p_set_channel (const nrf24l01p_t *dev, uint8_t chan)
	Set the RF channel for the nrf24l01+ transceiver. More...

int	nrf24l01p_set_address_width (const nrf24l01p_t *dev, nrf24l01p_aw_t aw)
	Set the address width for the nrf24l01+ transceiver. More...

int	nrf24l01p_set_payload_width (const nrf24l01p_t *dev, nrf24l01p_rx_pipe_t pipe, uint8_t width)
	Set the RX payload width for the nrf24l01+ transceiver. More...

int	nrf24l01p_set_tx_address (const nrf24l01p_t dev, const uint8_t saddr, unsigned int length)
	Set the TX address for the nrf24l01+ transceiver (byte array). More...

int	nrf24l01p_set_tx_address_long (const nrf24l01p_t *dev, uint64_t saddr, unsigned int length)
	Set the TX address for the nrf24l01+ transceiver (long int). More...

int	nrf24l01p_set_rx_address (const nrf24l01p_t dev, nrf24l01p_rx_pipe_t pipe, const uint8_t saddr, unsigned int length)
	Set the RX address for the nrf24l01+ transceiver (byte array). More...

int	nrf24l01p_set_rx_address_long (const nrf24l01p_t *dev, nrf24l01p_rx_pipe_t pipe, uint64_t saddr, unsigned int length)
	Set the RX address for the nrf24l01+ transceiver (long int). More...

uint64_t	nrf24l01p_get_tx_address_long (const nrf24l01p_t *dev)
	Get the TX address for the nrf24l01+ transceiver (long int). More...

uint64_t	nrf24l01p_get_rx_address_long (const nrf24l01p_t *dev, nrf24l01p_rx_pipe_t pipe)
	Get the RX address for the nrf24l01+ transceiver (long int). More...

int	nrf24l01p_set_datarate (const nrf24l01p_t *dev, nrf24l01p_dr_t dr)
	Get the TX address for the nrf24l01+ transceiver (long int). More...

int	nrf24l01p_get_status (const nrf24l01p_t *dev)
	Get the status (register) of the nrf24l01+ transceiver device. More...

int	nrf24l01p_set_power (const nrf24l01p_t *dev, int pwr)
	Set the transmit power for the nrf24l01+ transceiver device. More...

int	nrf24l01p_get_power (const nrf24l01p_t *dev)
	Get the transmit power for the nrf24l01+ transceiver device. More...

int	nrf24l01p_set_txmode (const nrf24l01p_t *dev)
	Set the nrf24l01+ into TX mode. More...

int	nrf24l01p_set_rxmode (const nrf24l01p_t *dev)
	Set the nrf24l01+ into RX mode. More...

int	nrf24l01p_reset_all_interrupts (const nrf24l01p_t *dev)
	Reset all interrupts on the nrf24l01+ transceiver. More...

int	nrf24l01p_reset_interrupts (const nrf24l01p_t *dev, char intrs)
	Reset interrupts on the nrf24l01+ transceiver. More...

int	nrf24l01p_mask_interrupt (const nrf24l01p_t *dev, char intr)
	Mask one interrupt on the nrf24l01+ transceiver. More...

int	nrf24l01p_unmask_interrupt (const nrf24l01p_t *dev, char intr)
	Unmask one interrupt on the nrf24l01+ transceiver. More...

int	nrf24l01p_enable_pipe (const nrf24l01p_t *dev, nrf24l01p_rx_pipe_t pipe)
	Enable RX datapipe on the nrf24l01+ transceiver. More...

int	nrf24l01p_disable_pipe (const nrf24l01p_t *dev, nrf24l01p_rx_pipe_t pipe)
	Disable RX datapipe on the nrf24l01+ transceiver. More...

int	nrf24l01p_disable_crc (const nrf24l01p_t *dev)
	Disable CRC error detection on the nrf24l01+ transceiver. More...

