RadioLib
Universal wireless communication library for Arduino
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Base class for SX127x series. All derived classes for SX127x (e.g. SX1278 or SX1272) inherit from this base class. This class should not be instantiated directly from Arduino sketch, only from its derived classes. More...
#include <SX127x.h>
Public Member Functions | |
SX127x (Module *mod) | |
Default constructor. Called internally when creating new LoRa instance. More... | |
int16_t | begin (uint8_t *chipVersions, uint8_t numVersions, uint8_t syncWord, uint16_t preambleLength) |
Initialization method. Will be called with appropriate parameters when calling initialization method from derived class. More... | |
virtual void | reset ()=0 |
Reset method. Will reset the chip to the default state using RST pin. Declared pure virtual since SX1272 and SX1278 implementations differ. | |
int16_t | beginFSK (uint8_t *chipVersions, uint8_t numVersions, float freqDev, float rxBw, uint16_t preambleLength, bool enableOOK) |
Initialization method for FSK modem. Will be called with appropriate parameters when calling FSK initialization method from derived class. More... | |
int16_t | transmit (const uint8_t *data, size_t len, uint8_t addr=0) override |
Binary transmit method. Will transmit arbitrary binary data up to 255 bytes long using LoRa or up to 63 bytes using FSK modem. For overloads to transmit Arduino String or C-string, see PhysicalLayer::transmit. More... | |
int16_t | receive (uint8_t *data, size_t len) override |
Binary receive method. Will attempt to receive arbitrary binary data up to 255 bytes long using LoRa or up to 63 bytes using FSK modem. For overloads to receive Arduino String, see PhysicalLayer::receive. More... | |
int16_t | scanChannel () override |
Performs scan for valid LoRa preamble in the current channel. More... | |
int16_t | sleep () override |
Sets the LoRa module to sleep to save power. Module will not be able to transmit or receive any data while in sleep mode. Module will wake up automatically when methods like transmit or receive are called. More... | |
int16_t | standby () override |
Sets the LoRa module to standby. More... | |
int16_t | standby (uint8_t mode) override |
Sets the LoRa module to standby. More... | |
int16_t | transmitDirect (uint32_t frf=0) override |
Enables direct transmission mode on pins DIO1 (clock) and DIO2 (data). While in direct mode, the module will not be able to transmit or receive packets. Can only be activated in FSK mode. More... | |
int16_t | receiveDirect () override |
Enables direct reception mode on pins DIO1 (clock) and DIO2 (data). While in direct mode, the module will not be able to transmit or receive packets. Can only be activated in FSK mode. More... | |
int16_t | packetMode () |
Disables direct mode and enables packet mode, allowing the module to receive packets. Can only be activated in FSK mode. More... | |
void | setDio0Action (void(*func)(void), uint32_t dir) |
Set interrupt service routine function to call when DIO0 activates. More... | |
void | clearDio0Action () |
Clears interrupt service routine to call when DIO0 activates. | |
void | setDio1Action (void(*func)(void), uint32_t dir) |
Set interrupt service routine function to call when DIO1 activates. More... | |
void | clearDio1Action () |
Clears interrupt service routine to call when DIO1 activates. | |
void | setPacketReceivedAction (void(*func)(void)) override |
Sets interrupt service routine to call when a packet is received. More... | |
void | clearPacketReceivedAction () override |
Clears interrupt service routine to call when a packet is received. | |
void | setPacketSentAction (void(*func)(void)) override |
Sets interrupt service routine to call when a packet is sent. More... | |
void | clearPacketSentAction () override |
Clears interrupt service routine to call when a packet is sent. | |
void | setChannelScanAction (void(*func)(void)) override |
Sets interrupt service routine to call when a channel scan is finished. More... | |
void | clearChannelScanAction () override |
Clears interrupt service routine to call when a channel scan is finished. | |
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 | setFifoThreshold (uint8_t threshold) |
Set FIFO threshold level. Be aware that threshold is also set in setFifoFullAction method. setFifoThreshold method must be called AFTER calling setFifoFullAction! More... | |
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 (const uint8_t *data, size_t len, uint8_t addr=0) override |
