Base class for SX128x series. All derived classes for SX128x (e.g. SX1280 or SX1281) inherit from this base class. This class should not be instantiated directly from Arduino sketch, only from its derived classes. More...

#include <SX128x.h>

Inheritance diagram for SX128x:

Public Member Functions
	SX128x (Module *mod)
	Default constructor. More...

Module *	getMod ()

int16_t	begin (float freq=2400.0, float bw=812.5, uint8_t sf=9, uint8_t cr=7, uint8_t syncWord=RADIOLIB_SX128X_SYNC_WORD_PRIVATE, int8_t power=10, uint16_t preambleLength=12)
	Initialization method for LoRa modem. More...

int16_t	beginGFSK (float freq=2400.0, uint16_t br=800, float freqDev=400.0, int8_t power=10, uint16_t preambleLength=16)
	Initialization method for GFSK modem. More...

int16_t	beginBLE (float freq=2400.0, uint16_t br=800, float freqDev=400.0, int8_t power=10, uint8_t dataShaping=RADIOLIB_SHAPING_0_5)
	Initialization method for BLE modem. More...

int16_t	beginFLRC (float freq=2400.0, uint16_t br=650, uint8_t cr=3, int8_t power=10, uint16_t preambleLength=16, uint8_t dataShaping=RADIOLIB_SHAPING_0_5)
	Initialization method for FLRC modem. More...

int16_t	reset (bool verify=true)
	Reset method. Will reset the chip to the default state using RST pin. More...

int16_t	transmit (uint8_t *data, size_t len, uint8_t addr=0) override
	Blocking binary transmit method. Overloads for string-based transmissions are implemented in PhysicalLayer. More...

int16_t	receive (uint8_t *data, size_t len) override
	Blocking binary receive method. Overloads for string-based transmissions are implemented in PhysicalLayer. More...

int16_t	transmitDirect (uint32_t frf=0) override
	Starts direct mode transmission. More...

int16_t	receiveDirect () override
	Starts direct mode reception. Only implemented for PhysicalLayer compatibility, as SX128x series does not support direct mode reception. Will always return RADIOLIB_ERR_UNKNOWN. More...

int16_t	scanChannel ()
	Performs scan for LoRa transmission in the current channel. Detects both preamble and payload. More...

int16_t	sleep (bool retainConfig=true)
	Sets the module to sleep mode. More...

int16_t	standby () override
	Sets the module to standby mode (overload for PhysicalLayer compatibility, uses 13 MHz RC oscillator). More...

int16_t	standby (uint8_t mode)
	Sets the module to standby mode. More...

void	setDio1Action (void(*func)(void))
	Sets interrupt service routine to call when DIO1 activates. More...

void	clearDio1Action ()
	Clears interrupt service routine to call when DIO1 activates.

int16_t	startTransmit (uint8_t *data, size_t len, uint8_t addr=0) override
	Interrupt-driven binary transmit method. Overloads for string-based transmissions are implemented in PhysicalLayer. More...

int16_t	finishTransmit () override
	Clean up after transmission is done. More...

int16_t	startReceive (uint16_t timeout=RADIOLIB_SX128X_RX_TIMEOUT_INF, uint16_t irqFlags=RADIOLIB_SX128X_IRQ_RX_DEFAULT, uint16_t irqMask=RADIOLIB_SX128X_IRQ_RX_DONE, size_t len=0)
	Interrupt-driven receive method. DIO1 will be activated when full packet is received. More...

uint16_t	getIrqStatus ()
	Reads the current IRQ status. More...

int16_t	readData (uint8_t *data, size_t len) override
	Reads data received after calling startReceive method. More...

int16_t	setFrequency (float freq)
	Sets carrier frequency. Allowed values are in range from 2400.0 to 2500.0 MHz. More...

int16_t	setBandwidth (float bw)
	Sets LoRa bandwidth. Allowed values are 203.125, 406.25, 812.5 and 1625.0 kHz. More...

int16_t	setSpreadingFactor (uint8_t sf)
	Sets LoRa spreading factor. Allowed values range from 5 to 12. More...

int16_t	setCodingRate (uint8_t cr, bool longInterleaving=false)
	Sets LoRa coding rate denominator. Allowed values range from 5 to 8. More...

int16_t	setOutputPower (int8_t power)
	Sets output power. Allowed values are in range from -18 to 13 dBm. More...

int16_t	setPreambleLength (uint32_t preambleLength)
	Sets preamble length for currently active modem. Allowed values range from 1 to 65535. More...

