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45 lines
1.3 KiB
45 lines
1.3 KiB
.. SPDX-License-Identifier: GPL-2.0-or-later |
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Kernel driver max127 |
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==================== |
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Author: |
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* Tao Ren <[email protected]> |
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Supported chips: |
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* Maxim MAX127 |
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Prefix: 'max127' |
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Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX127-MAX128.pdf |
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Description |
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----------- |
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The MAX127 is a multirange, 12-bit data acquisition system (DAS) providing |
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8 analog input channels that are independently software programmable for |
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a variety of ranges. The available ranges are {0,5V}, {0,10V}, {-5,5V} |
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and {-10,10V}. |
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The MAX127 features a 2-wire, I2C-compatible serial interface that allows |
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communication among multiple devices using SDA and SCL lines. |
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Sysfs interface |
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--------------- |
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============== ============================================================== |
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in[0-7]_input The input voltage (in mV) of the corresponding channel. |
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RO |
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in[0-7]_min The lower input limit (in mV) for the corresponding channel. |
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ADC range and LSB will be updated when the limit is changed. |
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For the MAX127, it will be adjusted to -10000, -5000, or 0. |
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RW |
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in[0-7]_max The higher input limit (in mV) for the corresponding channel. |
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ADC range and LSB will be updated when the limit is changed. |
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For the MAX127, it will be adjusted to 0, 5000, or 10000. |
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RW |
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============== ==============================================================
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