Interrupt-driven binary transmit method. Will start transmitting arbitrary binary data up to 255 bytes long using LoRa or up to 63 bytes using FSK modem. More... | |
int16_t | finishTransmit () override |
Clean up after transmission is done. More... | |
int16_t | startReceive () override |
Interrupt-driven receive method with default parameters. Implemented for compatibility with PhysicalLayer. More... | |
int16_t | startReceive (uint32_t timeout, RadioLibIrqFlags_t irqFlags=RADIOLIB_IRQ_RX_DEFAULT_FLAGS, RadioLibIrqFlags_t irqMask=RADIOLIB_IRQ_RX_DEFAULT_MASK, size_t len=0) override |
Interrupt-driven receive method, implemented for compatibility with PhysicalLayer. More... | |
int16_t | readData (uint8_t *data, size_t len) override |
Reads data that was 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 | startChannelScan () override |
Interrupt-driven channel activity detection method. DIO0 will be activated when LoRa preamble is detected. DIO1 will be activated if there's no preamble detected before timeout. More... | |
int16_t | getChannelScanResult () override |
Read the channel scan result. More... | |
int16_t | setSyncWord (uint8_t syncWord) |
Sets LoRa sync word. Only available in LoRa mode. More... | |
int16_t | setCurrentLimit (uint8_t currentLimit) |
Sets current limit for over current protection at transmitter amplifier. Allowed values range from 45 to 120 mA in 5 mA steps and 120 to 240 mA in 10 mA steps. More... | |
int16_t | setPreambleLength (size_t preambleLength) override |
Sets LoRa or FSK preamble length. Allowed values range from 6 to 65535 in LoRa mode or 0 to 65535 in FSK mode. More... | |
int16_t | invertPreamble (bool enable) |
Invert FSK preamble polarity. The default (non-inverted) is 0x55, the inverted is 0xAA. More... | |
float | getFrequencyError (bool autoCorrect=false) |
Gets frequency error of the latest received packet. More... | |
float | getAFCError () |
Gets current AFC error. More... | |
float | getSNR () override |
Gets signal-to-noise ratio of the latest received packet. Only available in LoRa mode. More... | |
float | getDataRate () const |
Get data rate of the latest transmitted packet. More... | |
int16_t | setFrequencyDeviation (float freqDev) override |
Sets FSK frequency deviation from carrier frequency. Allowed values depend on bit rate setting and must be lower than 200 kHz. Only available in FSK mode. More... | |
int16_t | setRxBandwidth (float rxBw) |
Sets FSK receiver bandwidth. Allowed values range from 2.6 to 250 kHz. Only available in FSK mode. More... | |
int16_t | setAFCBandwidth (float afcBw) |
Sets FSK automatic frequency correction bandwidth. Allowed values range from 2.6 to 250 kHz. Only available in FSK mode. More... | |
int16_t | setAFC (bool isEnabled) |
Enables or disables FSK automatic frequency correction(AFC) More... | |
int16_t | setAFCAGCTrigger (uint8_t trigger) |
Controls trigger of AFC and AGC. More... | |
int16_t | setSyncWord (uint8_t *syncWord, size_t len) override |
Sets FSK sync word. Allowed sync words are up to 8 bytes long and can not contain null bytes. Only available in FSK mode. More... | |
int16_t | setNodeAddress (uint8_t nodeAddr) |
Sets FSK node address. Calling this method will enable address filtering. Only available in FSK mode. More... | |
int16_t | setBroadcastAddress (uint8_t broadAddr) |
Sets FSK broadcast address. Calling this method will enable address filtering. Only available in FSK mode. More... | |
int16_t | disableAddressFiltering () |
Disables FSK address filtering. More... | |
int16_t | setOOK (bool enableOOK) |
Enables/disables OOK modulation instead of FSK. More... | |
int16_t | setOokThresholdType (uint8_t type) |
Selects the type of threshold in the OOK data slicer. More... | |
int16_t | setOokPeakThresholdDecrement (uint8_t value) |
Period of decrement of the RSSI threshold in the OOK demodulator. More... | |
int16_t | setOokFixedOrFloorThreshold (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 | setOokPeakThresholdStep (uint8_t value) |
Size of each decrement of the RSSI threshold in the OOK demodulator. More... | |
int16_t | enableBitSync () |
Enable Bit synchronizer. More... | |
int16_t | disableBitSync () |
Disable Bit synchronizer (not allowed in Packet mode). More... | |
size_t | getPacketLength (bool update=true) override |
Query modem for the packet length of received payload. More... | |
int16_t | fixedPacketLengthMode (uint8_t len=RADIOLIB_SX127X_MAX_PACKET_LENGTH_FSK) |
