cs_de.h File Reference

#include <zephyr/bluetooth/conn.h>
#include <zephyr/net_buf.h>

Go to the source code of this file.

Data Structures
struct	cs_de_iq_tones_t
	Container of IQ values for local and remote measured tones. More...
struct	cs_de_dist_estimates_t
	Container of distance estimate results for a number of different methods, in meters. More...
struct	cs_de_report_t
	Output data for distance estimation. More...

Macros
#define	CS_DE_NUM_CHANNELS   (75)

Enumerations
enum	cs_de_tone_quality_t { CS_DE_TONE_QUALITY_OK , CS_DE_TONE_QUALITY_BAD }
enum	cs_de_quality_t { CS_DE_QUALITY_OK , CS_DE_QUALITY_DO_NOT_USE }
	Quality of the procedure. More...

Functions
void	cs_de_combined_iq_calculate (cs_de_iq_tones_t *cs_de_iq_tones, float iq_tones_comb[(75) *2])
	Combine the local and remote IQ values in a cs_de_iq_tones_t to one array. This is done through an element wise complex multiplication of the local and remote IQ values.
cs_de_quality_t	cs_de_calc (cs_de_report_t *p_report)
	Calculate distance estimates and quality for a given report This function assumes the report has been populated in all fields except the distance estimates and quality fields.
float	cs_de_ifft (float iq_tones_comb[2 *CONFIG_BT_CS_DE_NFFT_SIZE])
	Calculates a distance estimate based on the IFFT magnitude of the input IQ values. Note! After calling this function, the input IQ values in iq_tones_comb are overwritten with the IFFT magnitude.
float	cs_de_rtt (int32_t rtt_accumulated_half_ns, uint8_t rtt_count)
	Calculate a distance estimate based on the accumulated RTT To do this, average time of flight is calculated and multiplied with the speed of light.
float	cs_de_phase_slope (float iq_tones_comb[(75) *2])
	Calculate distance estimate based on the phase slope of the input IQ values.