Control class for CC1101 module. More...

#include <CC1101.h>

Inheritance diagram for CC1101:

Public Member Functions
	CC1101 (Module *module)
	Default constructor.
int16_t	begin (const ConfigFSK_t &config)
	Initialization method for FSK modem.
int16_t	beginFSK4 (const ConfigFSK_t &config)
	Initialization method for 4-FSK modem.
void	reset ()
	Reset method - resets the chip using manual reset sequence (without RESET pin).
int16_t	transmit (const uint8_t *data, size_t len, uint8_t addr=0) override
	Blocking binary transmit method. Overloads for string-based transmissions are implemented in PhysicalLayer.
int16_t	receive (uint8_t *data, size_t len, RadioLibTime_t timeout=0) override
	Blocking binary receive method. Overloads for string-based transmissions are implemented in PhysicalLayer.
int16_t	standby () override
	Sets the module to standby mode.
int16_t	standby (uint8_t mode) override
	Sets the module to standby.
int16_t	sleep () override
	Sets the module to sleep mode.
int16_t	transmitDirect (uint32_t frf=0) override
	Starts synchronous direct mode transmission.
int16_t	receiveDirect () override
	Starts synchronous direct mode reception.
int16_t	transmitDirectAsync (uint32_t frf=0)
	Starts asynchronous direct mode transmission.
int16_t	receiveDirectAsync ()
	Starts asynchronous direct mode reception.
int16_t	packetMode ()
	Stops direct mode. It is required to call this method to switch from direct transmissions to packet-based transmissions.
void	setGdo0Action (void(*func)(void), uint32_t dir)
	Sets interrupt service routine to call when GDO0 activates.
void	clearGdo0Action ()
	Clears interrupt service routine to call when GDO0 activates.
void	setGdo2Action (void(*func)(void), uint32_t dir)
	Sets interrupt service routine to call when GDO2 activates.
void	clearGdo2Action ()
	Clears interrupt service routine to call when GDO0 activates.
int16_t	startTransmit (const uint8_t *data, size_t len, uint8_t addr=0) override
	Interrupt-driven binary transmit method for packets less than 64 bytes. Method blocks for packets longer than 64 bytes up to a 255 byte limit, until the last bytes are placed in the FIFO. Some limitations and issues apply; see discussion: https://github.com/jgromes/RadioLib/discussions/1138 Overloads for string-based transmissions are implemented in PhysicalLayer.
int16_t	finishTransmit () override
	Clean up after transmission is done.
int16_t	startReceive () override
	Interrupt-driven receive method. GDO0 will be activated when full packet is received.
int16_t	startReceive (uint32_t timeout, uint32_t irqFlags, uint32_t irqMask, size_t len) override
	Interrupt-driven receive method, implemented for compatibility with PhysicalLayer.
int16_t	readData (uint8_t *data, size_t len) override
	Reads data received after calling startReceive method. When the packet length is not known in advance, getPacketLength method must be called BEFORE calling readData!
int16_t	finishReceive () override
	Clean up after reception is done.
int16_t	setFrequency (uint32_t freq) override
	Sets carrier frequency. Allowed values are in bands 300 to 348 MHz, 387 to 464 MHz and 779 to 928 MHz.
int16_t	setBitRate (uint32_t br) override
	Sets bit rate. Allowed values range from 25 bps to 600 kbps.
int16_t	setBitRateTolerance (uint8_t brt)
	Sets bit rate tolerance in BSCFG register. Allowed values are 0:(0%), 1(3,125%), 2:(6,25%) and 3:(12,5%).
int16_t	setRxBandwidth (uint32_t rxBw)
	Sets receiver bandwidth. Allowed values are 58, 68, 81, 102, 116, 135, 162, 203, 232, 270, 325, 406, 464, 541, 650 and 812 kHz.
int16_t	autoSetRxBandwidth ()
	calculates and sets Rx bandwidth based on the freq, baud and freq uncertainty. Reimplement of atlas0fd00m's (RfCat) CalculatePktChanBw function. Modified for worse ppm with the CC1101, and adjusted for the supportted CC1101 bw.
int16_t	setFrequencyDeviation (uint32_t freqDev) override
	Sets frequency deviation. Allowed values range from 1.587 to 380.8 kHz.