Set modem in fixed packet length mode. Available in FSK mode only. More... | |
int16_t | variablePacketLengthMode (uint8_t maxLen=RADIOLIB_SX127X_MAX_PACKET_LENGTH_FSK) |
Set modem in variable packet length mode. Available in FSK mode only. More... | |
float | getNumSymbols (size_t len) |
Convert from bytes to LoRa symbols. More... | |
RadioLibTime_t | getTimeOnAir (size_t len) override |
Get expected time-on-air for a given size of payload. More... | |
RadioLibTime_t | calculateRxTimeout (RadioLibTime_t timeoutUs) override |
Calculate the timeout value for this specific module / series (in number of symbols or units of time) More... | |
uint32_t | getIrqFlags () override |
Read currently active IRQ flags. More... | |
int16_t | setIrqFlags (uint32_t irq) override |
Set interrupt on DIO1 to be sent on a specific IRQ bit (e.g. RxTimeout, CadDone). NOTE: Unlike other modules that support IRQ abstraction (SX126x, LR11x0, etc.), SX127x cannot configure multiple IRQs to signal using the same DIOx pin. This method tries to configure IRQs in a "best effort" approach, and will skip conflicting flags. RADIOLIB_ERR_INVALID_IRQ will be returned in this case. More... | |
int16_t | clearIrqFlags (uint32_t irq) override |
Clear interrupt on a specific IRQ bit (e.g. RxTimeout, CadDone). More... | |
int16_t | setCrcFiltering (bool enable=true) |
Enable CRC filtering and generation. More... | |
int16_t | setRSSIConfig (uint8_t smoothingSamples, int8_t offset=0) |
Sets RSSI measurement configuration in FSK mode. More... | |
int16_t | setEncoding (uint8_t encoding) override |
Sets transmission encoding. Only available in FSK mode. Allowed values are RADIOLIB_ENCODING_NRZ, RADIOLIB_ENCODING_MANCHESTER and RADIOLIB_ENCODING_WHITENING. More... | |
uint16_t | getIRQFlags () |
Reads currently active IRQ flags, can be used to check which event caused an interrupt. In LoRa mode, this is the content of SX127X_REG_IRQ_FLAGS register. In FSK mode, this is the contents of SX127X_REG_IRQ_FLAGS_2 (MSB) and SX127X_REG_IRQ_FLAGS_1 (LSB) registers. More... | |
uint8_t | getModemStatus () |
Reads modem status. Only available in LoRa mode. More... | |
int8_t | getTempRaw () |
Reads uncalibrated temperature value. This function will change operating mode and should not be called during Tx, Rx or CAD. 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 () override |
Get one truly random byte from RSSI noise. More... | |
int16_t | getChipVersion () |
Read version SPI register. Should return SX1278_CHIP_VERSION (0x12) or SX1272_CHIP_VERSION (0x22) if SX127x is connected and working. More... | |
int16_t | invertIQ (bool enable) override |
Enable/disable inversion of the I and Q signals. More... | |
int16_t | getModem (ModemType_t *modem) override |
Get modem currently in use by the radio. More... | |
void | setDirectAction (void(*func)(void)) override |
Set interrupt service routine function to call when data bit is received in direct mode. More... | |
void | readBit (uint32_t pin) override |
Function to read and process data bit in direct reception mode. More... | |
int16_t | setFHSSHoppingPeriod (uint8_t freqHoppingPeriod) |
Sets the hopping period and enables FHSS. More... | |
uint8_t | getFHSSHoppingPeriod (void) |
Gets FHSS hopping period. More... | |
uint8_t | getFHSSChannel (void) |
Gets the FHSS channel in use. More... | |
void | clearFHSSInt (void) |
Clear the FHSS interrupt. | |
int16_t | setDIOMapping (uint32_t pin, uint32_t value) override |
Configure DIO pin mapping to get a given signal on a DIO pin (if available). More... | |
int16_t | setDIOPreambleDetect (bool usePreambleDetect) |
Configure DIO mapping to use RSSI or Preamble Detect for pins that support it. More... | |
int16_t | setRSSIThreshold (float dbm) |
Sets the RSSI value above which the RSSI interrupt is signaled. More... | |
int16_t | setLowBatteryThreshold (int8_t level, uint32_t pin=RADIOLIB_NC) |
Set low battery indicator threshold. More... | |
int16_t | transmit (const char *str, uint8_t addr=0) |
C-string transmit method. More... | |
virtual int16_t | transmit (const 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 (const 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 | setFrequency (float freq) |
Sets carrier frequency. Must be implemented in module class. More... | |
virtual int16_t | setBitRate (float br) |
Sets FSK bit rate. Only available in FSK mode. Must be implemented in module class. More... | |
