Interface for the radios, containing the main functions that a radio needs, and five callback functions. More...

#include <LoRaRadio.h>

Public Member Functions
virtual void	init_radio (radio_events_t *events)=0
	Registers radio events with the Mbed LoRaWAN stack and undergoes initialization steps, if any. More...

virtual void	radio_reset ()=0
	Resets the radio module. More...

virtual void	sleep (void)=0
	Put the RF module in sleep mode. More...

virtual void	standby (void)=0
	Sets the radio to standby mode. More...

virtual void	set_rx_config (radio_modems_t modem, uint32_t bandwidth, uint32_t datarate, uint8_t coderate, uint32_t bandwidth_afc, uint16_t preamble_len, uint16_t symb_timeout, bool fix_len, uint8_t payload_len, bool crc_on, bool freq_hop_on, uint8_t hop_period, bool iq_inverted, bool rx_continuous)=0
	Sets reception parameters. More...

virtual void	set_tx_config (radio_modems_t modem, int8_t power, uint32_t fdev, uint32_t bandwidth, uint32_t datarate, uint8_t coderate, uint16_t preamble_len, bool fix_len, bool crc_on, bool freq_hop_on, uint8_t hop_period, bool iq_inverted, uint32_t timeout)=0
	Sets the transmission parameters. More...

virtual void	send (uint8_t *buffer, uint8_t size)=0
	Sends the packet. More...

virtual void	receive (void)=0
	Sets the radio to reception mode. More...

virtual void	set_channel (uint32_t freq)=0
	Sets the carrier frequency. More...

virtual uint32_t	random (void)=0
	Generates a 32 bit random value based on RSSI readings. More...

virtual uint8_t	get_status (void)=0
	Gets the radio status. More...

virtual void	set_max_payload_length (radio_modems_t modem, uint8_t max)=0
	Sets the maximum payload length. More...

virtual void	set_public_network (bool enable)=0
	Sets the network to public or private. More...

virtual uint32_t	time_on_air (radio_modems_t modem, uint8_t pkt_len)=0
	Computes the packet time on air for the given payload. More...

virtual bool	perform_carrier_sense (radio_modems_t modem, uint32_t freq, int16_t rssi_threshold, uint32_t max_carrier_sense_time)=0
	Performs carrier sensing. More...

virtual void	start_cad (void)=0
	Sets the radio to CAD mode. More...

virtual bool	check_rf_frequency (uint32_t frequency)=0
	Checks whether the given RF is in range. More...

virtual void	set_tx_continuous_wave (uint32_t freq, int8_t power, uint16_t time)=0
	Sets the radio to continuous wave transmission mode. More...

virtual void	lock (void)=0
	Acquires exclusive access to this radio. More...

virtual void	unlock (void)=0
	Releases exclusive access to this radio. More...

Detailed Description

Interface for the radios, containing the main functions that a radio needs, and five callback functions.

Definition at line 440 of file LoRaRadio.h.

Member Function Documentation

virtual bool check_rf_frequency ( uint32_t frequency )

pure virtual

Checks whether the given RF is in range.

Parameters

frequency The frequency to check.

virtual uint8_t get_status ( void )

pure virtual

Gets the radio status.

Returns: The current radio status.

virtual void init_radio ( radio_events_t * events )

pure virtual

Registers radio events with the Mbed LoRaWAN stack and undergoes initialization steps, if any.

Parameters

events Contains driver callback functions.

virtual void lock ( void )

pure virtual

Acquires exclusive access to this radio.

virtual bool perform_carrier_sense	(	radio_modems_t	modem,
		uint32_t	freq,
		int16_t	rssi_threshold,
		uint32_t	max_carrier_sense_time
	)

pure virtual

Performs carrier sensing.

Checks for a certain time if the RSSI is above a given threshold. This threshold determines whether or not there is a transmission on the channel already.

Parameters

modem	The type of radio modem.
freq	The carrier frequency.
rssi_threshold	The threshold value of RSSI.
max_carrier_sense_time	The time set for sensing the channel (ms).

Returns: True if there is no active transmission in the channel, otherwise false.

virtual void radio_reset ( )

pure virtual

Resets the radio module.

virtual uint32_t random ( void )

pure virtual

Generates a 32 bit random value based on RSSI readings.

Remarks: This function sets the radio in LoRa modem mode and disables all interrupts. After calling this function, either Radio.SetRxConfig or Radio.SetTxConfig functions must be called.

Returns: A 32 bit random value.

virtual void receive ( void )

pure virtual

Sets the radio to reception mode.

To configure the receiver, use the set_rx_config() API.

virtual void send	(	uint8_t *	buffer,
		uint8_t	size
	)

pure virtual

Sends the packet.

Prepares the packet to be sent and sets the radio to transmission mode.

Parameters

buffer	A pointer to the buffer.
size	The buffer size.

virtual void set_channel ( uint32_t freq )

pure virtual

Sets the carrier frequency.

Parameters

freq	Channel RF frequency.

virtual void set_max_payload_length	(	radio_modems_t	modem,
		uint8_t	max
	)

pure virtual

Sets the maximum payload length.