int	nrf24l01p_enable_crc (const nrf24l01p_t *dev, nrf24l01p_crc_t crc)
	Enable CRC error detection on the nrf24l01+ transceiver. More...

int	nrf24l01p_setup_auto_ack (const nrf24l01p_t *dev, nrf24l01p_rx_pipe_t pipe, nrf24l01p_retransmit_delay_t delay_retrans, char count_retrans)
	Setup and enable automatic ACK and retransmission on the nrf24l01+ transceiver. More...

int	nrf24l01p_disable_all_auto_ack (const nrf24l01p_t *dev)
	Disable automatic ACK on the nrf24l01+ transceiver. More...

int	nrf24l01p_flush_tx_fifo (const nrf24l01p_t *dev)
	Flush TX FIFO on the nrf24l01+ transceiver. More...

int	nrf24l01p_flush_rx_fifo (const nrf24l01p_t *dev)
	Flush RX FIFO on the nrf24l01+ transceiver. More...

void	nrf24l01p_rx_cb (void *arg)
	Callback that is called when interrupt occurs on interrupt pin from the nrf24l01+ transceiver. More...

Enumeration Type Documentation

◆ nrf24l01p_aw_t

enum nrf24l01p_aw_t

Defines the address width of the nrf24l01+ transceiver.

Enumerator
NRF24L01P_AW_3BYTE	address width is 3 Byte
NRF24L01P_AW_4BYTE	address width is 4 Byte
NRF24L01P_AW_5BYTE	address width is 5 Byte

Definition at line 49 of file nrf24l01p.h.

◆ nrf24l01p_crc_t

enum nrf24l01p_crc_t

Defines the error detection encoding scheme for the nrf24l01p transceiver.

Enumerator
NRF24L01P_CRC_1BYTE	encoding scheme generates 1 Byte redundancy
NRF24L01P_CRC_2BYTE	encoding scheme generates 2 Bytes redundancy

Definition at line 90 of file nrf24l01p.h.

◆ nrf24l01p_dr_t

enum nrf24l01p_dr_t

Defines the RF datarate.

Enumerator
NRF24L01P_DR_250KBS	datarate is 250 kbps
NRF24L01P_DR_1MBS	datarate is 1 Mbps
NRF24L01P_DR_2MBS	datarate is 2 Mbps

Definition at line 59 of file nrf24l01p.h.

◆ nrf24l01p_pwr_t

enum nrf24l01p_pwr_t

Defines the RF power level.

Enumerator
NRF24L01P_PWR_N18DBM	power is -18dBm
NRF24L01P_PWR_N12DBM	power is -12dBm
NRF24L01P_PWR_N6DBM	power is - 6dBm
NRF24L01P_PWR_0DBM	power is 0dBm

Definition at line 68 of file nrf24l01p.h.

◆ nrf24l01p_retransmit_delay_t

enum nrf24l01p_retransmit_delay_t

Defines the automatic retransmission delay defined from end of transmission to start of next treansmission.

Enumerator
NRF24L01P_RETR_250US	retransmit delay is 250us
NRF24L01P_RETR_500US	retransmit delay is 500us
NRF24L01P_RETR_750US	retransmit delay is 750us
NRF24L01P_RETR_1000US	retransmit delay is 1000us
NRF24L01P_RETR_1250US	retransmit delay is 1250us
NRF24L01P_RETR_1500US	retransmit delay is 1500us
NRF24L01P_RETR_1750US	retransmit delay is 1750us
NRF24L01P_RETR_2000US	retransmit delay is 2000us
NRF24L01P_RETR_2250US	retransmit delay is 2250us
NRF24L01P_RETR_2500US	retransmit delay is 2500us
NRF24L01P_RETR_2750US	retransmit delay is 2750us
NRF24L01P_RETR_3000US	retransmit delay is 3000us
NRF24L01P_RETR_3250US	retransmit delay is 3250us
NRF24L01P_RETR_3500US	retransmit delay is 3500us
NRF24L01P_RETR_3750US	retransmit delay is 3750us
NRF24L01P_RETR_4000US	retransmit delay is 4000us

Definition at line 99 of file nrf24l01p.h.

