I2C Test; Usb Test - Advantech ROM-5721 User Manual

3.1.5

I2C Test

Loopback test (eg. ttymxc0)
I2c set and get
root@imx8mmrom5721a1:~# i2cset -f -y 3 0x0a 0 0xff00 w
root@imx8mmrom5721a1:~# i2cget -f -y 3 0x0a 0 w
0x11a0
3.1.6

USB Test

Insert a USB disk first.
After insert USB disk...
Test (eg. if usb disk is /dev/sda)
# dd if=/dev/urandom of=data bs=1 count=1024
# dd if=/dev/sda of=backup bs=1 count=1024 skip=4096
# dd if=data of=/dev/sda bs=1 seek=4096
# dd if=/dev/sda of=data1 bs=1 count=1024 skip=4096
# diff data data1
# dd if=backup of=/dev/sda bs=1 seek=4096
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