File nut/dev/sht21.c

Included Files

#include <nut/include/compiler.h>

#include <nut/include/cfg/os.h>

#include <nut/include/sys/heap.h>

#include <nut/include/sys/timer.h>

#include <nut/include/sys/event.h>

#include <nut/include/dev/twif.h>

#include <nut/include/cfg/sht21.h>

#include <nut/include/dev/sht21.h>

Preprocessor definitions

#define SHT_READ_COUNT 3

#define POLYNOMIAL 0x131

#define T1x100 -4685L

#define T2x100 17572L

#define H1x100 -600L

#define H2x100 12500L

#define SHT_POLL_TOUT 90

#define SHT_POLL_CYCLE 5

#define SHT21_PRECISION SHT_RES_12_14

Global Variable sht_mutex

HANDLE sht_mutex

Visible in:		nut/dev/sht21.c
Used in:	ShtCommand()	nut/dev/sht21.c
	ShtInit()	nut/dev/sht21.c

Global Function ShtCommand()

int ShtCommand ( uint8_t cmd, uint16_t* data )

Prototyped in:	nut/include/dev/sht21.h
Calls:	NutTwiMasterRegRead()	nut/arch/m68k/coldfire/dev/common/mcf5_i2c.c
	NutTwiMasterTranceive()	nut/arch/m68k/coldfire/dev/common/mcf5_i2c.c
	ShtCrc()	nut/dev/sht21.c
	NutEventPost(), NutEventWait(), NutSleep()
Called by:	ShtInit()	nut/dev/sht21.c
	ShtRead()	nut/dev/sht21.c
References Variables:	sht_mutex	nut/dev/sht21.c

Global Function ShtCrc()

int ShtCrc ( uint8_t* Data, uint8_t Size )

Prototyped in:	nut/include/dev/sht21.h
Called by:	ShtCommand()	nut/dev/sht21.c

Global Function ShtInit()

int ShtInit ( void )

Prototyped in:	nut/include/dev/sht21.h
Calls:	ShtCommand()	nut/dev/sht21.c
	NutEventPost()
References Variables:	sht_mutex	nut/dev/sht21.c

Global Function ShtRead()

int ShtRead ( uint8_t cmd, int16_t* val )

Prototyped in:	nut/include/dev/sht21.h
Calls:	ShtCommand()	nut/dev/sht21.c