| ??? 12/21/07 09:45 Modified: 12/21/07 09:47 Read: times |
#148574 - It\'s all relative , ya Responding to: ???'s previous message |
Andy Neil said:
Ap Charles said:
its simple Time period . Wheteher 30 min has passed or not To know whether a time period has "passed", you have to know when it started. If you've had a reset, how will you know: a. that a time period was started, and b. when it started... Thats why we are using an RTC? Ok , let me explain, Initialize the RTC when you have to check that whether 30min has passed or not in a particular time of a *DAY*. keep saving what you read after every 1min or 30sec as per application requirement. Now when you have an unfortunate reset check the RTC current time with the previous stored time , that would put you to the path. In case you do counting with the microcontroller you are gone . Best/ AP |
| Topic | Author | Date |
| Long duration timer | 01/01/70 00:00 | |
| Any MCU can do this with ease | 01/01/70 00:00 | |
Long duration timer | 01/01/70 00:00 | |
| I would not trust MCU for this but an RTC | 01/01/70 00:00 | |
| Wrong end of stick | 01/01/70 00:00 | |
| Wrong end of right stick | 01/01/70 00:00 | |
| It's all relative | 01/01/70 00:00 | |
| It\'s all relative , ya | 01/01/70 00:00 | |
| I see | 01/01/70 00:00 | |
| ya | 01/01/70 00:00 | |
| Ap is right | 01/01/70 00:00 |