| ??? 04/25/07 12:46 Read: times |
#137921 - For just two devices Responding to: ???'s previous message |
I said:
If it really is too much for the PC, then how about a slave controller that just does the comms to the PC and the other slave devices? Erik Malund said:
I would do as Andy suggest whether or not "it really is too much for the PC". The thread title says, "multiple 8052s", but the original post is actually talking specifically about just two. http://www.8052.com/forum/read.phtml?id=136548 For just two devices, I think all this talk of external comms processors and/or multidrop protocols is probably excessive (yes, I know I started it). For just two devices, I would almost certainly go for FTDI's USB-to-Dual-RS232 device: http://apple.clickandbuild.com/cnb/shop/...tegoryID=9 http://www.8052.com/forum/read.phtml?id=136552 Then the PC software is just two straight-forward COM port interfaces (it then wouldn't matter whether you used the FTDI dual unit, or two single USB-to-RS232 adaptors, or two real COM ports, or any other combination!) |
| Topic | Author | Date |
| multiple 8052 communication with PC | 01/01/70 00:00 | |
| RS485 | 01/01/70 00:00 | |
| More COM: Ports | 01/01/70 00:00 | |
| Further additional COM: ports | 01/01/70 00:00 | |
| multiple 8052 communication with PC | 01/01/70 00:00 | |
| Simple solution | 01/01/70 00:00 | |
| Recipe for a short circuit? | 01/01/70 00:00 | |
| Not on a standard 8051? | 01/01/70 00:00 | |
| whether that is a problem is for the OP to determi | 01/01/70 00:00 | |
| protocol ?? | 01/01/70 00:00 | |
| yes - no - see above | 01/01/70 00:00 | |
| master slave PC performance | 01/01/70 00:00 | |
| multi-GHz PC can get a lot done in a few ms! | 01/01/70 00:00 | |
| Slave comms controller? | 01/01/70 00:00 | |
| expanding on th above | 01/01/70 00:00 | |
| For just two devices | 01/01/70 00:00 | |
| been there, done that | 01/01/70 00:00 | |
In this case... | 01/01/70 00:00 | |
| Interrupt Request? | 01/01/70 00:00 | |
| not really | 01/01/70 00:00 | |
| Not on a PC | 01/01/70 00:00 | |
| Not that it can't be done | 01/01/70 00:00 | |
| Another recipe is a ring!!! | 01/01/70 00:00 | |
| sure, if you have all the time in the world | 01/01/70 00:00 |