| ??? 10/24/05 12:42 Read: times |
#102821 - thus the cirrect answer to the original Responding to: ???'s previous message |
If the external interrupt is level-activated, the external source has to hold the request active until the requested interrupt is actually generated.
Thus In other words, the fact that the interrupt flag was once active but not serviced is not remembered. Every polling cycle is new. While true, refer to the "interrupt flag" which is set at a transition of a edge triggered interrupt. thus the correct answer to the original post: Suppose I were to clear IE.7 for a few ms, and in that time my level-triggered external interrupt fires. When I set IE.7 again will the interrupt be handled or ignored? is YES, if level activated, NO if edge triggered. Erik |
| Topic | Author | Date |
| interrupts recieved during downtime | 01/01/70 00:00 | |
| Bible says | 01/01/70 00:00 | |
| I saw that too | 01/01/70 00:00 | |
| sample and hold | 01/01/70 00:00 | |
| thus the cirrect answer to the original | 01/01/70 00:00 | |
| Correct ? | 01/01/70 00:00 | |
| if it is level, it need to remain | 01/01/70 00:00 | |
| yes | 01/01/70 00:00 | |
| If this is what you ment then | 01/01/70 00:00 | |
| Interrupt | 01/01/70 00:00 | |
| why? | 01/01/70 00:00 | |
| here's why | 01/01/70 00:00 | |
eh... | 01/01/70 00:00 | |
| sample and hold | 01/01/70 00:00 |