Test Tools; Emmc Test; Usb Test - Advantech RSB-4221 User Manual

3.1

Test Tools

All test tools must be verified on RSB-4221 Evaluation kit, please prepare the
required test fixtures before verifying each specified I/O. If you have any problem to
get the test fixture, please contact your Advantech contact window for help.
3.2

eMMC Test

Step1: Erase and check
#busyboxdd if=/dev/zero of=/dev/block/mmcblk0 bs=1024 count=1 seek=1
1+0 records in
1+0 records out
#busyboxhexdump -C /dev/block/mmcblk0 -s 1024 -n 16
01887800 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
Step2: Write and check
#echo -n "0123456789ABCDEF" | dd of=/dev/block/mmcblk0 bs=1024 count=1
seek=1
0+1 records in
0+1 records out
#busyboxhexdump -C /dev/block/mmcblk0 –s 1024 -n 16
01887800
|0123456789ABCDEF|
Note! After inserting the SD Card, the eMMC NAND Flash will be mmcblk1
3.3

USB Test

Step 1: Insert the USB flash disk and make sure it is in RSB-4221 device list
Step 2: Erase and check
#dd if=/dev/zero of=/dev/sdabs=1024 count=1 seek=25118
1+0 records in
1+0 records out
#busyboxhexdump -C /dev/sda -s 25720832 -n 16
01887800 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
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