int16_t	setBitRate (float br)
	Sets FSK or FLRC bit rate. Allowed values are 125, 250, 400, 500, 800, 1000, 1600 and 2000 kbps (for FSK modem) or 260, 325, 520, 650, 1000 and 1300 (for FLRC modem). More...

int16_t	setFrequencyDeviation (float freqDev) override
	Sets FSK frequency deviation. Allowed values range from 0.0 to 3200.0 kHz. More...

int16_t	setDataShaping (uint8_t sh) override
	Sets time-bandwidth product of Gaussian filter applied for shaping. Allowed values are RADIOLIB_SHAPING_0_5 or RADIOLIB_SHAPING_1_0. Set to RADIOLIB_SHAPING_NONE to disable data shaping. More...

int16_t	setSyncWord (uint8_t *syncWord, uint8_t len)
	Sets FSK/FLRC sync word in the form of array of up to 5 bytes (FSK). For FLRC modem, the sync word must be exactly 4 bytes long. More...

int16_t	setSyncWord (uint8_t syncWord, uint8_t controlBits=0x44)
	Sets LoRa sync word. More...

int16_t	setCRC (uint8_t len, uint32_t initial=0x1D0F, uint16_t polynomial=0x1021)
	Sets CRC configuration. More...

int16_t	setWhitening (bool enabled)
	Sets whitening parameters, not available for LoRa or FLRC modem. More...

int16_t	setAccessAddress (uint32_t addr)
	Sets BLE access address. More...

int16_t	setHighSensitivityMode (bool hsm=false)
	Enables or disables receiver high sensitivity mode. More...

int16_t	setGainControl (uint8_t gain=0)
	Enables or disables receiver manual gain control. More...

float	getRSSI ()
	Gets RSSI (Recorded Signal Strength Indicator) of the last received packet. More...

float	getSNR ()
	Gets SNR (Signal to Noise Ratio) of the last received packet. Only available for LoRa or ranging modem. More...

float	getFrequencyError ()
	Gets frequency error of the latest received packet. More...

size_t	getPacketLength (bool update=true) override
	Query modem for the packet length of received payload. More...

uint32_t	getTimeOnAir (size_t len)
	Get expected time-on-air for a given size of payload. More...

int16_t	implicitHeader (size_t len)
	Set implicit header mode for future reception/transmission. More...

int16_t	explicitHeader ()
	Set explicit header mode for future reception/transmission. More...

int16_t	setEncoding (uint8_t encoding) override
	Sets transmission encoding. Serves only as alias for PhysicalLayer compatibility. More...

void	setRfSwitchPins (RADIOLIB_PIN_TYPE rxEn, RADIOLIB_PIN_TYPE txEn)
	Some modules contain external RF switch controlled by pins. This function gives RadioLib control over those pins to automatically switch between various modes: When idle both pins will be LOW, during TX the `txEn` pin will be HIGH, during RX the `rxPin` will be HIGH. More...

void	setRfSwitchTable (const RADIOLIB_PIN_TYPE(&pins)[Module::RFSWITCH_MAX_PINS], const Module::RfSwitchMode_t table[])
	Some modules contain external RF switch controlled by pins. This function gives RadioLib control over those pins to automatically switch between various modes. More...

uint8_t	randomByte ()
	Dummy random method, to ensure PhysicalLayer compatibility. More...

void	setDirectAction (void(*func)(void))
	Dummy method, to ensure PhysicalLayer compatibility. More...

void	readBit (RADIOLIB_PIN_TYPE pin)
	Dummy method, to ensure PhysicalLayer compatibility. More...

int16_t	transmit (__FlashStringHelper *fstr, uint8_t addr=0)
	Arduino Flash String transmit method. More...

int16_t	transmit (String &str, uint8_t addr=0)
	Arduino String transmit method. More...

int16_t	transmit (const char *str, uint8_t addr=0)
	C-string transmit method. More...

virtual int16_t	transmit (uint8_t *data, size_t len, uint8_t addr=0)
	Binary transmit method. Must be implemented in module class. More...

int16_t	receive (String &str, size_t len=0)
	Arduino String receive method. More...

virtual int16_t	receive (uint8_t *data, size_t len)
	Binary receive method. Must be implemented in module class. More...

int16_t	startTransmit (String &str, uint8_t addr=0)
	Interrupt-driven Arduino String transmit method. Unlike the standard transmit method, this one is non-blocking. Interrupt pin will be activated when transmission finishes. More...

int16_t	startTransmit (const char *str, uint8_t addr=0)
	Interrupt-driven Arduino String transmit method. Unlike the standard transmit method, this one is non-blocking. Interrupt pin will be activated when transmission finishes. More...

virtual int16_t	startTransmit (uint8_t *data, size_t len, uint8_t addr=0)
	Interrupt-driven binary transmit method. More...

int16_t	readData (String &str, size_t len=0)
	Reads data that was received after calling startReceive method. More...

virtual int16_t	readData (uint8_t *data, size_t len)
	Reads data that was received after calling startReceive method. More...

Public Member Functions inherited from PhysicalLayer
	PhysicalLayer (float freqStep, size_t maxPacketLength)
	Default constructor. More...

int16_t	transmit (__FlashStringHelper *fstr, uint8_t addr=0)
	Arduino Flash String transmit method. More...

int16_t	transmit (String &str, uint8_t addr=0)
	Arduino String transmit method. More...

int16_t	transmit (const char *str, uint8_t addr=0)
	C-string transmit method. More...

int16_t	receive (String &str, size_t len=0)
	Arduino String receive method. More...

virtual int16_t	sleep ()
	Sets module to sleep. More...

virtual int16_t	startReceive (uint32_t timeout, uint16_t irqFlags, uint16_t irqMask, size_t len)
	Interrupt-driven receive method. A DIO pin will be activated when full packet is received. Must be implemented in module class. More...

int16_t	startTransmit (String &str, uint8_t addr=0)
	Interrupt-driven Arduino String transmit method. Unlike the standard transmit method, this one is non-blocking. Interrupt pin will be activated when transmission finishes. More...

int16_t	startTransmit (const char *str, uint8_t addr=0)
	Interrupt-driven Arduino String transmit method. Unlike the standard transmit method, this one is non-blocking. Interrupt pin will be activated when transmission finishes. More...

int16_t	readData (String &str, size_t len=0)
	Reads data that was received after calling startReceive method. More...

float	getFreqStep () const
	Gets the module frequency step size that was set in constructor. More...

int32_t	random (int32_t max)
	Get truly random number in range 0 - max. More...

int32_t	random (int32_t min, int32_t max)
	Get truly random number in range min - max. More...

int16_t	startDirect ()
	Configure module parameters for direct modes. Must be called prior to "ham" modes like RTTY or AX.25. Only available in FSK mode. More...

int16_t	setDirectSyncWord (uint32_t syncWord, uint8_t len)
	Set sync word to be used to determine start of packet in direct reception mode. More...

int16_t	available ()
	Get the number of direct mode bytes currently available in buffer. More...

void	dropSync ()
	Forcefully drop synchronization.

uint8_t	read (bool drop=true)
	Get data from direct mode buffer. More...

virtual int16_t	setDIOMapping (RADIOLIB_PIN_TYPE pin, uint8_t value)
	Configure DIO pin mapping to get a given signal on a DIO pin (if available). More...

Detailed Description

Base class for SX128x series. All derived classes for SX128x (e.g. SX1280 or SX1281) inherit from this base class. This class should not be instantiated directly from Arduino sketch, only from its derived classes.

Constructor & Destructor Documentation

◆ SX128x()

SX128x::SX128x ( Module * mod )

Default constructor.

Parameters

mod	Instance of Module that will be used to communicate with the radio.

Member Function Documentation

◆ begin()

int16_t SX128x::begin	(	float	freq = `2400.0`,
		float	bw = `812.5`,
		uint8_t	sf = `9`,
		uint8_t	cr = `7`,
		uint8_t	syncWord = `RADIOLIB_SX128X_SYNC_WORD_PRIVATE`,
		int8_t	power = `10`,
		uint16_t	preambleLength = `12`
	)

Initialization method for LoRa modem.

Parameters

freq	Carrier frequency in MHz. Defaults to 2400.0 MHz.
bw	LoRa bandwidth in kHz. Defaults to 812.5 kHz.
sf	LoRa spreading factor. Defaults to 9.
cr	LoRa coding rate denominator. Defaults to 7 (coding rate 4/7).
syncWord	2-byte LoRa sync word. Defaults to RADIOLIB_SX128X_SYNC_WORD_PRIVATE (0x12).
power	Output power in dBm. Defaults to 10 dBm.
preambleLength	LoRa preamble length in symbols. Defaults to 12 symbols.

Returns: Status Codes

◆ beginBLE()

int16_t SX128x::beginBLE	(	float	freq = `2400.0`,
		uint16_t	br = `800`,
		float	freqDev = `400.0`,
		int8_t	power = `10`,
		uint8_t	dataShaping = `RADIOLIB_SHAPING_0_5`
	)

Initialization method for BLE modem.