virtual int16_t | setDataShaping (uint8_t sh) |
Sets GFSK data shaping. Only available in FSK mode. Must be implemented in module class. 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 | 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 | getRSSI () |
Gets RSSI (Recorded Signal Strength Indicator) of the last received packet. More... | |
uint32_t | getIrqMapped (RadioLibIrqFlags_t irq) |
Convert from radio-agnostic IRQ flags to radio-specific flags. More... | |
int16_t | checkIrq (RadioLibIrqType_t irq) |
Check whether a specific IRQ bit is set (e.g. RxTimeout, CadDone). More... | |
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! More... | |
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! More... | |
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. More... | |
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. 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 | setModem (ModemType_t modem) |
Set modem for the radio to use. Will perform full reset and reconfigure the radio using its default parameters. More... | |
Base class for SX127x series. All derived classes for SX127x (e.g. SX1278 or SX1272) inherit from this base class. This class should not be instantiated directly from Arduino sketch, only from its derived classes.
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explicit |
Default constructor. Called internally when creating new LoRa instance.
mod | Instance of Module that will be used to communicate with the LoRa chip. |
int16_t SX127x::begin | ( | uint8_t * | chipVersions, |
uint8_t | numVersions, | ||
uint8_t | syncWord, | ||
uint16_t | preambleLength | ||
) |
Initialization method. Will be called with appropriate parameters when calling initialization method from derived class.
chipVersions | Array of possible values in SPI version register. Used to verify the connection and hardware version. |
numVersions | Number of possible chip versions. |
syncWord | LoRa sync word. |
preambleLength | Length of LoRa transmission preamble in symbols. |
int16_t SX127x::beginFSK | ( | uint8_t * | chipVersions, |
uint8_t | numVersions, | ||
float | freqDev, | ||
float | rxBw, | ||
uint16_t | preambleLength, | ||
bool | enableOOK | ||
) |
Initialization method for FSK modem. Will be called with appropriate parameters when calling FSK initialization method from derived class.
chipVersions | Array of possible values in SPI version register. Used to verify the connection and hardware version. |
numVersions | Number of possible chip versions. |
freqDev | Frequency deviation of the FSK transmission in kHz. |
rxBw | Receiver bandwidth in kHz. |
preambleLength | Length of FSK preamble in bits. |
enableOOK | Flag to specify OOK mode. This modulation is similar to FSK. |
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overridevirtual |
Calculate the timeout value for this specific module / series (in number of symbols or units of time)
timeoutUs | Timeout in microseconds to listen for |
Reimplemented from PhysicalLayer.
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overridevirtual |
Clear interrupt on a specific IRQ bit (e.g. RxTimeout, CadDone).
irq | Module-specific IRQ flags. |
Reimplemented from PhysicalLayer.
int16_t SX127x::disableAddressFiltering | ( | ) |
Disables FSK address filtering.
int16_t SX127x::disableBitSync | ( | ) |
Disable Bit synchronizer (not allowed in Packet mode).
int16_t SX127x::enableBitSync | ( | ) |
Enable Bit synchronizer.
bool SX127x::fifoAdd | ( | uint8_t * | data, |
int | totalLen, | ||
int * | remLen | ||
) |
Set interrupt service routine function to call when FIFO is empty.
data | Pointer to the transmission buffer. |
totalLen | Total number of bytes to transmit. |
remLen | Pointer to a counter holding the number of bytes that have been transmitted so far. |
bool SX127x::fifoGet | ( | volatile uint8_t * | data, |
int | totalLen, | ||
volatile int * | rcvLen | ||
) |
Set interrupt service routine function to call when FIFO is sufficiently full to read.
data | Pointer to a buffer that stores the receive data. |
totalLen | Total number of bytes to receive. |
rcvLen | Pointer to a counter holding the number of bytes that have been received so far. |
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overridevirtual |
int16_t SX127x::fixedPacketLengthMode | ( | uint8_t | len = RADIOLIB_SX127X_MAX_PACKET_LENGTH_FSK | ) |
Set modem in fixed packet length mode. Available in FSK mode only.
len | Packet length. |
float SX127x::getAFCError | ( | ) |
Gets current AFC error.