int16_t	getFrequencyDeviation (uint32_t *freqDev)
	Gets frequency deviation.
int16_t	setOutputPower (int8_t pwr) override
	Sets output power. Allowed values are -30, -20, -15, -10, 0, 5, 7 or 10 dBm.
int16_t	setSyncWord (uint8_t *sync, size_t len) override
	Set 1 or 2 bytes of sync word.
int16_t	setSyncWord (uint8_t syncH, uint8_t syncL, uint8_t maxErrBits=0, bool requireCarrierSense=false, bool repeatSync=false)
	Sets 16-bit sync word as a two byte value.
int16_t	setSyncWord (const uint8_t *syncWord, uint8_t len, uint8_t maxErrBits=0, bool requireCarrierSense=false, bool repeatSync=false)
	Sets 1 or 2 bytes of sync word.
int16_t	setPreambleLength (size_t preambleLength, size_t qualityThreshold=0xFFFFFFFF) override
	Sets preamble length.
int16_t	enableRxAfterTx (bool enable=true)
	Enables/disables automatic switch to reception after transmission. Uses the TXOFF_RX mode of CC1101.
int16_t	setNodeAddress (uint8_t nodeAddr, uint8_t numBroadcastAddrs=0)
	Sets node and broadcast addresses. Calling this method will also enable address filtering.
int16_t	disableAddressFiltering ()
	Disables address filtering. Calling this method will also erase previously set addresses.
int16_t	setOOK (bool enableOOK)
	Enables/disables OOK modulation instead of FSK.
float	getRSSI () override
	Gets RSSI (Received Signal Strength Indicator) of the last received packet. In direct or asynchronous direct mode, returns the current RSSI level.
uint8_t	getLQI () const
	Gets LQI (Link Quality Indicator) of the last received packet.
size_t	getPacketLength (bool update=true) override
	Query modem for the packet length of received payload.
int16_t	fixedPacketLengthMode (uint8_t len=RADIOLIB_CC1101_MAX_PACKET_LENGTH)
	Set modem in fixed packet length mode.
int16_t	variablePacketLengthMode (uint8_t maxLen=RADIOLIB_CC1101_MAX_PACKET_LENGTH)
	Set modem in variable packet length mode.
int16_t	enableSyncWordFiltering (uint8_t maxErrBits=0, bool requireCarrierSense=false, bool repeatSync=false)
	Enable sync word filtering and generation.
int16_t	disableSyncWordFiltering (bool requireCarrierSense=false)
	Disable preamble and sync word filtering and generation.
int16_t	setCrcFiltering (bool enable=true)
	Enable CRC filtering and generation. The CRC used by CC1101 is 16 bits long, uses polynomial 0x8005, initial value 0xFFFF and disabled inversion.
int16_t	setPromiscuousMode (bool enable=true, bool requireCarrierSense=false)
	Set modem in "sniff" mode: no packet filtering (e.g., no preamble, sync word, address, CRC).
bool	getPromiscuousMode ()
	Get whether the modem is in promiscuous mode: no packet filtering (e.g., no preamble, sync word, address, CRC).
int16_t	setDataShaping (uint8_t sh) override
	Sets Gaussian filter bandwidth-time product that will be used for data shaping. Allowed value is RADIOLIB_SHAPING_0_5. Set to RADIOLIB_SHAPING_NONE to disable data shaping.
int16_t	setEncoding (uint8_t encoding) override
	Sets transmission encoding. Allowed values are RADIOLIB_ENCODING_NRZ, RADIOLIB_ENCODING_MANCHESTER, and RADIOLIB_ENCODING_WHITENING. Note that encoding on CC1101 is applied to the entire stream including preamble, sync word, and CRC.
void	setRfSwitchPins (uint32_t rxEn, uint32_t 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.
void	setRfSwitchTable (const uint32_t(&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.
uint8_t	randomByte () override
	Get one truly random byte from RSSI noise.
int16_t	getChipVersion ()
	Read version SPI register. Should return CC1101_VERSION_LEGACY (0x04) or CC1101_VERSION_CURRENT (0x14) if CC1101 is connected and working.
void	setDirectAction (void(*func)(void)) override
	Set interrupt service routine function to call when data bit is receveid in direct mode.
void	readBit (uint32_t pin) override
	Function to read and process data bit in direct reception mode.
int16_t	setDIOMapping (uint32_t pin, uint32_t value)
