| ??? 03/20/09 20:54 Read: times |
#163715 - Use a watchdog timer Responding to: ???'s previous message |
If the watchdog isn't fed during that time frame, it executes an MPU reset. Still, if the switch is stuck low........assuming you have redesign privelege, you could maybe use a reed relay on the interrupt pin that allows for normal operation, if the watchdog hits, it could toggle the reed and get you out of the loop. You could then have a sub routine that kicks the reed back and validate switch operation and not go into the ISR if the switch is still low.
Just spitballing here. |
| Topic | Author | Date |
| Question of level triggered interrupt | 01/01/70 00:00 | |
| Edge Triggered Interrupt | 01/01/70 00:00 | |
| Only Level triggered | 01/01/70 00:00 | |
| It's not a "problem". | 01/01/70 00:00 | |
| the problem is not technical... | 01/01/70 00:00 | |
| Let me explain again | 01/01/70 00:00 | |
| Idea | 01/01/70 00:00 | |
| What the teacher wants... | 01/01/70 00:00 | |
| Several options... | 01/01/70 00:00 | |
| thats..... | 01/01/70 00:00 | |
| May be you missunderstud | 01/01/70 00:00 | |
| Use a while() trap | 01/01/70 00:00 | |
| Yeah | 01/01/70 00:00 | |
| Use a watchdog timer | 01/01/70 00:00 | |
| How about this? | 01/01/70 00:00 | |
| Wow | 01/01/70 00:00 | |
| which derivative has this feature ? | 01/01/70 00:00 | |
| Our friend the $ | 01/01/70 00:00 | |
Oooops | 01/01/70 00:00 | |
| Answer to my question | 01/01/70 00:00 | |
| Thought about | 01/01/70 00:00 |