| ??? 05/09/06 21:28 Modified: 05/09/06 21:30 Read: times Msg Score: +1 +1 Good Question |
#115899 - Listen and learn Responding to: ???'s previous message |
Batuhan Celik said:
I have to use those nop operations. Because I'm driving 600V 15A IGBT through optocouplers. And IGBTs need aproximately 3 microseconds falling and rising time. Course, I could have said, don't use messy methods like repeated NOPS when you can use a little counted loops like this
MOV ctr,#ct_limit ;ct_limit can be changed globally that way
lp: DJNZ ctr,lp ;or DJNZ ctr,$
; which can obviously become a little macro.
...but you obviously know better.. Yes I'm beginner but I have necessary programming tactics.I'm an egineering faculty student. Hey, so why does your code not work ? Three, senior, experienced, professional engineers have said try a different approach. If you know better, why ask questions ? Your program doesn't work because you don't really understand interrupts, and you are using a crazy technique (sorry Jon) Another friendly clue: Which operations here are "atomic" ones ? Steve |
| Topic | Author | Date |
| I'm in trouble with my PWM software | 01/01/70 00:00 | |
| Interrupts ? | 01/01/70 00:00 | |
| Firstly I want to explain how my hardwar | 01/01/70 00:00 | |
| 89C52 | 01/01/70 00:00 | |
| use a uC with a PCA | 01/01/70 00:00 | |
| wiggling with the stack pointer | 01/01/70 00:00 | |
| I know that.... | 01/01/70 00:00 | |
| no you don't | 01/01/70 00:00 | |
| To: Erik | 01/01/70 00:00 | |
| My code | 01/01/70 00:00 | |
| I can't tell | 01/01/70 00:00 | |
| His Code | 01/01/70 00:00 | |
| Nicely formatted | 01/01/70 00:00 | |
| As Erik suggested | 01/01/70 00:00 | |
| not valuable | 01/01/70 00:00 | |
| Hard to understand | 01/01/70 00:00 | |
| asking for? | 01/01/70 00:00 | |
| Weird DNA.... | 01/01/70 00:00 | |
| that does make a difference | 01/01/70 00:00 | |
| Playing with The Stack Pointer | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 | |
| ORG 33H | 01/01/70 00:00 | |
| OK | 01/01/70 00:00 | |
| replying to what in the above refer to m | 01/01/70 00:00 | |
| Listen and learn | 01/01/70 00:00 | |
| excellent question | 01/01/70 00:00 | |
| I'm listening and learning | 01/01/70 00:00 | |
| Oops | 01/01/70 00:00 | |
| Rewrite ! | 01/01/70 00:00 | |
| WRONG | 01/01/70 00:00 | |
| Basic methods & specific details | 01/01/70 00:00 | |
| To:Neil | 01/01/70 00:00 | |
| +ve&-ve | 01/01/70 00:00 | |
| totally unnneded information | 01/01/70 00:00 | |
| +ve | 01/01/70 00:00 | |
| Me too | 01/01/70 00:00 | |
| halfway | 01/01/70 00:00 | |
| Just like the first time I saw 3v3 | 01/01/70 00:00 | |
| Mid 70's | 01/01/70 00:00 | |
| the reason | 01/01/70 00:00 | |
| Yes - Very Well Established | 01/01/70 00:00 | |
| the trouble is | 01/01/70 00:00 | |
| Other calls | 01/01/70 00:00 | |
| One thing for the future | 01/01/70 00:00 | |
| I do not see the point | 01/01/70 00:00 | |
| I got bored... | 01/01/70 00:00 | |
| argh, so many nops | 01/01/70 00:00 | |
| NOP | 01/01/70 00:00 | |
| New version | 01/01/70 00:00 | |
| Thanks Steve...and others | 01/01/70 00:00 | |
| NO | 01/01/70 00:00 | |
| I suggest you look at your own changes | 01/01/70 00:00 | |
| His new code | 01/01/70 00:00 | |
| very informative | 01/01/70 00:00 | |
| Another happy customer | 01/01/70 00:00 | |
| Young Double E? | 01/01/70 00:00 | |
| finished | 01/01/70 00:00 | |
the one at which end of the body? | 01/01/70 00:00 |