	Configure DIO pin mapping to get a given signal on a DIO pin (if available).
int16_t	transmit (const char *str, uint8_t addr=0)
	C-string transmit method.
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.
Public Member Functions inherited from PhysicalLayer
	PhysicalLayer ()
	Default constructor.
virtual	~PhysicalLayer ()=default
	Default destructor.
int16_t	transmit (const char *str, uint8_t addr=0)
	C-string transmit method.
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.
virtual int16_t	setSpreadingFactor (uint8_t sf)
	Sets LoRa spreading factor. Must be implemented in module class.
virtual int16_t	setBandwidth (uint32_t bw)
	Sets LoRa bandwidth. Must be implemented in module class.
virtual int16_t	setCodingRate (uint8_t cr, bool longInterleave=false)
	Sets LoRa coding rate denominator. Must be implemented in module class.
virtual int16_t	setLrFhssConfig (uint8_t bw, uint8_t cr, bool narrowGrid, uint8_t hdrCount=3, uint16_t hopSeed=0x13A)
	Sets LR-FHSS configuration. Must be implemented in module class.
virtual int16_t	invertIQ (bool enable)
	Set IQ inversion. Must be implemented in module class if the module supports it.
int16_t	setOutputPowerOffset (int8_t offset)
	Sets offset of the output power. Useful for devices where the radio has an external power amplifier, or of the RF system has a known loss between the radio and the antenna. NOTE: This method must be called BEFORE any calls to radio.begin() or radio.setOutputPower() for the offset to be applied!
int16_t	setOutputPowerOffset (const int8_t *lut, size_t steps)
	Sets offset of the output power. Useful for devices where the radio has an external power amplifier, or of the RF system has a known loss between the radio and the antenna. This overload allows to compensate a non-linear PA gain, dependant on the radio power output via a lookup table. NOTE: This method must be called BEFORE any calls to radio.begin() or radio.setOutputPower() for the offset to be applied!
virtual int16_t	setDataRate (DataRate_t dr, ModemType_t modem=RADIOLIB_MODEM_NONE)
	Set data rate. Must be implemented in module class if the module supports it.
virtual int16_t	checkDataRate (DataRate_t dr, ModemType_t modem=RADIOLIB_MODEM_NONE)
	Check the data rate can be configured by this module. Must be implemented in module class if the module supports it.
virtual float	getSNR ()
	Gets SNR (Signal to Noise Ratio) of the last received packet. Only available for LoRa modem.
virtual RadioLibTime_t	calculateTimeOnAir (ModemType_t modem, DataRate_t dr, PacketConfig_t pc, size_t len)
	Calculate the expected time-on-air for a given modem, data rate, packet configuration and payload size.
virtual RadioLibTime_t	getTimeOnAir (size_t len)
	Get expected time-on-air for a given size of payload.
virtual RadioLibTime_t	calculateRxTimeout (RadioLibTime_t timeoutUs)
	Calculate the timeout value for this specific module / series (in number of symbols or units of time).
uint32_t	getIrqMapped (RadioLibIrqFlags_t irq)
	Convert from radio-agnostic IRQ flags to radio-specific flags.
int16_t	checkIrq (RadioLibIrqType_t irq)
	Check whether a specific IRQ bit is set (e.g. RxTimeout, CadDone).
int16_t	setIrq (RadioLibIrqFlags_t irq)
	Set interrupt on specific IRQ bit(s) (e.g. RxTimeout, CadDone). Keep in mind that not all radio modules support all RADIOLIB_IRQ_ flags!
int16_t	clearIrq (RadioLibIrqFlags_t irq)
	Clear interrupt on a specific IRQ bit (e.g. RxTimeout, CadDone). Keep in mind that not all radio modules support all RADIOLIB_IRQ_ flags!
virtual uint32_t	getIrqFlags ()
	Read currently active IRQ flags. Must be implemented in module class.
virtual int16_t	setIrqFlags (uint32_t irq)
	Set interrupt on DIO1 to be sent on a specific IRQ bit (e.g. RxTimeout, CadDone). Must be implemented in module class.
virtual int16_t	clearIrqFlags (uint32_t irq)
	Clear interrupt on a specific IRQ bit (e.g. RxTimeout, CadDone). Must be implemented in module class.
virtual int16_t	startChannelScan ()
