Device.h File Reference

#include <SoapySDR/Config.h>
#include <SoapySDR/Types.h>
#include <SoapySDR/Constants.h>
#include <SoapySDR/Errors.h>
#include <SoapySDR/Device.h>

Go to the source code of this file.

Typedefs
typedef struct SoapySDRDevice	SoapySDRDevice
	Forward declaration of device handle. More...
typedef struct SoapySDRStream	SoapySDRStream
	Forward declaration of stream handle. More...

Functions
SOAPY_SDR_API int	SoapySDRDevice_lastStatus (void)
const SOAPY_SDR_API char *	SoapySDRDevice_lastError (void)
SOAPY_SDR_API SoapySDRKwargs *	SoapySDRDevice_enumerate (const SoapySDRKwargs *args, size_t *length)
SOAPY_SDR_API SoapySDRKwargs *	SoapySDRDevice_enumerateStrArgs (const char *args, size_t *length)
SOAPY_SDR_API SoapySDRDevice *	SoapySDRDevice_make (const SoapySDRKwargs *args)
SOAPY_SDR_API SoapySDRDevice *	SoapySDRDevice_makeStrArgs (const char *args)
SOAPY_SDR_API int	SoapySDRDevice_unmake (SoapySDRDevice *device)
SOAPY_SDR_API SoapySDRDevice **	SoapySDRDevice_make_list (const SoapySDRKwargs *argsList, const size_t length)
SOAPY_SDR_API SoapySDRDevice **	SoapySDRDevice_make_listStrArgs (const char *const *argsList, const size_t length)
SOAPY_SDR_API int	SoapySDRDevice_unmake_list (SoapySDRDevice **devices, const size_t length)
SOAPY_SDR_API char *	SoapySDRDevice_getDriverKey (const SoapySDRDevice *device)
SOAPY_SDR_API char *	SoapySDRDevice_getHardwareKey (const SoapySDRDevice *device)
SOAPY_SDR_API SoapySDRKwargs	SoapySDRDevice_getHardwareInfo (const SoapySDRDevice *device)
SOAPY_SDR_API int	SoapySDRDevice_setFrontendMapping (SoapySDRDevice *device, const int direction, const char *mapping)
SOAPY_SDR_API char *	SoapySDRDevice_getFrontendMapping (const SoapySDRDevice *device, const int direction)
SOAPY_SDR_API size_t	SoapySDRDevice_getNumChannels (const SoapySDRDevice *device, const int direction)
SOAPY_SDR_API SoapySDRKwargs	SoapySDRDevice_getChannelInfo (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API bool	SoapySDRDevice_getFullDuplex (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API char **	SoapySDRDevice_getStreamFormats (const SoapySDRDevice *device, const int direction, const size_t channel, size_t *length)
SOAPY_SDR_API char *	SoapySDRDevice_getNativeStreamFormat (const SoapySDRDevice *device, const int direction, const size_t channel, double *fullScale)
SOAPY_SDR_API SoapySDRArgInfo *	SoapySDRDevice_getStreamArgsInfo (const SoapySDRDevice *device, const int direction, const size_t channel, size_t *length)
SOAPY_SDR_API SoapySDRStream *	SoapySDRDevice_setupStream (SoapySDRDevice *device, const int direction, const char *format, const size_t *channels, const size_t numChans, const SoapySDRKwargs *args)
SOAPY_SDR_API int	SoapySDRDevice_closeStream (SoapySDRDevice *device, SoapySDRStream *stream)
SOAPY_SDR_API size_t	SoapySDRDevice_getStreamMTU (const SoapySDRDevice *device, SoapySDRStream *stream)
SOAPY_SDR_API int	SoapySDRDevice_activateStream (SoapySDRDevice *device, SoapySDRStream *stream, const int flags, const long long timeNs, const size_t numElems)
SOAPY_SDR_API int	SoapySDRDevice_deactivateStream (SoapySDRDevice *device, SoapySDRStream *stream, const int flags, const long long timeNs)
SOAPY_SDR_API int	SoapySDRDevice_readStream (SoapySDRDevice *device, SoapySDRStream *stream, void *const *buffs, const size_t numElems, int *flags, long long *timeNs, const long timeoutUs)
SOAPY_SDR_API int	SoapySDRDevice_writeStream (SoapySDRDevice *device, SoapySDRStream *stream, const void *const *buffs, const size_t numElems, int *flags, const long long timeNs, const long timeoutUs)
SOAPY_SDR_API int	SoapySDRDevice_readStreamStatus (SoapySDRDevice *device, SoapySDRStream *stream, size_t *chanMask, int *flags, long long *timeNs, const long timeoutUs)
SOAPY_SDR_API size_t	SoapySDRDevice_getNumDirectAccessBuffers (SoapySDRDevice *device, SoapySDRStream *stream)
SOAPY_SDR_API int	SoapySDRDevice_getDirectAccessBufferAddrs (SoapySDRDevice *device, SoapySDRStream *stream, const size_t handle, void **buffs)
SOAPY_SDR_API int	SoapySDRDevice_acquireReadBuffer (SoapySDRDevice *device, SoapySDRStream *stream, size_t *handle, const void **buffs, int *flags, long long *timeNs, const long timeoutUs)
SOAPY_SDR_API void	SoapySDRDevice_releaseReadBuffer (SoapySDRDevice *device, SoapySDRStream *stream, const size_t handle)
SOAPY_SDR_API int	SoapySDRDevice_acquireWriteBuffer (SoapySDRDevice *device, SoapySDRStream *stream, size_t *handle, void **buffs, const long timeoutUs)
SOAPY_SDR_API void	SoapySDRDevice_releaseWriteBuffer (SoapySDRDevice *device, SoapySDRStream *stream, const size_t handle, const size_t numElems, int *flags, const long long timeNs)
SOAPY_SDR_API char **	SoapySDRDevice_listAntennas (const SoapySDRDevice *device, const int direction, const size_t channel, size_t *length)
SOAPY_SDR_API int	SoapySDRDevice_setAntenna (SoapySDRDevice *device, const int direction, const size_t channel, const char *name)
SOAPY_SDR_API char *	SoapySDRDevice_getAntenna (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API bool	SoapySDRDevice_hasDCOffsetMode (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API int	SoapySDRDevice_setDCOffsetMode (SoapySDRDevice *device, const int direction, const size_t channel, const bool automatic)
SOAPY_SDR_API bool	SoapySDRDevice_getDCOffsetMode (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API bool	SoapySDRDevice_hasDCOffset (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API int	SoapySDRDevice_setDCOffset (SoapySDRDevice *device, const int direction, const size_t channel, const double offsetI, const double offsetQ)
SOAPY_SDR_API int	SoapySDRDevice_getDCOffset (const SoapySDRDevice *device, const int direction, const size_t channel, double *offsetI, double *offsetQ)
SOAPY_SDR_API bool	SoapySDRDevice_hasIQBalance (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API int	SoapySDRDevice_setIQBalance (SoapySDRDevice *device, const int direction, const size_t channel, const double balanceI, const double balanceQ)
SOAPY_SDR_API int	SoapySDRDevice_getIQBalance (const SoapySDRDevice *device, const int direction, const size_t channel, double *balanceI, double *balanceQ)
SOAPY_SDR_API bool	SoapySDRDevice_hasIQBalanceMode (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API int	SoapySDRDevice_setIQBalanceMode (SoapySDRDevice *device, const int direction, const size_t channel, const bool automatic)
SOAPY_SDR_API bool	SoapySDRDevice_getIQBalanceMode (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API bool	SoapySDRDevice_hasFrequencyCorrection (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API int	SoapySDRDevice_setFrequencyCorrection (SoapySDRDevice *device, const int direction, const size_t channel, const double value)
SOAPY_SDR_API double	SoapySDRDevice_getFrequencyCorrection (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API char **	SoapySDRDevice_listGains (const SoapySDRDevice *device, const int direction, const size_t channel, size_t *length)
SOAPY_SDR_API bool	SoapySDRDevice_hasGainMode (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API int	SoapySDRDevice_setGainMode (SoapySDRDevice *device, const int direction, const size_t channel, const bool automatic)
SOAPY_SDR_API bool	SoapySDRDevice_getGainMode (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API int	SoapySDRDevice_setGain (SoapySDRDevice *device, const int direction, const size_t channel, const double value)
SOAPY_SDR_API int	SoapySDRDevice_setGainElement (SoapySDRDevice *device, const int direction, const size_t channel, const char *name, const double value)
SOAPY_SDR_API double	SoapySDRDevice_getGain (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API double	SoapySDRDevice_getGainElement (const SoapySDRDevice *device, const int direction, const size_t channel, const char *name)
