QY-IMX6S Linux Function And Test Manual
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,Device tree file enable [qiyang_buzzer]node
2.2
RTC Test
QY-IMX6S mainboard adopts I2C2 connect DS1338 Chip on the
base board as external hardware clock. Please confirm that you put on the
battery before testing RTC.
Test Principle
：
Set system time through [date] system command, and then write
system time into hardware clock through [hwclock] command. Through
[rtc_test ]program to read hardware timer and print it. After powering off,
restart to check whether the clock is accurate.
Test Process & Result
：
1.Execute [date] command on the board and check the current system
clock.
date
2.Set system clock through [date] command, for example, to set on
current PC display time.
