driver htu21d source file More...

#include "driver_htu21d.h"

Include dependency graph for driver_htu21d.c:

Macros
#define	CHIP_NAME "TE HTU21D"
	chip information definition
#define	MANUFACTURER_NAME "TE"
#define	SUPPLY_VOLTAGE_MIN 1.5f
#define	SUPPLY_VOLTAGE_MAX 3.6f
#define	MAX_CURRENT 0.5f
#define	TEMPERATURE_MIN -40.0f
#define	TEMPERATURE_MAX 125.0f
#define	DRIVER_VERSION 1000
#define	HTU21D_ADDRESS 0x80
	chip address definition
#define	HTU21D_COMMAND_TRIG_TEMP_HOLD_MASTER 0xE3
	chip command definition
#define	HTU21D_COMMAND_TRIG_HUMI_HOLD_MASTER 0xE5
#define	HTU21D_COMMAND_TRIG_TEMP_NO_HOLD_MASTER 0xF3
#define	HTU21D_COMMAND_TRIG_HUMI_NO_HOLD_MASTER 0xF5
#define	HTU21D_COMMAND_WRITE_USER_REGISTER 0xE6
#define	HTU21D_COMMAND_READ_USER_REGISTER 0xE7
#define	HTU21D_COMMAND_SOFT_RESET 0xFE

Functions
uint8_t	htu21d_set_mode (htu21d_handle_t *handle, htu21d_mode_t mode)
	set the chip mode
uint8_t	htu21d_get_mode (htu21d_handle_t handle, htu21d_mode_t mode)
	get the chip mode
uint8_t	htu21d_soft_reset (htu21d_handle_t *handle)
	soft reset
uint8_t	htu21d_read_temperature_humidity (htu21d_handle_t handle, uint16_t temperature_raw, float temperature_s, uint16_t humidity_raw, float *humidity_s)
	read the temperature and humidity data
uint8_t	htu21d_read_temperature (htu21d_handle_t handle, uint16_t temperature_raw, float *temperature_s)
	read the temperature data
uint8_t	htu21d_read_humidity (htu21d_handle_t handle, uint16_t humidity_raw, float *humidity_s)
	read the humidity data
uint8_t	htu21d_set_resolution (htu21d_handle_t *handle, htu21d_resolution_t resolution)
	set the resolution
uint8_t	htu21d_get_resolution (htu21d_handle_t handle, htu21d_resolution_t resolution)
	get the resolution
uint8_t	htu21d_get_battery_status (htu21d_handle_t handle, htu21d_status_t status)
	get the battery status
uint8_t	htu21d_set_heater (htu21d_handle_t *handle, htu21d_bool_t enable)
	enable or disable the heater
uint8_t	htu21d_get_heater (htu21d_handle_t handle, htu21d_bool_t enable)
	get the heater status
uint8_t	htu21d_set_disable_otp_reload (htu21d_handle_t *handle, htu21d_bool_t enable)
	enable or disable otp reload
uint8_t	htu21d_get_disable_otp_reload (htu21d_handle_t handle, htu21d_bool_t enable)
	get the disable otp reload status
uint8_t	htu21d_get_serial_number (htu21d_handle_t handle, uint64_t number)
	get the serial number
uint8_t	htu21d_init (htu21d_handle_t *handle)
	initialize the chip
uint8_t	htu21d_deinit (htu21d_handle_t *handle)
	close the chip
uint8_t	htu21d_set_reg (htu21d_handle_t handle, uint8_t buf, uint16_t len)
	set the chip register
uint8_t	htu21d_get_reg (htu21d_handle_t handle, uint8_t buf, uint16_t len)
	get the chip register
uint8_t	htu21d_info (htu21d_info_t *info)
	get chip's information

Detailed Description

driver htu21d source file

The MIT License (MIT)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Version: 1.0.0

Author: Shifeng Li

Date: 2022-10-31

history

Date	Version	Author	Description
2022/10/31	1.0	Shifeng Li	first upload

Definition in file driver_htu21d.c.

Macro Definition Documentation

◆ CHIP_NAME

#define CHIP_NAME "TE HTU21D"

chip information definition

chip name

Definition at line 42 of file driver_htu21d.c.

◆ DRIVER_VERSION

#define DRIVER_VERSION 1000

driver version

Definition at line 49 of file driver_htu21d.c.

◆ HTU21D_ADDRESS

#define HTU21D_ADDRESS 0x80

chip address definition

iic device address

Definition at line 54 of file driver_htu21d.c.

◆ HTU21D_COMMAND_READ_USER_REGISTER

#define HTU21D_COMMAND_READ_USER_REGISTER 0xE7

read user register command

Definition at line 64 of file driver_htu21d.c.

◆ HTU21D_COMMAND_SOFT_RESET

#define HTU21D_COMMAND_SOFT_RESET 0xFE

soft reset command

Definition at line 65 of file driver_htu21d.c.

◆ HTU21D_COMMAND_TRIG_HUMI_HOLD_MASTER

#define HTU21D_COMMAND_TRIG_HUMI_HOLD_MASTER 0xE5

trigger humidity measurement with hold master command

Definition at line 60 of file driver_htu21d.c.

◆ HTU21D_COMMAND_TRIG_HUMI_NO_HOLD_MASTER

#define HTU21D_COMMAND_TRIG_HUMI_NO_HOLD_MASTER 0xF5

trigger humidity measurement command

Definition at line 62 of file driver_htu21d.c.

◆ HTU21D_COMMAND_TRIG_TEMP_HOLD_MASTER

#define HTU21D_COMMAND_TRIG_TEMP_HOLD_MASTER 0xE3

chip command definition

trigger temperature measurement with hold master command

Definition at line 59 of file driver_htu21d.c.

◆ HTU21D_COMMAND_TRIG_TEMP_NO_HOLD_MASTER

#define HTU21D_COMMAND_TRIG_TEMP_NO_HOLD_MASTER 0xF3

trigger temperature measurement command

Definition at line 61 of file driver_htu21d.c.

◆ HTU21D_COMMAND_WRITE_USER_REGISTER

#define HTU21D_COMMAND_WRITE_USER_REGISTER 0xE6

write user register command

Definition at line 63 of file driver_htu21d.c.

◆ MANUFACTURER_NAME

#define MANUFACTURER_NAME "TE"

manufacturer name

Definition at line 43 of file driver_htu21d.c.

◆ MAX_CURRENT

#define MAX_CURRENT 0.5f

chip max current

Definition at line 46 of file driver_htu21d.c.

◆ SUPPLY_VOLTAGE_MAX

#define SUPPLY_VOLTAGE_MAX 3.6f

chip max supply voltage

Definition at line 45 of file driver_htu21d.c.

◆ SUPPLY_VOLTAGE_MIN

#define SUPPLY_VOLTAGE_MIN 1.5f

chip min supply voltage

Definition at line 44 of file driver_htu21d.c.

◆ TEMPERATURE_MAX

#define TEMPERATURE_MAX 125.0f

chip max operating temperature

Definition at line 48 of file driver_htu21d.c.

◆ TEMPERATURE_MIN

#define TEMPERATURE_MIN -40.0f

chip min operating temperature

Definition at line 47 of file driver_htu21d.c.

Macros

Functions