	Interrupt-driven channel activity detection method. Interrupt will be activated when packet is detected. Must be implemented in module class.
virtual int16_t	startChannelScan (const ChannelScanConfig_t &config)
	Interrupt-driven channel activity detection method. interrupt will be activated when packet is detected. Must be implemented in module class.
virtual int16_t	getChannelScanResult ()
	Read the channel scan result.
virtual int16_t	scanChannel ()
	Check whether the current communication channel is free or occupied. Performs CAD for LoRa modules, or RSSI measurement for FSK modules.
virtual int16_t	scanChannel (const ChannelScanConfig_t &config)
	Check whether the current communication channel is free or occupied. Performs CAD for LoRa modules, or RSSI measurement for FSK modules.
int32_t	random (int32_t max)
	Get truly random number in range 0 - max.
int32_t	random (int32_t min, int32_t max)
	Get truly random number in range min - max.
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.
int16_t	setDirectSyncWord (uint32_t syncWord, uint8_t len)
	Set sync word to be used to determine start of packet in direct reception mode.
int16_t	available ()
	Get the number of direct mode bytes currently available in buffer.
void	dropSync ()
	Forcefully drop synchronization.
uint8_t	read (bool drop=true)
	Get data from direct mode buffer.
virtual void	setIrqAction (void(*func)(void), bool rising=true)
	Sets interrupt service routine to call when IRQ is activated.
virtual void	clearIrqAction ()
	Clears interrupt service routine to call when IRQ is activated.
virtual int16_t	setModem (ModemType_t modem)
	Set modem for the radio to use. Will perform full reset and reconfigure the radio using its default parameters.
virtual int16_t	getModem (ModemType_t *modem)
	Get modem currently in use by the radio.
virtual int16_t	getMode (RadioModeType_t *mode)
	Read the operating mode the radio is in, as the chip reports it. Unlike PhysicalLayer::stagedMode, which is what was last asked of the radio, this reads the hardware, so a caller can tell a radio that has left a mode on its own - a receive that did not survive a frame, or a chip that lost its state - from one that is still in it.
virtual int16_t	stageMode (RadioModeType_t mode, RadioModeConfig_t *cfg)
	Stage mode of the radio to be launched later using launchMode.
virtual int16_t	launchMode ()
	Launch previously staged mode.
virtual int16_t	writeTxBuffer (const uint8_t *data, size_t len)
	Write a payload into the transmit buffer without staging or starting a transmission. This allows the payload write, which is the slowest part of starting a transmission, to be done while the radio is busy with something else - during a channel scan, for example. The transmission is staged afterwards by calling stageMode with RADIOLIB_RADIO_MODE_TX and RadioModeConfig_t::transmit.data set to NULL, which sets the packet parameters and the IRQ mapping for the payload already in the buffer; transmit.len must still be set to its length. The buffer holds exactly this payload after the call, whether or not one was written before.
virtual int16_t	clearTxBuffer ()
	Discard a payload previously written by writeTxBuffer. On radios whose transmit buffer is simply overwritten by the next write there is nothing to discard, and this reports success without touching the radio.
int16_t	calculateRxDutyCycle (size_t txPreLen, size_t rxPreLen, uint16_t minSymbols, DataRate_t dr, uint32_t wakePeriod, uint32_t *sleepPeriod)
	Calculates sleep and wake cycles for startReceiveDutyCycle methods so that the receiver should not miss any messages. Useful only for LoRa modems.
int8_t	getOutputPowerMin () const
	Get the minimum output power supported by the radio. This includes any previously configured PA offset.
int8_t	getOutputPowerMax () const
	Get the maximum output power supported by the radio. This includes any previously configured PA offset.

