airspeed_sdp3x.h File Reference

Airspeed driver for the SDP3X pressure sensor via I2C. More...

#include "std.h"

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Data Structures
struct	AirspeedSdp3x

Functions
void	sdp3x_init (void)
void	sdp3x_periodic (void)
void	sdp3x_event (void)

Variables
struct AirspeedSdp3x	sdp3x

Detailed Description

Airspeed driver for the SDP3X pressure sensor via I2C.

Definition in file airspeed_sdp3x.h.

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Data Structure Documentation

AirspeedSdp3x

struct AirspeedSdp3x

Definition at line 30 of file airspeed_sdp3x.h.

Data Fields
float	airspeed	Airspeed in m/s estimated from (differential) pressure.
float	airspeed_scale	Quadratic scale factor to convert (differential) pressure to airspeed.
bool	autoset_offset	Set offset value from current filtered value.
bool	initialized	init flag
float	pressure	(differential) pressure in Pascal
float	pressure_offset	Offset in Pascal.
float	pressure_scale	Scaling factor from raw measurement to Pascal.
uint16_t	raw_p	raw value from chip
bool	sync_send	Flag to enable sending every new measurement via telemetry for debugging purpose.
float	temperature	Temperature in deg Celcius.

Function Documentation

sdp3x_event()

void sdp3x_event

(

void

)

Definition at line 201 of file airspeed_sdp3x.c.

References AirspeedSdp3x::airspeed, AirspeedSdp3x::airspeed_scale, AIRSPEED_SDP3X_ID, AUTOSET_NB_MAX, AirspeedSdp3x::autoset_offset, i2c_transaction::buf, DefaultChannel, DefaultDevice, I2CTransDone, I2CTransFailed, I2CTransSuccess, AirspeedSdp3x::initialized, AirspeedSdp3x::pressure, AirspeedSdp3x::pressure_offset, AirspeedSdp3x::pressure_scale, AirspeedSdp3x::raw_p, sdp3x, sdp3x_crc(), sdp3x_downlink(), sdp3x_filter, SDP3X_SCALE_TEMPERATURE, SDP3X_SENDER_ID, sdp3x_trans, i2c_transaction::status, AirspeedSdp3x::sync_send, AirspeedSdp3x::temperature, and update_butterworth_2_low_pass().

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sdp3x_init()

void sdp3x_init

(

void

)

Definition at line 156 of file airspeed_sdp3x.c.

References AirspeedSdp3x::airspeed, AirspeedSdp3x::airspeed_scale, AirspeedSdp3x::autoset_offset, DefaultPeriodic, I2CTransDone, init_butterworth_2_low_pass(), AirspeedSdp3x::initialized, AirspeedSdp3x::pressure, AirspeedSdp3x::pressure_offset, AirspeedSdp3x::pressure_scale, register_periodic_telemetry(), sdp3x, SDP3X_AIRSPEED_SCALE, sdp3x_downlink(), sdp3x_filter, SDP3X_LOWPASS_TAU, SDP3X_PRESSURE_OFFSET, SDP3X_PRESSURE_SCALE, SDP3X_SYNC_SEND, sdp3x_trans, i2c_transaction::status, AirspeedSdp3x::sync_send, and AirspeedSdp3x::temperature.

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sdp3x_periodic()

void sdp3x_periodic

(

void

)

Definition at line 180 of file airspeed_sdp3x.c.

References i2c_transaction::buf, i2c_receive(), i2c_transmit(), I2CTransDone, AirspeedSdp3x::initialized, sdp3x, SDP3X_I2C_ADDR, SDP3X_MODE, sdp3x_trans, and i2c_transaction::status.

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Variable Documentation

sdp3x

struct AirspeedSdp3x sdp3x

extern

Definition at line 1 of file airspeed_sdp3x.c.

Referenced by sdp3x_downlink(), sdp3x_event(), sdp3x_init(), and sdp3x_periodic().