| ??? 03/29/10 16:45 Modified: 03/29/10 16:47 Read: times |
#174598 - Interrupt priorities... Responding to: ???'s previous message |
http://www.8052.com/tutint.phtml said:
When considering interrupt priorities, the following rules apply: Nothing can interrupt a high-priority interrupt--not even another high priority interrupt. A high-priority interrupt may interrupt a low-priority interrupt. A low-priority interrupt may only occur if no other interrupt is already executing. If two interrupts occur at the same time, the interrupt with higher priority will execute first. If both interrupts are of the same priority the interrupt which is serviced first by polling sequence will be executed first. Also, this... David Flanagan said:
...is a really bad idea in an interrupt handler. |
| Topic | Author | Date |
| Timer Problem Assembly Code | 01/01/70 00:00 | |
| Interrupt priorities... | 01/01/70 00:00 | |
| Also... | 01/01/70 00:00 | |
| The missing words | 01/01/70 00:00 | |
| You sure? | 01/01/70 00:00 | |
| many ways to skin a cat | 01/01/70 00:00 | |
| Actually very relevant | 01/01/70 00:00 | |
| My impression is | 01/01/70 00:00 | |
| Interesting, but missing the point surely... | 01/01/70 00:00 | |
| Interrupts are 'saved' | 01/01/70 00:00 | |
| Soft interrupts | 01/01/70 00:00 | |
| in a '51 forum | 01/01/70 00:00 | |
| Still missing the point... | 01/01/70 00:00 | |
| the missing reti's have already been mentioned | 01/01/70 00:00 | |
Apart from missing reti... | 01/01/70 00:00 | |
| Interupt priorities | 01/01/70 00:00 |