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overridevirtual |
int16_t SX127x::getChipVersion | ( | ) |
Read version SPI register. Should return SX1278_CHIP_VERSION (0x12) or SX1272_CHIP_VERSION (0x22) if SX127x is connected and working.
float SX127x::getDataRate | ( | ) | const |
Get data rate of the latest transmitted packet.
uint8_t SX127x::getFHSSChannel | ( | void | ) |
Gets the FHSS channel in use.
uint8_t SX127x::getFHSSHoppingPeriod | ( | void | ) |
Gets FHSS hopping period.
float SX127x::getFrequencyError | ( | bool | autoCorrect = false | ) |
Gets frequency error of the latest received packet.
autoCorrect | When set to true, frequency will be automatically corrected. |
uint16_t SX127x::getIRQFlags | ( | ) |
Reads currently active IRQ flags, can be used to check which event caused an interrupt. In LoRa mode, this is the content of SX127X_REG_IRQ_FLAGS register. In FSK mode, this is the contents of SX127X_REG_IRQ_FLAGS_2 (MSB) and SX127X_REG_IRQ_FLAGS_1 (LSB) registers.
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overridevirtual |
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overridevirtual |
Get modem currently in use by the radio.
modem | Pointer to a variable to save the retrieved configuration into. |
Reimplemented from PhysicalLayer.
uint8_t SX127x::getModemStatus | ( | ) |
Reads modem status. Only available in LoRa mode.
float SX127x::getNumSymbols | ( | size_t | len | ) |
Convert from bytes to LoRa symbols.
len | Payload length in bytes. |
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overridevirtual |
Query modem for the packet length of received payload.
update | Update received packet length. Will return cached value when set to false. |
Reimplemented from PhysicalLayer.
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overridevirtual |
Gets signal-to-noise ratio of the latest received packet. Only available in LoRa mode.
Reimplemented from PhysicalLayer.
int8_t SX127x::getTempRaw | ( | ) |
Reads uncalibrated temperature value. This function will change operating mode and should not be called during Tx, Rx or CAD.
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overridevirtual |
Get expected time-on-air for a given size of payload.
len | Payload length in bytes. |
Reimplemented from PhysicalLayer.
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overridevirtual |
Enable/disable inversion of the I and Q signals.
enable | QI inversion enabled (true) or disabled (false); |
Reimplemented from PhysicalLayer.
int16_t SX127x::invertPreamble | ( | bool | enable | ) |
Invert FSK preamble polarity. The default (non-inverted) is 0x55, the inverted is 0xAA.
enable | Preamble polarity in FSK mode - 0xAA when true, 0x55 when false. |
int16_t SX127x::packetMode | ( | ) |
Disables direct mode and enables packet mode, allowing the module to receive packets. Can only be activated in FSK mode.
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overridevirtual |
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overridevirtual |
Function to read and process data bit in direct reception mode.
pin | Pin on which to read. |
Reimplemented from PhysicalLayer.
int16_t PhysicalLayer::readData |
Reads data that was received after calling startReceive method.
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 retrieved automatically. When more bytes than received are requested, only the number of bytes requested will be returned. |
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overridevirtual |
Reads data that was received after calling startReceive method. When the packet length is not known in advance, getPacketLength method must be called BEFORE calling readData!
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 retrieved automatically. When more bytes than received are requested, only the number of bytes requested will be returned. |
Reimplemented from PhysicalLayer.
int16_t PhysicalLayer::receive |
Binary receive method. Must be implemented in module class.
data | Pointer to array to save the received binary data. |
len | Packet length, needed for some modules under special circumstances (e.g. LoRa implicit header mode). |
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overridevirtual |
Binary receive method. Will attempt to receive arbitrary binary data up to 255 bytes long using LoRa or up to 63 bytes using FSK modem. For overloads to receive Arduino String, see PhysicalLayer::receive.
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. |
Reimplemented from PhysicalLayer.
