| ??? 01/07/05 19:48 Read: times |
#84547 - possibles Responding to: ???'s previous message |
if IT0 has a higher priority that IE0, IT0 WILL interrupt the IE0 ISR
You first question ("it would be more beneficial to know how more routined you ared in the '51")was garbled could you please resend that. How much '51 experience do you have? We have a proprietary monitor running via a 485 bus that allows peeking at RAM locations. 1) many "monitors" use an interrupt, do yours? 2) if all you can see is RAM, write the IP SFR to some RAM locations at various places in your ex0 interrupr. 3) (temporarily) remove ALL definitions of the IP and IE SFRs and IP and IE bits from your .h file. List EVERY error. You may find that some pesky spot inadvertently a) changes the IP or b) disables the IE0. 3b is my best gtuess Erik |
| Topic | Author | Date |
| Can't set interrupt priority | 01/01/70 00:00 | |
| need more | 01/01/70 00:00 | |
| re Erik's questions | 01/01/70 00:00 | |
| possibles | 01/01/70 00:00 | |
| re: possibilities | 01/01/70 00:00 | |
| Can we solve like this? | 01/01/70 00:00 | |
| but why? | 01/01/70 00:00 | |
| re: can we solve like this? | 01/01/70 00:00 | |
| re but why when it makes no difference | 01/01/70 00:00 | |
Software bug? | 01/01/70 00:00 |