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resources:tools-software:linux-drivers:iio-adc:ad7768 [05 Jul 2018 14:12] – Source Code Stefan Poparesources:tools-software:linux-drivers:iio-adc:ad7768 [05 Jul 2018 15:07] – More Information Stefan Popa
Line 22: Line 22:
 ^ Source ^ Mainlined? ^ ^ Source ^ Mainlined? ^
 | [[linux.github>master/drivers/iio/adc/ad7768.c|git]] | [In progress...] | | [[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.txt · Last modified: 06 Nov 2023 11:41 by Ana-Maria Cusco

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