Additional Inherited Members
Static Public Member Functions inherited from PhysicalLayer
static float	getNumSymbols (DataRate_t dr, PacketConfig_t pc, size_t len)
	Convert from bytes to LoRa symbols.
Public Attributes inherited from PhysicalLayer
float	freqStep
	Frequency step of the synthesizer in Hz.
size_t	maxPacketLength
	Maximum length of packet that can be received by the module.
bool	resetOnStartup = true
	Whether to reset the module on startup. Setting to false allows to restore radio operation by calling begin after deep sleep mode on some platforms (like ESP32).

Detailed Description

Control class for CC1101 module.

Constructor & Destructor Documentation

◆ CC1101()

CC1101::CC1101 ( Module * module )

Default constructor.

Parameters

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

Member Function Documentation

◆ autoSetRxBandwidth()

int16_t CC1101::autoSetRxBandwidth ( )

calculates and sets Rx bandwidth based on the freq, baud and freq uncertainty. Reimplement of atlas0fd00m's (RfCat) CalculatePktChanBw function. Modified for worse ppm with the CC1101, and adjusted for the supportted CC1101 bw.

Returns: Status Codes

◆ begin()

int16_t CC1101::begin ( const ConfigFSK_t & config )

Initialization method for FSK modem.

Parameters

config Initialization configuration.

This method initializes the FSK modem with the specified configuration. Supports designated initializers when using C++14 or above.

Returns: Status Codes

◆ beginFSK4()

int16_t CC1101::beginFSK4 ( const ConfigFSK_t & config )

Initialization method for 4-FSK modem.

Parameters

config Initialization configuration.

This method initializes the FSK modem with the specified configuration. Supports designated initializers when using C++14 or above.

Returns: Status Codes

◆ disableAddressFiltering()

int16_t CC1101::disableAddressFiltering ( )

Disables address filtering. Calling this method will also erase previously set addresses.

Returns: Status Codes

◆ disableSyncWordFiltering()

int16_t CC1101::disableSyncWordFiltering ( bool requireCarrierSense = false )

Disable preamble and sync word filtering and generation.

Parameters

requireCarrierSense Require carrier sense above threshold.

Returns: Status Codes

◆ enableRxAfterTx()

int16_t CC1101::enableRxAfterTx ( bool enable = true )

Enables/disables automatic switch to reception after transmission. Uses the TXOFF_RX mode of CC1101.

Parameters

enable True to enable automatic switch

Returns: Status Codes

◆ enableSyncWordFiltering()

int16_t CC1101::enableSyncWordFiltering	(	uint8_t	maxErrBits = 0,
		bool	requireCarrierSense = false,
		bool	repeatSync = false )

Enable sync word filtering and generation.

Parameters

maxErrBits	Maximum number of allowed error bits in sync word.
requireCarrierSense	Require carrier sense above threshold in addition to sync word.
repeatSync	Repeat 16-bit sync word twice (enables the 32-bit sync word mode of CC1101).

Returns: Status Codes

◆ finishReceive()

int16_t CC1101::finishReceive ( )

overridevirtual

Clean up after reception is done.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ finishTransmit()

int16_t CC1101::finishTransmit ( )

overridevirtual

Clean up after transmission is done.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ fixedPacketLengthMode()

int16_t CC1101::fixedPacketLengthMode ( uint8_t len = RADIOLIB_CC1101_MAX_PACKET_LENGTH )

Set modem in fixed packet length mode.

Parameters

len	Packet length.

Returns: Status Codes

◆ getChipVersion()

int16_t CC1101::getChipVersion ( )

Read version SPI register. Should return CC1101_VERSION_LEGACY (0x04) or CC1101_VERSION_CURRENT (0x14) if CC1101 is connected and working.

Returns: Version register contents or Status Codes

◆ getFrequencyDeviation()

int16_t CC1101::getFrequencyDeviation ( uint32_t * freqDev )

Gets frequency deviation.

Parameters

[out] freqDev Pointer to variable where to save the frequency deviation.

Returns: Status Codes

◆ getLQI()

uint8_t CC1101::getLQI ( ) const

Gets LQI (Link Quality Indicator) of the last received packet.

Returns: Last packet LQI (lower is better).

◆ getPacketLength()

size_t CC1101::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.

◆ getPromiscuousMode()

bool CC1101::getPromiscuousMode ( )

Get whether the modem is in promiscuous mode: no packet filtering (e.g., no preamble, sync word, address, CRC).

Returns: Whether the modem is in promiscuous mode.

◆ getRSSI()

float CC1101::getRSSI ( )

overridevirtual

Gets RSSI (Received Signal Strength Indicator) of the last received packet. In direct or asynchronous direct mode, returns the current RSSI level.

Returns: RSSI in dBm.

Reimplemented from PhysicalLayer.

◆ randomByte()

uint8_t CC1101::randomByte ( )

overridevirtual

Get one truly random byte from RSSI noise.

Returns: TRNG byte.

Reimplemented from PhysicalLayer.

◆ readBit()

void CC1101::readBit ( uint32_t pin )

overridevirtual

Function to read and process data bit in direct reception mode.

