airspeed_ms45xx_i2c.h File Reference

Airspeed driver for the MS45xx via I2C. More...

#include "std.h"

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Data Structures
struct	AirspeedMs45xx

Functions
void	ms45xx_i2c_init (void)
void	ms45xx_i2c_periodic (void)
void	ms45xx_i2c_event (void)

Variables
struct AirspeedMs45xx	ms45xx

Detailed Description

Airspeed driver for the MS45xx via I2C.

Definition in file airspeed_ms45xx_i2c.h.

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Data Structure Documentation

struct AirspeedMs45xx

Definition at line 31 of file airspeed_ms45xx_i2c.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
float	diff_pressure	differential pressure in Pascal
float	pressure_offset	offset in Pascal
float	pressure_scale	scaling factor from raw measurement to Pascal
bool	sync_send	flag to enable sending every new measurement via telemetry
int16_t	temperature	temperature in 0.1 deg Celcius

Function Documentation

void ms45xx_i2c_event

(

void

)

Definition at line 175 of file airspeed_ms45xx_i2c.c.

References AirspeedMs45xx::airspeed, AirspeedMs45xx::airspeed_scale, i2c_transaction::buf, DefaultChannel, DefaultDevice, AirspeedMs45xx::diff_pressure, I2CTransDone, I2CTransFailed, I2CTransSuccess, Max, ms45xx, ms45xx_downlink(), MS45XX_SENDER_ID, ms45xx_trans, AirspeedMs45xx::pressure_offset, AirspeedMs45xx::pressure_scale, stateSetAirspeed_f(), i2c_transaction::status, AirspeedMs45xx::sync_send, AirspeedMs45xx::temperature, and update_butterworth_2_low_pass().

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void ms45xx_i2c_init

(

void

)

Definition at line 147 of file airspeed_ms45xx_i2c.c.

References AirspeedMs45xx::airspeed, AirspeedMs45xx::airspeed_scale, DefaultPeriodic, AirspeedMs45xx::diff_pressure, I2CTransDone, init_butterworth_2_low_pass(), ms45xx, MS45XX_AIRSPEED_SCALE, ms45xx_downlink(), MS45XX_LOWPASS_TAU, MS45XX_PRESSURE_OFFSET, MS45XX_PRESSURE_SCALE, MS45XX_SYNC_SEND, ms45xx_trans, AirspeedMs45xx::pressure_offset, AirspeedMs45xx::pressure_scale, register_periodic_telemetry(), i2c_transaction::status, AirspeedMs45xx::sync_send, and AirspeedMs45xx::temperature.

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void ms45xx_i2c_periodic

(

void

)

Definition at line 167 of file airspeed_ms45xx_i2c.c.

References i2c_receive(), I2CTransDone, MS45XX_I2C_ADDR, MS45XX_I2C_DEV, ms45xx_trans, and i2c_transaction::status.

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Variable Documentation

struct AirspeedMs45xx ms45xx

Definition at line 135 of file airspeed_ms45xx_i2c.c.

Referenced by ms45xx_downlink(), ms45xx_i2c_event(), and ms45xx_i2c_init().