| ??? 05/16/07 20:23 Read: times |
#139392 - Why no more than 100K? Responding to: ???'s previous message |
First of all thanks Erik and Daniel for your answers.
I dont understand why I cant measure more than 100khz if the clock is 24MHz. I will take a look at the internal schematic of the 8051. by the way, my intention is not to make the best frequency meter, I'm doing it only to practice a) making my first PCB with a 8051, b) LCD display interface, c) timers, d) counters, e) interrupts, so 100K is a good value. Some years ago I built a freqency generator (square, triangle,..) with a chip like the NE555, so, again, 100k will be OK. thanks!!! Jorge |
| Topic | Author | Date |
| 8051 frequency meter. Interrupt question | 01/01/70 00:00 | |
| Formatted Code | 01/01/70 00:00 | |
| Thanks Jon | 01/01/70 00:00 | |
| No Problem - What about EA | 01/01/70 00:00 | |
| EA | 01/01/70 00:00 | |
| corrected code | 01/01/70 00:00 | |
| that is a pipe dream | 01/01/70 00:00 | |
| External hardware | 01/01/70 00:00 | |
| Why no more than 100K? | 01/01/70 00:00 | |
| the obvious way to do this is to use one timer as | 01/01/70 00:00 | |
| there is a 3rd byte | 01/01/70 00:00 | |
| no good | 01/01/70 00:00 | |
| assuming you can do the math... | 01/01/70 00:00 | |
| HUH | 01/01/70 00:00 | |
| And what? | 01/01/70 00:00 | |
| ... and ... | 01/01/70 00:00 | |
| Eh? | 01/01/70 00:00 | |
| the counter is not 'a counter' | 01/01/70 00:00 | |
| you should be on the safe side... | 01/01/70 00:00 | |
| who cares who 'wins' | 01/01/70 00:00 | |
| Continuation... | 01/01/70 00:00 | |
| now let\'s cheat | 01/01/70 00:00 | |
| Get something working first | 01/01/70 00:00 | |
| I diasagree | 01/01/70 00:00 | |
It's WORKING!! | 01/01/70 00:00 |