Original question:
Hi
what is the recommended way to measure power consumption of the device and can I get the power consumption for different components like the deep learning accelerators and the GPU?
Something like the tegrastats on NVIDIA jetson devices.
BR,
SAMPO
Hi Sampo,
EVM User guide: https://www.ti.com/lit/pdf/spruis4
Page 36: Table 4-7. INA Devices I2C Slave Address
The EVM has 2 sets of 16 INA226 for measuring the 32 voltage rails. The Linux SDK has the INA226 device driver and Device tree nodes enabled.
So you can use the sysfs interface of the hwmon to get the power numbers.
Assumption: 8.1 RTOS SDK installed on SD card.
You can switch between the two sets by controlling the gpio216 in the Linux. Boot to Linux command prompt on TDA4VM & execute the below commands:
echo 216 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio216/direction echo 0 > /sys/class/gpio/gpio216/value
Copy the script to /home/root folder of the target file system.
cd /home/root ./power_snapshot.sh
The output
Toggle the gpio216 state to high to get the other set of 16 voltage rails:
echo 1 > /sys/class/gpio/gpio216/value ./power_snapshot.sh
This will give the voltage/power measurements of all the 32 voltage rails.
If no other questions then click on verify answer.
Best Regards,
Keerthy
