| ??? 12/09/05 06:10 Read: times Msg Score: +1 +1 Informative |
#104947 - real time clock |
Im just a hobbiest, and Im new to microcontrollers, but I think their is a typo in Craig Steiner's tutorial "Software-Based Real Time Clock (RTC)." In the timer interupt, he turns off the clock, sets it too the appropriate value, and then turns it back on.
CLR TR1 MOV TH1,#HIGH (RESET_VALUE-5) MOV TL1,#LOW (RESET_VALUE-5) SETB TR1 The appropriate value is RESET_VALUE. The clock is off for 5 machine cycles, so he incorporates the "-5". It seems like the clock would be delayed by 10 cycles. Am I looking at this wrong or is this suppose to be +5? |
| Topic | Author | Date |
| real time clock | 01/01/70 00:00 | |
| Yes, it is rubbish | 01/01/70 00:00 | |
| other method | 01/01/70 00:00 | |
| priorities | 01/01/70 00:00 | |
| Latency is always variable | 01/01/70 00:00 | |
| Latency | 01/01/70 00:00 | |
The Bible | 01/01/70 00:00 |