1*4882a593SmuzhiyunKernel driver shtc1 2*4882a593Smuzhiyun=================== 3*4882a593Smuzhiyun 4*4882a593SmuzhiyunSupported chips: 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun * Sensirion SHTC1 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun Prefix: 'shtc1' 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun Addresses scanned: none 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun Datasheet: https://www.sensirion.com/file/datasheet_shtc1 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun * Sensirion SHTW1 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun Prefix: 'shtw1' 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun Addresses scanned: none 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun Datasheet: https://www.sensirion.com/file/datasheet_shtw1 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun * Sensirion SHTC3 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun Prefix: 'shtc3' 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun Addresses scanned: none 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun Datasheet: https://www.sensirion.com/file/datasheet_shtc3 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun 36*4882a593SmuzhiyunAuthor: 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun Johannes Winkelmann <johannes.winkelmann@sensirion.com> 39*4882a593Smuzhiyun 40*4882a593SmuzhiyunDescription 41*4882a593Smuzhiyun----------- 42*4882a593Smuzhiyun 43*4882a593SmuzhiyunThis driver implements support for the Sensirion SHTC1, SHTW1, and SHTC3 44*4882a593Smuzhiyunchips, a humidity and temperature sensor. Temperature is measured in degrees 45*4882a593Smuzhiyuncelsius, relative humidity is expressed as a percentage. 46*4882a593Smuzhiyun 47*4882a593SmuzhiyunThe device communicates with the I2C protocol. All sensors are set to I2C 48*4882a593Smuzhiyunaddress 0x70. See Documentation/i2c/instantiating-devices.rst for methods to 49*4882a593Smuzhiyuninstantiate the device. 50*4882a593Smuzhiyun 51*4882a593SmuzhiyunThere are two options configurable by means of shtc1_platform_data: 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun1. blocking (pull the I2C clock line down while performing the measurement) or 54*4882a593Smuzhiyun non-blocking mode. Blocking mode will guarantee the fastest result but 55*4882a593Smuzhiyun the I2C bus will be busy during that time. By default, non-blocking mode 56*4882a593Smuzhiyun is used. Make sure clock-stretching works properly on your device if you 57*4882a593Smuzhiyun want to use blocking mode. 58*4882a593Smuzhiyun2. high or low accuracy. High accuracy is used by default and using it is 59*4882a593Smuzhiyun strongly recommended. 60*4882a593Smuzhiyun 61*4882a593Smuzhiyunsysfs-Interface 62*4882a593Smuzhiyun--------------- 63*4882a593Smuzhiyun 64*4882a593Smuzhiyuntemp1_input 65*4882a593Smuzhiyun - temperature input 66*4882a593Smuzhiyunhumidity1_input 67*4882a593Smuzhiyun - humidity input 68