RadioLib
Universal wireless communication library for Arduino
SX1231 Class Reference

Control class for SX1231 module. Overrides some methods from RF69 due to different register values. More...

#include <SX1231.h>

Inheritance diagram for SX1231:
RF69 PhysicalLayer SX1233

Public Member Functions

 SX1231 (Module *mod)
 Default constructor. More...
 
int16_t begin (float freq=434.0, float br=4.8, float freqDev=5.0, float rxBw=125.0, int8_t power=10, uint8_t preambleLen=16)
 Initialization method. More...
 
- Public Member Functions inherited from RF69
 RF69 (Module *module)
 Default constructor. More...
 
int16_t begin (float freq=RADIOLIB_RF69_DEFAULT_FREQ, float br=RADIOLIB_RF69_DEFAULT_BR, float freqDev=RADIOLIB_RF69_DEFAULT_FREQDEV, float rxBw=RADIOLIB_RF69_DEFAULT_RXBW, int8_t pwr=RADIOLIB_RF69_DEFAULT_POWER, uint8_t preambleLen=RADIOLIB_RF69_DEFAULT_PREAMBLELEN)
 Initialization method. More...
 
void reset ()
 Reset method. Will reset the chip to the default state using RST pin.
 
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 sleep ()
 Sets the module to sleep mode. More...
 
int16_t standby () override
 Sets the module to standby mode. More...
 
int16_t standby (uint8_t mode) override
 Sets the module to standby. More...
 
int16_t transmitDirect (uint32_t frf=0) override
 Starts direct mode transmission. More...
 
int16_t receiveDirect () override
 Starts direct mode reception. More...
 
int16_t packetMode ()
 Stops direct mode. It is required to call this method to switch from direct transmissions to packet-based transmissions.
 
void setAESKey (uint8_t *key)
 Sets AES key. More...
 
int16_t enableAES ()
 Enables AES encryption. More...
 
int16_t disableAES ()
 Disables AES encryption. More...
 
void setDio0Action (void(*func)(void))
 Sets interrupt service routine to call when DIO0 activates. More...
 
void clearDio0Action ()
 Clears interrupt service routine to call when DIO0 activates.
 
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.
 
void setPacketReceivedAction (void(*func)(void))
 Sets interrupt service routine to call when a packet is received. More...
 
void clearPacketReceivedAction ()
 Clears interrupt service routine to call when a packet is received.
 
void setPacketSentAction (void(*func)(void))
 Sets interrupt service routine to call when a packet is sent. More...
 
void clearPacketSentAction ()
 Clears interrupt service routine to call when a packet is sent.
 
void setFifoEmptyAction (void(*func)(void))
 Set interrupt service routine function to call when FIFO is empty. More...
 
void clearFifoEmptyAction ()
 Clears interrupt service routine to call when FIFO is empty.
 
void setFifoFullAction (void(*func)(void))
 Set interrupt service routine function to call when FIFO is full. More...
 
void clearFifoFullAction ()
 Clears interrupt service routine to call when FIFO is full.
 
bool fifoAdd (uint8_t *data, int totalLen, int *remLen)
 Set interrupt service routine function to call when FIFO is empty. More...
 
bool fifoGet (volatile uint8_t *data, int totalLen, volatile int *rcvLen)
 Set interrupt service routine function to call when FIFO is sufficiently full to read. More...
 
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 ()
 Interrupt-driven receive method. GDO0 will be activated when full packet is received. More...
 
int16_t startReceive (uint32_t timeout, uint16_t irqFlags, uint16_t irqMask, size_t len)
 Interrupt-driven receive method, implemented for compatibility with PhysicalLayer. More...
 