SOAPY_SDR_API SoapySDRRange	SoapySDRDevice_getGainRange (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API SoapySDRRange	SoapySDRDevice_getGainElementRange (const SoapySDRDevice *device, const int direction, const size_t channel, const char *name)
SOAPY_SDR_API int	SoapySDRDevice_setFrequency (SoapySDRDevice *device, const int direction, const size_t channel, const double frequency, const SoapySDRKwargs *args)
SOAPY_SDR_API int	SoapySDRDevice_setFrequencyComponent (SoapySDRDevice *device, const int direction, const size_t channel, const char *name, const double frequency, const SoapySDRKwargs *args)
SOAPY_SDR_API double	SoapySDRDevice_getFrequency (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API double	SoapySDRDevice_getFrequencyComponent (const SoapySDRDevice *device, const int direction, const size_t channel, const char *name)
SOAPY_SDR_API char **	SoapySDRDevice_listFrequencies (const SoapySDRDevice *device, const int direction, const size_t channel, size_t *length)
SOAPY_SDR_API SoapySDRRange *	SoapySDRDevice_getFrequencyRange (const SoapySDRDevice *device, const int direction, const size_t channel, size_t *length)
SOAPY_SDR_API SoapySDRRange *	SoapySDRDevice_getFrequencyRangeComponent (const SoapySDRDevice *device, const int direction, const size_t channel, const char *name, size_t *length)
SOAPY_SDR_API SoapySDRArgInfo *	SoapySDRDevice_getFrequencyArgsInfo (const SoapySDRDevice *device, const int direction, const size_t channel, size_t *length)
SOAPY_SDR_API int	SoapySDRDevice_setSampleRate (SoapySDRDevice *device, const int direction, const size_t channel, const double rate)
SOAPY_SDR_API double	SoapySDRDevice_getSampleRate (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API double *	SoapySDRDevice_listSampleRates (const SoapySDRDevice *device, const int direction, const size_t channel, size_t *length)
SOAPY_SDR_API SoapySDRRange *	SoapySDRDevice_getSampleRateRange (const SoapySDRDevice *device, const int direction, const size_t channel, size_t *length)
SOAPY_SDR_API int	SoapySDRDevice_setBandwidth (SoapySDRDevice *device, const int direction, const size_t channel, const double bw)
SOAPY_SDR_API double	SoapySDRDevice_getBandwidth (const SoapySDRDevice *device, const int direction, const size_t channel)
SOAPY_SDR_API double *	SoapySDRDevice_listBandwidths (const SoapySDRDevice *device, const int direction, const size_t channel, size_t *length)
SOAPY_SDR_API SoapySDRRange *	SoapySDRDevice_getBandwidthRange (const SoapySDRDevice *device, const int direction, const size_t channel, size_t *length)
SOAPY_SDR_API int	SoapySDRDevice_setMasterClockRate (SoapySDRDevice *device, const double rate)
SOAPY_SDR_API double	SoapySDRDevice_getMasterClockRate (const SoapySDRDevice *device)
SOAPY_SDR_API SoapySDRRange *	SoapySDRDevice_getMasterClockRates (const SoapySDRDevice *device, size_t *length)
SOAPY_SDR_API int	SoapySDRDevice_setReferenceClockRate (SoapySDRDevice *device, const double rate)
SOAPY_SDR_API double	SoapySDRDevice_getReferenceClockRate (const SoapySDRDevice *device)
SOAPY_SDR_API SoapySDRRange *	SoapySDRDevice_getReferenceClockRates (const SoapySDRDevice *device, size_t *length)
SOAPY_SDR_API char **	SoapySDRDevice_listClockSources (const SoapySDRDevice *device, size_t *length)
SOAPY_SDR_API int	SoapySDRDevice_setClockSource (SoapySDRDevice *device, const char *source)
SOAPY_SDR_API char *	SoapySDRDevice_getClockSource (const SoapySDRDevice *device)
SOAPY_SDR_API char **	SoapySDRDevice_listTimeSources (const SoapySDRDevice *device, size_t *length)
SOAPY_SDR_API int	SoapySDRDevice_setTimeSource (SoapySDRDevice *device, const char *source)
SOAPY_SDR_API char *	SoapySDRDevice_getTimeSource (const SoapySDRDevice *device)
SOAPY_SDR_API bool	SoapySDRDevice_hasHardwareTime (const SoapySDRDevice *device, const char *what)
SOAPY_SDR_API long long	SoapySDRDevice_getHardwareTime (const SoapySDRDevice *device, const char *what)
SOAPY_SDR_API int	SoapySDRDevice_setHardwareTime (SoapySDRDevice *device, const long long timeNs, const char *what)
SOAPY_SDR_API int	SoapySDRDevice_setCommandTime (SoapySDRDevice *device, const long long timeNs, const char *what)
SOAPY_SDR_API char **	SoapySDRDevice_listSensors (const SoapySDRDevice *device, size_t *length)
SOAPY_SDR_API SoapySDRArgInfo	SoapySDRDevice_getSensorInfo (const SoapySDRDevice *device, const char *key)
SOAPY_SDR_API char *	SoapySDRDevice_readSensor (const SoapySDRDevice *device, const char *key)
SOAPY_SDR_API char **	SoapySDRDevice_listChannelSensors (const SoapySDRDevice *device, const int direction, const size_t channel, size_t *length)
SOAPY_SDR_API SoapySDRArgInfo	SoapySDRDevice_getChannelSensorInfo (const SoapySDRDevice *device, const int direction, const size_t channel, const char *key)
SOAPY_SDR_API char *	SoapySDRDevice_readChannelSensor (const SoapySDRDevice *device, const int direction, const size_t channel, const char *key)
SOAPY_SDR_API char **	SoapySDRDevice_listRegisterInterfaces (const SoapySDRDevice *device, size_t *length)
SOAPY_SDR_API int	SoapySDRDevice_writeRegister (SoapySDRDevice *device, const char *name, const unsigned addr, const unsigned value)
SOAPY_SDR_API unsigned	SoapySDRDevice_readRegister (const SoapySDRDevice *device, const char *name, const unsigned addr)
SOAPY_SDR_API int	SoapySDRDevice_writeRegisters (SoapySDRDevice *device, const char *name, const unsigned addr, const unsigned *value, const size_t length)
SOAPY_SDR_API unsigned *	SoapySDRDevice_readRegisters (const SoapySDRDevice *device, const char *name, const unsigned addr, size_t *length)
SOAPY_SDR_API SoapySDRArgInfo *	SoapySDRDevice_getSettingInfo (const SoapySDRDevice *device, size_t *length)
SOAPY_SDR_API int	SoapySDRDevice_writeSetting (SoapySDRDevice *device, const char *key, const char *value)
SOAPY_SDR_API char *	SoapySDRDevice_readSetting (const SoapySDRDevice *device, const char *key)
SOAPY_SDR_API SoapySDRArgInfo *	SoapySDRDevice_getChannelSettingInfo (const SoapySDRDevice *device, const int direction, const size_t channel, size_t *length)
SOAPY_SDR_API int	SoapySDRDevice_writeChannelSetting (SoapySDRDevice *device, const int direction, const size_t channel, const char *key, const char *value)
SOAPY_SDR_API char *	SoapySDRDevice_readChannelSetting (const SoapySDRDevice *device, const int direction, const size_t channel, const char *key)
SOAPY_SDR_API char **	SoapySDRDevice_listGPIOBanks (const SoapySDRDevice *device, size_t *length)
SOAPY_SDR_API int	SoapySDRDevice_writeGPIO (SoapySDRDevice *device, const char *bank, const unsigned value)
SOAPY_SDR_API int	SoapySDRDevice_writeGPIOMasked (SoapySDRDevice *device, const char *bank, const unsigned value, const unsigned mask)
SOAPY_SDR_API unsigned	SoapySDRDevice_readGPIO (const SoapySDRDevice *device, const char *bank)
SOAPY_SDR_API int	SoapySDRDevice_writeGPIODir (SoapySDRDevice *device, const char *bank, const unsigned dir)
SOAPY_SDR_API int	SoapySDRDevice_writeGPIODirMasked (SoapySDRDevice *device, const char *bank, const unsigned dir, const unsigned mask)
SOAPY_SDR_API unsigned	SoapySDRDevice_readGPIODir (const SoapySDRDevice *device, const char *bank)
SOAPY_SDR_API int	SoapySDRDevice_writeI2C (SoapySDRDevice *device, const int addr, const char *data, const size_t numBytes)
SOAPY_SDR_API char *	SoapySDRDevice_readI2C (SoapySDRDevice *device, const int addr, size_t *numBytes)
SOAPY_SDR_API unsigned	SoapySDRDevice_transactSPI (SoapySDRDevice *device, const int addr, const unsigned data, const size_t numBits)
SOAPY_SDR_API char **	SoapySDRDevice_listUARTs (const SoapySDRDevice *device, size_t *length)
SOAPY_SDR_API int	SoapySDRDevice_writeUART (SoapySDRDevice *device, const char *which, const char *data)
SOAPY_SDR_API char *	SoapySDRDevice_readUART (const SoapySDRDevice *device, const char *which, const long timeoutUs)
SOAPY_SDR_API void *	SoapySDRDevice_getNativeDeviceHandle (const SoapySDRDevice *device)

Detailed Description

Interface definition for Soapy SDR devices. This is the C version of the Device interface.

