This version is outdated by a newer approved version.
This version (09 Sep 2011 16:04) was approved by Michael Hennerich.The Previously approved version (29 Aug 2011 22:01) is available.
This version (09 Sep 2011 16:04) was approved by Michael Hennerich.The Previously approved version (29 Aug 2011 22:01) is available.This is an old revision of the document!
Table of Contents
AD2S1200 IIO Resolver-to-Digital Converter Linux Driver
Supported Devices
Description
This is a Linux industrial I/O (IIO) subsystem driver, targeting Resolver-to-Digital Converters. The industrial I/O subsystem provides a unified framework for drivers for many different types of converters and sensors using a number of different physical interfaces (i2c, spi, etc). See IIO for more information.
Source Code
Status
Files
| Function | File |
|---|---|
| driver | drivers/staging/iio/resolver/ad2s120x.c |
Adding Linux driver support
Configure kernel with “make menuconfig” (alternatively use “make xconfig” or “make qconfig”)
The Driver depends on CONFIG_SPI
Linux Kernel Configuration Device Drivers ---> [*] Staging drivers ---> <*> Industrial I/O support ---> --- Industrial I/O support -*- Enable ring buffer support within IIO -*- Industrial I/O lock free software ring -*- Enable triggered sampling support *** Resolver to digital converters *** [--snip--] <*> Analog Devices AD2S120x driver [--snip--]
Driver Usage
The device file path may looks like,
/sys/devices/platform/bfin-spi.0/spi0.3/iio/device0/ad2s120x>
There are two files:
| File Name | Permission | Usage |
|---|---|---|
| pos_vel | read only | 12 bits unsigned angular value and 12 bits signed velocity value |
| pos | read only | 12 bits unsigned angular value |
| vel | read only | 12 bits signed velocity value |
| description | read only | description about this chip |
More Information
- IIO mailing list: linux [dash] iio [at] vger [dot] kernel [dot] org
resources/tools-software/linux-drivers/iio-resolver/ad2s1200.1315577091.txt.gz · Last modified: 09 Sep 2011 16:04 by Michael Hennerich