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Template:Networking trb141 manual input output status (view source)
Revision as of 10:05, 4 November 2020
, 10:05, 4 November 2020no edit summary
<pre>
ioman.acl.acl0
ioman.adc.adc0
ioman.dwi.dwi0
ioman.dwi.dwi1
ioman.gpio.dio0
ioman.gpio.dio1
ioman.gpio.iio
ioman.gpio.onewire
ioman.relay.relay0
ioman.relay.relay1
</pre>
In order to read value use the <b><i>status</i></b> command:
ubus call ioman.gpio.dio0 status
ubus call ioman.gpio.dio0 status
ubus call ioman.relay.relay0 status
ubus call ioman.relay.relay0 status
To change input settings use '''''update''''' command and write the value.
To change input settings use the <i><b>update</i></b> command and specify a value:
ubus call ioman.gpio.dio0 update '{"value":"0"}'
ubus call ioman.gpio.dio0 update '{"value":"0"}'
ubus call ioman.gpio.dio0 update '{"value":"1"}'
ubus call ioman.gpio.dio0 update '{"value":"1"}'
To change relay settings use '''''update''''' command and write state.
To change relay settings use yhr <i><b>update</i></b> command and specify a state:
ubus call ioman.relay.relay0 update '{"state":"open"}'
ubus call ioman.relay.relay0 update '{"state":"open"}'
iio (isolated input) input 1021 (to read value refer to gpio1021)
iio (isolated input) input 1021 (to read value refer to gpio1021)
In order to read digital input value use <i>cat</i> command.
In order to read digital input value use the <b><i>cat</i></b> command:
cat /sys/class/gpio/gpio14/value
cat /sys/class/gpio/gpio14/value
cat /sys/class/gpio/gpio1021/value
cat /sys/class/gpio/gpio1021/value
To change input state use <b><i>echo</i></b> command where "1" is "dry" state and "0" is "wet" state.
To change an input state usethe <b><i>echo</i></b> command (where "1" is "dry" state and "0" is "wet" state):
echo 0 > /sys/class/gpio/gpio12/value
echo 0 > /sys/class/gpio/gpio12/value
echo 1 > /sys/class/gpio/gpio38/value
echo 1 > /sys/class/gpio/gpio38/value
When one Relay output is open, the other one is closed, so turning on/off the output you will have to change value on both pins. For that <i><b>echo</i></b> command is used. Same principle applies to Latching Relay output.
When one Relay output is open, the other one is closed, so to turn an output on or off, you will have to change value on both pins:
echo 1 > /sys/class/gpio/gpio20/value & echo 0 > /sys/class/gpio/gpio22/value
echo 1 > /sys/class/gpio/gpio20/value & echo 0 > /sys/class/gpio/gpio22/value
====ADC (Analog Input)====
====ADC (Analog Input)====
----
----
The ADC (Analog Input) value can be read from a different directory:
cat /sys/devices/qpnp-vadc-8/mpp4_vadc
<b>Divide the result by 126582</b> in order to convert the number into volts (V).
====One-wire====
====One-wire====
----
----
To read one-wire sensor data you will need to follow these steps:
To read one-wire sensor data you will need to follow these steps:
Set one-wire sensor '''''value''''' to '''''1''''' using '''''ubus''''' command.
<ol>
<li>Set one-wire sensor value to "1' using the <i>ubus</i> command: <pre>ubus call ioman.gpio.onewire update '{"value":"1"}'</pre></li>
<li>List the connected one-wire devices from the <i>/sys/bus/w1/devices</i> directory using the <b><i>ls</i></b> command: <pre>ls /sys/bus/w1/devices</pre></li>
<li>Choose a sensor to read and obtain its state from the <i>/sys/bus/w1/devices/<device_name>/w1_slave</i> directory: <pre>cat /sys/bus/w1/devices/<device_name>/w1_slave</pre></li>
</ol>
Choose sensor that you want to know values off and using '''''cat''''' command read them from '''''/sys/bus/w1/devices/<device_name>/w1_slave''''' directory.