General design rules about the API: The caller must free non-const array results.

Copyright

Copyright (c) 2014-2018 Josh Blum Copyright (c) 2016-2016 Bastille Networks 2019-2021 Nicholas Corgan SPDX-License-Identifier: BSL-1.0

Typedef Documentation

SoapySDRDevice

typedef struct SoapySDRDevice SoapySDRDevice

Forward declaration of device handle.

SoapySDRStream

typedef struct SoapySDRStream SoapySDRStream

Forward declaration of stream handle.

Function Documentation

SoapySDRDevice_acquireReadBuffer()

SOAPY_SDR_API int SoapySDRDevice_acquireReadBuffer	(	SoapySDRDevice *	device,
		SoapySDRStream *	stream,
		size_t *	handle,
		const void **	buffs,
		int *	flags,
		long long *	timeNs,
		const long	timeoutUs
	)

Acquire direct buffers from a receive stream. This call is part of the direct buffer access API.

The buffs array will be filled with a stream pointer for each channel. Each pointer can be read up to the number of return value elements.

The handle will be set by the implementation so that the caller may later release access to the buffers with releaseReadBuffer(). Handle represents an index into the internal scatter/gather table such that handle is between 0 and num direct buffers - 1.

Parameters

device	a pointer to a device instance
stream	the opaque pointer to a stream handle
handle	an index value used in the release() call
buffs	an array of void* buffers num chans in size
flags	optional flag indicators about the result
timeNs	the buffer's timestamp in nanoseconds
timeoutUs	the timeout in microseconds

Returns

the number of elements read per buffer or error code

SoapySDRDevice_acquireWriteBuffer()

SOAPY_SDR_API int SoapySDRDevice_acquireWriteBuffer	(	SoapySDRDevice *	device,
		SoapySDRStream *	stream,
		size_t *	handle,
		void **	buffs,
		const long	timeoutUs
	)

Acquire direct buffers from a transmit stream. This call is part of the direct buffer access API.

The buffs array will be filled with a stream pointer for each channel. Each pointer can be written up to the number of return value elements.

The handle will be set by the implementation so that the caller may later release access to the buffers with releaseWriteBuffer(). Handle represents an index into the internal scatter/gather table such that handle is between 0 and num direct buffers - 1.

Parameters

device	a pointer to a device instance
stream	the opaque pointer to a stream handle
handle	an index value used in the release() call
buffs	an array of void* buffers num chans in size
timeoutUs	the timeout in microseconds

Returns

the number of available elements per buffer or error

SoapySDRDevice_activateStream()

SOAPY_SDR_API int SoapySDRDevice_activateStream	(	SoapySDRDevice *	device,
		SoapySDRStream *	stream,
		const int	flags,
		const long long	timeNs,
		const size_t	numElems
	)

Activate a stream. Call activate to prepare a stream before using read/write(). The implementation control switches or stimulate data flow.

The timeNs is only valid when the flags have SOAPY_SDR_HAS_TIME. The numElems count can be used to request a finite burst size. The SOAPY_SDR_END_BURST flag can signal end on the finite burst. Not all implementations will support the full range of options. In this case, the implementation returns SOAPY_SDR_NOT_SUPPORTED.

Parameters

device	a pointer to a device instance
stream	the opaque pointer to a stream handle
flags	optional flag indicators about the stream
timeNs	optional activation time in nanoseconds
numElems	optional element count for burst control

Returns

0 for success or error code on failure

SoapySDRDevice_closeStream()

SOAPY_SDR_API int SoapySDRDevice_closeStream	(	SoapySDRDevice *	device,
		SoapySDRStream *	stream
	)

Close an open stream created by setupStream

Parameters

device	a pointer to a device instance
stream	the opaque pointer to a stream handle

Returns

0 for success or error code on failure

SoapySDRDevice_deactivateStream()

SOAPY_SDR_API int SoapySDRDevice_deactivateStream	(	SoapySDRDevice *	device,
		SoapySDRStream *	stream,
		const int	flags,
		const long long	timeNs
	)

Deactivate a stream. Call deactivate when not using using read/write(). The implementation control switches or halt data flow.

The timeNs is only valid when the flags have SOAPY_SDR_HAS_TIME. Not all implementations will support the full range of options. In this case, the implementation returns SOAPY_SDR_NOT_SUPPORTED.

Parameters

device	a pointer to a device instance
stream	the opaque pointer to a stream handle
flags	optional flag indicators about the stream
timeNs	optional deactivation time in nanoseconds

Returns

0 for success or error code on failure

SoapySDRDevice_enumerate()

SOAPY_SDR_API SoapySDRKwargs* SoapySDRDevice_enumerate	(	const SoapySDRKwargs *	args,
		size_t *	length
	)

Enumerate a list of available devices on the system.

Parameters

	args	device construction key/value argument filters
[out]	length	the number of elements in the result.

Returns

a list of arguments strings, each unique to a device

SoapySDRDevice_enumerateStrArgs()

SOAPY_SDR_API SoapySDRKwargs* SoapySDRDevice_enumerateStrArgs	(	const char *	args,
		size_t *	length
	)

Enumerate a list of available devices on the system. Markup format for args: "keyA=valA, keyB=valB".

Parameters

	args	a markup string of key/value argument filters
[out]	length	the number of elements in the result.

Returns

a list of arguments strings, each unique to a device

SoapySDRDevice_getAntenna()

SOAPY_SDR_API char* SoapySDRDevice_getAntenna	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Get the selected antenna on a chain.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

the name of an available antenna

SoapySDRDevice_getBandwidth()

SOAPY_SDR_API double SoapySDRDevice_getBandwidth	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Get the baseband filter width of the chain.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

the baseband filter width in Hz

SoapySDRDevice_getBandwidthRange()

SOAPY_SDR_API SoapySDRRange* SoapySDRDevice_getBandwidthRange	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		size_t *	length
	)

Get the range of possible baseband filter widths.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	length	the number of ranges

Returns

a list of bandwidth ranges in Hz

SoapySDRDevice_getChannelInfo()

SOAPY_SDR_API SoapySDRKwargs SoapySDRDevice_getChannelInfo	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Get channel info given the streaming direction

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	the channel number to get info for

Returns

channel information

SoapySDRDevice_getChannelSensorInfo()

SOAPY_SDR_API SoapySDRArgInfo SoapySDRDevice_getChannelSensorInfo	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const char *	key
	)

Get meta-information about a channel sensor. Example: displayable name, type, range.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
key	the ID name of an available sensor

Returns

meta-information about a sensor

SoapySDRDevice_getChannelSettingInfo()

SOAPY_SDR_API SoapySDRArgInfo* SoapySDRDevice_getChannelSettingInfo	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		size_t *	length
	)

Describe the allowed keys and values used for channel settings.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	length	the number of sensor names

Returns

a list of argument info structures

SoapySDRDevice_getClockSource()

SOAPY_SDR_API char* SoapySDRDevice_getClockSource

(

const SoapySDRDevice *

device

)

Get the clock source of the device

Parameters

device

a pointer to a device instance

Returns

the name of a clock source

SoapySDRDevice_getDCOffset()

SOAPY_SDR_API int SoapySDRDevice_getDCOffset	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		double *	offsetI,
		double *	offsetQ
	)

Get the frontend DC offset correction.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	offsetI	the relative correction (1.0 max)
[out]	offsetQ	the relative correction (1.0 max)

Returns

0 for success or error code on failure

SoapySDRDevice_getDCOffsetMode()

SOAPY_SDR_API bool SoapySDRDevice_getDCOffsetMode	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Get the automatic DC offset corrections mode.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

true for automatic offset correction

SoapySDRDevice_getDirectAccessBufferAddrs()

SOAPY_SDR_API int SoapySDRDevice_getDirectAccessBufferAddrs	(	SoapySDRDevice *	device,
		SoapySDRStream *	stream,
		const size_t	handle,
		void **	buffs
	)

Get the buffer addresses for a scatter/gather table entry. When the underlying DMA implementation uses scatter/gather then this call provides the user addresses for that table.