Parameters

freq	Carrier frequency in MHz. Defaults to 2400.0 MHz.
br	BLE bit rate in kbps. Defaults to 800 kbps.
freqDev	Frequency deviation from carrier frequency in kHz. Defaults to 400.0 kHz.
power	Output power in dBm. Defaults to 10 dBm.
dataShaping	Time-bandwidth product of the Gaussian filter to be used for shaping. Defaults to 0.5.

Returns: Status Codes

◆ beginFLRC()

int16_t SX128x::beginFLRC	(	float	freq = `2400.0`,
		uint16_t	br = `650`,
		uint8_t	cr = `3`,
		int8_t	power = `10`,
		uint16_t	preambleLength = `16`,
		uint8_t	dataShaping = `RADIOLIB_SHAPING_0_5`
	)

Initialization method for FLRC modem.

Parameters

freq	Carrier frequency in MHz. Defaults to 2400.0 MHz.
br	FLRC bit rate in kbps. Defaults to 650 kbps.
cr	FLRC coding rate. Defaults to 3 (coding rate 3/4).
power	Output power in dBm. Defaults to 10 dBm.
preambleLength	FLRC preamble length in bits. Defaults to 16 bits.
dataShaping	Time-bandwidth product of the Gaussian filter to be used for shaping. Defaults to 0.5.

Returns: Status Codes

◆ beginGFSK()

int16_t SX128x::beginGFSK	(	float	freq = `2400.0`,
		uint16_t	br = `800`,
		float	freqDev = `400.0`,
		int8_t	power = `10`,
		uint16_t	preambleLength = `16`
	)

Initialization method for GFSK modem.

Parameters

freq	Carrier frequency in MHz. Defaults to 2400.0 MHz.
br	FSK bit rate in kbps. Defaults to 800 kbps.
freqDev	Frequency deviation from carrier frequency in kHz. Defaults to 400.0 kHz.
power	Output power in dBm. Defaults to 10 dBm.
preambleLength	FSK preamble length in bits. Defaults to 16 bits.

Returns: Status Codes

◆ explicitHeader()

int16_t SX128x::explicitHeader ( )

Set explicit header mode for future reception/transmission.

Parameters

len	Payload length in bytes.

Returns: Status Codes

◆ finishTransmit()

int16_t SX128x::finishTransmit ( )

overridevirtual

Clean up after transmission is done.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ getFrequencyError()

float SX128x::getFrequencyError ( )

Gets frequency error of the latest received packet.

Returns: Frequency error in Hz.

◆ getIrqStatus()

uint16_t SX128x::getIrqStatus ( )

Reads the current IRQ status.

Returns: IRQ status bits

◆ getPacketLength()

size_t SX128x::getPacketLength ( bool update = true )

overridevirtual

Query modem for the packet length of received payload.

Parameters

update Update received packet length. Will return cached value when set to false.

Returns: Length of last received packet in bytes.

Reimplemented from PhysicalLayer.

◆ getRSSI()

float SX128x::getRSSI ( )

virtual

Gets RSSI (Recorded Signal Strength Indicator) of the last received packet.

Returns: RSSI of the last received packet in dBm.

Reimplemented from PhysicalLayer.

◆ getSNR()

float SX128x::getSNR ( )

virtual

Gets SNR (Signal to Noise Ratio) of the last received packet. Only available for LoRa or ranging modem.

Returns: SNR of the last received packet in dB.

Reimplemented from PhysicalLayer.

◆ getTimeOnAir()

uint32_t SX128x::getTimeOnAir ( size_t len )

Get expected time-on-air for a given size of payload.

Parameters

len	Payload length in bytes.

Returns: Expected time-on-air in microseconds.

Todo:: implement this mess - SX1280 datasheet v3.0 section 7.4.4.2

◆ implicitHeader()

int16_t SX128x::implicitHeader ( size_t len )

Set implicit header mode for future reception/transmission.

Returns: Status Codes

◆ randomByte()

uint8_t SX128x::randomByte ( )

virtual

Dummy random method, to ensure PhysicalLayer compatibility.

Returns: Always returns 0.

Reimplemented from PhysicalLayer.

◆ readBit()

void SX128x::readBit ( RADIOLIB_PIN_TYPE pin )

virtual

Dummy method, to ensure PhysicalLayer compatibility.

Parameters

pin Ignored.

Reimplemented from PhysicalLayer.

◆ readData() [1/3]

int16_t PhysicalLayer::readData

Reads data that was received after calling startReceive method.

Parameters

str	Address of Arduino String to save the received data.
len	Expected number of characters in the message. When set to 0, the packet length will be retreived automatically. When more bytes than received are requested, only the number of bytes requested will be returned.

