AOA

This module implements the Angle of Arrival (AOA) More...

Modules
	AOA Structures

Files
file	AOA.h
	AOA interface.

Macros
#define	ANT1   (28)
#define	ANT2   (29)
#define	ANT3   (30)
#define	ANT_ARRAY   (27)
#define	AOA_PIN(x)   (1 << (x&0xff))
	Relevant only for RTLS Passive.
#define	AOA_RES_MAX_CTE_TIME   20
	CTE Time at maximum resolution.
#define	AOA_RES_MAX_SIZE   512
	Relevent only for RTLS Passive. More...

Enumerations
enum	AoA_IQSampleState_t { SAMPLES_NOT_READY, SAMPLES_NOT_VALID, SAMPLES_READY }
	IQ Sample state - relevant for Passive.

Functions
uint16_t	AOA_calcNumOfCteSamples (uint8_t cteTime, uint8_t cteScanOvs, uint8_t cteOffset)
	This function calculate the number of IQ samples based on the cte parameters from the CTEInfo header and our patch params. More...
void	AOA_cteCapEnable (uint8_t cteTime, uint8_t cteScanOvs, uint8_t cteOffset)
	This function enables the CTE capture in the rf core. More...
uint8_t	AOA_getActiveAnt (void)
	Returns active antenna id. More...
AoA_IQSampleState_t	AOA_getSampleState (void)
	Returns active antenna id. More...
void	AOA_init (uint8_t startAntenna)
	Initialize AoA for the defined role. More...
void	AOA_postProcess (int8_t rssi, uint8_t channel, AoA_IQSample_Ext_t *samplesBuff)
	This function will update the final result report with rssi and channel For RTLS Passive it will also send a command to enable RF RAM so we can read the samples that we captured (if any) More...

Detailed Description

This module implements the Angle of Arrival (AOA)

Macro Definition Documentation

AOA_RES_MAX_SIZE

#define AOA_RES_MAX_SIZE   512

Relevent only for RTLS Passive.

Data Size at maximum resolution

Function Documentation

AOA_calcNumOfCteSamples()

uint16_t AOA_calcNumOfCteSamples	(	uint8_t	cteTime,
		uint8_t	cteScanOvs,
		uint8_t	cteOffset
	)

This function calculate the number of IQ samples based on the cte parameters from the CTEInfo header and our patch params.

Parameters

cteTime	- CTEInfo parameter defined in spec
cteScanOvs	- used to enable CTE capturing and set the sampling rate in the IQ buffer
cteOffset	- number of microseconds from the beginning of the tone until the sampling starts

Returns

uint16_t - The number of IQ samples to process

AOA_cteCapEnable()

void AOA_cteCapEnable	(	uint8_t	cteTime,
		uint8_t	cteScanOvs,
		uint8_t	cteOffset
	)

This function enables the CTE capture in the rf core.

Parameters

cteTime	- CTETime parameter defined in spec
cteScanOvs	- used to enable CTE capturing and set the sampling rate in the IQ buffer
cteOffset	- number of microseconds from the beginning of the tone until the sampling starts

Returns

None

AOA_getActiveAnt()

uint8_t AOA_getActiveAnt

(

void

)

Returns active antenna id.

Returns

Pointer to raw I/Q samples

AOA_getSampleState()

AoA_IQSampleState_t AOA_getSampleState

(

void

)

Returns active antenna id.

Returns

Pointer to Sample State

AOA_init()

void AOA_init

(

uint8_t

startAntenna

)

Initialize AoA for the defined role.

Parameters

startAntenna

- start samples with antenna 1 or 2

Returns

none

AOA_postProcess()

void AOA_postProcess	(	int8_t	rssi,
		uint8_t	channel,
		AoA_IQSample_Ext_t *	samplesBuff
	)

This function will update the final result report with rssi and channel For RTLS Passive it will also send a command to enable RF RAM so we can read the samples that we captured (if any)

Parameters

rssi	- rssi to be stamped on final result
channel	- channel to be stamped on final result
samplesBuff	- buffer to copy samples to