tmphm_sht45.c File Reference

#include "tmphm_sht45.h"
#include "i2c.h"
#include "utils/mydefs.h"
#include "mymems.h"
#include <stdio.h>

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Functions
static HAL_StatusTypeDef	tempHum_onOff (I2C_HandleTypeDef *hi2c, uint8_t onOff)
int8_t	tmphm_sht45_Is (I2C_HandleTypeDef *hi2c, int8_t tryInit)
	check if tempHum sensor is present
HAL_StatusTypeDef	tmphm_sht45_IsOn (I2C_HandleTypeDef *hi2c, uint8_t *onOff)
	get state - sensor does not have on/off state - only for compatibility with others
HAL_StatusTypeDef	tmphm_sht45_On (I2C_HandleTypeDef *hi2c)
	Zapnutie sensora dummy.
HAL_StatusTypeDef	tmphm_sht45_Off (I2C_HandleTypeDef *hi2c)
	turn off sensor - dummy
HAL_StatusTypeDef	tmphm_sht45_Init (I2C_HandleTypeDef *hi2c)
	initialization, check if sensor is present or not. Checks main (0x44) and alternative address (0x45) If sensor is present, fnc tempHum_Is() returns 1
uint8_t	tempHum_CheckCrc (uint8_t *data, uint8_t len, uint8_t checksum)
HAL_StatusTypeDef	tmphm_sht45_Read (I2C_HandleTypeDef *hi2c)
	read temperature and humidity from sensor, values are in _tempHumData
void	tmphm_sht45_LogData (char *buf)
	log data to buffer

Variables
static uint16_t	_tempHumAddr = 0x44
static int8_t	_isTempHumSensor = 0
static int8_t	_isOnOff = 0
tmphm_sht45_t	_tmphm_sht45Data = { }
	Live measurement data from the SHT45 sensor; updated by tmphm_sht45_Read().
tmphm_sht45_t	_bck_tmphm_sht45Data = {}
	Snapshot copy of the last completed SHT45 measurement; used for LoRaWAN transmission.

Function Documentation

tempHum_CheckCrc()

uint8_t tempHum_CheckCrc	(	uint8_t *	data,
		uint8_t	len,
		uint8_t	checksum )

Definition at line 94 of file tmphm_sht45.c.

Referenced by tmphm_sht45_Read().

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tempHum_onOff()

HAL_StatusTypeDef tempHum_onOff ( I2C_HandleTypeDef * hi2c, uint8_t onOff )

static

Definition at line 30 of file tmphm_sht45.c.

References _isOnOff, _isTempHumSensor, _tempHumAddr, and I2C_IsDeviceReadyMT().

Referenced by tmphm_sht45_Off(), and tmphm_sht45_On().

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tmphm_sht45_Init()

HAL_StatusTypeDef tmphm_sht45_Init

(

I2C_HandleTypeDef *

hi2c

)

• initialization, check if sensor is present or not. Checks main (0x44) and alternative address (0x45) If sensor is present, fnc tempHum_Is() returns 1

Return values

-	HAL_OK - sensor was found, HAL_ERROR - sensor is not present

Definition at line 76 of file tmphm_sht45.c.

References _isTempHumSensor, _tempHumAddr, and I2C_IsDeviceReadyMT().

Referenced by tmphm_sht45_Is().

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tmphm_sht45_Is()

int8_t tmphm_sht45_Is	(	I2C_HandleTypeDef *	hi2c,
		int8_t	tryInit )

• check if tempHum sensor is present

Parameters

tryInit

- in case sensor is not yet initialized, 1 - attempt to initialize again, 0 - no

Return values

1	- is present, 0 - is not

Definition at line 40 of file tmphm_sht45.c.

References _isTempHumSensor, and tmphm_sht45_Init().

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tmphm_sht45_IsOn()

HAL_StatusTypeDef tmphm_sht45_IsOn	(	I2C_HandleTypeDef *	hi2c,
		uint8_t *	onOff )

get state - sensor does not have on/off state - only for compatibility with others

Definition at line 47 of file tmphm_sht45.c.

References _isOnOff, and _isTempHumSensor.

tmphm_sht45_LogData()

void tmphm_sht45_LogData

(

char *

buf

)

log data to buffer

Definition at line 166 of file tmphm_sht45.c.

References _tmphm_sht45Data, PRIf_02, and PRIf_02D.

tmphm_sht45_Off()

HAL_StatusTypeDef tmphm_sht45_Off

(

I2C_HandleTypeDef *

hi2c

)

turn off sensor - dummy

Definition at line 70 of file tmphm_sht45.c.

References tempHum_onOff().

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tmphm_sht45_On()

HAL_StatusTypeDef tmphm_sht45_On

(

I2C_HandleTypeDef *

hi2c

)

Zapnutie sensora dummy.

Definition at line 57 of file tmphm_sht45.c.

References _memsMainBlock, _tmphm_sht45Data, mems_WriteMainBlock(), and tempHum_onOff().

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tmphm_sht45_Read()

HAL_StatusTypeDef tmphm_sht45_Read

(

I2C_HandleTypeDef *

hi2c

)

• read temperature and humidity from sensor, values are in _tempHumData

Returns

- HAL_OK, HAL_ERROR, HAL_TIMEOUT - if sensor is off

Definition at line 110 of file tmphm_sht45.c.

References _isOnOff, _isTempHumSensor, _tempHumAddr, _tmphm_sht45Data, HAL_Delay(), and tempHum_CheckCrc().

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Variable Documentation

_bck_tmphm_sht45Data

tmphm_sht45_t _bck_tmphm_sht45Data = {}

Snapshot copy of the last completed SHT45 measurement; used for LoRaWAN transmission.

Definition at line 28 of file tmphm_sht45.c.

Referenced by sensors_CayennelFromBckData(), sensors_CopyToBck(), sensors_ReadToBckFromDataBlock(), and sensors_WriteFromBckToDataBlock().

_isOnOff

int8_t _isOnOff = 0

static

Definition at line 25 of file tmphm_sht45.c.

_isTempHumSensor

int8_t _isTempHumSensor = 0

static

Definition at line 24 of file tmphm_sht45.c.

Referenced by tempHum_onOff(), tmphm_sht45_Init(), tmphm_sht45_Is(), tmphm_sht45_IsOn(), and tmphm_sht45_Read().

_tempHumAddr

uint16_t _tempHumAddr = 0x44

static

Definition at line 23 of file tmphm_sht45.c.

Referenced by tempHum_onOff(), tmphm_sht45_Init(), and tmphm_sht45_Read().

_tmphm_sht45Data

tmphm_sht45_t _tmphm_sht45Data = { }

Live measurement data from the SHT45 sensor; updated by tmphm_sht45_Read().

Definition at line 27 of file tmphm_sht45.c.

Referenced by bar_bmp585_Read(), bar_ils22qs_Read(), sensors_CopyToBck(), tmphm_sht45_LogData(), tmphm_sht45_On(), and tmphm_sht45_Read().