hts221_regs.h File Reference

Register definitions for ST HTS221 devices. More...

Detailed Description

Register definitions for ST HTS221 devices.

Author

Sebastian Meiling s@mln.nosp@m.g.ne.nosp@m.t

Definition in file hts221_regs.h.

#include "board.h"
#include "hts221.h"

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Macros
#define	HTS221_REGS_AVGT_SHIFT   (3U)
	Shift for AVG oftemperature configuration set in HTS221_REGS_AV_CONF. More...

Enumerations
enum	{ HTS221_REGS_CTRL_REG1_ODR_ONE_SHOT = 0, HTS221_REGS_CTRL_REG1_ODR_1HZ, HTS221_REGS_CTRL_REG1_ODR_7HZ, HTS221_REGS_CTRL_REG1_ODR_12HZ }
	Output data rate settings, HTS221_REGS_CTRL_REG1[1:0].
#define	HTS221_DEVICE_ID   (0xBC)

Register Map
#define	HTS221_REGS_WHO_AM_I   (0x0F)
#define	HTS221_REGS_AV_CONF   (0x10)
#define	HTS221_REGS_CTRL_REG1   (0x20)
#define	HTS221_REGS_CTRL_REG2   (0x21)
#define	HTS221_REGS_CTRL_REG3   (0x22)
	data ready output signal
#define	HTS221_REGS_STATUS_REG   (0x27)
#define	HTS221_REGS_HUMIDITY_OUT_L   (0x28)
#define	HTS221_REGS_HUMIDITY_OUT_H   (0x29)
#define	HTS221_REGS_TEMP_OUT_L   (0x2A)
#define	HTS221_REGS_TEMP_OUT_H   (0x2B)

Calibration Register Map
#define	HTS221_REGS_H0_RH_X2   (0x30)
#define	HTS221_REGS_H1_RH_X2   (0x31)
#define	HTS221_REGS_T0_DEGC_X8   (0x32)
#define	HTS221_REGS_T1_DEGC_X8   (0x33)
#define	HTS221_REGS_T1_T0_MSB   (0x35)
#define	HTS221_REGS_H0_T0_OUT_L   (0x36)
#define	HTS221_REGS_H0_T0_OUT_H   (0x37)
#define	HTS221_REGS_H1_T0_OUT_L   (0x3A)
#define	HTS221_REGS_H1_T0_OUT_H   (0x3B)
#define	HTS221_REGS_T0_OUT_L   (0x3C)
#define	HTS221_REGS_T0_OUT_H   (0x3D)
#define	HTS221_REGS_T1_OUT_L   (0x3E)
#define	HTS221_REGS_T1_OUT_H   (0x3F)

Humidity average over number of samples 4 to 512
enum	{   HTS221_REGS_AVGH_4 = 0, HTS221_REGS_AVGH_8, HTS221_REGS_AVGH_16, HTS221_REGS_AVGH_32,   HTS221_REGS_AVGH_64, HTS221_REGS_AVGH_128, HTS221_REGS_AVGH_256, HTS221_REGS_AVGH_512 }

Temperature average over number of samples 2 to 256
enum	{   HTS221_REGS_AVGT_2 = 0, HTS221_REGS_AVGT_4, HTS221_REGS_AVGT_8, HTS221_REGS_AVGT_16,   HTS221_REGS_AVGT_32, HTS221_REGS_AVGT_64, HTS221_REGS_AVGT_128, HTS221_REGS_AVGT_256 }

Config bits of HTS221_REGS_CTRL_REG1
#define	HTS221_REGS_CTRL_REG1_PD_ACTIVE   (1 << 7)
	power-down control, set active mode
#define	HTS221_REGS_CTRL_REG1_BDU   (1 << 2)
	Block data update.

Config bits of HTS221_REGS_CTRL_REG2
#define	HTS221_REGS_CTRL_REG2_BOOT   (1 << 7)
	Reboot memory content.
#define	HTS221_REGS_CTRL_REG2_HEATER   (1 << 1)
	Heater ON.
#define	HTS221_REGS_CTRL_REG2_OS_EN   (1 << 0)
	One-shot enable, start new dataset.

Data ready config bits of HTS221_REGS_CTRL_REG3
#define	HTS221_REGS_CTRL_REG3_DRDY_HL   (1 << 7)
	Data Ready output signal active high, low.
#define	HTS221_REGS_CTRL_REG3_PP_OD   (1 << 6)
	Push-pull / Open Drain selection on pin 3.
#define	HTS221_REGS_CTRL_REG3_DRDY_EN   (1 << 2)
	Data Ready enable.

Status bits to check data availability, HTS221_REGS_STATUS_REG[1:0]
#define	HTS221_REGS_STATUS_REG_TDA   (1 << 0)
	temperature data available
#define	HTS221_REGS_STATUS_REG_HDA   (1 << 1)
	humidity data available

Macro Definition Documentation

HTS221_REGS_AVGT_SHIFT

#define HTS221_REGS_AVGT_SHIFT   (3U)

Shift for AVG oftemperature configuration set in HTS221_REGS_AV_CONF.

Register HTS221_REGS_AV_CONF= [7:6] reserved, [5:3] AVGT2-0, [2:0] AVGH2-0

Definition at line 70 of file hts221_regs.h.