Difference between revisions of "DESK-XZ7-L/Peripherals/Temperature sensor"
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<section end=History/> | <section end=History/> | ||
| + | __FORCETOC__ | ||
<section begin=Body/> | <section begin=Body/> | ||
| − | == Temperature sensors == | + | ==Peripheral Temperature sensors == |
| − | |||
| − | The | + | [[BORA SOM | BORA]] and [[BORA Xpress SOM | BORA Xpress]] SOMs has a [http://www.ti.com/lit/ds/symlink/tmp422.pdf TMP421AIDCN] temperature sensor onboard. |
| − | + | ||
| + | ===Accessing the peripheral === | ||
| + | |||
| + | The temperature information can be accessed through the <code>sysfs</code> interface: | ||
| + | |||
| + | ==== read the PCB temperature ==== | ||
<pre> | <pre> | ||
root@bora:~# cat /sys/devices/soc0/axi/e0004000.i2c/i2c-0/0-004f/hwmon/hwmon1/temp1_input | root@bora:~# cat /sys/devices/soc0/axi/e0004000.i2c/i2c-0/0-004f/hwmon/hwmon1/temp1_input | ||
</pre> | </pre> | ||
the returned value has to be divided by 1000 for a °C temperature | the returned value has to be divided by 1000 for a °C temperature | ||
| − | + | ==== read the CPU temperature ==== | |
<pre> | <pre> | ||
root@bora:~# cat /sys/devices/soc0/axi/e0004000.i2c/i2c-0/0-004f/hwmon/hwmon1/temp2_input | root@bora:~# cat /sys/devices/soc0/axi/e0004000.i2c/i2c-0/0-004f/hwmon/hwmon1/temp2_input | ||
| Line 28: | Line 33: | ||
the returned value has to be divided by 1000 for a °C temperature | the returned value has to be divided by 1000 for a °C temperature | ||
| − | Moreover, the | + | ==== internal SoC temperature ==== |
| + | |||
| + | Moreover, the SoC has an internal temperature sensor device which can be read using the following shell script: | ||
<pre> | <pre> | ||
root@bora:~# cat temp.sh | root@bora:~# cat temp.sh | ||
| Line 44: | Line 51: | ||
Cpu Temp: 46.0172 | Cpu Temp: 46.0172 | ||
</pre> | </pre> | ||
| − | |||
<section end=Body/> | <section end=Body/> | ||
| − | + | [[Category:BORA]] [[Category:BORA Xpress]] | |
| − | |||
| − | [[Category:BORA]] | ||
Latest revision as of 09:16, 26 January 2024
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| 2024/01/23 | DESK-XZ7-L-1.0.1 release | ||
Contents
Peripheral Temperature sensors[edit | edit source]
BORA and BORA Xpress SOMs has a TMP421AIDCN temperature sensor onboard.
Accessing the peripheral[edit | edit source]
The temperature information can be accessed through the sysfs interface:
read the PCB temperature[edit | edit source]
root@bora:~# cat /sys/devices/soc0/axi/e0004000.i2c/i2c-0/0-004f/hwmon/hwmon1/temp1_input
the returned value has to be divided by 1000 for a °C temperature
read the CPU temperature[edit | edit source]
root@bora:~# cat /sys/devices/soc0/axi/e0004000.i2c/i2c-0/0-004f/hwmon/hwmon1/temp2_input
the returned value has to be divided by 1000 for a °C temperature
internal SoC temperature[edit | edit source]
Moreover, the SoC has an internal temperature sensor device which can be read using the following shell script:
root@bora:~# cat temp.sh
#!/bin/sh
# Tcpu
TEMP_RAW=`cat /sys/devices/soc0/axi/f8007100.adc//iio\:device1/in_temp0_raw`
TEMP_OFFSET=`cat /sys/devices/soc0/axi/f8007100.adc//iio\:device1/in_temp0_offset`
TEMP_SCALE=`cat /sys/devices/soc0/axi/f8007100.adc//iio\:device1/in_temp0_scale`
TEMP=`awk "BEGIN {print (($TEMP_RAW+$TEMP_OFFSET)*$TEMP_SCALE)/1000}"`
echo "Cpu Temp: ${TEMP}"
root@bora:~# chmod u+x temp.sh
root@bora:~# ./temp.sh
Cpu Temp: 46.0172
