# i2cdump -f -y 0 0x68
No size specified (using byte-data access)
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 58 37 14 04 01 89 10 00 00 00 00 00 00 00 00 8b X7?????........?
10: 00 20 00
# hwclock -w
ds3231_set_datetime: secs=11, mins=38, hours=14, mday=1, mon=8, year=110, wday=3
ds3231_set_datetime: 11 38 14 04 01 89 10
# i2cdump -f -y 0 0x68
No size specified (using byte-data access)
0 1 2 3 4 5 6 7 8 9 a b c d e f 0123456789abcdef
00: 22 38 14 04 01 89 10 00 00 00 00 00 00 00 00 8b "8?????........?
10: 00 20 00
#