Macros | Enumerations
hts221_regs.h File Reference
Drivers » Sensor Device Drivers | Drivers » [S]ensor [A]ctuator [U]ber [L]ayer » ST HTS221 digital Humidity Sensor

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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Go to the source code of this file.

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)
 

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
 

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
}
 

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 69 of file hts221_regs.h.