| ??? 12/13/05 05:30 Read: times |
#105114 - Maybe a Name change? Responding to: ???'s previous message |
Andy Neil said:
The fundamental thing that's missing is a definition of what RS-232 actually is, or any reference at all to the RS-232 standard.
In particular, the distinction between the logic-level asynchronous interface at the UART's IO pins, and the bipolar signalling (among other things) that specifically makes RS-232 - and hence the need for a transceiver (such as MAX232). I kinda thought the reference to reference to Craig Peacock's Serial Guide covered most of this, however I think that I could work in a short paragraph to touch this. Andy Neil said:
Many misconceptions about RS232 are due to a failure to consult the Source Document; ie, the RS232 spec: http://www.8052.com/forum/read.phtml?id=57912 http://www.8052.com/forum/read.phtml?id=46426 http://www.8052.com/forum/read.phtml?id=24916 I will reference this in the links section and mention it. Andy Neil said:
Hyperterminal You should mention that some Hyperterminal versions will let you change all the settings, and will even display the new settings in the status bar, but won't actually use the new settings until after you Disconnect and then Connect again. This was true of the Win-98 version, at least. Some versions grey-out all the options unless you Disconnect before entering the Properties dialogue. Still not exactly brilliant User Interface design. This is a definite mention. Maybe I need to consider a little different name for the document? It was not intended to be a technical guide to the RS232 specification. It's more intended as a step by step guide to establishing a basic RS232 connection between PC and micro controller. Something someone can use to take the two basic components- 8051 and common RS232 transceiver, and establish a basic connection to a PC (Terminal). I would like to include links for more in depth reading, but the most basic purpose is to get the person started. Jon I do appreciate all comments good or bad. I hope to end up with something that can be referenced as the final answer to "How do I connect my project to a PC?" |
| Topic | Author | Date |
| Feedback needed | 01/01/70 00:00 | |
| Couple of ideas | 01/01/70 00:00 | |
| Missing | 01/01/70 00:00 | |
| the source... | 01/01/70 00:00 | |
| Stupid EIA | 01/01/70 00:00 | |
| Maybe a Name change? | 01/01/70 00:00 | |
| minor but annoying ... | 01/01/70 00:00 | |
| USB | 01/01/70 00:00 | |
| Limited Experience | 01/01/70 00:00 | |
| known bad USB/serial | 01/01/70 00:00 | |
| FYI - Targus PA088 | 01/01/70 00:00 | |
| thoughts | 01/01/70 00:00 | |
| I am so stupid | 01/01/70 00:00 | |
| Kickstart | 01/01/70 00:00 | |
| attribution | 01/01/70 00:00 | |
| The ONE thing I always have to look up a | 01/01/70 00:00 | |
| Ok - Second revision, but still working, | 01/01/70 00:00 | |
| Nice | 01/01/70 00:00 | |
| OK | 01/01/70 00:00 | |
| MAX202 vs. MAX232A | 01/01/70 00:00 | |
| or the 232A | 01/01/70 00:00 | |
| Polled; Interrupt | 01/01/70 00:00 | |
| polled tx | 01/01/70 00:00 | |
| Assorted small ideas | 01/01/70 00:00 | |
| Not a good idea | 01/01/70 00:00 | |
| Serial speeds? | 01/01/70 00:00 | |
| Enhanced specifications | 01/01/70 00:00 | |
| That's a strange spec | 01/01/70 00:00 | |
| formal stuff | 01/01/70 00:00 | |
| formal | 01/01/70 00:00 | |
| who's the intended audience | 01/01/70 00:00 | |
| 3rd Revision | 01/01/70 00:00 | |
| Busy? | 01/01/70 00:00 | |
| more than a couple of comments... | 01/01/70 00:00 | |
| So..... | 01/01/70 00:00 | |
| what I like or not... | 01/01/70 00:00 | |
| comments | 01/01/70 00:00 | |
| Comments on Comments | 01/01/70 00:00 | |
| bah... | 01/01/70 00:00 | |
| more problems | 01/01/70 00:00 | |
| RE: Problems | 01/01/70 00:00 | |
| Something Strange | 01/01/70 00:00 | |
| Nope.... | 01/01/70 00:00 | |
| interrupt | 01/01/70 00:00 | |
| All members will enjoy | 01/01/70 00:00 | |
Intel serial intro app note | 01/01/70 00:00 |