€•T/Œsphinx.addnodes”Œdocument”“”)”}”(Œ rawsource”Œ”Œchildren”]”(Œ translations”Œ LanguagesNode”“”)”}”(hhh]”(hŒ pending_xref”“”)”}”(hhh]”Œdocutils.nodes”ŒText”“”ŒChinese (Simplified)”…””}”Œparent”hsbaŒ attributes”}”(Œids”]”Œclasses”]”Œnames”]”Œdupnames”]”Œbackrefs”]”Œ refdomain”Œstd”Œreftype”Œdoc”Œ reftarget”Œ/translations/zh_CN/hwmon/sht21”Œmodname”NŒ classname”NŒ refexplicit”ˆuŒtagname”hhh ubh)”}”(hhh]”hŒChinese (Traditional)”…””}”hh2sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ/translations/zh_TW/hwmon/sht21”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒItalian”…””}”hhFsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ/translations/it_IT/hwmon/sht21”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒJapanese”…””}”hhZsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ/translations/ja_JP/hwmon/sht21”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒKorean”…””}”hhnsbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ/translations/ko_KR/hwmon/sht21”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubh)”}”(hhh]”hŒSpanish”…””}”hh‚sbah}”(h]”h ]”h"]”h$]”h&]”Œ refdomain”h)Œreftype”h+Œ reftarget”Œ/translations/sp_SP/hwmon/sht21”Œmodname”NŒ classname”NŒ refexplicit”ˆuh1hhh ubeh}”(h]”h ]”h"]”h$]”h&]”Œcurrent_language”ŒEnglish”uh1h hhŒ _document”hŒsource”NŒline”NubhŒsection”“”)”}”(hhh]”(hŒtitle”“”)”}”(hŒKernel driver sht21”h]”hŒKernel driver sht21”…””}”(hh¨hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hh£hžhhŸŒ9/var/lib/git/docbuild/linux/Documentation/hwmon/sht21.rst”h KubhŒ paragraph”“”)”}”(hŒSupported chips:”h]”hŒSupported chips:”…””}”(hh¹hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubhŒ block_quote”“”)”}”(hX]* Sensirion SHT21 Prefix: 'sht21' Addresses scanned: none Datasheet: Publicly available at the Sensirion website https://www.sensirion.com/file/datasheet_sht21 * Sensirion SHT25 Prefix: 'sht25' Addresses scanned: none Datasheet: Publicly available at the Sensirion website https://www.sensirion.com/file/datasheet_sht25 ”h]”hŒ bullet_list”“”)”}”(hhh]”(hŒ list_item”“”)”}”(hŒ¤Sensirion SHT21 Prefix: 'sht21' Addresses scanned: none Datasheet: Publicly available at the Sensirion website https://www.sensirion.com/file/datasheet_sht21 ”h]”(h¸)”}”(hŒSensirion SHT21”h]”hŒSensirion SHT21”…””}”(hhØhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KhhÔubh¸)”}”(hŒPrefix: 'sht21'”h]”hŒPrefix: ‘sht21’”…””}”(hhæhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KhhÔubh¸)”}”(hŒAddresses scanned: none”h]”hŒAddresses scanned: none”…””}”(hhôhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K hhÔubh¸)”}”(hŒ6Datasheet: Publicly available at the Sensirion website”h]”hŒ6Datasheet: Publicly available at the Sensirion website”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K hhÔubh¸)”}”(hŒ.https://www.sensirion.com/file/datasheet_sht21”h]”hŒ reference”“”)”}”(hjh]”hŒ.https://www.sensirion.com/file/datasheet_sht21”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”juh1jhjubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KhhÔubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÒhhÏubhÓ)”}”(hŒ¤Sensirion SHT25 Prefix: 'sht25' Addresses scanned: none Datasheet: Publicly available at the Sensirion website https://www.sensirion.com/file/datasheet_sht25 ”h]”(h¸)”}”(hŒSensirion SHT25”h]”hŒSensirion SHT25”…””}”(hj4hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khj0ubh¸)”}”(hŒPrefix: 'sht25'”h]”hŒPrefix: ‘sht25’”…””}”(hjBhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khj0ubh¸)”}”(hŒAddresses scanned: none”h]”hŒAddresses scanned: none”…””}”(hjPhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khj0ubh¸)”}”(hŒ6Datasheet: Publicly available at the Sensirion website”h]”hŒ6Datasheet: Publicly available at