Returns: Status Codes

◆ readData() [2/3]

int16_t PhysicalLayer::readData

Reads data that was received after calling startReceive method.

Parameters

data	Pointer to array to save the received binary data.
len	Number of bytes that will be read. When set to 0, the packet length will be retreived automatically. When more bytes than received are requested, only the number of bytes requested will be returned.

Returns: Status Codes

◆ readData() [3/3]

int16_t SX128x::readData	(	uint8_t *	data,
		size_t	len
	)

overridevirtual

Reads data received after calling startReceive method.

Parameters

data	Pointer to array to save the received binary data.
len	Number of bytes that will be read. When set to 0, the packet length will be retreived automatically. When more bytes than received are requested, only the number of bytes requested will be returned.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ receive() [1/3]

int16_t PhysicalLayer::receive

Arduino String receive method.

Parameters

str	Address of Arduino String to save the received data.
len	Expected number of characters in the message. Leave as 0 if expecting a unknown size packet

Returns: Status Codes

◆ receive() [2/3]

int16_t PhysicalLayer::receive

Binary receive method. Must be implemented in module class.

Parameters

data	Pointer to array to save the received binary data.
len	Number of bytes that will be received. Must be known in advance for binary transmissions.

Returns: Status Codes

◆ receive() [3/3]

int16_t SX128x::receive	(	uint8_t *	data,
		size_t	len
	)

overridevirtual

Blocking binary receive method. Overloads for string-based transmissions are implemented in PhysicalLayer.

Parameters

data	Binary data to be sent.
len	Number of bytes to send.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ receiveDirect()

int16_t SX128x::receiveDirect ( )

overridevirtual

Starts direct mode reception. Only implemented for PhysicalLayer compatibility, as SX128x series does not support direct mode reception. Will always return RADIOLIB_ERR_UNKNOWN.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ reset()

int16_t SX128x::reset ( bool verify = true )

Reset method. Will reset the chip to the default state using RST pin.

Parameters

verify Whether correct module startup should be verified. When set to true, RadioLib will attempt to verify the module has started correctly by repeatedly issuing setStandby command. Enabled by default.

Returns: Status Codes

◆ scanChannel()

int16_t SX128x::scanChannel ( )

Performs scan for LoRa transmission in the current channel. Detects both preamble and payload.

Returns: Status Codes

◆ setAccessAddress()

int16_t SX128x::setAccessAddress ( uint32_t addr )

Sets BLE access address.

Parameters

addr	BLE access address.

Returns: Status Codes

◆ setBandwidth()

int16_t SX128x::setBandwidth ( float bw )

Sets LoRa bandwidth. Allowed values are 203.125, 406.25, 812.5 and 1625.0 kHz.

Parameters

bw	LoRa bandwidth to be set in kHz.

Returns: Status Codes

◆ setBitRate()

int16_t SX128x::setBitRate ( float br )

virtual

Sets FSK or FLRC bit rate. Allowed values are 125, 250, 400, 500, 800, 1000, 1600 and 2000 kbps (for FSK modem) or 260, 325, 520, 650, 1000 and 1300 (for FLRC modem).

Parameters

br	FSK/FLRC bit rate to be set in kbps.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ setCodingRate()

int16_t SX128x::setCodingRate	(	uint8_t	cr,
		bool	longInterleaving = `false`
	)

Sets LoRa coding rate denominator. Allowed values range from 5 to 8.

Parameters

cr	LoRa coding rate denominator to be set.
longInterleaving	Whether to enable long interleaving mode. Not available for coding rate 4/7, defaults to false.

Returns: Status Codes

◆ setCRC()

int16_t SX128x::setCRC	(	uint8_t	len,
		uint32_t	initial = `0x1D0F`,
		uint16_t	polynomial = `0x1021`
	)

Sets CRC configuration.

Parameters

len	CRC length in bytes, Allowed values are 1, 2 or 3, set to 0 to disable CRC.
initial	Initial CRC value. Defaults to 0x1D0F (CCIT CRC), not available for LoRa modem.
polynomial	Polynomial for CRC calculation. Defaults to 0x1021 (CCIT CRC), not available for LoRa or BLE modem.

Returns: Status Codes

◆ setDataShaping()

int16_t SX128x::setDataShaping ( uint8_t sh )

overridevirtual

Sets time-bandwidth product of Gaussian filter applied for shaping. Allowed values are RADIOLIB_SHAPING_0_5 or RADIOLIB_SHAPING_1_0. Set to RADIOLIB_SHAPING_NONE to disable data shaping.

