Differences

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

--- resources:tools-software:linux-drivers:iio-dac:ad5758 [23 May 2018 11:05] – Optional properties Stefan Popa
+++ resources:tools-software:linux-drivers:iio-dac:ad5758 [15 Oct 2018 16:25] (current) – adc->dac Stefan Popa
@@ Line 21: / Line 21: @@
 ^ Source ^ Mainlined? ^
-| [[https://github.com/analogdevicesinc/linux/blob/rpi-4.9.y/drivers/iio/dac/ad5758.c|git]] | [In progress...] |
+| [[git.linux.org>drivers/iio/dac/ad5758.c|git]] | [[git.linux.org>drivers/iio/dac/ad5758.c|Yes]]  |
 ===== Files =====
 ^ Function ^ File ^
-| driver  | [[https://github.com/analogdevicesinc/linux/blob/rpi-4.9.y/drivers/iio/dac/ad5758.c]] |
+| driver  | [[git.linux.org>drivers/iio/dac/ad5758.c]] |
 ===== Devicetree =====
@@ Line 43: / Line 43: @@
    * adi,slew: Array of slewrate settings should contain 3 fields:
    * adi,range: The output range
+<code>
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+	ad5758@0 {
+                compatible = "adi,ad5758";
+                reg = <0>;
+                spi-max-frequency = <1000000>;
+                spi-cpha;
+                reset-gpios = <&gpio 22 0>;  /* optional */
+                adi,dc-dc-mode = <2>;
+                adi,dc-dc-ilim = <200>;
+                adi,slew = <1 200000 12>;
+                adi,range = <1>;
+</code>
+====== Driver testing ======
+<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**
+-r--r--r-- 1 root root 4096 May 23 09:14 dev
+-rw-r--r-- 1 root root 4096 May 23 09:14 out_voltage0_powerdown
+-rw-r--r-- 1 root root 4096 May 23 09:14 out_voltage0_raw
+-rw-r--r-- 1 root root 4096 May 23 09:14 out_voltage_scale
+-r--r--r-- 1 root root 4096 May 23 09:14 name
+drwxr-xr-x 2 root root    0 May 23 09:14 power
+lrwxrwxrwx 1 root root    0 May 23 09:14 subsystem -> ../../../../../../../../bus/iio
+-rw-r--r-- 1 root root 4096 May 23 09:14 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**
+ad5758
+</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 out_voltage_scale **
+.152587890
+</xterm></WRAP>
+=== Set channel 0 output voltage ===
+**Description:**\\
+/sys/bus/iio/devices/deviceX/out_voltage0_raw\\
+Raw (unscaled, no bias etc.) output voltage for
+channel 0.
+<WRAP box bggreen><wrap info>This specifies any shell prompt running on the target</wrap>
+<xterm>
+root:/sys/bus/iio/devices/iio:device0> **echo 32767 > out_voltage0_raw**
+</xterm></WRAP>
+**U** = //out_voltage0_raw * out_voltage_scale// = 32767 * 0.152587890 = **4999.84 //mV//**
+=== Enable power down mode on output 0 ===
+/sys/bus/iio/devices/deviceX/out_voltage0_powerdown
+**Description:**\\
+Writing 1 causes output 0 to enter the power down mode. Clearing returns to
+normal operation.
+<WRAP box bggreen><wrap info>This specifies any shell prompt running on the target</wrap>
+<xterm>
+root:/sys/bus/iio/devices/iio:device0> **echo 1 > out_voltage0_powerdown**
+root:/sys/bus/iio/devices/iio:device0>  **cat out_voltage0_powerdown**
+root:/sys/bus/iio/devices/iio:device0> **echo 0 > out_voltage0_powerdown**
+root:/sys/bus/iio/devices/iio:device0>  **cat out_voltage0_powerdown**
+</xterm></WRAP>
+====== More Information ======
+{{page>software:linux:docs:iio:iio_snippets#iio pointers&noheader&firstseconly&noeditbtn}}

Wiki

Analog Devices Wiki

Differences

Analog Devices Wiki

Differences

Page Tools