◆ nrf24l01p_rx_event_t

enum nrf24l01p_rx_event_t

Defines states for the nrf24l01+ transceiver.

Enumerator
RCV_PKT_NRF24L01P	transceiver received data

Definition at line 121 of file nrf24l01p.h.

◆ nrf24l01p_rx_pipe_t

enum nrf24l01p_rx_pipe_t

Defines the datapipe on which the receiver searches for packets.

Enumerator
NRF24L01P_PIPE0	RX pipe 0.
NRF24L01P_PIPE1	RX pipe 1.
NRF24L01P_PIPE2	RX pipe 2.
NRF24L01P_PIPE3	RX pipe 3.
NRF24L01P_PIPE4	RX pipe 4.
NRF24L01P_PIPE5	RX pipe 5.

Definition at line 78 of file nrf24l01p.h.

Function Documentation

◆ nrf24l01p_disable_all_auto_ack()

int nrf24l01p_disable_all_auto_ack ( const nrf24l01p_t * dev )

Disable automatic ACK on the nrf24l01+ transceiver.

Parameters

[in] dev Transceiver device to use.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_disable_crc()

int nrf24l01p_disable_crc ( const nrf24l01p_t * dev )

Disable CRC error detection on the nrf24l01+ transceiver.

Parameters

[in] dev Transceiver device to use.

Returns: 0.

◆ nrf24l01p_disable_pipe()

int nrf24l01p_disable_pipe	(	const nrf24l01p_t *	dev,
		nrf24l01p_rx_pipe_t	pipe
	)

Disable RX datapipe on the nrf24l01+ transceiver.

Parameters

[in]	dev	Transceiver device to use.
[in]	pipe	RX pipe to disable.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_enable_crc()

int nrf24l01p_enable_crc	(	const nrf24l01p_t *	dev,
		nrf24l01p_crc_t	crc
	)

Enable CRC error detection on the nrf24l01+ transceiver.

Parameters

[in]	dev	Transceiver device to use.
[in]	crc	Length of cyclic redundancy check (type nrf24l01p_crc_t).

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_enable_dynamic_ack()

int nrf24l01p_enable_dynamic_ack ( const nrf24l01p_t * dev )

Enable dynamic ack for the nrf24l01+ transceiver.

Parameters

[in] dev Transceiver device to use.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_enable_dynamic_payload()

int nrf24l01p_enable_dynamic_payload	(	const nrf24l01p_t *	dev,
		nrf24l01p_rx_pipe_t	pipe
	)

Enable dynamic payload for the pipe on give nrf24l01+ transceiver.

Parameters

[in]	dev	Transceiver device to use.
[in]	pipe	RX pipe for which dynamic payload is enabled

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_enable_pipe()

int nrf24l01p_enable_pipe	(	const nrf24l01p_t *	dev,
		nrf24l01p_rx_pipe_t	pipe
	)

Enable RX datapipe on the nrf24l01+ transceiver.

Parameters

[in]	dev	Transceiver device to use.
[in]	pipe	RX pipe to enable.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_flush_rx_fifo()

int nrf24l01p_flush_rx_fifo ( const nrf24l01p_t * dev )

Flush RX FIFO on the nrf24l01+ transceiver.

Parameters

[in] dev Transceiver device to use.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_flush_tx_fifo()

int nrf24l01p_flush_tx_fifo ( const nrf24l01p_t * dev )

Flush TX FIFO on the nrf24l01+ transceiver.

Parameters

[in] dev Transceiver device to use.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_get_id()

void nrf24l01p_get_id	(	const nrf24l01p_t *	dev,
		unsigned int *	pid
	)

Get ID from the nrf24l01p transceiver.

Parameters

[in]	dev	Transceiver device to use.
[in]	pid	Transceiver ID.

◆ nrf24l01p_get_power()

int nrf24l01p_get_power ( const nrf24l01p_t * dev )

Get the transmit power for the nrf24l01+ transceiver device.

Parameters

[in] dev Transceiver device to use.

Returns: TX power value of the nrf24l01+ transceiver.

◆ nrf24l01p_get_rx_address_long()

uint64_t nrf24l01p_get_rx_address_long	(	const nrf24l01p_t *	dev,
		nrf24l01p_rx_pipe_t	pipe
	)

Get the RX address for the nrf24l01+ transceiver (long int).

Parameters

[in]	dev	Transceiver device to use.
[in]	pipe	RX pipe to get the address from.

Returns: RX address of the nrf24l01+ transceiver.; -1 on error.

◆ nrf24l01p_get_status()

int nrf24l01p_get_status ( const nrf24l01p_t * dev )

Get the status (register) of the nrf24l01+ transceiver device.

Parameters

[in] dev Transceiver device to use.s of the.

Returns: Value of the status register.

◆ nrf24l01p_get_tx_address_long()

uint64_t nrf24l01p_get_tx_address_long ( const nrf24l01p_t * dev )

Get the TX address for the nrf24l01+ transceiver (long int).

Parameters

[in] dev Transceiver device to use.

Returns: TX address of the nrf24l01+ transceiver.; -1 on error.

◆ nrf24l01p_init()

int nrf24l01p_init	(	nrf24l01p_t *	dev,
		spi_t	spi,
		gpio_t	ce,
		gpio_t	csn,
		gpio_t	irq
	)

Initialize the nrf24l01+ transceiver.

@ note This function initializes the transceiver so that it is ready to use.

Parameters

[in]	dev	Transceiver device to use.
[in]	spi	SPI device to use.
[in]	ce	GPIO pin to use for chip enable.
[in]	csn	GPIO pin to use for chip select.
[in]	irq	GPIO pin to use for interrupt request.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_mask_interrupt()

int nrf24l01p_mask_interrupt	(	const nrf24l01p_t *	dev,
		char	intr
	)

Mask one interrupt on the nrf24l01+ transceiver.

Note: There are three interrupts on the nrf24l01+ which can be masked: "MASK_RX_DR", "MASK_TX_DS" and "MASK_MAX_RT". Theay are defined in "include/nrf24l01p_settings.h".

Parameters

[in]	dev	Transceiver device to use.
[in]	intr	Transceiver device to use.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_off()

int nrf24l01p_off ( const nrf24l01p_t * dev )

Power off the nrf24l01+ transceiver.

Parameters

[in] dev Transceiver device to use.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_on()

int nrf24l01p_on ( const nrf24l01p_t * dev )

Power on the nrf24l01+ transceiver.

Parameters

[in] dev Transceiver device to use.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_preload()

int nrf24l01p_preload	(	const nrf24l01p_t *	dev,
		char *	data,
		unsigned int	size
	)

Preload TX FIFO with payload to transmit.

Parameters

[in]	dev	Transceiver device to use.
[in]	data	Buffer to preload.
[in]	size	Number of bytes in buffer. For nrf24l01+ e.g. 32

Returns: Number of bytes that were transferred.; -1 on error.

◆ nrf24l01p_read_payload()

int nrf24l01p_read_payload	(	const nrf24l01p_t *	dev,
		char *	answer,
		unsigned int	size
	)

Read payload from RX FIFO of the nrf24l01+ transceiver.

Parameters

[in]	dev	Transceiver device to use.
[in]	answer	Buffer to receive bytes to.
[in]	size	Number of bytes to transfer. For nrf24l01+ in general 32.

Returns: Number of bytes that were transferred.; -1 on error.

