0001 .. SPDX-License-Identifier: GPL-2.0-or-later
0002
0003 Kernel driver max127
0004 ====================
0005
0006 Author:
0007
0008 * Tao Ren <rentao.bupt@gmail.com>
0009
0010 Supported chips:
0011
0012 * Maxim MAX127
0013
0014 Prefix: 'max127'
0015
0016 Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX127-MAX128.pdf
0017
0018 Description
0019 -----------
0020
0021 The MAX127 is a multirange, 12-bit data acquisition system (DAS) providing
0022 8 analog input channels that are independently software programmable for
0023 a variety of ranges. The available ranges are {0,5V}, {0,10V}, {-5,5V}
0024 and {-10,10V}.
0025
0026 The MAX127 features a 2-wire, I2C-compatible serial interface that allows
0027 communication among multiple devices using SDA and SCL lines.
0028
0029 Sysfs interface
0030 ---------------
0031
0032 ============== ==============================================================
0033 in[0-7]_input The input voltage (in mV) of the corresponding channel.
0034 RO
0035
0036 in[0-7]_min The lower input limit (in mV) for the corresponding channel.
0037 ADC range and LSB will be updated when the limit is changed.
0038 For the MAX127, it will be adjusted to -10000, -5000, or 0.
0039 RW
0040
0041 in[0-7]_max The higher input limit (in mV) for the corresponding channel.
0042 ADC range and LSB will be updated when the limit is changed.
0043 For the MAX127, it will be adjusted to 0, 5000, or 10000.
0044 RW
0045 ============== ==============================================================
