SBC-EC9100 User Manual
Embest Technology Co. Ltd
|
http://www.embest-tech.com
11
2.2
RTC
Connect the battery module to the board, then execute the following instructions on the serial terminal:
Check the current system time:
root@embest:~# date
Sat Jan 1 00:02:07 UTC 2000
Set current time as 10:46, March 9, 2016
root@embest:~# date 030910462016
Wed Mar 9 10:46:00 UTC 2016
Write system clock into RTC:
root@embest:~# hwclock –w
Read RTC value:
root@embest:~# hwclock
Wed 09 Mar 2016 10:46:23 AM UTC -0.432561 seconds
The above information indicates that the hardware clock-RTC-has been set to March 9, 2016, so the system clock
is saved in the hardware clock.
Reboot the system and check the current system time:
root@embest:~# date
Wed Mar 9 10:46:45 UTC 2016
2.3
EEPROM
Execute the following instructions on the serial terminal:
root@embest:~# ./eeprom_test
data will write to EEPROM at 0x400
00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f
40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f
50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f
60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f
70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f