◆ nrf24l01p_read_reg()

int nrf24l01p_read_reg	(	const nrf24l01p_t *	dev,
		char	reg,
		char *	answer
	)

Read one register of the nrf24l01+ transceiver.

Parameters

[in]	dev	Transceiver device to use.
[in]	reg	Register address to read from.
[in]	answer	Byte to read.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_register()

void nrf24l01p_register	(	nrf24l01p_t *	dev,
		unsigned int *	pid
	)

Register a given ID to the nrf24l01+ transceiver.

Parameters

[in]	dev	Transceiver device to use.
[in]	pid	ID to register.

◆ nrf24l01p_reset_all_interrupts()

int nrf24l01p_reset_all_interrupts ( const nrf24l01p_t * dev )

Reset all interrupts on the nrf24l01+ transceiver.

Parameters

[in] dev Transceiver device to use.

Returns: 1 on success.; -1 on error.

◆ nrf24l01p_reset_interrupts()

int nrf24l01p_reset_interrupts	(	const nrf24l01p_t *	dev,
		char	intrs
	)

Reset interrupts on the nrf24l01+ transceiver.

Parameters

[in]	dev	Transceiver device to use.
[in]	intrs	Interrupt mask to reset

Returns: 1 on success.; -1 on error.

◆ nrf24l01p_rx_cb()

void nrf24l01p_rx_cb ( void * arg )

Callback that is called when interrupt occurs on interrupt pin from the nrf24l01+ transceiver.

Parameters

[in] arg Used to pass transceiver device "dev".

◆ nrf24l01p_set_address_width()

int nrf24l01p_set_address_width	(	const nrf24l01p_t *	dev,
		nrf24l01p_aw_t	aw
	)

Set the address width for the nrf24l01+ transceiver.

Parameters

[in]	dev	Transceiver device to use.
[in]	aw	Address width (type nrf24l01p_aw_t).

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_set_channel()

int nrf24l01p_set_channel	(	const nrf24l01p_t *	dev,
		uint8_t	chan
	)

Set the RF channel for the nrf24l01+ transceiver.

Note: To ensure non-overlapping channels in 2Mbps mode, don't use directly neighbouring channels in this mode.

Parameters

[in]	dev	Transceiver device to use.
[in]	chan	Buffer to preload.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_set_datarate()

int nrf24l01p_set_datarate	(	const nrf24l01p_t *	dev,
		nrf24l01p_dr_t	dr
	)

Get the TX address for the nrf24l01+ transceiver (long int).

Note: If you chose 2Mbps you should not allocate directly neighboring RF channels.

Parameters

[in]	dev	Transceiver device to use.
[in]	dr	Datarate (of type nrf24l01p_dr_t).

Returns: 1 on success.; -1 on error.

◆ nrf24l01p_set_payload_width()

int nrf24l01p_set_payload_width	(	const nrf24l01p_t *	dev,
		nrf24l01p_rx_pipe_t	pipe,
		uint8_t	width
	)

Set the RX payload width for the nrf24l01+ transceiver.

@ note This function sets the payload width for one packet. If the maximum of 32 bytes is exeeded, this value is set to 32.

Parameters

[in]	dev	Transceiver device to use.
[in]	pipe	RX pipe to set the payload width.
[in]	width	Number of bytes per packet in RX payload.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_set_power()

int nrf24l01p_set_power	(	const nrf24l01p_t *	dev,
		int	pwr
	)

Set the transmit power for the nrf24l01+ transceiver device.

Note: This function rounds the input values to the nearest possible setting.

Parameters

[in]	dev	Transceiver device to use.
[in]	pwr	TX power for the nrf24l01p transceiver.

Returns: 1 on success.; -1 on error.