Parameters

sh	Time-bandwidth product of Gaussian filter to be set.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ setDio1Action()

void SX128x::setDio1Action ( void(*)(void) func )

virtual

Sets interrupt service routine to call when DIO1 activates.

Parameters

func	ISR to call.

Reimplemented from PhysicalLayer.

◆ setDirectAction()

void SX128x::setDirectAction ( void(*)(void) func )

virtual

Dummy method, to ensure PhysicalLayer compatibility.

Parameters

func Ignored.

Reimplemented from PhysicalLayer.

◆ setEncoding()

int16_t SX128x::setEncoding ( uint8_t encoding )

overridevirtual

Sets transmission encoding. Serves only as alias for PhysicalLayer compatibility.

Parameters

encoding Encoding to be used. Set to 0 for NRZ, and 2 for whitening.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ setFrequency()

int16_t SX128x::setFrequency ( float freq )

virtual

Sets carrier frequency. Allowed values are in range from 2400.0 to 2500.0 MHz.

Parameters

freq	Carrier frequency to be set in MHz.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ setFrequencyDeviation()

int16_t SX128x::setFrequencyDeviation ( float freqDev )

overridevirtual

Sets FSK frequency deviation. Allowed values range from 0.0 to 3200.0 kHz.

Parameters

freqDev FSK frequency deviation to be set in kHz.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ setGainControl()

int16_t SX128x::setGainControl ( uint8_t gain = 0 )

Enables or disables receiver manual gain control.

Parameters

gain	Use 0 for automatic gain, 1 for minimum gain and up to 13 for maximum gain.

Returns: 0

◆ setHighSensitivityMode()

int16_t SX128x::setHighSensitivityMode ( bool hsm = false )

Enables or disables receiver high sensitivity mode.

Parameters

True	to enable and false to disable.

Returns: 0

◆ setOutputPower()

int16_t SX128x::setOutputPower ( int8_t power )

Sets output power. Allowed values are in range from -18 to 13 dBm.

Parameters

power Output power to be set in dBm.

Returns: Status Codes

◆ setPreambleLength()

int16_t SX128x::setPreambleLength ( uint32_t preambleLength )

Sets preamble length for currently active modem. Allowed values range from 1 to 65535.

Parameters

preambleLength Preamble length to be set in symbols (LoRa) or bits (FSK/BLE/FLRC).

Returns: Status Codes

◆ setRfSwitchPins()

void SX128x::setRfSwitchPins	(	RADIOLIB_PIN_TYPE	rxEn,
		RADIOLIB_PIN_TYPE	txEn
	)

Some modules contain external RF switch controlled by pins. This function gives RadioLib control over those pins to automatically switch between various modes: When idle both pins will be LOW, during TX the txEn pin will be HIGH, during RX the rxPin will be HIGH.

Radiolib will automatically set the pin mode and value of these pins, so do not control them from the sketch.

When more than two pins or more control over the output values are needed, use the setRfSwitchTable() function.

Parameters

rxEn	RX enable pin.
txEn	TX enable pin.

◆ setRfSwitchTable()

void SX128x::setRfSwitchTable	(	const RADIOLIB_PIN_TYPE(&)	pins[Module::RFSWITCH_MAX_PINS],
		const Module::RfSwitchMode_t	table[]
	)

Some modules contain external RF switch controlled by pins. This function gives RadioLib control over those pins to automatically switch between various modes.

Radiolib will automatically set the pin mode and value of these pins, so do not control them from the sketch.

Parameters

pins	A reference to an array of pins to control. This should always be an array of 3 elements. If you need less pins, use RADIOLIB_NC for the unused elements.
table	A reference to an array of pin values to use for each supported mode. Each element is an RfSwitchMode_T struct that lists the mode for which it applies and the values for each of the pins passed in the pins argument respectively.

The pins array will be copied into the Module object, so the original array can be deallocated after this call. However, a reference to the table array will be stored, so that array must remain valid as long RadioLib is being used.

The mode field in each table row should normally use any of the MODE_* constants from the Module::OpMode_t enum. However, some radios support additional modes and will define their own OpMode_t enum.

The length of the table is variable (to support radios that add additional modes), so the table must always be terminated with the special END_OF_MODE_TABLE value.

Normally all modes should be listed in the table, but for some radios, modes can be omitted to indicate they are not supported (e.g. when a radio has a high power and low power TX mode but external circuitry only supports low power). If applicable, this is documented in the radio class itself.

