Embest AM3517 User Manual download pdf (Page 28)

3.2 3.3 Test on RTC

SOC8200 has a hardware clock, it is used to save and restore the system time, refer to the

following test methods:

1. Set the system time at 5:55 p.m. on the March 24, 2010:

[root@OMAP3EVM /]# date 032417552010

Wed Mar 24 17:55:00 UTC 2010

2. Write the system time into RTC:

[root@OMAP3EVM /]# hwclock -w

3. Read RTC:

[root@OMAP3EVM /]# hwclock

Wed Mar 24 17:55:06 2010 0.000000 seconds

The hardware clock RTC will be set to March 24 2010 and the system time is saved in the

hardware clock.

4. Reboot the system and input the following commands to restore the system time.

[root@OMAP3EVM /]# hwclock -s

[root@OMAP3EVM /]# date

Wed Mar 24 17:55:37 UTC 2010

3.2 3.4 Test on MMC/SD card

1. Insert the MMC/SD card and system displays the detection information:

[root@OMAP3EVM /]# mmc0: new MMC card at address 0001

mmcblk1: mmc0:0001 000000 122 MiB

mmcblk1: p1

2. Mount the MMC/SD card to directory of /mnt:

[root@OMAP3EVM /]# mount -t vfat /dev/mmcblk1p1 /mnt/

[root@OMAP3EVM /]# ls /mnt

MLO u-boot.bin ubi.img

flash-uboot.bin uImage x-load.bin.ift_for_NAND

3. Umount the SD card:

[root@OMAP3EVM /]# umount /mnt

3.2 3.5 Test on USB OTG

Use the SOC8200 as DEVICE,USB OTG as slave：

1. The user can connected to switch development board and the pc machine via USB mini B to

USB A cable after the system runs.

Install the Linux USB Ethernet/RNDIS Gadget driver according to the appendix

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Embest AM3517 User Manual Page 28