Parameters

pin	Pin on which to read.

Reimplemented from PhysicalLayer.

◆ readData()

int16_t CC1101::readData	(	uint8_t *	data,
		size_t	len )

overridevirtual

Reads data received after calling startReceive method. When the packet length is not known in advance, getPacketLength method must be called BEFORE calling readData!

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()

int16_t CC1101::receive	(	uint8_t *	data,
		size_t	len,
		RadioLibTime_t	timeout = 0 )

overridevirtual

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

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.
timeout	Reception timeout in milliseconds. If set to 0, timeout period will be calculated automatically based on the radio configuration.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ receiveDirect()

int16_t CC1101::receiveDirect ( )

overridevirtual

Starts synchronous direct mode reception.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ receiveDirectAsync()

int16_t CC1101::receiveDirectAsync ( )

Starts asynchronous direct mode reception.

Returns: Status Codes

◆ setBitRate()

int16_t CC1101::setBitRate ( uint32_t br )

overridevirtual

Sets bit rate. Allowed values range from 25 bps to 600 kbps.

Parameters

br	Bit rate to be set in kbps.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ setBitRateTolerance()

int16_t CC1101::setBitRateTolerance ( uint8_t brt )

Sets bit rate tolerance in BSCFG register. Allowed values are 0:(0%), 1(3,125%), 2:(6,25%) and 3:(12,5%).

Parameters

brt	Bit rate tolerance to be set.

Returns: Status Codes

◆ setCrcFiltering()

int16_t CC1101::setCrcFiltering ( bool enable = true )

Enable CRC filtering and generation. The CRC used by CC1101 is 16 bits long, uses polynomial 0x8005, initial value 0xFFFF and disabled inversion.

Parameters

enable Set or unset CRC generation and filtering.

Returns: Status Codes

◆ setDataShaping()

int16_t CC1101::setDataShaping ( uint8_t sh )

overridevirtual

Sets Gaussian filter bandwidth-time product that will be used for data shaping. Allowed value is RADIOLIB_SHAPING_0_5. Set to RADIOLIB_SHAPING_NONE to disable data shaping.

Parameters

sh	Gaussian shaping bandwidth-time product that will be used for data shaping.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ setDIOMapping()

int16_t CC1101::setDIOMapping	(	uint32_t	pin,
		uint32_t	value )

Configure DIO pin mapping to get a given signal on a DIO pin (if available).

Parameters

pin	Pin number onto which a signal is to be placed.
value	The value that indicates which function to place on that pin. See chip datasheet for details.

Returns: Status Codes

◆ setDirectAction()

void CC1101::setDirectAction ( void(* func )(void) )

overridevirtual

Set interrupt service routine function to call when data bit is receveid in direct mode.

Parameters

func	Pointer to interrupt service routine.

Reimplemented from PhysicalLayer.

◆ setEncoding()

int16_t CC1101::setEncoding ( uint8_t encoding )

overridevirtual

Sets transmission encoding. Allowed values are RADIOLIB_ENCODING_NRZ, RADIOLIB_ENCODING_MANCHESTER, and RADIOLIB_ENCODING_WHITENING. Note that encoding on CC1101 is applied to the entire stream including preamble, sync word, and CRC.

Parameters

encoding Encoding to be used.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ setFrequency()

int16_t CC1101::setFrequency ( uint32_t freq )

overridevirtual

Sets carrier frequency. Allowed values are in bands 300 to 348 MHz, 387 to 464 MHz and 779 to 928 MHz.

Parameters

freq	Carrier frequency to be set in Hz.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ setFrequencyDeviation()

int16_t CC1101::setFrequencyDeviation ( uint32_t freqDev )

overridevirtual

Sets frequency deviation. Allowed values range from 1.587 to 380.8 kHz.

Parameters

freqDev Frequency deviation to be set in Hz.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ setGdo0Action()

void CC1101::setGdo0Action	(	void(*	func )(void),
		uint32_t	dir )

Sets interrupt service routine to call when GDO0 activates.

Parameters

func	ISR to call.
dir	Signal change direction.

◆ setGdo2Action()

void CC1101::setGdo2Action	(	void(*	func )(void),
		uint32_t	dir )

Sets interrupt service routine to call when GDO2 activates.

Parameters

func	ISR to call.
dir	Signal change direction.

