humid_sht_i2c.c File Reference

Sensirion SHT25 humidity/temperature sensor interface. More...

#include "modules/meteo/humid_sht_i2c.h"
#include "pprzlink/messages.h"
#include "modules/datalink/downlink.h"

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Macros
#define	SHT_I2C_DEV   i2c0
#define	SHT_SLAVE_ADDR   0x80
#define	SHT2_WRITE_USER   0xE6
#define	SHT2_READ_USER   0xE7
#define	SHT2_TRIGGER_TEMP   0xF3
#define	SHT2_TRIGGER_HUMID   0xF5
#define	SHT2_SOFT_RESET   0xFE

Functions
static void	humid_sht_thd (void *arg)
static void	sht_read_serial (struct sht_humid_t *sht)
static int	sht_read_temp (struct sht_humid_t *sht)
static int	sht_read_humid (struct sht_humid_t *sht)
static int8_t	humid_sht_crc (volatile uint8_t *data)
void	humid_sht_init_i2c (void)
void	humid_sht_periodic_i2c (void)

Variables
static struct sht_humid_t	sht

Detailed Description

Sensirion SHT25 humidity/temperature sensor interface.

Definition in file humid_sht_i2c.c.

Macro Definition Documentation

SHT2_READ_USER

#define SHT2_READ_USER   0xE7

Definition at line 41 of file humid_sht_i2c.c.

SHT2_SOFT_RESET

#define SHT2_SOFT_RESET   0xFE

Definition at line 44 of file humid_sht_i2c.c.

SHT2_TRIGGER_HUMID

#define SHT2_TRIGGER_HUMID   0xF5

Definition at line 43 of file humid_sht_i2c.c.

SHT2_TRIGGER_TEMP

#define SHT2_TRIGGER_TEMP   0xF3

Definition at line 42 of file humid_sht_i2c.c.

SHT2_WRITE_USER

#define SHT2_WRITE_USER   0xE6

Definition at line 40 of file humid_sht_i2c.c.

SHT_I2C_DEV

#define SHT_I2C_DEV   i2c0

Definition at line 35 of file humid_sht_i2c.c.

SHT_SLAVE_ADDR

#define SHT_SLAVE_ADDR   0x80

Definition at line 38 of file humid_sht_i2c.c.

Function Documentation

humid_sht_crc()

static int8_t humid_sht_crc ( volatile uint8_t *  data )

static

Definition at line 179 of file humid_sht_i2c.c.

References foo.

Referenced by sht_read_humid(), and sht_read_temp().

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humid_sht_init_i2c()

void humid_sht_init_i2c

(

void

)

Definition at line 57 of file humid_sht_i2c.c.

References sht_humid_t::bsem_sht_status, humid_sht_thd(), pprz_bsem_init(), PPRZ_NORMAL_PRIO, pprz_thread_create(), sht, SHT2_UNINIT, sht_humid_t::sht_status, and sht_humid_t::thd_handle.

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humid_sht_periodic_i2c()

void humid_sht_periodic_i2c

(

void

)

Definition at line 64 of file humid_sht_i2c.c.

References sht_humid_t::bsem_sht_status, DefaultChannel, DefaultDevice, sht_humid_t::fhumidsht_i2c, foo, sht_humid_t::ftempsht_i2c, sht_humid_t::humidsht_i2c, pprz_bsem_wait_timeout(), sht, SHT2_READING, sht_humid_t::sht_serial1, sht_humid_t::sht_serial2, sht_humid_t::sht_status, and sht_humid_t::tempsht_i2c.

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humid_sht_thd()

static void humid_sht_thd ( void *  arg )

static

Definition at line 77 of file humid_sht_i2c.c.

References sht_humid_t::bsem_sht_status, i2c_transaction::buf, i2c_blocking_transmit(), I2CTransSuccess, pprz_bsem_signal(), sht, SHT2_READING, SHT2_SOFT_RESET, SHT_I2C_DEV, sht_read_humid(), sht_read_serial(), sht_read_temp(), SHT_SLAVE_ADDR, sht_humid_t::sht_status, sht_humid_t::sht_trans, and sys_time_usleep().

Referenced by humid_sht_init_i2c().

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sht_read_humid()

static int sht_read_humid ( struct sht_humid_t *  sht )

static

Definition at line 158 of file humid_sht_i2c.c.

References i2c_transaction::buf, sht_humid_t::fhumidsht_i2c, humid_sht_crc(), sht_humid_t::humidsht_i2c, i2c_blocking_receive(), i2c_blocking_transmit(), I2CTransSuccess, sht, SHT2_TRIGGER_HUMID, SHT_I2C_DEV, SHT_SLAVE_ADDR, sht_humid_t::sht_trans, and sys_time_usleep().

Referenced by humid_sht_thd().

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sht_read_serial()

static void sht_read_serial ( struct sht_humid_t *  sht )

static

Definition at line 105 of file humid_sht_i2c.c.

References i2c_transaction::buf, foo, i2c_blocking_transceive(), I2CTransSuccess, sht, SHT_I2C_DEV, sht_humid_t::sht_serial1, sht_humid_t::sht_serial2, SHT_SLAVE_ADDR, sht_humid_t::sht_trans, and sys_time_usleep().

Referenced by humid_sht_thd().

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sht_read_temp()

static int sht_read_temp ( struct sht_humid_t *  sht )

static

Definition at line 136 of file humid_sht_i2c.c.

References i2c_transaction::buf, sht_humid_t::ftempsht_i2c, humid_sht_crc(), i2c_blocking_receive(), i2c_blocking_transmit(), I2CTransSuccess, sht, SHT2_TRIGGER_TEMP, SHT_I2C_DEV, SHT_SLAVE_ADDR, sht_humid_t::sht_trans, sys_time_usleep(), and sht_humid_t::tempsht_i2c.

Referenced by humid_sht_thd().

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Variable Documentation

sht

struct sht_humid_t sht

static

Definition at line 54 of file humid_sht_i2c.c.

Referenced by humid_sht_init_i2c(), humid_sht_periodic_i2c(), humid_sht_thd(), sht_read_humid(), sht_read_serial(), and sht_read_temp().