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overridevirtual |
Enables direct reception mode on pins DIO1 (clock) and DIO2 (data). While in direct mode, the module will not be able to transmit or receive packets. Can only be activated in FSK mode.
Reimplemented from PhysicalLayer.
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overridevirtual |
Performs scan for valid LoRa preamble in the current channel.
Reimplemented from PhysicalLayer.
int16_t SX127x::setAFC | ( | bool | isEnabled | ) |
Enables or disables FSK automatic frequency correction(AFC)
isEnabled | AFC enabled or disabled |
int16_t SX127x::setAFCAGCTrigger | ( | uint8_t | trigger | ) |
Controls trigger of AFC and AGC.
trigger | one from SX127X_RX_TRIGGER_NONE, SX127X_RX_TRIGGER_RSSI_INTERRUPT, SX127X_RX_TRIGGER_PREAMBLE_DETECT, SX127X_RX_TRIGGER_BOTH |
int16_t SX127x::setAFCBandwidth | ( | float | afcBw | ) |
Sets FSK automatic frequency correction bandwidth. Allowed values range from 2.6 to 250 kHz. Only available in FSK mode.
afcBw | Receiver AFC bandwidth to be set (in kHz). |
int16_t SX127x::setBroadcastAddress | ( | uint8_t | broadAddr | ) |
Sets FSK broadcast address. Calling this method will enable address filtering. Only available in FSK mode.
broadAddr | Broadcast address to be set. |
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overridevirtual |
Sets interrupt service routine to call when a channel scan is finished.
func | ISR to call. |
Reimplemented from PhysicalLayer.
int16_t SX127x::setCrcFiltering | ( | bool | enable = true | ) |
Enable CRC filtering and generation.
enable | Set or unset CRC filtering and generation. |
int16_t SX127x::setCurrentLimit | ( | uint8_t | currentLimit | ) |
Sets current limit for over current protection at transmitter amplifier. Allowed values range from 45 to 120 mA in 5 mA steps and 120 to 240 mA in 10 mA steps.
currentLimit | Current limit to be set (in mA). |
void SX127x::setDio0Action | ( | void(*)(void) | func, |
uint32_t | dir | ||
) |
Set interrupt service routine function to call when DIO0 activates.
func | Pointer to interrupt service routine. |
dir | Signal change direction. |
void SX127x::setDio1Action | ( | void(*)(void) | func, |
uint32_t | dir | ||
) |
Set interrupt service routine function to call when DIO1 activates.
func | Pointer to interrupt service routine. |
dir | Signal change direction. |
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overridevirtual |
Configure DIO pin mapping to get a given signal on a DIO pin (if available).
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. |
Reimplemented from PhysicalLayer.
int16_t SX127x::setDIOPreambleDetect | ( | bool | usePreambleDetect | ) |
Configure DIO mapping to use RSSI or Preamble Detect for pins that support it.
usePreambleDetect | Whether to use PreambleDetect (true) or RSSI (false) on the pins that are mapped to this function. |
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overridevirtual |
Set interrupt service routine function to call when data bit is received in direct mode.
func | Pointer to interrupt service routine. |
Reimplemented from PhysicalLayer.
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overridevirtual |
Sets transmission encoding. Only available in FSK mode. Allowed values are RADIOLIB_ENCODING_NRZ, RADIOLIB_ENCODING_MANCHESTER and RADIOLIB_ENCODING_WHITENING.
encoding | Encoding to be used. |
Reimplemented from PhysicalLayer.
int16_t SX127x::setFHSSHoppingPeriod | ( | uint8_t | freqHoppingPeriod | ) |
Sets the hopping period and enables FHSS.
freqHoppingPeriod | Integer multiple of symbol periods between hops |
void SX127x::setFifoEmptyAction | ( | void(*)(void) | func | ) |
Set interrupt service routine function to call when FIFO is empty.
func | Pointer to interrupt service routine. |
void SX127x::setFifoFullAction | ( | void(*)(void) | func | ) |
Set interrupt service routine function to call when FIFO is full.
func | Pointer to interrupt service routine. |
void SX127x::setFifoThreshold | ( | uint8_t | threshold | ) |
Set FIFO threshold level. Be aware that threshold is also set in setFifoFullAction method. setFifoThreshold method must be called AFTER calling setFifoFullAction!
threshold | Threshold level in bytes. |
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overridevirtual |
Sets FSK frequency deviation from carrier frequency. Allowed values depend on bit rate setting and must be lower than 200 kHz. Only available in FSK mode.
freqDev | Frequency deviation to be set (in kHz). |
Reimplemented from PhysicalLayer.
