ads1015.txt

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    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     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/iio/adc/ads1015.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/iio/adc/ads1015.txt