Based on kernel version 4.16.1. Page generated on 2018-04-09 11:52 EST.
1 ADS1015 (I2C) 2 3 This device is a 12-bit A-D converter with 4 inputs. 4 5 The inputs can be used single ended or in certain differential combinations. 6 7 For configuration all possible combinations are mapped to 8 channels: 8 0: Voltage over AIN0 and AIN1. 9 1: Voltage over AIN0 and AIN3. 10 2: Voltage over AIN1 and AIN3. 11 3: Voltage over AIN2 and AIN3. 12 4: Voltage over AIN0 and GND. 13 5: Voltage over AIN1 and GND. 14 6: Voltage over AIN2 and GND. 15 7: Voltage over AIN3 and GND. 16 17 Each channel can be configured individually: 18 - pga is the programmable gain amplifier (values are full scale) 19 0: +/- 6.144 V 20 1: +/- 4.096 V 21 2: +/- 2.048 V (default) 22 3: +/- 1.024 V 23 4: +/- 0.512 V 24 5: +/- 0.256 V 25 - data_rate in samples per second 26 0: 128 27 1: 250 28 2: 490 29 3: 920 30 4: 1600 (default) 31 5: 2400 32 6: 3300 33 34 1) The /ads1015 node 35 36 Required properties: 37 38 - compatible : must be "ti,ads1015" 39 - reg : I2C bus address of the device 40 - #address-cells : must be <1> 41 - #size-cells : must be <0> 42 43 The node contains child nodes for each channel that the platform uses. 44 45 Example ADS1015 node: 46 47 ads1015@49 { 48 compatible = "ti,ads1015"; 49 reg = <0x49>; 50 #address-cells = <1>; 51 #size-cells = <0>; 52 53 [ child node definitions... ] 54 } 55 56 2) channel nodes 57 58 Required properties: 59 60 - reg : the channel number 61 62 Optional properties: 63 64 - ti,gain : the programmable gain amplifier setting 65 - ti,datarate : the converter data rate 66 67 Example ADS1015 channel node: 68 69 channel@4 { 70 reg = <4>; 71 ti,gain = <3>; 72 ti,datarate = <5>; 73 };