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overridevirtual |
Set interrupt on DIO1 to be sent on a specific IRQ bit (e.g. RxTimeout, CadDone). NOTE: Unlike other modules that support IRQ abstraction (SX126x, LR11x0, etc.), SX127x cannot configure multiple IRQs to signal using the same DIOx pin. This method tries to configure IRQs in a "best effort" approach, and will skip conflicting flags. RADIOLIB_ERR_INVALID_IRQ will be returned in this case.
irq | Module-specific IRQ flags. |
Reimplemented from PhysicalLayer.
int16_t SX127x::setLowBatteryThreshold | ( | int8_t | level, |
uint32_t | pin = RADIOLIB_NC |
||
) |
Set low battery indicator threshold.
level | Battery threshold level (one of RADIOLIB_SX127X_LOW_BAT_THRESHOLD_*), or -1 to disable the detector. Disabled by default. Note that this will not attach any interrupts! |
pin | DIO pin number which will be used to signal low battery. Only DIO0/4 can be used (in packet mode) or DIO3/4 (in continuous mode). Ignored when disabling the detector. |
int16_t SX127x::setNodeAddress | ( | uint8_t | nodeAddr | ) |
Sets FSK node address. Calling this method will enable address filtering. Only available in FSK mode.
nodeAddr | Node address to be set. |
int16_t SX127x::setOOK | ( | bool | enableOOK | ) |
Enables/disables OOK modulation instead of FSK.
enableOOK | Enable (true) or disable (false) OOK. |
int16_t SX127x::setOokFixedOrFloorThreshold | ( | 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.
value | Threshold level in steps of 0.5 dB. |
int16_t SX127x::setOokPeakThresholdDecrement | ( | uint8_t | value | ) |
Period of decrement of the RSSI threshold in the OOK demodulator.
value | Use defines RADIOLIB_SX127X_OOK_PEAK_THRESH_DEC_X_X_CHIP |
int16_t SX127x::setOokPeakThresholdStep | ( | uint8_t | value | ) |
Size of each decrement of the RSSI threshold in the OOK demodulator.
value | Step size: RADIOLIB_SX127X_OOK_PEAK_THRESH_STEP_0_5_DB (default), RADIOLIB_SX127X_OOK_PEAK_THRESH_STEP_1_0_DB, RADIOLIB_SX127X_OOK_PEAK_THRESH_STEP_1_5_DB, RADIOLIB_SX127X_OOK_PEAK_THRESH_STEP_2_0_DB, RADIOLIB_SX127X_OOK_PEAK_THRESH_STEP_3_0_DB, RADIOLIB_SX127X_OOK_PEAK_THRESH_STEP_4_0_DB, RADIOLIB_SX127X_OOK_PEAK_THRESH_STEP_5_0_DB, RADIOLIB_SX127X_OOK_PEAK_THRESH_STEP_6_0_DB |
int16_t SX127x::setOokThresholdType | ( | uint8_t | type | ) |
Selects the type of threshold in the OOK data slicer.
type | Threshold type: SX127X_OOK_THRESH_PEAK(default), SX127X_OOK_THRESH_FIXED, SX127X_OOK_THRESH_AVERAGE |
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overridevirtual |
Sets interrupt service routine to call when a packet is received.
func | ISR to call. |
Reimplemented from PhysicalLayer.
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overridevirtual |
Sets interrupt service routine to call when a packet is sent.
func | ISR to call. |
Reimplemented from PhysicalLayer.
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overridevirtual |
Sets LoRa or FSK preamble length. Allowed values range from 6 to 65535 in LoRa mode or 0 to 65535 in FSK mode.
preambleLength | Preamble length to be set (in symbols when in LoRa mode or bits in FSK mode). |
Reimplemented from PhysicalLayer.
void SX127x::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.
rxEn | RX enable pin. |
txEn | TX enable pin. |
void SX127x::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.
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.