Example: The caller may query the DMA memory addresses once after stream creation to pre-allocate a re-usable ring-buffer.

Parameters

device	a pointer to a device instance
stream	the opaque pointer to a stream handle
handle	an index value between 0 and num direct buffers - 1
buffs	an array of void* buffers num chans in size

Returns

0 for success or error code when not supported

SoapySDRDevice_getDriverKey()

SOAPY_SDR_API char* SoapySDRDevice_getDriverKey

(

const SoapySDRDevice *

device

)

A key that uniquely identifies the device driver. This key identifies the underlying implementation. Serveral variants of a product may share a driver.

Parameters

device

a pointer to a device instance

SoapySDRDevice_getFrequency()

SOAPY_SDR_API double SoapySDRDevice_getFrequency	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Get the overall center frequency of the chain.

• For RX, this specifies the down-conversion frequency.
• For TX, this specifies the up-conversion frequency.

  Parameters

  device	a pointer to a device instance
  direction	the channel direction RX or TX
  channel	an available channel on the device

  Returns

  the center frequency in Hz

SoapySDRDevice_getFrequencyArgsInfo()

SOAPY_SDR_API SoapySDRArgInfo* SoapySDRDevice_getFrequencyArgsInfo	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		size_t *	length
	)

Query the argument info description for tune args.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	length	the number of argument infos

Returns

a list of argument info structures

SoapySDRDevice_getFrequencyComponent()

SOAPY_SDR_API double SoapySDRDevice_getFrequencyComponent	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const char *	name
	)

Get the frequency of a tunable element in the chain.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
name	the name of a tunable element

Returns

the tunable element's frequency in Hz

SoapySDRDevice_getFrequencyCorrection()

SOAPY_SDR_API double SoapySDRDevice_getFrequencyCorrection	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Get the frontend frequency correction value.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

the correction value in PPM

SoapySDRDevice_getFrequencyRange()

SOAPY_SDR_API SoapySDRRange* SoapySDRDevice_getFrequencyRange	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		size_t *	length
	)

Get the range of overall frequency values.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	length	the number of ranges

Returns

a list of frequency ranges in Hz

SoapySDRDevice_getFrequencyRangeComponent()

SOAPY_SDR_API SoapySDRRange* SoapySDRDevice_getFrequencyRangeComponent	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const char *	name,
		size_t *	length
	)

Get the range of tunable values for the specified element.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
	name	the name of a tunable element
[out]	length	the number of ranges

Returns

a list of frequency ranges in Hz

SoapySDRDevice_getFrontendMapping()

SOAPY_SDR_API char* SoapySDRDevice_getFrontendMapping	(	const SoapySDRDevice *	device,
		const int	direction
	)

Get the mapping configuration string.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX

Returns

the vendor-specific mapping string

SoapySDRDevice_getFullDuplex()

SOAPY_SDR_API bool SoapySDRDevice_getFullDuplex	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Find out if the specified channel is full or half duplex.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

true for full duplex, false for half duplex

SoapySDRDevice_getGain()

SOAPY_SDR_API double SoapySDRDevice_getGain	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Get the overall value of the gain elements in a chain.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

the value of the gain in dB

SoapySDRDevice_getGainElement()

SOAPY_SDR_API double SoapySDRDevice_getGainElement	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const char *	name
	)

Get the value of an individual amplification element in a chain.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
name	the name of an amplification element

Returns

the value of the gain in dB

SoapySDRDevice_getGainElementRange()

SOAPY_SDR_API SoapySDRRange SoapySDRDevice_getGainElementRange	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const char *	name
	)

Get the range of possible gain values for a specific element.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
name	the name of an amplification element

Returns

a list of gain ranges in dB

SoapySDRDevice_getGainMode()

SOAPY_SDR_API bool SoapySDRDevice_getGainMode	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Get the automatic gain mode on the chain.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

true for automatic gain setting

SoapySDRDevice_getGainRange()

SOAPY_SDR_API SoapySDRRange SoapySDRDevice_getGainRange	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Get the overall range of possible gain values.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

a list of gain ranges in dB

SoapySDRDevice_getHardwareInfo()

SOAPY_SDR_API SoapySDRKwargs SoapySDRDevice_getHardwareInfo

(

const SoapySDRDevice *

device

)

Query a dictionary of available device information. This dictionary can any number of values like vendor name, product name, revisions, serials... This information can be displayed to the user to help identify the instantiated device.

Parameters

device

a pointer to a device instance

SoapySDRDevice_getHardwareKey()

SOAPY_SDR_API char* SoapySDRDevice_getHardwareKey

(

const SoapySDRDevice *

device

)

A key that uniquely identifies the hardware. This key should be meaningful to the user to optimize for the underlying hardware.

Parameters

device

a pointer to a device instance

SoapySDRDevice_getHardwareTime()

SOAPY_SDR_API long long SoapySDRDevice_getHardwareTime	(	const SoapySDRDevice *	device,
		const char *	what
	)

Read the time from the hardware clock on the device. The what argument can refer to a specific time counter.

Parameters

device	a pointer to a device instance
what	optional argument

Returns

the time in nanoseconds

SoapySDRDevice_getIQBalance()

SOAPY_SDR_API int SoapySDRDevice_getIQBalance	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		double *	balanceI,
		double *	balanceQ
	)

Get the frontend IQ balance correction.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	balanceI	the relative correction (1.0 max)
[out]	balanceQ	the relative correction (1.0 max)

Returns

0 for success or error code on failure

SoapySDRDevice_getIQBalanceMode()

SOAPY_SDR_API bool SoapySDRDevice_getIQBalanceMode	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Get the automatic frontend IQ balance corrections mode.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

true for automatic correction

SoapySDRDevice_getMasterClockRate()

SOAPY_SDR_API double SoapySDRDevice_getMasterClockRate

(

const SoapySDRDevice *

device

)

Get the master clock rate of the device.

Parameters

device

a pointer to a device instance

Returns

the clock rate in Hz

SoapySDRDevice_getMasterClockRates()

SOAPY_SDR_API SoapySDRRange* SoapySDRDevice_getMasterClockRates	(	const SoapySDRDevice *	device,
		size_t *	length
	)

Get the range of available master clock rates.

Parameters

	device	a pointer to a device instance
[out]	length	the number of ranges

Returns

a list of clock rate ranges in Hz

SoapySDRDevice_getNativeDeviceHandle()

SOAPY_SDR_API void* SoapySDRDevice_getNativeDeviceHandle

(

const SoapySDRDevice *

device

)

A handle to the native device used by the driver. The implementation may return a null value if it does not support or does not wish to provide access to the native handle.

Parameters

device

a pointer to a device instance

Returns

a handle to the native device or null

SoapySDRDevice_getNativeStreamFormat()

SOAPY_SDR_API char* SoapySDRDevice_getNativeStreamFormat	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		double *	fullScale
	)

Get the hardware's native stream format for this channel. This is the format used by the underlying transport layer, and the direct buffer access API calls (when available).

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	fullScale	the maximum possible value

Returns

the native stream buffer format string

SoapySDRDevice_getNumChannels()

SOAPY_SDR_API size_t SoapySDRDevice_getNumChannels	(	const SoapySDRDevice *	device,
		const int	direction
	)

Get a number of channels given the streaming direction

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX

Returns

the number of channels

SoapySDRDevice_getNumDirectAccessBuffers()

SOAPY_SDR_API size_t SoapySDRDevice_getNumDirectAccessBuffers	(	SoapySDRDevice *	device,
		SoapySDRStream *	stream
	)

How many direct access buffers can the stream provide? This is the number of times the user can call acquire() on a stream without making subsequent calls to release(). A return value of 0 means that direct access is not supported.

Parameters

device	a pointer to a device instance
stream	the opaque pointer to a stream handle

Returns

the number of direct access buffers or 0

SoapySDRDevice_getReferenceClockRate()

SOAPY_SDR_API double SoapySDRDevice_getReferenceClockRate

(

const SoapySDRDevice *

device

)

Get the reference clock rate of the device.

Parameters

device

a pointer to a device instance

Returns

the clock rate in Hz

SoapySDRDevice_getReferenceClockRates()

SOAPY_SDR_API SoapySDRRange* SoapySDRDevice_getReferenceClockRates	(	const SoapySDRDevice *	device,
		size_t *	length
	)

Get the range of available reference clock rates.