the Sensirion website”…””}”(hj^hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khj0ubh¸)”}”(hŒ.https://www.sensirion.com/file/datasheet_sht25”h]”j)”}”(hjnh]”hŒ.https://www.sensirion.com/file/datasheet_sht25”…””}”(hjphžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”jnuh1jhjlubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khj0ubeh}”(h]”h ]”h"]”h$]”h&]”uh1hÒhhÏubeh}”(h]”h ]”h"]”h$]”h&]”Œbullet”Œ*”uh1hÍhŸh¶h KhhÉubah}”(h]”h ]”h"]”h$]”h&]”uh1hÇhŸh¶h Khh£hžhubh¸)”}”(hŒAuthor:”h]”hŒAuthor:”…””}”(hj˜hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h Khh£hžhubhÈ)”}”(hŒ(Urs Fleisch ”h]”h¸)”}”(hŒ'Urs Fleisch ”h]”(hŒ Urs Fleisch <”…””}”(hjªhžhhŸNh Nubj)”}”(hŒurs.fleisch@sensirion.com”h]”hŒurs.fleisch@sensirion.com”…””}”(hj²hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”Œrefuri”Œ mailto:urs.fleisch@sensirion.com”uh1jhjªubhŒ>”…””}”(hjªhžhhŸNh Nubeh}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K hj¦ubah}”(h]”h ]”h"]”h$]”h&]”uh1hÇhŸh¶h K hh£hžhubh¢)”}”(hhh]”(h§)”}”(hŒ Description”h]”hŒ Description”…””}”(hjÕhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hjÒhžhhŸh¶h K#ubh¸)”}”(hX?The SHT21 and SHT25 are humidity and temperature sensors in a DFN package of only 3 x 3 mm footprint and 1.1 mm height. The difference between the two devices is the higher level of precision of the SHT25 (1.8% relative humidity, 0.2 degree Celsius) compared with the SHT21 (2.0% relative humidity, 0.3 degree Celsius).”h]”hX?The SHT21 and SHT25 are humidity and temperature sensors in a DFN package of only 3 x 3 mm footprint and 1.1 mm height. The difference between the two devices is the higher level of precision of the SHT25 (1.8% relative humidity, 0.2 degree Celsius) compared with the SHT21 (2.0% relative humidity, 0.3 degree Celsius).”…””}”(hjãhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K%hjÒhžhubh¸)”}”(hŒ´The devices communicate with the I2C protocol. All sensors are set to the same I2C address 0x40, so an entry with I2C_BOARD_INFO("sht21", 0x40) can be used in the board setup code.”h]”hŒ¸The devices communicate with the I2C protocol. All sensors are set to the same I2C address 0x40, so an entry with I2C_BOARD_INFO(“sht21â€, 0x40) can be used in the board setup code.”…””}”(hjñhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K+hjÒhžhubeh}”(h]”Œ description”ah ]”h"]”Œ description”ah$]”h&]”uh1h¡hh£hžhhŸh¶h K#ubh¢)”}”(hhh]”(h§)”}”(hŒsysfs-Interface”h]”hŒsysfs-Interface”…””}”(hj hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hjhžhhŸh¶h K0ubhŒdefinition_list”“”)”}”(hhh]”(hŒdefinition_list_item”“”)”}”(hŒ temp1_input - temperature input ”h]”(hŒterm”“”)”}”(hŒ temp1_input”h]”hŒ temp1_input”…””}”(hj%hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j#hŸh¶h K3hjubhŒ definition”“”)”}”(hhh]”hÎ)”}”(hhh]”hÓ)”}”(hŒtemperature input ”h]”h¸)”}”(hŒtemperature input”h]”hŒtemperature input”…””}”(hj?hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K3hj;ubah}”(h]”h ]”h"]”h$]”h&]”uh1hÒhj8ubah}”(h]”h ]”h"]”h$]”h&]”jŒ-”uh1hÍhŸh¶h K3hj5ubah}”(h]”h ]”h"]”h$]”h&]”uh1j3hjubeh}”(h]”h ]”h"]”h$]”h&]”uh1jhŸh¶h K3hjubj)”}”(hŒ humidity1_input - humidity input”h]”(j$)”}”(hŒhumidity1_input”h]”hŒhumidity1_input”…””}”(hjjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j#hŸh¶h K5hjfubj4)”}”(hhh]”hÎ)”}”(hhh]”hÓ)”}”(hŒhumidity input”h]”h¸)”}”(hj€h]”hŒhumidity input”…””}”(hj‚hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K6hj~ubah}”(h]”h ]”h"]”h$]”h&]”uh1hÒhj{ubah}”(h]”h ]”h"]”h$]”h&]”jjYuh1hÍhŸh¶h K6hjxubah}”(h]”h ]”h"]”h$]”h&]”uh1j3hjfubeh}”(h]”h ]”h"]”h$]”h&]”uh1jhŸh¶h K5hjhžhubj)”}”(hŒ%eic - Electronic Identification Code ”h]”(j$)”}”(hŒeic”h]”hŒeic”…””}”(hj«hžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1j#hŸh¶h