3
This device is a 12-bit A-D converter with 4 inputs.
5
The inputs can be used single ended or in certain differential combinations.
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.
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2: Voltage over AIN1 and AIN3.
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3: Voltage over AIN2 and AIN3.
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4: Voltage over AIN0 and GND.
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5: Voltage over AIN1 and GND.
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6: Voltage over AIN2 and GND.
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7: Voltage over AIN3 and GND.
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Each channel can be configured individually:
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- pga is the programmable gain amplifier (values are full scale)
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2: +/- 2.048 V (default)
25
- data_rate in samples per second
38
- compatible : must be "ti,ads1015"
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- reg : I2C bus address of the device
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- #address-cells : must be <1>
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- #size-cells : must be <0>
43
The node contains child nodes for each channel that the platform uses.
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compatible = "ti,ads1015";
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[ child node definitions... ]
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- reg : the channel number
64
- ti,gain : the programmable gain amplifier setting
65
- ti,datarate : the converter data rate
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Example ADS1015 channel node: