Industrial I/O (IIO) is a kernel subsystem dedicated to analog-to-digital converters (ADC) and digital-to-analog converters (DAC). With the growing number of sensors (measurement devices with analogue to digital, or digital to analogue, capabilities) with different code implementations scattered over the kernel sources, gathering them became necessary. This is what the IIO framework does, in a generic and homogeneous way. Jonathan Cameron and the Linux IIO community have been developing it since 2009.
Accelerometers, gyroscopes, current/voltage measurement chips, light sensors, pressure sensors, and so on all fall into the IIO family of devices.
The IIO model is based on a device and channel architecture:
- Device represents the chip itself. It is the top level of the hierarchy.
- Channel represents a single acquisition line of the device. A device may have one...