Parameters

	device	a pointer to a device instance
[out]	length	the number of sources

Returns

a list of clock rate ranges in Hz

SoapySDRDevice_getSampleRate()

SOAPY_SDR_API double SoapySDRDevice_getSampleRate	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Get the baseband sample rate of the chain.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

the sample rate in samples per second

SoapySDRDevice_getSampleRateRange()

SOAPY_SDR_API SoapySDRRange* SoapySDRDevice_getSampleRateRange	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		size_t *	length
	)

Get the range of possible baseband sample rates.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	length	the number of sample rates

Returns

a list of sample rate ranges in samples per second

SoapySDRDevice_getSensorInfo()

SOAPY_SDR_API SoapySDRArgInfo SoapySDRDevice_getSensorInfo	(	const SoapySDRDevice *	device,
		const char *	key
	)

Get meta-information about a sensor. Example: displayable name, type, range.

Parameters

device	a pointer to a device instance
key	the ID name of an available sensor

Returns

meta-information about a sensor

SoapySDRDevice_getSettingInfo()

SOAPY_SDR_API SoapySDRArgInfo* SoapySDRDevice_getSettingInfo	(	const SoapySDRDevice *	device,
		size_t *	length
	)

Describe the allowed keys and values used for settings.

Parameters

	device	a pointer to a device instance
[out]	length	the number of sensor names

Returns

a list of argument info structures

SoapySDRDevice_getStreamArgsInfo()

SOAPY_SDR_API SoapySDRArgInfo* SoapySDRDevice_getStreamArgsInfo	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		size_t *	length
	)

Query the argument info description for stream args.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	length	the number of argument infos

Returns

a list of argument info structures

SoapySDRDevice_getStreamFormats()

SOAPY_SDR_API char** SoapySDRDevice_getStreamFormats	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		size_t *	length
	)

Query a list of the available stream formats.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	length	the number of format strings

Returns

a list of allowed format strings. See SoapySDRDevice_setupStream() for the format syntax.

SoapySDRDevice_getStreamMTU()

SOAPY_SDR_API size_t SoapySDRDevice_getStreamMTU	(	const SoapySDRDevice *	device,
		SoapySDRStream *	stream
	)

Get the stream's maximum transmission unit (MTU) in number of elements. The MTU specifies the maximum payload transfer in a stream operation. This value can be used as a stream buffer allocation size that can best optimize throughput given the underlying stream implementation.

Parameters

device	a pointer to a device instance
stream	the opaque pointer to a stream handle

Returns

the MTU in number of stream elements (never zero)

SoapySDRDevice_getTimeSource()

SOAPY_SDR_API char* SoapySDRDevice_getTimeSource

(

const SoapySDRDevice *

device

)

Get the time source of the device

Parameters

device

a pointer to a device instance

Returns

the name of a time source

SoapySDRDevice_hasDCOffset()

SOAPY_SDR_API bool SoapySDRDevice_hasDCOffset	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Does the device support frontend DC offset correction?

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

true if DC offset corrections are supported

SoapySDRDevice_hasDCOffsetMode()

SOAPY_SDR_API bool SoapySDRDevice_hasDCOffsetMode	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Does the device support automatic DC offset corrections?

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

true if automatic corrections are supported

SoapySDRDevice_hasFrequencyCorrection()

SOAPY_SDR_API bool SoapySDRDevice_hasFrequencyCorrection	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Does the device support frontend frequency correction?

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

true if frequency corrections are supported

SoapySDRDevice_hasGainMode()

SOAPY_SDR_API bool SoapySDRDevice_hasGainMode	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Does the device support automatic gain control?

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

true for automatic gain control

SoapySDRDevice_hasHardwareTime()

SOAPY_SDR_API bool SoapySDRDevice_hasHardwareTime	(	const SoapySDRDevice *	device,
		const char *	what
	)

Does this device have a hardware clock?

Parameters

device	a pointer to a device instance
what	optional argument

Returns

true if the hardware clock exists

SoapySDRDevice_hasIQBalance()

SOAPY_SDR_API bool SoapySDRDevice_hasIQBalance	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Does the device support frontend IQ balance correction?

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

true if IQ balance corrections are supported

SoapySDRDevice_hasIQBalanceMode()

SOAPY_SDR_API bool SoapySDRDevice_hasIQBalanceMode	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel
	)

Does the device support automatic frontend IQ balance correction?

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device

Returns

true if automatic IQ balance corrections are supported

SoapySDRDevice_lastError()

const SOAPY_SDR_API char* SoapySDRDevice_lastError

(

void

)

Get the last error message after a device call fails. When an device API call throws, the C bindings catch the exception, store its message in thread-safe storage, and return a non-zero status code to indicate failure. Use lastError() to access the exception's error message.

SoapySDRDevice_lastStatus()

SOAPY_SDR_API int SoapySDRDevice_lastStatus

(

void

)

Get the last status code after a Device API call. The status code is cleared on entry to each Device call. When an device API call throws, the C bindings catch the exception, and set a non-zero last status code. Use lastStatus() to determine success/failure for Device calls without integer status return codes.

SoapySDRDevice_listAntennas()

SOAPY_SDR_API char** SoapySDRDevice_listAntennas	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		size_t *	length
	)

Get a list of available antennas to select on a given chain.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	length	the number of antenna names

Returns

a list of available antenna names

SoapySDRDevice_listBandwidths()

SOAPY_SDR_API double* SoapySDRDevice_listBandwidths	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		size_t *	length
	)

Get the range of possible baseband filter widths.

Deprecated:

replaced by getBandwidthRange()

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	length	the number of bandwidths

Returns

a list of possible bandwidths in Hz

SoapySDRDevice_listChannelSensors()

SOAPY_SDR_API char** SoapySDRDevice_listChannelSensors	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		size_t *	length
	)

List the available channel readback sensors. A sensor can represent a reference lock, RSSI, temperature.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	length	the number of sensor names

Returns

a list of available sensor string names

SoapySDRDevice_listClockSources()

SOAPY_SDR_API char** SoapySDRDevice_listClockSources	(	const SoapySDRDevice *	device,
		size_t *	length
	)

Get the list of available clock sources.

Parameters

	device	a pointer to a device instance
[out]	length	the number of sources

Returns

a list of clock source names

SoapySDRDevice_listFrequencies()

SOAPY_SDR_API char** SoapySDRDevice_listFrequencies	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		size_t *	length
	)

List available tunable elements in the chain. Elements should be in order RF to baseband.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel
[out]	length	the number names

Returns

a list of tunable elements by name

SoapySDRDevice_listGains()

SOAPY_SDR_API char** SoapySDRDevice_listGains	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		size_t *	length
	)

List available amplification elements. Elements should be in order RF to baseband.

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel
[out]	length	the number of gain names

Returns

a list of gain string names

SoapySDRDevice_listGPIOBanks()

SOAPY_SDR_API char** SoapySDRDevice_listGPIOBanks	(	const SoapySDRDevice *	device,
		size_t *	length
	)

Get a list of available GPIO banks by name.

Parameters

[out]	length	the number of GPIO banks
	device	a pointer to a device instance

SoapySDRDevice_listRegisterInterfaces()

SOAPY_SDR_API char** SoapySDRDevice_listRegisterInterfaces	(	const SoapySDRDevice *	device,
		size_t *	length
	)

Get a list of available register interfaces by name.

Parameters

	device	a pointer to a device instance
[out]	length	the number of interfaces

Returns

a list of available register interfaces

SoapySDRDevice_listSampleRates()

SOAPY_SDR_API double* SoapySDRDevice_listSampleRates	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		size_t *	length
	)

Get the range of possible baseband sample rates.

Deprecated:

replaced by getSampleRateRange()

Parameters

	device	a pointer to a device instance
	direction	the channel direction RX or TX
	channel	an available channel on the device
[out]	length	the number of sample rates

Returns

a list of possible rates in samples per second

SoapySDRDevice_listSensors()

SOAPY_SDR_API char** SoapySDRDevice_listSensors	(	const SoapySDRDevice *	device,
		size_t *	length
	)

List the available global readback sensors. A sensor can represent a reference lock, RSSI, temperature.

Parameters

	device	a pointer to a device instance
[out]	length	the number of sensor names

Returns

a list of available sensor string names

SoapySDRDevice_listTimeSources()

SOAPY_SDR_API char** SoapySDRDevice_listTimeSources	(	const SoapySDRDevice *	device,
		size_t *	length
	)

Get the list of available time sources.