◆ nrf24l01p_set_rx_address()

int nrf24l01p_set_rx_address	(	const nrf24l01p_t *	dev,
		nrf24l01p_rx_pipe_t	pipe,
		const uint8_t *	saddr,
		unsigned int	length
	)

Set the RX address for the nrf24l01+ transceiver (byte array).

Note: You can either use this function and give it a pointer to a byte array which holds the address to set, or use "nrf24l01p_set_rx_address_long" which requires a uint64_t which holds the address in the LSBs.

Parameters

[in]	dev	Transceiver device to use.
[in]	pipe	RX pipe to set the address.
[in]	saddr	Byte array which holds the RX address.
[in]	length	Number of bytes in address array.

Returns: Address length on success.; -1 on error.

◆ nrf24l01p_set_rx_address_long()

int nrf24l01p_set_rx_address_long	(	const nrf24l01p_t *	dev,
		nrf24l01p_rx_pipe_t	pipe,
		uint64_t	saddr,
		unsigned int	length
	)

Set the RX address for the nrf24l01+ transceiver (long int).

Parameters

[in]	dev	Transceiver device to use.
[in]	pipe	RX pipe to set the address.
[in]	saddr	Long integer which holds the RX address in LSBs.
[in]	length	Number of relevant bytes in uint64_t.

Returns: Address length on success.; -1 on error.

◆ nrf24l01p_set_rxmode()

int nrf24l01p_set_rxmode ( const nrf24l01p_t * dev )

Set the nrf24l01+ into RX mode.

Parameters

[in] dev Transceiver device to use.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_set_tx_address()

int nrf24l01p_set_tx_address	(	const nrf24l01p_t *	dev,
		const uint8_t *	saddr,
		unsigned int	length
	)

Set the TX address for the nrf24l01+ transceiver (byte array).

Note: You can either use this function and give it a pointer to a byte array which holds the address to set, or use "nrf24l01p_set_tx_address_long" which requires a uint64_t which holds the address in the LSBs.

Parameters

[in]	dev	Transceiver device to use.
[in]	saddr	Byte array which holds the TX address.
[in]	length	Number of bytes in address array.

Returns: Address length on success.; -1 on error.

◆ nrf24l01p_set_tx_address_long()

int nrf24l01p_set_tx_address_long	(	const nrf24l01p_t *	dev,
		uint64_t	saddr,
		unsigned int	length
	)

Set the TX address for the nrf24l01+ transceiver (long int).

Parameters

[in]	dev	Transceiver device to use.
[in]	saddr	Long integer which holds the TX address in LSBs.
[in]	length	Number of relevant bytes in uint64_t.

Returns: Address length on success.; -1 on error.

◆ nrf24l01p_set_txmode()

int nrf24l01p_set_txmode ( const nrf24l01p_t * dev )

Set the nrf24l01+ into TX mode.

Parameters

[in] dev Transceiver device to use.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_setup_auto_ack()

int nrf24l01p_setup_auto_ack	(	const nrf24l01p_t *	dev,
		nrf24l01p_rx_pipe_t	pipe,
		nrf24l01p_retransmit_delay_t	delay_retrans,
		char	count_retrans
	)

Setup and enable automatic ACK and retransmission on the nrf24l01+ transceiver.

Note: This function enables automatic acknowledgement for a given RX data pipe and also sets up the mautomatic retransmission behavior.

Parameters

[in]	dev	Transceiver device to use.
[in]	pipe	RX pipe to setup auto ack.
[in]	delay_retrans	Automatic retransmission delay (type nrf24l01p_retransmit_delay_t)
[in]	count_retrans	Auto retransmit count.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_start()

void nrf24l01p_start ( const nrf24l01p_t * dev )

Start searching packets while in RX mode.

Parameters

[in] dev Transceiver device to use.

◆ nrf24l01p_stop()

void nrf24l01p_stop ( const nrf24l01p_t * dev )

Stop searching packets while in RX mode.

Parameters

[in] dev Transceiver device to use.

