| ??? 02/06/08 00:57 Read: times |
#150362 - Still on progress Responding to: ???'s previous message |
Hi all,
Thanks for the comments, Now currently I'm in progress on building the scheme similar like jerson said. I make a circuit that detecting the "bus free" (edge interrupt & stop bit) and also "hear & compare" if the data I sent same as it heard. But this is a kind complicated. And I also testing the longest delay of the pulse on 600m Cat5e cable. I also ever though about using polling technique as Jerson said. It looks a lot simple and fast enough if could run on 460kbps. But I really want to know how to build 460kbps on AT89C2051? And if I use polling, how about if 1 of the node "gone"? use timeout? and how to make algorithm that could increase the polling address node? (if I wish to make the nodes have plug n play feature) Now the protocol I made could handle max 32 bytes data and include CRC. Thanks Suhandry |
| Topic | Author | Date |
| Multi Master communication RS-485 ? | 01/01/70 00:00 | |
| how fast do you need to go? | 01/01/70 00:00 | |
| Use another cable pair - for bus busy | 01/01/70 00:00 | |
| that will not work | 01/01/70 00:00 | |
| How's about using with MAX1490 | 01/01/70 00:00 | |
| what good will that do ? | 01/01/70 00:00 | |
| Common solutions | 01/01/70 00:00 | |
| Multi master my way | 01/01/70 00:00 | |
| Still on progress | 01/01/70 00:00 | |
| wrong chip? | 01/01/70 00:00 | |
| Maybe Token Ring | 01/01/70 00:00 | |
| ARCNET | 01/01/70 00:00 | |
| re:multimaster | 01/01/70 00:00 | |
| what if two masters send 'busy' at the same time? | 01/01/70 00:00 | |
| re:collision | 01/01/70 00:00 | |
| all good and well; however ... | 01/01/70 00:00 | |
| separate the masters for network | 01/01/70 00:00 | |
sure, but the problems are the same | 01/01/70 00:00 |