◆ setNodeAddress()

int16_t CC1101::setNodeAddress	(	uint8_t	nodeAddr,
		uint8_t	numBroadcastAddrs = 0 )

Sets node and broadcast addresses. Calling this method will also enable address filtering.

Parameters

nodeAddr	Node address to be set.
numBroadcastAddrs	Number of broadcast addresses to be used. Can be set to 0 (no broadcast), 1 (broadcast at 0x00) or 2 (broadcast at 0x00 and 0xFF).

Returns: Status Codes

◆ setOOK()

int16_t CC1101::setOOK ( bool enableOOK )

Enables/disables OOK modulation instead of FSK.

Parameters

enableOOK Enable (true) or disable (false) OOK.

Returns: Status Codes

◆ setOutputPower()

int16_t CC1101::setOutputPower ( int8_t pwr )

overridevirtual

Sets output power. Allowed values are -30, -20, -15, -10, 0, 5, 7 or 10 dBm.

Parameters

pwr	Output power to be set in dBm.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ setPreambleLength()

int16_t CC1101::setPreambleLength	(	size_t	preambleLength,
		size_t	qualityThreshold = 0xFFFFFFFF )

overridevirtual

Sets preamble length.

Parameters

preambleLength	Preamble length to be set (in bits), allowed values: 16, 24, 32, 48, 64, 96, 128 and 192.
qualityThreshold	Preamble quality threshold (PQT) to set. Defaults to preambleLength - 1.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ setPromiscuousMode()

int16_t CC1101::setPromiscuousMode	(	bool	enable = true,
		bool	requireCarrierSense = false )

Set modem in "sniff" mode: no packet filtering (e.g., no preamble, sync word, address, CRC).

Parameters

enable	Set or unset promiscuous mode.
requireCarrierSense	Set carriersense required above threshold, defaults to false.

Returns: Status Codes

◆ setRfSwitchPins()

void CC1101::setRfSwitchPins	(	uint32_t	rxEn,
		uint32_t	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 CC1101::setRfSwitchTable	(	const uint32_t(&)	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 5 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 uint32_t rfswitch_pins[] =
                       {PA0,  PA1,  RADIOLIB_NC, RADIOLIB_NC, 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);
  ...
}

◆ setRxBandwidth()

int16_t CC1101::setRxBandwidth ( uint32_t rxBw )

Sets receiver bandwidth. Allowed values are 58, 68, 81, 102, 116, 135, 162, 203, 232, 270, 325, 406, 464, 541, 650 and 812 kHz.

Parameters

rxBw	GFSK receiver bandwidth to be set in Hz. In case the provided value is not an exact match with the supported values, the closest match will be selected.

Returns: Status Codes

◆ setSyncWord() [1/3]

int16_t CC1101::setSyncWord	(	const uint8_t *	syncWord,
		uint8_t	len,
		uint8_t	maxErrBits = 0,
		bool	requireCarrierSense = false,
		bool	repeatSync = false )

Sets 1 or 2 bytes of sync word.

Parameters

syncWord	Pointer to the array of sync word bytes.
len	Sync word length in bytes.
maxErrBits	Maximum allowed number of bit errors in received sync word. Defaults to 0.
requireCarrierSense	Require carrier sense above threshold in addition to sync word.
repeatSync	Repeat 16-bit sync word twice (enables the 32-bit sync word mode of CC1101).

Returns: Status Codes

◆ setSyncWord() [2/3]

int16_t CC1101::setSyncWord	(	uint8_t *	sync,
		size_t	len )

overridevirtual

Set 1 or 2 bytes of sync word.

Parameters

sync	Pointer to the sync word.
len	Sync word length in bytes. Maximum length depends on the module used.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ setSyncWord() [3/3]

int16_t CC1101::setSyncWord	(	uint8_t	syncH,
		uint8_t	syncL,
		uint8_t	maxErrBits = 0,
		bool	requireCarrierSense = false,
		bool	repeatSync = false )

Sets 16-bit sync word as a two byte value.

Parameters

syncH	MSB of the sync word.
syncL	LSB of the sync word.
maxErrBits	Maximum allowed number of bit errors in received sync word. Defaults to 0.
requireCarrierSense	Require carrier sense above threshold in addition to sync word.
repeatSync	Repeat 16-bit sync word twice (enables the 32-bit sync word mode of CC1101).

