| ??? 03/11/05 19:09 Read: times |
#89499 - external interupt problem |
my task is to generate gate pulses using 8051.
so i have stored desired pulse pattern in look-up tabel form in the memory and using some simple look-up table fetching code i have obtained the pulses correctly. then i need to synchronize the starting of pulses with the input signal. for that i used interupt1 INT1 PIN13 in edge-triggered mode. when my input signal changes from high-low, it should interupt the controller and start the pulse generation. for testing the code functionality, i used a square wave generator(function generator)as interupt signal and i connected the +ve (terminal of the function generator) to PIN13 and -ve to GND(8051). without switching on the function generator the pulse generation started. why the edge-triggering is not working whether shall need to connected anyother element. please help me for this. and i tried to connect just the GND pin of the function generator to PIN13, there aslo it starts the pulses. |
| Topic | Author | Date |
| external interupt problem | 01/01/70 00:00 | |
| grounding or noise | 01/01/70 00:00 | |
| initially connected high | 01/01/70 00:00 | |
| Triggered signal generator | 01/01/70 00:00 | |
| Re:external interupt problem | 01/01/70 00:00 | |
| USED CODE | 01/01/70 00:00 | |
| Goobldeygook | 01/01/70 00:00 | |
| formatted code | 01/01/70 00:00 | |
| Formatted ??? | 01/01/70 00:00 | |
| only interrupt routine | 01/01/70 00:00 | |
| questions | 01/01/70 00:00 | |
| description | 01/01/70 00:00 | |
| that was my problem | 01/01/70 00:00 | |
| without interrupt | 01/01/70 00:00 | |
| OK what happens | 01/01/70 00:00 | |
| timer? | 01/01/70 00:00 | |
| source of confoosion | 01/01/70 00:00 | |
| To Vijayganesh! | 01/01/70 00:00 | |
code confusion | 01/01/70 00:00 |