Advantech ROM-7510, Руководство пользователя

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31 ROM-7510 User Manual
Chapter 5
S
oftware
Functionality
Step 3: Write and check.
5.4 eMMC Test
Step 1: When booting from SD, you should see the directories below:
Step 2: Erase and check.
Step 3: Write and check.
5.5 GPIO Test
ROM-7510 GPIO default setting
# echo -n "0123456789ABCDEF" | dd of=/dev/sda bs=1024 count=1 seek=25118
0+1 records in
0+1 records out
# hexdump -C /dev/sda -s 25720832 -n 16
01887800 30 31 32 33 34 35 36 37 38 39 41 42 43 44 45 46 |0123456789ABCDEF|
Note! This operation may damage the data stored in the USB flash disk.
Please make sure there is no critical data on the USB flash disk being
used for this test. If your USB disk size is small, the seek value needs to
be small.
# ls /dev/mmcblk*
/dev/mmcblk0 /dev/mmcblk0p2 /dev/mmcblk1boot0 /dev/mmcblk1p1
/dev/mmcblk0p1 /dev/mmcblk1 /dev/mmcblk1boot1 /dev/mmcblk1p2
# dd if=/dev/zero of=/dev/mmcblk1 bs=1024 count=1 seek=25118
1+0 records in
1+0 records out
# hexdump -C /dev/mmcblk1 -s 25720832 -n 16
01887800 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
# echo -n "0123456789ABCDEF" | dd of=/dev/mmcblk1 bs=1024 count=1 seek=25118
0+1 records in
0+1 records out
# hexdump -C /dev/mmcblk1 -s 25720832 -n 16
01887800 30 31 32 33 34 35 36 37 38 39 41 42 43 44 45 46 |0123456789ABCDEF|
Note! Please make sure parameter “seek” is equal to 25118 as indicated in
red in above codes. If you create the file to a wrong sector, that may
damage the system.
ROM-7510 Linux OS/sys/class/gpio/ Default direction
GPIO0 gpio97 in
GPIO1 gpio218 in
GPIO2 gpio98 in
GPIO3 gpio219 in
GPIO4 gpio100 in