Advantech ROM-5721, User Manual

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ROM-5721 User Manual
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3.1.7 RTC Test
Set system time to current, then write to RTC
Disable rtc sync service (Default:)
Set system time to current, then write to RTC
Set one incorrect time, then read time from RTC to verify
Restore the RTC time to system time
3.1.8 Storage Test
Below is the storage system path
eMMC: /dev/mmcblk2
SD: /dev/mmcblk1
QSPI1: /dev/mtd0
Test (eg. emmc)
# dd if=/dev/urandom of=data bs=1 count=1024
# dd if=/dev/mmcblk2 of=backup bs=1 count=1024 skip=4096
# dd if=data of=/dev/mmcblk2 bs=1 seek=4096
# dd if=/dev/mmcblk2 of=data1 bs=1 count=1024 skip=4096
# diff data data1
# dd if=backup of=/dev/mmcblk2 bs=1 seek=4096