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! More...
 
int16_t setFrequency (float freq)
 Sets carrier frequency. Allowed values are in bands 290.0 to 340.0 MHz, 431.0 to 510.0 MHz and 862.0 to 1020.0 MHz. More...
 
int16_t getFrequency (float *freq)
 Gets carrier frequency. More...
 
int16_t setBitRate (float br)
 Sets bit rate. Allowed values range from 0.5 to 300.0 kbps. More...
 
int16_t setRxBandwidth (float rxBw)
 Sets receiver bandwidth. Allowed values are 2.6, 3.1, 3.9, 5.2, 6.3, 7.8, 10.4, 12.5, 15.6, 20.8, 25.0, 31.3, 41.7, 50.0, 62.5, 83.3, 100.0, 125.0, 166.7, 200.0, 250.0, 333.3, 400.0 and 500.0 kHz. More...
 
int16_t setFrequencyDeviation (float freqDev) override
 Sets frequency deviation. More...
 
int16_t getFrequencyDeviation (float *freqDev)
 Gets frequency deviation. More...
 
int16_t setOutputPower (int8_t pwr, bool highPower=false)
 Sets output power. Allowed values range from -18 to 13 dBm for low power modules (RF69C/CW) or -2 to 20 dBm (RF69H/HC/HCW). More...
 
int16_t setSyncWord (uint8_t *syncWord, size_t len, uint8_t maxErrBits=0)
 Sets sync word. Up to 8 bytes can be set as sync word. More...
 
int16_t setPreambleLength (uint8_t preambleLen)
 Sets preamble length. More...
 
int16_t setNodeAddress (uint8_t nodeAddr)
 Sets node address. Calling this method will also enable address filtering for node address only. More...
 
int16_t setBroadcastAddress (uint8_t broadAddr)
 Sets broadcast address. Calling this method will also enable address filtering for node and broadcast address. More...
 
int16_t disableAddressFiltering ()
 Disables address filtering. Calling this method will also erase previously set addresses. More...
 
void setAmbientTemperature (int16_t tempAmbient)
 Sets ambient temperature. Required to correct values from on-board temperature sensor. More...
 
int16_t getTemperature ()
 Measures temperature. More...
 
size_t getPacketLength (bool update=true) override
 Query modem for the packet length of received payload. More...
 
int16_t setOOK (bool enable)
 Enables/disables OOK modulation instead of FSK. Note: This function calls setRxBandwidth again, since register values differ based on OOK mode being enabled/disabled. More...
 
int16_t setOokThresholdType (uint8_t type)
 Selects the type of threshold in the OOK data slicer. More...
 
int16_t setOokFixedThreshold (uint8_t value)
 Fixed threshold for the Data Slicer in OOK mode or floor threshold for the Data Slicer in OOK when Peak mode is used. More...
 
int16_t setOokPeakThresholdDecrement (uint8_t value)
 Period of decrement of the RSSI threshold in the OOK demodulator. More...
 
int16_t fixedPacketLengthMode (uint8_t len=RADIOLIB_RF69_MAX_PACKET_LENGTH)
 Set modem in fixed packet length mode. More...
 
int16_t variablePacketLengthMode (uint8_t maxLen=RADIOLIB_RF69_MAX_PACKET_LENGTH)
 Set modem in variable packet length mode. More...
 
int16_t enableSyncWordFiltering (uint8_t maxErrBits=0)
 Enable sync word filtering and generation. More...
 
int16_t disableSyncWordFiltering ()
 Disable preamble and sync word filtering and generation. More...
 
int16_t enableContinuousModeBitSync ()
 Enable Bit synchronization in continuous mode. More...
 
int16_t disableContinuousModeBitSync ()
 Disable Bit synchronization in continuous mode. More...
 
int16_t setCrcFiltering (bool crcOn=true)
 Enable CRC filtering and generation. More...
 
int16_t setPromiscuousMode (bool enable=true)
 Set modem in "sniff" mode: no packet filtering (e.g., no preamble, sync word, address, CRC). More...
 
int16_t setDataShaping (uint8_t sh) override
 Sets Gaussian filter bandwidth-time product that will be used for data shaping. Allowed values are RADIOLIB_SHAPING_0_3, RADIOLIB_SHAPING_0_5 or RADIOLIB_SHAPING_1_0. Set to RADIOLIB_SHAPING_NONE to disable data shaping. More...
 
int16_t setEncoding (uint8_t encoding) override
 Sets transmission encoding. Allowed values are RADIOLIB_ENCODING_NRZ, RADIOLIB_ENCODING_MANCHESTER and RADIOLIB_ENCODING_WHITENING. More...
 
int16_t setLnaTestBoost (bool value)
 Enable/disable LNA Boost mode (disabled by default). More...
 
float getRSSI ()
 Gets RSSI (Recorded Signal Strength Indicator) of the last received packet. More...
 
int16_t setRSSIThreshold (float dbm)
 Sets the RSSI value above which the RSSI interrupt is signaled. More...
 
