Wiki

Analog Devices Wiki

English
English
简体中文
简体中文
日本語
日本語
Руccкий
Руccкий

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
resources:tools-software:linux-drivers:iio-adc:ad7192 [08 Feb 2019 14:24] – [Example platform device initialization] Mircea Caprioruresources:tools-software:linux-drivers:iio-adc:ad7192 [08 Feb 2019 14:51] (current) – [Device tree support] Mircea Caprioru
Line 131: Line 131:
 } }
 arch_initcall(board_init); arch_initcall(board_init);
-</code> 
- 
-====== Adding Linux driver support ====== 
- 
-Configure kernel with "make menuconfig" (alternatively use "make xconfig" or 
-"make qconfig") 
- 
-<WRAP round help> 
-The AD7192 Driver depends on **CONFIG_SPI** 
-</WRAP> 
- 
-<code> 
-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 
- 
-           *** Analog to digital converters *** 
-     [--snip--] 
- 
-     <*>   Analog Devices AD7190 AD7192 AD7195 ADC driver 
- 
-     [--snip--] 
- 
 </code> </code>
  
Line 169: Line 141:
  
 / { / {
- compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709"; 
  
  fragment@0 {  fragment@0 {
  target-path = "/";  target-path = "/";
- __overlay__ { + dvdd: fixedregulator@0 { 
- dvdd: fixedregulator@0 { + compatible = "regulator-fixed"; 
- compatible = "regulator-fixed"; + regulator-name = "fixed-supply"; 
- regulator-name = "fixed-supply"; + regulator-min-microvolt = <3300000>; 
- regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; 
- regulator-max-microvolt = <3300000>; + regulator-boot-on;
- regulator-boot-on; +
- };+
  };  };
  };  };
Line 186: Line 155:
  fragment@1 {  fragment@1 {
  target-path = "/";  target-path = "/";
- __overlay__ { + avdd: fixedregulator@1 { 
- avdd: fixedregulator@1 { + compatible = "regulator-fixed"; 
- compatible = "regulator-fixed"; + regulator-name = "fixed-supply2"; 
- regulator-name = "fixed-supply2"; + regulator-min-microvolt = <3300000>; 
- regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; 
- regulator-max-microvolt = <3300000>; + regulator-boot-on;
- regulator-boot-on; +
- };+
  };  };
  };  };
Line 199: Line 166:
  fragment@3 {  fragment@3 {
  target = <&spi0>;  target = <&spi0>;
- __overlay__ { 
  #address-cells = <1>;  #address-cells = <1>;
  #size-cells = <0>;  #size-cells = <0>;
  status = "okay";  status = "okay";
  
- ad7190@0 { + ad7190@0 { 
- compatible = "adi,ad7190"; + compatible = "adi,ad7190"; 
- reg = <0>; + reg = <0>; 
- spi-max-frequency = <1000000>; + spi-max-frequency = <1000000>; 
- spi-cpol; + spi-cpol; 
- spi-cpha; + spi-cpha; 
- #interrupt-cells = <2>; + #interrupt-cells = <2>; 
- interrupts = <25 0x2>; + interrupts = <25 0x2>; 
- interrupt-parent = <&gpio>; + interrupt-parent = <&gpio>; 
- dvdd-supply = <&dvdd>; + dvdd-supply = <&dvdd>; 
- avdd-supply = <&avdd>;+ avdd-supply = <&avdd>;
  
- adi,reference-voltage-mv = /bits/ 16  <3300>; + adi,reference-voltage-mv = /bits/ 16  <3300>; 
- adi,clock-source-select = [02]; + adi,clock-source-select = [02]; 
- adi,refin2-pins-enable; + adi,refin2-pins-enable; 
- adi,rejection-60-Hz-enable; + adi,rejection-60-Hz-enable; 
- adi,chop-enable; + adi,chop-enable; 
- adi,buffer-enable; + adi,buffer-enable; 
- adi,burnout-currents-enable; + adi,burnout-currents-enable; 
- adi,sinc3-filter-enable; + adi,sinc3-filter-enable; 
- adi,unipolar-enable; + adi,unipolar-enable;
- };+
  };  };
  };  };
 }; };
 </code> </code>
 +
 +<note important> Interrupt pin connection - interrupts = <25 0x2>; this line means that gpio pin 25 is used for the interrupt and it must be connect to the DOUT/RDY pin of AD7192 along with the SPI MISO.  
 + </note>
 +====== Adding Linux driver support ======
 +
 +Configure kernel with "make menuconfig" (alternatively use "make xconfig" or
 +"make qconfig")
 +
 +<WRAP round help>
 +The AD7192 Driver depends on **CONFIG_SPI**
 +</WRAP>
 +
 +<code>
 +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
 +
 +           *** Analog to digital converters ***
 +     [--snip--]
 +
 +     <*>   Analog Devices AD7190 AD7192 AD7195 ADC driver
 +
 +     [--snip--]
 +
 +</code>
 +
  
 ====== Hardware configuration ====== ====== Hardware configuration ======
resources/tools-software/linux-drivers/iio-adc/ad7192.1549632283.txt.gz · Last modified: 08 Feb 2019 14:24 by Mircea Caprioru

Page Tools