1 Kernel driver sht15
2 ===================
3
4 Authors:
5
6 * Wouter Horre
7 * Jonathan Cameron
8 * Vivien Didelot <vivien.didelot@savoirfairel
9 * Jerome Oufella <jerome.oufella@savoirfairel
10
11 Supported chips:
12
13 * Sensirion SHT10
14
15 Prefix: 'sht10'
16
17 * Sensirion SHT11
18
19 Prefix: 'sht11'
20
21 * Sensirion SHT15
22
23 Prefix: 'sht15'
24
25 * Sensirion SHT71
26
27 Prefix: 'sht71'
28
29 * Sensirion SHT75
30
31 Prefix: 'sht75'
32
33 Datasheet: Publicly available at the Sensirion
34
35 http://www.sensirion.ch/en/pdf/product
36
37 Description
38 -----------
39
40 The SHT10, SHT11, SHT15, SHT71, and SHT75 are
41 sensors.
42
43 The devices communicate using two GPIO lines.
44
45 Supported resolutions for the measurements are
46 bits for humidity, or 12 bits for temperature
47
48 The humidity calibration coefficients are prog
49 chip. These coefficients are used to internall
50 sensors. Disabling the reload of those coeffic
51 measurement and decrease power consumption, wh
52
53 Some options may be set via sysfs attributes.
54
55 Notes:
56 * The regulator supply name is set to "vcc".
57 * If a CRC validation fails, a soft reset co
58 status register to its hardware default va
59 restore the previous device configuration.
60
61 Platform data
62 -------------
63
64 * checksum:
65 set it to true to enable CRC validation of t
66 * no_otp_reload:
67 flag to indicate not to reload from OTP (def
68 * low_resolution:
69 flag to indicate the temp/humidity resolutio
70
71 Sysfs interface
72 ---------------
73
74 ================== ===========================
75 temp1_input temperature input
76 humidity1_input humidity input
77 heater_enable write 1 in this attribute t
78 0 to disable it. Be careful
79 for too long.
80 temp1_fault if 1, this means that the v
81 measurement may be invalid.
82 humidity1_fault same as temp1_fault.
83 ================== ===========================
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