This module contains the driver for the NRF24L01+ (NG) 2.4 GHz transceiver. More...

Detailed Description

This module contains the driver for the NRF24L01+ (NG) 2.4 GHz transceiver.

Files
file	nrf24l01p_ng.h
	Public interface for NRF24L01+ (NG) devices.

file	gnrc_netif_nrf24l01p_ng.h
	NRF24L01+ (NG) adaptation for Network interface API.

file	nrf24l01p_ng_communication.h
	Functions to communicate with the NRF24L01+ (NG) transceiver via SPI.

file	nrf24l01p_ng_constants.h
	Constants from the datasheet of the NRF24L01+ (NG) transceiver.

file	nrf24l01p_ng_diagnostics.h
	Functions to print NRF24L01+ (NG) debug information.

file	nrf24l01p_ng_netdev.h
	Netdev driver interface for NRF24L01+ (NG) device driver.

file	nrf24l01p_ng_params.h
	Board specific configuration for all NRF24L01+ (NG) devices.

file	nrf24l01p_ng_registers.h
	Register map of NRF24L01+ (NG) devices.

file	nrf24l01p_ng_states.h
	Operation states of NRF24L01+ (NG) devices.

Data Structures
struct	nrf24l01p_ng_cfg_t
	Struct that holds all active configuration values. More...

struct	nrf24l01p_ng_params_t
	Struct of NRF24L01+ initialization parameters. More...

struct	nrf24l01p_ng
	NRF24L01+ device struct. More...

Macros
#define	NRF24L01P_NG_MIN_ADDR_WIDTH (3)
	Minimum width of a NRF24L01+ layer-2 address.

#define	NRF24L01P_NG_MAX_ADDR_WIDTH (5)
	Maximum width of a NRF24L01+ layer-2 address.

#define	NRF24L01P_NG_ADDR_WIDTH NRF24L01P_NG_MAX_ADDR_WIDTH
	Pass the compiler a definition of NRF24L01P_NG_ADDR_WIDTH to configure the layer-2 address width of this transceiver.

#define	NRF24L01P_NG_BROADCAST_ADDR { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }
	Agreed layer-2 address to send broadcast frames to. More...

#define	NRF24L01P_NG_ADDR_P0(dev) ((dev)->arxaddr.rx_addr_long[NRF24L01P_NG_P0])
	Shortcut to access the address of pipe 0.

#define	NRF24L01P_NG_ADDR_P1(dev) ((dev)->arxaddr.rx_addr_long[NRF24L01P_NG_P1])
	Shortcut to access the address of pipe 1.

#define	NRF24L01P_NG_ADDR_PX_LSB(dev, pipe) ((dev)->arxaddr.rx_addr_short[(pipe) - 2])
	Shortcut to access the least significant byte of the addresses pipe 2, pipe 3, pipe 4 or pipe 5. More...

Functions
int	nrf24l01p_ng_setup (nrf24l01p_ng_t dev, const nrf24l01p_ng_params_t params, uint8_t index)
	Setup the NRF24L01+ driver, but perform no initialization. More...

int	nrf24l01p_ng_set_enable_pipe (nrf24l01p_ng_t *dev, nrf24l01p_ng_pipe_t pipe, bool enable)
	Enable or disable data pipe `pipe`. More...

int	nrf24l01p_ng_get_enable_pipe (nrf24l01p_ng_t dev, nrf24l01p_ng_pipe_t pipe, bool enable)
	Query if data pipe `pipe` is enabled. More...

int	nrf24l01p_ng_set_air_data_rate (nrf24l01p_ng_t *dev, nrf24l01p_ng_rfdr_t data_rate)
	Configure air data rate. More...

uint16_t	nrf24l01p_ng_get_air_data_rate (const nrf24l01p_ng_t dev, nrf24l01p_ng_rfdr_t data_rate)
	Get currently configured data rate. More...

int	nrf24l01p_ng_set_crc (nrf24l01p_ng_t *dev, nrf24l01p_ng_crc_t crc)
	Configure CRC length. More...

uint8_t	nrf24l01p_ng_get_crc (const nrf24l01p_ng_t dev, nrf24l01p_ng_crc_t crc)
	Get currently configured CRC length. More...

int	nrf24l01p_ng_set_tx_power (nrf24l01p_ng_t *dev, nrf24l01p_ng_tx_power_t power)
	Configure Tx trasceiver power. More...

int8_t	nrf24l01p_ng_get_tx_power (const nrf24l01p_ng_t dev, nrf24l01p_ng_tx_power_t power)
	Get currently configured Tx transceiver power. More...