Example

For example, on a board that has an RF switch with an enable pin connected to PA0 and a TX/RX select pin connected to PA1:

// In global scope, define the pin array and mode table
static const RADIOLIB_PIN_TYPE rfswitch_pins[] =
                       {PA0,  PA1,  RADIOLIB_NC};
static const Module::RfSwitchMode_t rfswitch_table[] = {
  {Module::MODE_IDLE,  {LOW,  LOW}},
  {Module::MODE_RX,    {HIGH, LOW}},
  {Module::MODE_TX,    {HIGH, HIGH}},
   Module::END_OF_MODE_TABLE,
};
 
void setup() {
  ...
  // Then somewhere in setup, pass them to radiolib
  radio.setRfSwitchTable(rfswitch_pins, rfswitch_table);
  ...
}

◆ setSpreadingFactor()

int16_t SX128x::setSpreadingFactor ( uint8_t sf )

Sets LoRa spreading factor. Allowed values range from 5 to 12.

Parameters

sf	LoRa spreading factor to be set.

Returns: Status Codes

◆ setSyncWord() [1/2]

int16_t SX128x::setSyncWord	(	uint8_t *	syncWord,
		uint8_t	len
	)

Sets FSK/FLRC sync word in the form of array of up to 5 bytes (FSK). For FLRC modem, the sync word must be exactly 4 bytes long.

Parameters

syncWord	Sync word to be set.
len	Sync word length in bytes.

Returns: Status Codes

Todo:: add support for multiple sync words

◆ setSyncWord() [2/2]

int16_t SX128x::setSyncWord	(	uint8_t	syncWord,
		uint8_t	controlBits = `0x44`
	)

Sets LoRa sync word.

Parameters

syncWord	LoRa sync word to be set.
controlBits	Undocumented control bits, required for compatibility purposes.

Returns: Status Codes

◆ setWhitening()

int16_t SX128x::setWhitening ( bool enabled )

Sets whitening parameters, not available for LoRa or FLRC modem.

Parameters

enabled Set to true to enable whitening.

Returns: Status Codes

◆ sleep()

int16_t SX128x::sleep ( bool retainConfig = true )

Sets the module to sleep mode.

Parameters

retainConfig Set to true to retain configuration and data buffer or to false to discard current configuration and data buffer. Defaults to true.

Returns: Status Codes

◆ standby() [1/2]

int16_t SX128x::standby ( )

overridevirtual

Sets the module to standby mode (overload for PhysicalLayer compatibility, uses 13 MHz RC oscillator).

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ standby() [2/2]

int16_t SX128x::standby ( uint8_t mode )

virtual

Sets the module to standby mode.

Parameters

mode	Oscillator to be used in standby mode. Can be set to RADIOLIB_SX128X_STANDBY_RC (13 MHz RC oscillator) or RADIOLIB_SX128X_STANDBY_XOSC (52 MHz external crystal oscillator).

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ startReceive()

int16_t SX128x::startReceive	(	uint16_t	timeout = `RADIOLIB_SX128X_RX_TIMEOUT_INF`,
		uint16_t	irqFlags = `RADIOLIB_SX128X_IRQ_RX_DEFAULT`,
		uint16_t	irqMask = `RADIOLIB_SX128X_IRQ_RX_DONE`,
		size_t	len = `0`
	)

Interrupt-driven receive method. DIO1 will be activated when full packet is received.

Parameters

timeout	Raw timeout value, expressed as multiples of 15.625 us. Defaults to RADIOLIB_SX128X_RX_TIMEOUT_INF for infinite timeout (Rx continuous mode), set to RADIOLIB_SX128X_RX_TIMEOUT_NONE for no timeout (Rx single mode). If timeout other than infinite is set, signal will be generated on DIO1.
irqFlags	Sets the IRQ flags, defaults to RADIOLIB_SX128X_IRQ_RX_DEFAULT.
irqMask	Sets the mask of IRQ flags that will trigger DIO1, defaults to RADIOLIB_SX128X_IRQ_RX_DONE.
len	Only for PhysicalLayer compatibility, not used.

Returns: Status Codes

◆ startTransmit() [1/4]

int16_t PhysicalLayer::startTransmit

Interrupt-driven Arduino String transmit method. Unlike the standard transmit method, this one is non-blocking. Interrupt pin will be activated when transmission finishes.

Parameters

str	C-string that will be transmitted.
addr	Node address to transmit the packet to. Only used in FSK mode.

Returns: Status Codes

◆ startTransmit() [2/4]

int16_t PhysicalLayer::startTransmit

Interrupt-driven Arduino String transmit method. Unlike the standard transmit method, this one is non-blocking. Interrupt pin will be activated when transmission finishes.