◆ nrf24l01p_transmit()

void nrf24l01p_transmit ( const nrf24l01p_t * dev )

Transmit payload laying in TX FIFO of the nrf24l01+ transceiver.

Parameters

[in] dev Transceiver device to use.

◆ nrf24l01p_unmask_interrupt()

int nrf24l01p_unmask_interrupt	(	const nrf24l01p_t *	dev,
		char	intr
	)

Unmask one interrupt on the nrf24l01+ transceiver.

Note: There are three interrupts on the nrf24l01+ which can be unmasked: "MASK_RX_DR", "MASK_TX_DS" and "MASK_MAX_RT". Theay are defined in "include/nrf24l01p_settings.h".

Parameters

[in]	dev	Transceiver device to use.
[in]	intr	Transceiver device to use.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_unregister()

int nrf24l01p_unregister	(	nrf24l01p_t *	dev,
		unsigned int	pid
	)

Unregister the nrf24l01+ transceiver from his ID.

Parameters

[in]	dev	Transceiver device to use.
[in]	pid	Actual ID to unregister.

Returns: 0 on success.; -1 on error.

◆ nrf24l01p_write_reg()

int nrf24l01p_write_reg	(	const nrf24l01p_t *	dev,
		char	reg,
		char	write
	)

Write one register to the nrf24l01+ transceiver.

Parameters

[in]	dev	Transceiver device to use.
[in]	reg	Register address to write to.
[in]	write	Byte to write.

Returns: 0 on success.; -1 on error.

Detailed Description

Files

Data Structures

Enumerations

Functions

Enumeration Type Documentation

◆ nrf24l01p_aw_t

◆ nrf24l01p_crc_t

◆ nrf24l01p_dr_t

◆ nrf24l01p_pwr_t

◆ nrf24l01p_retransmit_delay_t

◆ nrf24l01p_rx_event_t

◆ nrf24l01p_rx_pipe_t

Function Documentation

◆ nrf24l01p_disable_all_auto_ack()

◆ nrf24l01p_disable_crc()

◆ nrf24l01p_disable_pipe()

◆ nrf24l01p_enable_crc()

◆ nrf24l01p_enable_dynamic_ack()

◆ nrf24l01p_enable_dynamic_payload()

◆ nrf24l01p_enable_pipe()

◆ nrf24l01p_flush_rx_fifo()

◆ nrf24l01p_flush_tx_fifo()

◆ nrf24l01p_get_id()

◆ nrf24l01p_get_power()

◆ nrf24l01p_get_rx_address_long()

◆ nrf24l01p_get_status()

◆ nrf24l01p_get_tx_address_long()

◆ nrf24l01p_init()

◆ nrf24l01p_mask_interrupt()

◆ nrf24l01p_off()

◆ nrf24l01p_on()

◆ nrf24l01p_preload()

◆ nrf24l01p_read_payload()

◆ nrf24l01p_read_reg()

◆ nrf24l01p_register()

◆ nrf24l01p_reset_all_interrupts()

◆ nrf24l01p_reset_interrupts()

◆ nrf24l01p_rx_cb()

◆ nrf24l01p_set_address_width()

◆ nrf24l01p_set_channel()

◆ nrf24l01p_set_datarate()

◆ nrf24l01p_set_payload_width()

◆ nrf24l01p_set_power()

◆ nrf24l01p_set_rx_address()

◆ nrf24l01p_set_rx_address_long()

◆ nrf24l01p_set_rxmode()

◆ nrf24l01p_set_tx_address()

◆ nrf24l01p_set_tx_address_long()

◆ nrf24l01p_set_txmode()

◆ nrf24l01p_setup_auto_ack()

◆ nrf24l01p_start()

◆ nrf24l01p_stop()

◆ nrf24l01p_transmit()

◆ nrf24l01p_unmask_interrupt()

◆ nrf24l01p_unregister()

◆ nrf24l01p_write_reg()