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:
int16_t SX127x::setRSSIConfig | ( | uint8_t | smoothingSamples, |
int8_t | offset = 0 |
||
) |
Sets RSSI measurement configuration in FSK mode.
smoothingSamples | Number of samples taken to average the RSSI result. numSamples = 2 ^ (1 + smoothingSamples), allowed values are in range 0 (2 samples) - 7 (256 samples) |
offset | Signed RSSI offset that will be automatically compensated. 1 dB per LSB, defaults to 0, allowed values are in range -16 dB to +15 dB. |
int16_t SX127x::setRSSIThreshold | ( | float | dbm | ) |
Sets the RSSI value above which the RSSI interrupt is signaled.
dbm | A dBm value between -127.5 and 0 inclusive |
int16_t SX127x::setRxBandwidth | ( | float | rxBw | ) |
Sets FSK receiver bandwidth. Allowed values range from 2.6 to 250 kHz. Only available in FSK mode.
rxBw | Receiver bandwidth to be set (in kHz). |
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overridevirtual |
Sets FSK sync word. Allowed sync words are up to 8 bytes long and can not contain null bytes. Only available in FSK mode.
syncWord | Sync word array. |
len | Sync word length (in bytes). |
Reimplemented from PhysicalLayer.
int16_t SX127x::setSyncWord | ( | uint8_t | syncWord | ) |
Sets LoRa sync word. Only available in LoRa mode.
syncWord | Sync word to be set. |
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overridevirtual |
Sets the LoRa module to sleep to save power. Module will not be able to transmit or receive any data while in sleep mode. Module will wake up automatically when methods like transmit or receive are called.
Reimplemented from PhysicalLayer.
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overridevirtual |
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overridevirtual |
Sets the LoRa module to standby.
mode | Standby mode to be used. No effect, implemented only for PhysicalLayer compatibility. |
Reimplemented from PhysicalLayer.
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overridevirtual |
Interrupt-driven channel activity detection method. DIO0 will be activated when LoRa preamble is detected. DIO1 will be activated if there's no preamble detected before timeout.
Reimplemented from PhysicalLayer.
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overridevirtual |
Interrupt-driven receive method with default parameters. Implemented for compatibility with PhysicalLayer.
Reimplemented from PhysicalLayer.
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overridevirtual |
Interrupt-driven receive method, implemented for compatibility with PhysicalLayer.
timeout | Receive mode type and/or raw timeout value in symbols. When set to 0, the timeout will be infinite and the device will remain in Rx mode until explicitly commanded to stop (Rx continuous mode). When non-zero (maximum 1023), the device will be set to Rx single mode and timeout will be set. |
irqFlags | Sets the IRQ flags, defaults to RX done, RX timeout, CRC error and header error. |
irqMask | Sets the mask of IRQ flags that will trigger DIO1, defaults to RX done. |
len | Expected length of packet to be received. Required for LoRa spreading factor 6. |
Reimplemented from PhysicalLayer.
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.
str | C-string that will be transmitted. |
addr | Node address to transmit the packet to. Only used in FSK mode. |
int16_t PhysicalLayer::startTransmit |
Interrupt-driven binary transmit method.
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. |
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overridevirtual |
Interrupt-driven binary transmit method. Will start transmitting arbitrary binary data up to 255 bytes long using LoRa or up to 63 bytes using FSK modem.
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. |
Reimplemented from PhysicalLayer.
int16_t PhysicalLayer::transmit |
C-string transmit method.
str | C-string that will be transmitted. |
addr | Node address to transmit the packet to. Only used in FSK mode. |
int16_t PhysicalLayer::transmit |
Binary transmit method. Must be implemented in module class.
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. |
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overridevirtual |
Binary transmit method. Will transmit arbitrary binary data up to 255 bytes long using LoRa or up to 63 bytes using FSK modem. For overloads to transmit Arduino String or C-string, see PhysicalLayer::transmit.
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. |
Reimplemented from PhysicalLayer.
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overridevirtual |
Enables direct transmission mode on pins DIO1 (clock) and DIO2 (data). While in direct mode, the module will not be able to transmit or receive packets. Can only be activated in FSK mode.
frf | 24-bit raw frequency value to start transmitting at. Required for quick frequency shifts in RTTY. |
Reimplemented from PhysicalLayer.
int16_t SX127x::variablePacketLengthMode | ( | uint8_t | maxLen = RADIOLIB_SX127X_MAX_PACKET_LENGTH_FSK | ) |
Set modem in variable packet length mode. Available in FSK mode only.
maxLen | Maximum packet length. |