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resources:tools-software:linux-drivers:iio-adc:ad7768 [05 Jul 2018 14:08]
Stefan Popa Description
resources:tools-software:linux-drivers:iio-adc:ad7768 [05 Jul 2018 15:07] (current)
Stefan Popa More Information
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 See [[software:​linux:​docs:​iio:​iio|IIO]] for more information. See [[software:​linux:​docs:​iio:​iio|IIO]] for more information.
  
 +====== Source Code ======
 +
 +===== Status =====
 +
 +^ Source ^ Mainlined? ^
 +| [[linux.github>​master/​drivers/​iio/​adc/​ad7768.c|git]] | [In progress...] |
 +
 +===== Files =====
 +
 +^ Function ^ File ^
 +| driver ​ | [[linux.github>​master/​drivers/​iio/​adc/​ad7768.c]] |
 +| devicetree bindings | [[linux.github>​master?​Documentation/​devicetree/​bindings/​iio/​adc/​adi,​ad7768.txt | Documentation/​devicetree/​bindings/​iio/​adc/​adi,​ad7768.txt]] |
 +| hdl project | [[https://​github.com/​analogdevicesinc/​hdl/​tree/​hdl_2017_r1/​projects/​ad7768evb | hdl]] |
 +
 +====== Example Linux Device-Tree Initialization ======
 +
 +Required properties:
 +  * compatible: Must be one of "​adi,​ad7768"​.
 +  * reg: SPI chip select number for the device.
 +  * spi-max-frequency:​ See Documentation/​devicetree/​bindings/​spi/​spi-bus.txt.
 +  * dmas: DMA specifier, consisting of a phandle to DMA controller node.
 +  * dma-names: Must be "​rx"​.
 +  * vref-supply:​ phandle to the regulator for ADC reference voltage.
 +
 +^ Function ^ File ^
 +| AD7768 Device Tree  | [[linux.github>​master?​arch/​arm/​boot/​dts/​zynq-zed-adv7511-ad7768.dts
 +| zynq-zed-adv7511-ad7768.dts]] |
 +
 +====== Driver testing ======
 +
 +{{page>​software:​linux:​docs:​iio:​iio_snippets#​iio device files&​noheader&​firstseconly&​noeditbtn}}
 +
 +<WRAP top tip round box 60%>​**TIP:​**
 +An example program which uses the interface can be found here:
 +  * [[resources:​tools-software:​linux-software:​iio_oscilloscope|IIO Oscilloscope]]
 +</​WRAP>​\\
 +
 +<WRAP box bggreen><​wrap info>​This specifies any shell prompt running on the target</​wrap>​
 +<​xterm>​
 +root:/> **cd /​sys/​bus/​iio/​devices/​**
 +root:/​sys/​bus/​iio/​devices>​ ls
 +iio:device0
 +
 +root:/​sys/​bus/​iio/​devices>​ **cd iio\:​device0**
 +
 +root:/​sys/​bus/​iio/​devices/​iio:​device0>​ **ls -l**
 +drwxrwxrwx 2 root root    0 Jan  1 00:02 buffer
 +-rw-rw-rw- 1 root root 4096 Jan  1 00:02 dev
 +-rw-rw-rw- 1 root root 4096 Jan  1 00:02 in_voltage_scale
 +-rw-rw-rw- 1 root root 4096 Jan  1 00:02 name
 +lrwxrwxrwx 1 root root    0 Jan  1 00:02 of_node -> ../​../​../​../​../​../​../​../​firmware/​devicetree/​base/​amba/​spi@e0006000/​adc@0
 +drwxrwxrwx 2 root root    0 Jan  1 00:02 power
 +drwxrwxrwx 2 root root    0 Jan  1 00:02 scan_elements
 +lrwxrwxrwx 1 root root    0 Jan  1 00:02 subsystem -> ../​../​../​../​../​../​../​../​bus/​iio
 +-rw-rw-rw- 1 root root 4096 Jan  1 00:02 uevent
 +</​xterm></​WRAP>​
 +
 +=== Show device name ===
 +
 +<WRAP box bggreen><​wrap info>​This specifies any shell prompt running on the target</​wrap>​
 +<​xterm>​
 +root:/​sys/​bus/​iio/​devices/​iio:​device0>​ **cat name**
 +ad7768
 +</​xterm></​WRAP>​
 +
 +=== Show scale ===
 +
 +**Description:​**\\
 +scale to be applied to in_voltage0_raw in order to obtain the measured voltage in millivolts.
 +
 +<WRAP box bggreen><​wrap info>​This specifies any shell prompt running on the target</​wrap>​
 +<​xterm>​
 +root:/​sys/​bus/​iio/​devices/​iio:​device0>​ **cat in_voltage_scale **
 +0.000488281
 +</​xterm></​WRAP>​
 +
 +====== More Information ======
 +
 +{{page>​software:​linux:​docs:​iio:​iio_snippets#​iio pointers&​noheader&​firstseconly&​noeditbtn}}
resources/tools-software/linux-drivers/iio-adc/ad7768.1530792512.txt.gz · Last modified: 05 Jul 2018 14:08 by Stefan Popa