− | | RTC time (system clock). 7 bytes are read from this. The upper nibble of each byte encodes 10s, so each byte is post-processed with (byte & 0xF) + (10 * (byte >> 4)). | + | | RTC time (system clock). 7 bytes are read from this. The upper nibble of each byte encodes 10s, so each byte is post-processed with (byte & 0xF) + (10 * (byte >> 4)). Byte 0 encodes seconds, byte 6 is years, etc. |