| ??? 08/02/05 01:17 Read: times |
#98650 - think... Responding to: ???'s previous message |
Daegeun Lee said:
When I connect serial cable between PC and 8051, PC send some signals to 8051 for telling connection? So, how 8051 know disconnection? In the simplest case, you cannot tell! Therefore, you need to add some means of identifying disconnection. You could have some sort of "keepalive" signal - when the "keepalive" stops, the link has been broken. Or you could use (some of) the RS232 handshaking pins... |
| Topic | Author | Date |
| How to know the time when connect serial | 01/01/70 00:00 | |
| think... | 01/01/70 00:00 | |
| a question | 01/01/70 00:00 | |
| Thanks all | 01/01/70 00:00 | |
Please post the solution, someone might | 01/01/70 00:00 |