int	nrf24l01p_ng_set_channel (nrf24l01p_ng_t *dev, uint8_t channel)
	Set transceiver channel. More...

uint8_t	nrf24l01p_ng_get_channel (const nrf24l01p_ng_t *dev)
	Get currently configured transceiver channel. More...

int	nrf24l01p_ng_set_rx_address (nrf24l01p_ng_t dev, const uint8_t addr, nrf24l01p_ng_pipe_t pipe)
	Set Rx address of a certain data pipe. More...

int	nrf24l01p_ng_get_rx_address (const nrf24l01p_ng_t dev, uint8_t addr, nrf24l01p_ng_pipe_t pipe)
	Get current Rx address of a certain data pipe. More...

int	nrf24l01p_ng_set_max_retransm (nrf24l01p_ng_t *dev, uint8_t max_rt)
	Configure maximum number of retransmissions for ESB. More...

uint8_t	nrf24l01p_ng_get_max_retransm (const nrf24l01p_ng_t *dev)
	Get currently configured number of maximum retransmissions for ESB. More...

int	nrf24l01p_ng_set_retransm_delay (nrf24l01p_ng_t *dev, nrf24l01p_ng_ard_t rt_delay)
	Set retransmission delay for ESB. More...

uint16_t	nrf24l01p_ng_get_retransm_delay (const nrf24l01p_ng_t dev, nrf24l01p_ng_ard_t rt_delay)
	Get retransmission delay for ESB. More...

int	nrf24l01p_ng_set_state (nrf24l01p_ng_t *dev, nrf24l01p_ng_state_t state)
	Put device into sleep mode(NRF24L01P_NG_STATE_POWER_DOWN), standby mode (NRF24L01P_NG_STATE_STANDBY_1), or Rx mode (NRF24L01P_NG_STATE_RX_MODE) More...

nrf24l01p_ng_state_t	nrf24l01p_ng_get_state (const nrf24l01p_ng_t *dev)
	Get current device state. More...

void	nrf24l01p_ng_eui_get (const netdev_t dev, uint8_t eui)
	Retrieve a unique layer-2 address for an nrf24l01p_ng instance. More...

Macro Definition Documentation

◆ NRF24L01P_NG_ADDR_PX_LSB

#define NRF24L01P_NG_ADDR_PX_LSB	(	dev,
		pipe
	)	((dev)->arxaddr.rx_addr_short[(pipe) - 2])

Shortcut to access the least significant byte of the addresses pipe 2, pipe 3, pipe 4 or pipe 5.

The other bytes are shared with the address of pipe 1

Definition at line 84 of file nrf24l01p_ng.h.

◆ NRF24L01P_NG_BROADCAST_ADDR

#define NRF24L01P_NG_BROADCAST_ADDR { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }

Agreed layer-2 address to send broadcast frames to.

The broadcast address will be assigned to pipe 0.

Definition at line 66 of file nrf24l01p_ng.h.

Function Documentation

◆ nrf24l01p_ng_eui_get()

void nrf24l01p_ng_eui_get	(	const netdev_t *	dev,
		uint8_t *	eui
	)

Retrieve a unique layer-2 address for an nrf24l01p_ng instance.

Note: This function has attribute((weak)) so you can override this, e.g. to construct an address. By default luid_get_lb is used.

Parameters

[in]	dev	The device descriptor of the transceiver
[out]	eui	Destination to write the address to

◆ nrf24l01p_ng_get_air_data_rate()

uint16_t nrf24l01p_ng_get_air_data_rate	(	const nrf24l01p_ng_t *	dev,
		nrf24l01p_ng_rfdr_t *	data_rate
	)

Get currently configured data rate.

Parameters

[in]	dev	NRF24L01+ device handle
[out]	data_rate	Configuration data rate value (may be NULL)

Returns: Data rate in [kbit/s]

◆ nrf24l01p_ng_get_channel()

uint8_t nrf24l01p_ng_get_channel ( const nrf24l01p_ng_t * dev )

Get currently configured transceiver channel.

Parameters

[in] dev NRF24L01+ device handle

Returns: Transceiver channel

◆ nrf24l01p_ng_get_crc()

uint8_t nrf24l01p_ng_get_crc	(	const nrf24l01p_ng_t *	dev,
		nrf24l01p_ng_crc_t *	crc
	)

Get currently configured CRC length.

Parameters

[in]	dev	NRF24L01+ device handle
[out]	crc	Configuration crc value (may be NULL)

Returns: Current CRC length

◆ nrf24l01p_ng_get_enable_pipe()

int nrf24l01p_ng_get_enable_pipe	(	nrf24l01p_ng_t *	dev,
		nrf24l01p_ng_pipe_t	pipe,
		bool *	enable
	)

Query if data pipe pipe is enabled.