Parameters

	device	a pointer to a device instance
[out]	length	the number of sources

Returns

a list of time source names

SoapySDRDevice_listUARTs()

SOAPY_SDR_API char** SoapySDRDevice_listUARTs	(	const SoapySDRDevice *	device,
		size_t *	length
	)

Enumerate the available UART devices.

Parameters

	device	a pointer to a device instance
[out]	length	the number of UART names

Returns

a list of names of available UARTs

SoapySDRDevice_make()

SOAPY_SDR_API SoapySDRDevice* SoapySDRDevice_make

(

const SoapySDRKwargs *

args

)

Make a new Device object given device construction args. The device pointer will be stored in a table so subsequent calls with the same arguments will produce the same device. For every call to make, there should be a matched call to unmake.

Parameters

args	device construction key/value argument map

Returns

a pointer to a new Device object

SoapySDRDevice_make_list()

SOAPY_SDR_API SoapySDRDevice** SoapySDRDevice_make_list	(	const SoapySDRKwargs *	argsList,
		const size_t	length
	)

Create a list of devices from a list of construction arguments. This is a convenience call to parallelize device construction, and is fundamentally a parallel for loop of make(Kwargs).

Parameters

argsList	a list of device arguments per each device
length	the length of the argsList array

Returns

a list of device pointers per each specified argument

SoapySDRDevice_make_listStrArgs()

SOAPY_SDR_API SoapySDRDevice** SoapySDRDevice_make_listStrArgs	(	const char *const *	argsList,
		const size_t	length
	)

Create a list of devices from a list of construction arguments. This is a convenience call to parallelize device construction, and is fundamentally a parallel for loop of makeStrArgs(args).

Parameters

argsList	a list of device arguments per each device
length	the length of the argsList array

Returns

a list of device pointers per each specified argument

SoapySDRDevice_makeStrArgs()

SOAPY_SDR_API SoapySDRDevice* SoapySDRDevice_makeStrArgs

(

const char *

args

)

Make a new Device object given device construction args. The device pointer will be stored in a table so subsequent calls with the same arguments will produce the same device. For every call to make, there should be a matched call to unmake.

Parameters

args	a markup string of key/value arguments

Returns

a pointer to a new Device object or null for error

SoapySDRDevice_readChannelSensor()

SOAPY_SDR_API char* SoapySDRDevice_readChannelSensor	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const char *	key
	)

Readback a channel sensor given the name. The value returned is a string which can represent a boolean ("true"/"false"), an integer, or float.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
key	the ID name of an available sensor

Returns

the current value of the sensor

SoapySDRDevice_readChannelSetting()

SOAPY_SDR_API char* SoapySDRDevice_readChannelSetting	(	const SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const char *	key
	)

Read an arbitrary channel setting on the device.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
key	the setting identifier

Returns

the setting value

SoapySDRDevice_readGPIO()

SOAPY_SDR_API unsigned SoapySDRDevice_readGPIO	(	const SoapySDRDevice *	device,
		const char *	bank
	)

Readback the value of a GPIO bank.

Parameters

device	a pointer to a device instance
bank	the name of an available bank

Returns

an integer representing GPIO bits

SoapySDRDevice_readGPIODir()

SOAPY_SDR_API unsigned SoapySDRDevice_readGPIODir	(	const SoapySDRDevice *	device,
		const char *	bank
	)

Read the data direction of a GPIO bank.

Parameters

device	a pointer to a device instance 1 bits represent outputs, 0 bits represent inputs.
bank	the name of an available bank

Returns

an integer representing data direction bits

SoapySDRDevice_readI2C()

SOAPY_SDR_API char* SoapySDRDevice_readI2C	(	SoapySDRDevice *	device,
		const int	addr,
		size_t *	numBytes
	)

Read from an available I2C slave. If the device contains multiple I2C masters, the address bits can encode which master. Pass the number of bytes to be read in via numBytes; numBytes will be set to the number of actual bytes read.

Parameters

	device	a pointer to a device instance
	addr	the address of the slave
[in,out]	numBytes	the number of bytes to read

Returns

an array of bytes read from the slave

SoapySDRDevice_readRegister()

SOAPY_SDR_API unsigned SoapySDRDevice_readRegister	(	const SoapySDRDevice *	device,
		const char *	name,
		const unsigned	addr
	)

Read a register on the device given the interface name.

Parameters

device	a pointer to a device instance
name	the name of a available register interface
addr	the register address

Returns

the register value

SoapySDRDevice_readRegisters()

SOAPY_SDR_API unsigned* SoapySDRDevice_readRegisters	(	const SoapySDRDevice *	device,
		const char *	name,
		const unsigned	addr,
		size_t *	length
	)

Read a memory block on the device given the interface name. Pass the number of words to be read in via length; length will be set to the number of actual words read.

Parameters

	device	a pointer to a device instance
	name	the name of a available memory block interface
	addr	the memory block start address
[in,out]	length	number of words to be read from memory block

Returns

the memory block content

SoapySDRDevice_readSensor()

SOAPY_SDR_API char* SoapySDRDevice_readSensor	(	const SoapySDRDevice *	device,
		const char *	key
	)

Readback a global sensor given the name. The value returned is a string which can represent a boolean ("true"/"false"), an integer, or float.

Parameters

device	a pointer to a device instance
key	the ID name of an available sensor

Returns

the current value of the sensor

SoapySDRDevice_readSetting()

SOAPY_SDR_API char* SoapySDRDevice_readSetting	(	const SoapySDRDevice *	device,
		const char *	key
	)

Read an arbitrary setting on the device.

Parameters

device	a pointer to a device instance
key	the setting identifier

Returns

the setting value

SoapySDRDevice_readStream()

SOAPY_SDR_API int SoapySDRDevice_readStream	(	SoapySDRDevice *	device,
		SoapySDRStream *	stream,
		void *const *	buffs,
		const size_t	numElems,
		int *	flags,
		long long *	timeNs,
		const long	timeoutUs
	)

Read elements from a stream for reception. This is a multi-channel call, and buffs should be an array of void *, where each pointer will be filled with data from a different channel.

Client code compatibility: The readStream() call should be well defined at all times, including prior to activation and after deactivation. When inactive, readStream() should implement the timeout specified by the caller and return SOAPY_SDR_TIMEOUT.

Parameters

	device	a pointer to a device instance
	stream	the opaque pointer to a stream handle
	buffs	an array of void* buffers num chans in size
	numElems	the number of elements in each buffer
[out]	flags	optional flag indicators about the result
[out]	timeNs	the buffer's timestamp in nanoseconds
	timeoutUs	the timeout in microseconds

Returns

the number of elements read per buffer or error code

SoapySDRDevice_readStreamStatus()

SOAPY_SDR_API int SoapySDRDevice_readStreamStatus	(	SoapySDRDevice *	device,
		SoapySDRStream *	stream,
		size_t *	chanMask,
		int *	flags,
		long long *	timeNs,
		const long	timeoutUs
	)

Readback status information about a stream. This call is typically used on a transmit stream to report time errors, underflows, and burst completion.

Client code compatibility: Client code may continually poll readStreamStatus() in a loop. Implementations of readStreamStatus() should wait in the call for a status change event or until the timeout expiration. When stream status is not implemented on a particular stream, readStreamStatus() should return SOAPY_SDR_NOT_SUPPORTED. Client code may use this indication to disable a polling loop.

Parameters

device	a pointer to a device instance
stream	the opaque pointer to a stream handle
chanMask	to which channels this status applies
flags	optional input flags and output flags
timeNs	the buffer's timestamp in nanoseconds
timeoutUs	the timeout in microseconds

Returns

0 for success or error code like timeout

SoapySDRDevice_readUART()

SOAPY_SDR_API char* SoapySDRDevice_readUART	(	const SoapySDRDevice *	device,
		const char *	which,
		const long	timeoutUs
	)

Read bytes from a UART until timeout or newline. Its up to the implementation to set the baud rate, carriage return settings, flushing on newline.

Parameters

device	a pointer to a device instance
which	the name of an available UART
timeoutUs	a timeout in microseconds

Returns

a null terminated array of bytes

SoapySDRDevice_releaseReadBuffer()

SOAPY_SDR_API void SoapySDRDevice_releaseReadBuffer	(	SoapySDRDevice *	device,
		SoapySDRStream *	stream,
		const size_t	handle
	)

Release an acquired buffer back to the receive stream. This call is part of the direct buffer access API.

Parameters

device	a pointer to a device instance
stream	the opaque pointer to a stream handle
handle	the opaque handle from the acquire() call

SoapySDRDevice_releaseWriteBuffer()

SOAPY_SDR_API void SoapySDRDevice_releaseWriteBuffer	(	SoapySDRDevice *	device,
		SoapySDRStream *	stream,
		const size_t	handle,
		const size_t	numElems,
		int *	flags,
		const long long	timeNs
	)

Release an acquired buffer back to the transmit stream. This call is part of the direct buffer access API.

Stream meta-data is provided as part of the release call, and not the acquire call so that the caller may acquire buffers without committing to the contents of the meta-data, which can be determined by the user as the buffers are filled.

Parameters

device	a pointer to a device instance
stream	the opaque pointer to a stream handle
handle	the opaque handle from the acquire() call
numElems	the number of elements written to each buffer
flags	optional input flags and output flags
timeNs	the buffer's timestamp in nanoseconds

SoapySDRDevice_setAntenna()

SOAPY_SDR_API int SoapySDRDevice_setAntenna	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const char *	name
	)

Set the selected antenna on a chain.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
name	the name of an available antenna

Returns

an error code or 0 for success

SoapySDRDevice_setBandwidth()

SOAPY_SDR_API int SoapySDRDevice_setBandwidth	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const double	bw
	)

Set the baseband filter width of the chain.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
bw	the baseband filter width in Hz

Returns

an error code or 0 for success

SoapySDRDevice_setClockSource()

SOAPY_SDR_API int SoapySDRDevice_setClockSource	(	SoapySDRDevice *	device,
		const char *	source
	)

Set the clock source on the device

Parameters

device	a pointer to a device instance
source	the name of a clock source

Returns

an error code or 0 for success

SoapySDRDevice_setCommandTime()

SOAPY_SDR_API int SoapySDRDevice_setCommandTime	(	SoapySDRDevice *	device,
		const long long	timeNs,
		const char *	what
	)

Set the time of subsequent configuration calls. The what argument can refer to a specific command queue. Implementations may use a time of 0 to clear.

Deprecated:

replaced by setHardwareTime()

Parameters

device	a pointer to a device instance
timeNs	time in nanoseconds
what	optional argument

Returns

0 for success or error code on failure

SoapySDRDevice_setDCOffset()

SOAPY_SDR_API int SoapySDRDevice_setDCOffset	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const double	offsetI,
		const double	offsetQ
	)

Set the frontend DC offset correction.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
offsetI	the relative correction (1.0 max)
offsetQ	the relative correction (1.0 max)

Returns

an error code or 0 for success

SoapySDRDevice_setDCOffsetMode()

SOAPY_SDR_API int SoapySDRDevice_setDCOffsetMode	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const bool	automatic
	)

Set the automatic DC offset corrections mode.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
automatic	true for automatic offset correction

Returns

an error code or 0 for success

SoapySDRDevice_setFrequency()

SOAPY_SDR_API int SoapySDRDevice_setFrequency	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const double	frequency,
		const SoapySDRKwargs *	args
	)

Set the center frequency of the chain.

• For RX, this specifies the down-conversion frequency.
• For TX, this specifies the up-conversion frequency.

The default implementation of setFrequency() will tune the "RF" component as close as possible to the requested center frequency. Tuning inaccuracies will be compensated for with the "BB" component.

The args can be used to augment the tuning algorithm.

• Use "OFFSET" to specify an "RF" tuning offset, usually with the intention of moving the LO out of the passband. The offset will be compensated for using the "BB" component.
• Use the name of a component for the key and a frequency in Hz as the value (any format) to enforce a specific frequency. The other components will be tuned with compensation to achieve the specified overall frequency.
• Use the name of a component for the key and the value "IGNORE" so that the tuning algorithm will avoid altering the component.
• Vendor specific implementations can also use the same args to augment tuning in other ways such as specifying fractional vs integer N tuning.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
frequency	the center frequency in Hz
args	optional tuner arguments

Returns

an error code or 0 for success

SoapySDRDevice_setFrequencyComponent()

SOAPY_SDR_API int SoapySDRDevice_setFrequencyComponent	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const char *	name,
		const double	frequency,
		const SoapySDRKwargs *	args
	)

Tune the center frequency of the specified element.

• For RX, this specifies the down-conversion frequency.
• For TX, this specifies the up-conversion frequency.

Recommended names used to represent tunable components:

• "CORR" - freq error correction in PPM
• "RF" - frequency of the RF frontend
• "BB" - frequency of the baseband DSP

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
name	the name of a tunable element
frequency	the center frequency in Hz
args	optional tuner arguments

Returns

an error code or 0 for success

SoapySDRDevice_setFrequencyCorrection()

SOAPY_SDR_API int SoapySDRDevice_setFrequencyCorrection	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const double	value
	)

Fine tune the frontend frequency correction.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
value	the correction in PPM

Returns

an error code or 0 for success

SoapySDRDevice_setFrontendMapping()

SOAPY_SDR_API int SoapySDRDevice_setFrontendMapping	(	SoapySDRDevice *	device,
		const int	direction,
		const char *	mapping
	)

Set the frontend mapping of available DSP units to RF frontends. This mapping controls channel mapping and channel availability.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
mapping	a vendor-specific mapping string

Returns

an error code or 0 for success

SoapySDRDevice_setGain()

SOAPY_SDR_API int SoapySDRDevice_setGain	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const double	value
	)

Set the overall amplification in a chain. The gain will be distributed automatically across available element.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
value	the new amplification value in dB

Returns

an error code or 0 for success

SoapySDRDevice_setGainElement()

SOAPY_SDR_API int SoapySDRDevice_setGainElement	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const char *	name,
		const double	value
	)

Set the value of a amplification element in a chain.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
name	the name of an amplification element
value	the new amplification value in dB

Returns

an error code or 0 for success

SoapySDRDevice_setGainMode()

SOAPY_SDR_API int SoapySDRDevice_setGainMode	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const bool	automatic
	)

Set the automatic gain mode on the chain.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
automatic	true for automatic gain setting

Returns

an error code or 0 for success

SoapySDRDevice_setHardwareTime()

SOAPY_SDR_API int SoapySDRDevice_setHardwareTime	(	SoapySDRDevice *	device,
		const long long	timeNs,
		const char *	what
	)

Write the time to the hardware clock on the device. The what argument can refer to a specific time counter.

Parameters

device	a pointer to a device instance
timeNs	time in nanoseconds
what	optional argument

Returns

0 for success or error code on failure

SoapySDRDevice_setIQBalance()

SOAPY_SDR_API int SoapySDRDevice_setIQBalance	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const double	balanceI,
		const double	balanceQ
	)

Set the frontend IQ balance correction.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
balanceI	the relative correction (1.0 max)
balanceQ	the relative correction (1.0 max)

Returns

an error code or 0 for success

SoapySDRDevice_setIQBalanceMode()

SOAPY_SDR_API int SoapySDRDevice_setIQBalanceMode	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const bool	automatic
	)

Set the automatic frontend IQ balance correction.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
automatic	true for automatic correction

Returns

0 for success or error code on failure

SoapySDRDevice_setMasterClockRate()

SOAPY_SDR_API int SoapySDRDevice_setMasterClockRate	(	SoapySDRDevice *	device,
		const double	rate
	)

Set the master clock rate of the device.

Parameters

device	a pointer to a device instance
rate	the clock rate in Hz

Returns

an error code or 0 for success

SoapySDRDevice_setReferenceClockRate()

SOAPY_SDR_API int SoapySDRDevice_setReferenceClockRate	(	SoapySDRDevice *	device,
		const double	rate
	)

Set the reference clock rate of the device.

Parameters

device	a pointer to a device instance
rate	the clock rate in Hz

Returns

an error code or 0 for success

SoapySDRDevice_setSampleRate()

SOAPY_SDR_API int SoapySDRDevice_setSampleRate	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const double	rate
	)

Set the baseband sample rate of the chain.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
rate	the sample rate in samples per second

Returns

an error code or 0 for success

SoapySDRDevice_setTimeSource()

SOAPY_SDR_API int SoapySDRDevice_setTimeSource	(	SoapySDRDevice *	device,
		const char *	source
	)

Set the time source on the device

Parameters

device	a pointer to a device instance
source	the name of a time source

Returns

an error code or 0 for success

SoapySDRDevice_setupStream()

SOAPY_SDR_API SoapySDRStream* SoapySDRDevice_setupStream	(	SoapySDRDevice *	device,
		const int	direction,
		const char *	format,
		const size_t *	channels,
		const size_t	numChans,
		const SoapySDRKwargs *	args
	)

Initialize a stream given a list of channels and stream arguments. The implementation may change switches or power-up components. All stream API calls should be usable with the new stream object after setupStream() is complete, regardless of the activity state.

