Get CMOS time

[Thunder]

Hello,
I have 3 bytes from CMOS: sec, min and hour.

The problem is that, when I decode digits into string, I get wrong time? (The converter from digit to string works fine)

Thanks. Bye

[Tim]

How are you decoding the digits? They're BCD encoded, which means that the high nibble and low nibble contain separate decimal digits. If you display the numbers as hex they will appear as their decimal equivalents. To convert to decimal, do:

Code: Select all

sec = ((sec_bcd & 0xf0) >> 16) * 10 + (sec_bcd & 0x0f);

[Thunder]

Thank you for explaining, but I use a bit different method:
TIME.hour=((TIME.hour>>4)*10+(TIME.hour & 0xF));

Thanks again . Bye

[Tim]

That's exactly the same thing .