Parameters

modem	The radio modem [0: FSK, 1: LoRa].
max	The maximum payload length in bytes.

virtual void set_public_network ( bool enable )

pure virtual

Sets the network to public or private.

Updates the sync byte. Applies to LoRa modem only.

Parameters

enable If true, enables a public network.

virtual void set_rx_config	(	radio_modems_t	modem,
		uint32_t	bandwidth,
		uint32_t	datarate,
		uint8_t	coderate,
		uint32_t	bandwidth_afc,
		uint16_t	preamble_len,
		uint16_t	symb_timeout,
		bool	fix_len,
		uint8_t	payload_len,
		bool	crc_on,
		bool	freq_hop_on,
		uint8_t	hop_period,
		bool	iq_inverted,
		bool	rx_continuous
	)

pure virtual

Sets reception parameters.

Parameters

modem	The radio modem [0: FSK, 1: LoRa].
bandwidth	Sets the bandwidth. FSK : >= 2600 and <= 250000 Hz LoRa: [0: 125 kHz, 1: 250 kHz, 2: 500 kHz, 3: Reserved]
datarate	Sets the datarate. FSK : 600..300000 bits/s LoRa: [6: 64, 7: 128, 8: 256, 9: 512, 10: 1024, 11: 2048, 12: 4096 chips]
coderate	Sets the coding rate (LoRa only). FSK : N/A ( set to 0 ) LoRa: [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8]
bandwidth_afc	Sets the AFC bandwidth (FSK only). FSK : >= 2600 and <= 250000 Hz LoRa: N/A (set to 0)
preamble_len	Sets the preamble length (LoRa only). FSK : N/A (set to 0) LoRa: Length in symbols (the hardware adds four more symbols).
symb_timeout	Sets the RxSingle timeout value. FSK : Timeout number of bytes LoRa: Timeout in symbols
fix_len	Fixed length packets [0: variable, 1: fixed].
payload_len	Sets the payload length when fixed length is used.
crc_on	Enables/disables CRC [0: OFF, 1: ON].
freq_hop_on	Enables/disables intra-packet frequency hopping [0: OFF, 1: ON] (LoRa only).
hop_period	The number of symbols bewteen each hop (LoRa only).
iq_inverted	Inverts the IQ signals (LoRa only). FSK : N/A (set to 0) LoRa: [0: not inverted, 1: inverted]
rx_continuous	Sets the reception to continuous mode. [false: single mode, true: continuous mode]

virtual void set_tx_config	(	radio_modems_t	modem,
		int8_t	power,
		uint32_t	fdev,
		uint32_t	bandwidth,
		uint32_t	datarate,
		uint8_t	coderate,
		uint16_t	preamble_len,
		bool	fix_len,
		bool	crc_on,
		bool	freq_hop_on,
		uint8_t	hop_period,
		bool	iq_inverted,
		uint32_t	timeout
	)

pure virtual

Sets the transmission parameters.

Parameters

modem	The radio modem [0: FSK, 1: LoRa].
power	Sets the output power [dBm].
fdev	Sets the frequency deviation (FSK only). FSK : [Hz] LoRa: 0
bandwidth	Sets the bandwidth (LoRa only). FSK : 0 LoRa: [0: 125 kHz, 1: 250 kHz, 2: 500 kHz, 3: Reserved]
datarate	Sets the datarate. FSK : 600..300000 bits/s LoRa: [6: 64, 7: 128, 8: 256, 9: 512, 10: 1024, 11: 2048, 12: 4096 chips]
coderate	Sets the coding rate (LoRa only). FSK : N/A ( set to 0 ) LoRa: [1: 4/5, 2: 4/6, 3: 4/7, 4: 4/8]
preamble_len	Sets the preamble length.
fix_len	Fixed length packets [0: variable, 1: fixed].
crc_on	Enables/disables CRC [0: OFF, 1: ON].
freq_hop_on	Enables/disables intra-packet frequency hopping [0: OFF, 1: ON] (LoRa only).
hop_period	The number of symbols between each hop (LoRa only).
iq_inverted	Inverts IQ signals (LoRa only) FSK : N/A (set to 0). LoRa: [0: not inverted, 1: inverted]
timeout	The transmission timeout [ms].

virtual void set_tx_continuous_wave	(	uint32_t	freq,
		int8_t	power,
		uint16_t	time
	)

pure virtual

Sets the radio to continuous wave transmission mode.

Parameters

freq	The RF frequency of the channel.
power	The output power [dBm].
time	The transmission mode timeout [s].

virtual void sleep ( void )

pure virtual

Put the RF module in sleep mode.

virtual void standby ( void )

pure virtual

Sets the radio to standby mode.

virtual void start_cad ( void )

pure virtual

Sets the radio to CAD mode.

virtual uint32_t time_on_air	(	radio_modems_t	modem,
		uint8_t	pkt_len
	)

pure virtual

Computes the packet time on air for the given payload.

Remarks: This can only be called after SetRxConfig or SetTxConfig.

Parameters

modem	The radio modem [0: FSK, 1: LoRa].
pkt_len	The packet payload length.

Returns: The computed airTime for the given packet payload length.

virtual void unlock ( void )

pure virtual

Releases exclusive access to this radio.

Public Member Functions

Detailed Description

Member Function Documentation

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