Parameters

str	Address of Arduino String that will be transmitted.
addr	Node address to transmit the packet to. Only used in FSK mode.

Returns: Status Codes

◆ startTransmit() [3/4]

int16_t PhysicalLayer::startTransmit

Interrupt-driven binary transmit method.

Parameters

data	Binary data that will be transmitted.
len	Length of binary data to transmit (in bytes).
addr	Node address to transmit the packet to. Only used in FSK mode.

Returns: Status Codes

◆ startTransmit() [4/4]

int16_t SX128x::startTransmit	(	uint8_t *	data,
		size_t	len,
		uint8_t	addr = `0`
	)

overridevirtual

Interrupt-driven binary transmit method. Overloads for string-based transmissions are implemented in PhysicalLayer.

Parameters

data	Binary data to be sent.
len	Number of bytes to send.
addr	Address to send the data to. Unsupported, compatibility only.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ transmit() [1/5]

int16_t PhysicalLayer::transmit

Arduino Flash String transmit method.

Parameters

str	Pointer to Arduino Flash String that will be transmitted.
addr	Node address to transmit the packet to. Only used in FSK mode.

Returns: Status Codes

◆ transmit() [2/5]

int16_t PhysicalLayer::transmit

C-string transmit method.

Parameters

str	C-string that will be transmitted.
addr	Node address to transmit the packet to. Only used in FSK mode.

Returns: Status Codes

◆ transmit() [3/5]

int16_t PhysicalLayer::transmit

Arduino String transmit method.

Parameters

str	Address of Arduino string that will be transmitted.
addr	Node address to transmit the packet to. Only used in FSK mode.

Returns: Status Codes

◆ transmit() [4/5]

int16_t PhysicalLayer::transmit

Binary transmit method. Must be implemented in module class.

Parameters

data	Binary data that will be transmitted.
len	Length of binary data to transmit (in bytes).
addr	Node address to transmit the packet to. Only used in FSK mode.

Returns: Status Codes

◆ transmit() [5/5]

int16_t SX128x::transmit	(	uint8_t *	data,
		size_t	len,
		uint8_t	addr = `0`
	)

overridevirtual

Blocking binary transmit method. Overloads for string-based transmissions are implemented in PhysicalLayer.

Parameters

data	Binary data to be sent.
len	Number of bytes to send.
addr	Address to send the data to. Unsupported, compatibility only.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ transmitDirect()

int16_t SX128x::transmitDirect ( uint32_t frf = 0 )

overridevirtual

Starts direct mode transmission.

Parameters

frf	Raw RF frequency value. Defaults to 0, required for quick frequency shifts in RTTY.

Returns: Status Codes

Reimplemented from PhysicalLayer.

The documentation for this class was generated from the following files:

src/modules/SX128x/SX128x.h
src/modules/SX128x/SX128x.cpp

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ SX128x()

Member Function Documentation

◆ begin()

◆ beginBLE()

◆ beginFLRC()

◆ beginGFSK()

◆ explicitHeader()

◆ finishTransmit()

◆ getFrequencyError()

◆ getIrqStatus()

◆ getPacketLength()

◆ getRSSI()

◆ getSNR()

◆ getTimeOnAir()

◆ implicitHeader()

◆ randomByte()

◆ readBit()

◆ readData() [1/3]

◆ readData() [2/3]

◆ readData() [3/3]

◆ receive() [1/3]

◆ receive() [2/3]

◆ receive() [3/3]

◆ receiveDirect()

◆ reset()

◆ scanChannel()

◆ setAccessAddress()

◆ setBandwidth()

◆ setBitRate()

◆ setCodingRate()

◆ setCRC()

◆ setDataShaping()

◆ setDio1Action()

◆ setDirectAction()

◆ setEncoding()

◆ setFrequency()

◆ setFrequencyDeviation()

◆ setGainControl()

◆ setHighSensitivityMode()

◆ setOutputPower()

◆ setPreambleLength()

◆ setRfSwitchPins()

◆ setRfSwitchTable()

Example

◆ setSpreadingFactor()

◆ setSyncWord() [1/2]

◆ setSyncWord() [2/2]

◆ setWhitening()

◆ sleep()

◆ standby() [1/2]

◆ standby() [2/2]

◆ startReceive()

◆ startTransmit() [1/4]

◆ startTransmit() [2/4]

◆ startTransmit() [3/4]

◆ startTransmit() [4/4]

◆ transmit() [1/5]

◆ transmit() [2/5]

◆ transmit() [3/5]

◆ transmit() [4/5]

◆ transmit() [5/5]

◆ transmitDirect()