Parameters

[in]	dev	NRF24L01+ device handle
[in]	pipe	Pipe index
[out]	enable	If pipe is enabled or disabled

Return values

0	Success
-EINVAL	Bad pipe index

◆ nrf24l01p_ng_get_max_retransm()

uint8_t nrf24l01p_ng_get_max_retransm ( const nrf24l01p_ng_t * dev )

Get currently configured number of maximum retransmissions for ESB.

Parameters

[in] dev NRF24L01+ device handle

Returns: Maximum number of retransmissions

◆ nrf24l01p_ng_get_retransm_delay()

uint16_t nrf24l01p_ng_get_retransm_delay	(	const nrf24l01p_ng_t *	dev,
		nrf24l01p_ng_ard_t *	rt_delay
	)

Get retransmission delay for ESB.

Parameters

[in]	dev	NRF24L01+ device handle
[out]	rt_delay	Configuration retransmission delay value

Returns: Retransmission delay in [us]

◆ nrf24l01p_ng_get_rx_address()

int nrf24l01p_ng_get_rx_address	(	const nrf24l01p_ng_t *	dev,
		uint8_t *	addr,
		nrf24l01p_ng_pipe_t	pipe
	)

Get current Rx address of a certain data pipe.

addr must be at least NRF24L01P_NG_ADDR_WIDTH wide.

Parameters

[in]	dev	NRF24L01+ device handle
[out]	addr	Rx address
[in]	pipe	Pipe index

Returns: Address width

Return values

-EINVAL Bad pipe index

◆ nrf24l01p_ng_get_state()

nrf24l01p_ng_state_t nrf24l01p_ng_get_state ( const nrf24l01p_ng_t * dev )

Get current device state.

Parameters

[in] dev NRf24L01+ device handle

Returns: Device state

◆ nrf24l01p_ng_get_tx_power()

int8_t nrf24l01p_ng_get_tx_power	(	const nrf24l01p_ng_t *	dev,
		nrf24l01p_ng_tx_power_t *	power
	)

Get currently configured Tx transceiver power.

Parameters

[in]	dev	NRF24L01+ device handle
[out]	power	Configuration Tx power value

Returns: Tx power in [dbm]

◆ nrf24l01p_ng_set_air_data_rate()

int nrf24l01p_ng_set_air_data_rate	(	nrf24l01p_ng_t *	dev,
		nrf24l01p_ng_rfdr_t	data_rate
	)

Configure air data rate.

Parameters

[in]	dev	NRF24L01+ device handle
[in]	data_rate	Data rate configuration value

Return values

0	Success
-EINVAL	Bad data rate value
-EAGAIN	Current state does not permit changing data rate

◆ nrf24l01p_ng_set_channel()

int nrf24l01p_ng_set_channel	(	nrf24l01p_ng_t *	dev,
		uint8_t	channel
	)

Set transceiver channel.

Parameters

[in]	dev	NRF24l01+ device handle
[in]	channel	Channel [0; 15]

Return values

0	Success
-EINVAL	Bad channel
-EAGAIN	Current state does not permit switching channel

◆ nrf24l01p_ng_set_crc()

int nrf24l01p_ng_set_crc	(	nrf24l01p_ng_t *	dev,
		nrf24l01p_ng_crc_t	crc
	)

Configure CRC length.

Parameters

[in]	dev	NRF24L01+ device handle
[in]	crc	Configuration CRC value

Return values

0	Success
-EINVAL	Bad CRC configuration value
-ENOTSUP	CRC length not supported
-EAGAIN	Current state does not permit changing CRC length

◆ nrf24l01p_ng_set_enable_pipe()

int nrf24l01p_ng_set_enable_pipe	(	nrf24l01p_ng_t *	dev,
		nrf24l01p_ng_pipe_t	pipe,
		bool	enable
	)

Enable or disable data pipe pipe.

     If @p pipe should be enabled, it is advised to
     set an address in advance.
     @see nrf24l01p_ng_set_rx_addr
     For Enhanced ShockBurst, auto ACK and dynamic
     payload length are enabled

Parameters

[in]	dev	NRF24L01+ device handle
[in]	pipe	Pipe index
[in]	enable	If pipe should be enabled or disabled

Return values

0	Success
-EINVAL	Bad pipe index

◆ nrf24l01p_ng_set_max_retransm()

int nrf24l01p_ng_set_max_retransm	(	nrf24l01p_ng_t *	dev,
		uint8_t	max_rt
	)

Configure maximum number of retransmissions for ESB.