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. More...
 
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. More...
 
uint8_t randomByte ()
 Get one truly random byte from RSSI noise. More...
 
int16_t getChipVersion ()
 Read version SPI register. Should return RF69_CHIP_VERSION (0x24) if SX127x is connected and working. More...
 
void setDirectAction (void(*func)(void))
 Set interrupt service routine function to call when data bit is received in direct mode. More...
 
void readBit (uint32_t pin)
 Function to read and process data bit in direct reception mode. More...
 
int16_t setDIOMapping (uint32_t pin, uint32_t value)
 Configure DIO pin mapping to get a given signal on a DIO pin (if available). 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...
 
virtual int16_t receive (uint8_t *data, size_t len)
 Binary receive method. Must be implemented in module class. 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...
 
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 step, size_t maxLen)
 Default constructor. More...
 
int16_t transmit (const char *str, uint8_t addr=0)
 C-string transmit method. 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 invertIQ (bool enable)
 Set IQ inversion. Must be implemented in module class if the module supports it. More...
 
virtual int16_t setOutputPower (int8_t power)
 Set output power. Must be implemented in module class if the module supports it. More...
 
virtual int16_t checkOutputPower (int8_t power, int8_t *clipped)
 Check if output power is configurable. Must be implemented in module class if the module supports it. More...
 
virtual int16_t setSyncWord (uint8_t *sync, size_t len)
 Set sync word. Must be implemented in module class if the module supports it. More...
 
virtual int16_t setPreambleLength (size_t len)
 Set preamble length. Must be implemented in module class if the module supports it. More...
 
virtual int16_t setDataRate (DataRate_t dr)
 Set data. Must be implemented in module class if the module supports it. More...
 
virtual int16_t checkDataRate (DataRate_t dr)
 Check the data rate can be configured by this module. Must be implemented in module class if the module supports it. More...
 
float getFreqStep () const
 Gets the module frequency step size that was set in constructor. More...
 
virtual float getSNR ()
 Gets SNR (Signal to Noise Ratio) of the last received packet. Only available for LoRa modem. More...
 
virtual RadioLibTime_t getTimeOnAir (size_t len)
 Get expected time-on-air for a given size of payload. More...
 
virtual RadioLibTime_t calculateRxTimeout (RadioLibTime_t timeoutUs)
 Calculate the timeout value for this specific module / series (in number of symbols or units of time) More...
 
virtual int16_t irqRxDoneRxTimeout (uint16_t &irqFlags, uint16_t &irqMask)
 Create the flags that make up RxDone and RxTimeout used for receiving downlinks. More...
 
virtual bool isRxTimeout ()
 Check whether the IRQ bit for RxTimeout is set. More...
 
virtual int16_t startChannelScan ()
 Interrupt-driven channel activity detection method. interrupt will be activated when packet is detected. Must be implemented in module class. More...
 
virtual int16_t getChannelScanResult ()
 Read the channel scan result. More...
 
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. 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 void setChannelScanAction (void(*func)(void))
 Sets interrupt service routine to call when a channel scan is finished. More...
 
virtual void clearChannelScanAction ()
 Clears interrupt service routine to call when a channel scan is finished.
 

Detailed Description

Control class for SX1231 module. Overrides some methods from RF69 due to different register values.

Constructor & Destructor Documentation

◆ SX1231()

SX1231::SX1231 ( Module mod)

Default constructor.

Parameters
modInstance of Module that will be used to communicate with the radio.

Member Function Documentation

◆ begin()

int16_t SX1231::begin ( float  freq = 434.0,
float  br = 4.8,
float  freqDev = 5.0,
float  rxBw = 125.0,
int8_t  power = 10,
uint8_t  preambleLen = 16 
)

Initialization method.

Parameters
freqCarrier frequency in MHz. Defaults to 434.0 MHz.
brBit rate to be used in kbps. Defaults to 4.8 kbps.
freqDevFrequency deviation from carrier frequency in kHz Defaults to 5.0 kHz.
rxBwReceiver bandwidth in kHz. Defaults to 125.0 kHz.
powerOutput power in dBm. Defaults to 10 dBm.
preambleLenPreamble Length in bits. Defaults to 16 bits.
Returns
Status Codes

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