The API allows any number of simultaneous TX and RX streams, but many dual-channel devices are limited to one stream in each direction, using either one or both channels. This call will return an error if an unsupported combination is requested, or if a requested channel in this direction is already in use by another stream.

When multiple channels are added to a stream, they are typically expected to have the same sample rate. See SoapySDRDevice_setSampleRate().

Parameters

device

a pointer to a device instance

Returns

the opaque pointer to a stream handle.

The returned stream is not required to have internal locking, and may not be used concurrently from multiple threads.

Parameters

direction	the channel direction (SOAPY_SDR_RX or SOAPY_SDR_TX)
format	A string representing the desired buffer format in read/writeStream() The first character selects the number type: "C" means complex "F" means floating point "S" means signed integer "U" means unsigned integer The type character is followed by the number of bits per number (complex is 2x this size per sample) Example format strings: "CF32" - complex float32 (8 bytes per element) "CS16" - complex int16 (4 bytes per element) "CS12" - complex int12 (3 bytes per element) "CS4" - complex int4 (1 byte per element) "S32" - int32 (4 bytes per element) "U8" - uint8 (1 byte per element)
channels	a list of channels or empty for automatic
numChans	the number of elements in the channels array
args	stream args or empty for defaults Recommended keys to use in the args dictionary: "WIRE" - format of the samples between device and host

Returns

the stream pointer or nullptr for failure

SoapySDRDevice_transactSPI()

SOAPY_SDR_API unsigned SoapySDRDevice_transactSPI	(	SoapySDRDevice *	device,
		const int	addr,
		const unsigned	data,
		const size_t	numBits
	)

Perform a SPI transaction and return the result. Its up to the implementation to set the clock rate, and read edge, and the write edge of the SPI core. SPI slaves without a readback pin will return 0.

If the device contains multiple SPI masters, the address bits can encode which master.

Parameters

device	a pointer to a device instance
addr	an address of an available SPI slave
data	the SPI data, numBits-1 is first out
numBits	the number of bits to clock out

Returns

the readback data, numBits-1 is first in

SoapySDRDevice_unmake()

SOAPY_SDR_API int SoapySDRDevice_unmake

(

SoapySDRDevice *

device

)

Unmake or release a device object handle.

Parameters

device

a pointer to a device object

Returns

0 for success or error code on failure

SoapySDRDevice_unmake_list()

SOAPY_SDR_API int SoapySDRDevice_unmake_list	(	SoapySDRDevice **	devices,
		const size_t	length
	)

Unmake or release a list of device handles and free the devices array memory as well. This is a convenience call to parallelize device destruction, and is fundamentally a parallel for loop of unmake(Device *).

Parameters

devices	a list of pointers to device objects
length	the length of the devices array

Returns

0 for success or error code on failure

SoapySDRDevice_writeChannelSetting()

SOAPY_SDR_API int SoapySDRDevice_writeChannelSetting	(	SoapySDRDevice *	device,
		const int	direction,
		const size_t	channel,
		const char *	key,
		const char *	value
	)

Write an arbitrary channel setting on the device. The interpretation is up the implementation.

Parameters

device	a pointer to a device instance
direction	the channel direction RX or TX
channel	an available channel on the device
key	the setting identifier
value	the setting value

Returns

0 for success or error code on failure

SoapySDRDevice_writeGPIO()

SOAPY_SDR_API int SoapySDRDevice_writeGPIO	(	SoapySDRDevice *	device,
		const char *	bank,
		const unsigned	value
	)

Write the value of a GPIO bank.

Parameters

device	a pointer to a device instance
bank	the name of an available bank
value	an integer representing GPIO bits

Returns

0 for success or error code on failure

SoapySDRDevice_writeGPIODir()

SOAPY_SDR_API int SoapySDRDevice_writeGPIODir	(	SoapySDRDevice *	device,
		const char *	bank,
		const unsigned	dir
	)

Write the data direction of a GPIO bank. 1 bits represent outputs, 0 bits represent inputs.

Parameters

device	a pointer to a device instance
bank	the name of an available bank
dir	an integer representing data direction bits

Returns

0 for success or error code on failure

SoapySDRDevice_writeGPIODirMasked()

SOAPY_SDR_API int SoapySDRDevice_writeGPIODirMasked	(	SoapySDRDevice *	device,
		const char *	bank,
		const unsigned	dir,
		const unsigned	mask
	)

Write the data direction of a GPIO bank with modification mask. 1 bits represent outputs, 0 bits represent inputs.

Parameters

device	a pointer to a device instance
bank	the name of an available bank
dir	an integer representing data direction bits
mask	a modification mask where 1 = modify

Returns

0 for success or error code on failure

SoapySDRDevice_writeGPIOMasked()

SOAPY_SDR_API int SoapySDRDevice_writeGPIOMasked	(	SoapySDRDevice *	device,
		const char *	bank,
		const unsigned	value,
		const unsigned	mask
	)

Write the value of a GPIO bank with modification mask.

Parameters

device	a pointer to a device instance
bank	the name of an available bank
value	an integer representing GPIO bits
mask	a modification mask where 1 = modify

Returns

0 for success or error code on failure

SoapySDRDevice_writeI2C()

SOAPY_SDR_API int SoapySDRDevice_writeI2C	(	SoapySDRDevice *	device,
		const int	addr,
		const char *	data,
		const size_t	numBytes
	)

Write to an available I2C slave. If the device contains multiple I2C masters, the address bits can encode which master.

Parameters

device	a pointer to a device instance
addr	the address of the slave
data	an array of bytes write out
numBytes	the number of bytes to write

Returns

0 for success or error code on failure

SoapySDRDevice_writeRegister()

SOAPY_SDR_API int SoapySDRDevice_writeRegister	(	SoapySDRDevice *	device,
		const char *	name,
		const unsigned	addr,
		const unsigned	value
	)

Write a register on the device given the interface name. This can represent a register on a soft CPU, FPGA, IC; the interpretation is up the implementation to decide.

Parameters

device	a pointer to a device instance
name	the name of a available register interface
addr	the register address
value	the register value

Returns

0 for success or error code on failure

SoapySDRDevice_writeRegisters()

SOAPY_SDR_API int SoapySDRDevice_writeRegisters	(	SoapySDRDevice *	device,
		const char *	name,
		const unsigned	addr,
		const unsigned *	value,
		const size_t	length
	)

Write a memory block on the device given the interface name. This can represent a memory block on a soft CPU, FPGA, IC; the interpretation is up the implementation to decide.

Parameters

device	a pointer to a device instance
name	the name of a available memory block interface
addr	the memory block start address
value	the memory block content
length	the number of words in the block

Returns

0 for success or error code on failure

SoapySDRDevice_writeSetting()

SOAPY_SDR_API int SoapySDRDevice_writeSetting	(	SoapySDRDevice *	device,
		const char *	key,
		const char *	value
	)

Write an arbitrary setting on the device. The interpretation is up the implementation.

Parameters

device	a pointer to a device instance
key	the setting identifier
value	the setting value

Returns

0 for success or error code on failure

SoapySDRDevice_writeStream()

SOAPY_SDR_API int SoapySDRDevice_writeStream	(	SoapySDRDevice *	device,
		SoapySDRStream *	stream,
		const void *const *	buffs,
		const size_t	numElems,
		int *	flags,
		const long long	timeNs,
		const long	timeoutUs
	)

Write elements to a stream for transmission. This is a multi-channel call, and buffs should be an array of void *, where each pointer will be filled with data for a different channel.

Client code compatibility: Client code relies on writeStream() for proper back-pressure. The writeStream() implementation must enforce the timeout such that the call blocks until space becomes available or timeout expiration.

Parameters

	device	a pointer to a device instance
	stream	the opaque pointer to a stream handle
	buffs	an array of void* buffers num chans in size
	numElems	the number of elements in each buffer
[in,out]	flags	optional input flags and output flags
	timeNs	the buffer's timestamp in nanoseconds
	timeoutUs	the timeout in microseconds

Returns

the number of elements written per buffer or error

SoapySDRDevice_writeUART()

SOAPY_SDR_API int SoapySDRDevice_writeUART	(	SoapySDRDevice *	device,
		const char *	which,
		const char *	data
	)

Write data to a UART device. Its up to the implementation to set the baud rate, carriage return settings, flushing on newline.

Parameters

device	a pointer to a device instance
which	the name of an available UART
data	a null terminated array of bytes

Returns

0 for success or error code on failure