Parameters

[in]	dev	NRF24L01+ device handle
[in]	max_rt	Number of maximum retransmissions [0; 15]

Return values

0	Success
-EINVAL	Unsupported number of retransmissions
-EAGAIN	Current state does not permit changing the maximum number of retransmissions

◆ nrf24l01p_ng_set_retransm_delay()

int nrf24l01p_ng_set_retransm_delay	(	nrf24l01p_ng_t *	dev,
		nrf24l01p_ng_ard_t	rt_delay
	)

Set retransmission delay for ESB.

Parameters

[in]	dev	NRF24L01+ device handle
[in]	rt_delay	Configuration retransmission delay value

Returns: 0; -EINVAL Bad retransmission delay value; -EAGAIN Current state does not permit changing retransmission delay

◆ nrf24l01p_ng_set_rx_address()

int nrf24l01p_ng_set_rx_address	(	nrf24l01p_ng_t *	dev,
		const uint8_t *	addr,
		nrf24l01p_ng_pipe_t	pipe
	)

Set Rx address of a certain data pipe.

If you want to set the address of pipe 2, 3, 4 or 5 you only set the LSB because the other bytes are equal to the address of pipe 1.

For pipe 0 and 1 NRF24L01P_NG_ADDR_WIGTH bytes are expected

Parameters

[in]	dev	NRF24L01+ device handle
[in]	addr	Rx address
[in]	pipe	Pipe index

Return values

0	Success
-EINVAL	Bad address length

Returns: -EAGAIN Current state does not permit changing Rx address

◆ nrf24l01p_ng_set_state()

int nrf24l01p_ng_set_state	(	nrf24l01p_ng_t *	dev,
		nrf24l01p_ng_state_t	state
	)

Put device into sleep mode(NRF24L01P_NG_STATE_POWER_DOWN), standby mode (NRF24L01P_NG_STATE_STANDBY_1), or Rx mode (NRF24L01P_NG_STATE_RX_MODE)

Parameters

[in]	dev	NRF24L01+ device handle
[in]	state	State

Returns: Old state

Return values

-EAGAIN	Device is currently not permitted to change state
-ENOTSUP	Device is not permitted to change state to `state`

◆ nrf24l01p_ng_set_tx_power()

int nrf24l01p_ng_set_tx_power	(	nrf24l01p_ng_t *	dev,
		nrf24l01p_ng_tx_power_t	power
	)

Configure Tx trasceiver power.

Parameters

[in]	dev	NRf24L01+ device handle
[in]	power	Configuration Tx power value

Return values

0	Success
-EINVAL	Bad Tx power configuration value
-EAGAIN	Current state does not permit changing Tx power

◆ nrf24l01p_ng_setup()

int nrf24l01p_ng_setup	(	nrf24l01p_ng_t *	dev,
		const nrf24l01p_ng_params_t *	params,
		uint8_t	index
	)

Setup the NRF24L01+ driver, but perform no initialization.

netdev_driver_t::init can be used after this call to initialize the transceiver.

Parameters

[in]	dev	NRF24L01+ device handle
[in]	params	Parameters of the device to setup
[in]	index	Index of `params` in a global parameter struct array. If initialized manually, pass a unique identifier instead.

Return values

0	Device successfully set up

Detailed Description

Files

Data Structures

Macros

Functions

Macro Definition Documentation

◆ NRF24L01P_NG_ADDR_PX_LSB

◆ NRF24L01P_NG_BROADCAST_ADDR

Function Documentation

◆ nrf24l01p_ng_eui_get()

◆ nrf24l01p_ng_get_air_data_rate()

◆ nrf24l01p_ng_get_channel()

◆ nrf24l01p_ng_get_crc()

◆ nrf24l01p_ng_get_enable_pipe()

◆ nrf24l01p_ng_get_max_retransm()

◆ nrf24l01p_ng_get_retransm_delay()

◆ nrf24l01p_ng_get_rx_address()

◆ nrf24l01p_ng_get_state()

◆ nrf24l01p_ng_get_tx_power()

◆ nrf24l01p_ng_set_air_data_rate()

◆ nrf24l01p_ng_set_channel()

◆ nrf24l01p_ng_set_crc()

◆ nrf24l01p_ng_set_enable_pipe()

◆ nrf24l01p_ng_set_max_retransm()

◆ nrf24l01p_ng_set_retransm_delay()

◆ nrf24l01p_ng_set_rx_address()

◆ nrf24l01p_ng_set_state()

◆ nrf24l01p_ng_set_tx_power()

◆ nrf24l01p_ng_setup()