Returns: Status Codes

◆ sleep()

int16_t CC1101::sleep ( )

overridevirtual

Sets the module to sleep mode.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ standby() [1/2]

int16_t CC1101::standby ( )

overridevirtual

Sets the module to standby mode.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ standby() [2/2]

int16_t CC1101::standby ( uint8_t mode )

overridevirtual

Sets the module to standby.

Parameters

mode	Standby mode to be used. No effect, implemented only for PhysicalLayer compatibility.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ startReceive() [1/2]

int16_t CC1101::startReceive ( )

overridevirtual

Interrupt-driven receive method. GDO0 will be activated when full packet is received.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ startReceive() [2/2]

int16_t CC1101::startReceive	(	uint32_t	timeout,
		uint32_t	irqFlags,
		uint32_t	irqMask,
		size_t	len )

overridevirtual

Interrupt-driven receive method, implemented for compatibility with PhysicalLayer.

Parameters

timeout	Ignored.
irqFlags	Ignored.
irqMask	Ignored.
len	Ignored.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ startTransmit() [1/2]

int16_t PhysicalLayer::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.

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() [2/2]

int16_t CC1101::startTransmit	(	const uint8_t *	data,
		size_t	len,
		uint8_t	addr = 0 )

overridevirtual

Interrupt-driven binary transmit method for packets less than 64 bytes. Method blocks for packets longer than 64 bytes up to a 255 byte limit, until the last bytes are placed in the FIFO. Some limitations and issues apply; see discussion: https://github.com/jgromes/RadioLib/discussions/1138 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. Will only be added if address filtering was enabled.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ transmit() [1/2]

int16_t PhysicalLayer::transmit	(	const char *	str,
		uint8_t	addr = 0 )

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() [2/2]

int16_t CC1101::transmit	(	const 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. Will only be added if address filtering was enabled.

Returns: Status Codes

Reimplemented from PhysicalLayer.

◆ transmitDirect()

int16_t CC1101::transmitDirect ( uint32_t frf = 0 )

overridevirtual

Starts synchronous 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.

◆ transmitDirectAsync()

int16_t CC1101::transmitDirectAsync ( uint32_t frf = 0 )

Starts asynchronous direct mode transmission.

Parameters

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

Returns: Status Codes

◆ variablePacketLengthMode()

int16_t CC1101::variablePacketLengthMode ( uint8_t maxLen = RADIOLIB_CC1101_MAX_PACKET_LENGTH )

Set modem in variable packet length mode.

Parameters

maxLen Maximum packet length.

Returns: Status Codes

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

src/modules/CC1101/CC1101.h
src/modules/CC1101/CC1101.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ CC1101()

Member Function Documentation

◆ autoSetRxBandwidth()

◆ begin()

◆ beginFSK4()

◆ disableAddressFiltering()

◆ disableSyncWordFiltering()

◆ enableRxAfterTx()

◆ enableSyncWordFiltering()

◆ finishReceive()

◆ finishTransmit()

◆ fixedPacketLengthMode()

◆ getChipVersion()

◆ getFrequencyDeviation()

◆ getLQI()

◆ getPacketLength()

◆ getPromiscuousMode()

◆ getRSSI()

◆ randomByte()

◆ readBit()

◆ readData()

◆ receive()

◆ receiveDirect()

◆ receiveDirectAsync()

◆ setBitRate()

◆ setBitRateTolerance()

◆ setCrcFiltering()

◆ setDataShaping()

◆ setDIOMapping()

◆ setDirectAction()

◆ setEncoding()

◆ setFrequency()

◆ setFrequencyDeviation()

◆ setGdo0Action()

◆ setGdo2Action()

◆ setNodeAddress()

◆ setOOK()

◆ setOutputPower()

◆ setPreambleLength()

◆ setPromiscuousMode()

◆ setRfSwitchPins()

◆ setRfSwitchTable()

Example

◆ setRxBandwidth()

◆ setSyncWord() [1/3]

◆ setSyncWord() [2/3]

◆ setSyncWord() [3/3]

◆ sleep()

◆ standby() [1/2]

◆ standby() [2/2]

◆ startReceive() [1/2]

◆ startReceive() [2/2]

◆ startTransmit() [1/2]

◆ startTransmit() [2/2]

◆ transmit() [1/2]

◆ transmit() [2/2]

◆ transmitDirect()

◆ transmitDirectAsync()

◆ variablePacketLengthMode()