K8hj§ubj4)”}”(hhh]”hÎ)”}”(hhh]”hÓ)”}”(hŒElectronic Identification Code ”h]”h¸)”}”(hŒElectronic Identification Code”h]”hŒElectronic Identification Code”…””}”(hjÃhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K8hj¿ubah}”(h]”h ]”h"]”h$]”h&]”uh1hÒhj¼ubah}”(h]”h ]”h"]”h$]”h&]”jjYuh1hÍhŸh¶h K8hj¹ubah}”(h]”h ]”h"]”h$]”h&]”uh1j3hj§ubeh}”(h]”h ]”h"]”h$]”h&]”uh1jhŸh¶h K8hjhžhubeh}”(h]”h ]”h"]”h$]”h&]”uh1jhjhžhhŸNh Nubeh}”(h]”Œsysfs-interface”ah ]”h"]”Œsysfs-interface”ah$]”h&]”uh1h¡hh£hžhhŸh¶h K0ubh¢)”}”(hhh]”(h§)”}”(hŒNotes”h]”hŒNotes”…””}”(hjúhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h¦hj÷hžhhŸh¶h K;ubh¸)”}”(hXnThe driver uses the default resolution settings of 12 bit for humidity and 14 bit for temperature, which results in typical measurement times of 22 ms for humidity and 66 ms for temperature. To keep self heating below 0.1 degree Celsius, the device should not be active for more than 10% of the time, e.g. maximum two measurements per second at the given resolution.”h]”hXnThe driver uses the default resolution settings of 12 bit for humidity and 14 bit for temperature, which results in typical measurement times of 22 ms for humidity and 66 ms for temperature. To keep self heating below 0.1 degree Celsius, the device should not be active for more than 10% of the time, e.g. maximum two measurements per second at the given resolution.”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h K=hj÷hžhubh¸)”}”(hŒ\Different resolutions, the on-chip heater, and using the CRC checksum are not supported yet.”h]”hŒ\Different resolutions, the on-chip heater, and using the CRC checksum are not supported yet.”…””}”(hjhžhhŸNh Nubah}”(h]”h ]”h"]”h$]”h&]”uh1h·hŸh¶h KChj÷hžhubeh}”(h]”Œnotes”ah ]”h"]”Œnotes”ah$]”h&]”uh1h¡hh£hžhhŸh¶h K;ubeh}”(h]”Œkernel-driver-sht21”ah ]”h"]”Œkernel driver sht21”ah$]”h&]”uh1h¡hhhžhhŸh¶h Kubeh}”(h]”h ]”h"]”h$]”h&]”Œsource”h¶uh1hŒcurrent_source”NŒ current_line”NŒsettings”Œdocutils.frontend”ŒValues”“”)”}”(h¦NŒ generator”NŒ datestamp”NŒ source_link”NŒ source_url”NŒ toc_backlinks”Œentry”Œfootnote_backlinks”KŒ sectnum_xform”KŒstrip_comments”NŒstrip_elements_with_classes”NŒ strip_classes”NŒ report_level”KŒ halt_level”KŒexit_status_level”KŒdebug”NŒwarning_stream”NŒ traceback”ˆŒinput_encoding”Œ utf-8-sig”Œinput_encoding_error_handler”Œstrict”Œoutput_encoding”Œutf-8”Œoutput_encoding_error_handler”jWŒerror_encoding”Œutf-8”Œerror_encoding_error_handler”Œbackslashreplace”Œ language_code”Œen”Œrecord_dependencies”NŒconfig”NŒ id_prefix”hŒauto_id_prefix”Œid”Œ dump_settings”NŒdump_internals”NŒdump_transforms”NŒdump_pseudo_xml”NŒexpose_internals”NŒstrict_visitor”NŒ_disable_config”NŒ_source”h¶Œ _destination”NŒ _config_files”]”Œ7/var/lib/git/docbuild/linux/Documentation/docutils.conf”aŒfile_insertion_enabled”ˆŒ raw_enabled”KŒline_length_limit”M'Œpep_references”NŒ pep_base_url”Œhttps://peps.python.org/”Œpep_file_url_template”Œpep-%04d”Œrfc_references”NŒ rfc_base_url”Œ&https://datatracker.ietf.org/doc/html/”Œ tab_width”KŒtrim_footnote_reference_space”‰Œsyntax_highlight”Œlong”Œ smart_quotes”ˆŒsmartquotes_locales”]”Œcharacter_level_inline_markup”‰Œdoctitle_xform”‰Œ docinfo_xform”KŒsectsubtitle_xform”‰Œ image_loading”Œlink”Œembed_stylesheet”‰Œcloak_email_addresses”ˆŒsection_self_link”‰Œenv”NubŒreporter”NŒindirect_targets”]”Œsubstitution_defs”}”Œsubstitution_names”}”Œrefnames”}”Œrefids”}”Œnameids”}”(j1j.jjjôjñj)j&uŒ nametypes”}”(j1‰j‰jô‰j)‰uh}”(j.h£jjÒjñjj&j÷uŒ footnote_refs”}”Œ citation_refs”}”Œ autofootnotes”]”Œautofootnote_refs”]”Œsymbol_footnotes”]”Œsymbol_footnote_refs”]”Œ footnotes”]”Œ citations”]”Œautofootnote_start”KŒsymbol_footnote_start”KŒ id_counter”Œ collections”ŒCounter”“”}”…”R”Œparse_messages”]”Œtransform_messages”]”Œ transformer”NŒ include_log”]”Œ decoration”Nhžhub.