| Robert Henneke 11/21/08 04:05 Read: 358 times Wijchen The Netherlands |
#160163 - How to test a comport ? |
Hi Guys
I have an old PC that I want to use as a terminal for my 8051 system. I want to use COM2 Windows states that the device is working properly. But when a connect my 8051 (with the cable I use with my other PC) there is no reply (There must be a logon message at reset) Questions: Are the connections OK Is the Uart in the PC OK How to determine wich pin is wich signal. Can I use a scope or a DMM. Wich testprogram to use. All help will be greatly appreciated. Have a nice day Robert |
| Topic | Author | Date |
| How to test a comport ? | Robert Henneke | 11/21/08 04:05 |
| Scope is good. | Per Westermark | 11/21/08 06:37 |
| connect it | Erik Malund | 11/21/08 07:17 |
| Short pins 2 & 3 on PC Comport | Marshall Brown | 11/21/08 16:59 |
| that's only half the "test" | Richard Erlacher | 11/22/08 13:54 |
| Maybe a third? | Andy Neil | 11/22/08 14:46 |
| you don't have to use them | Richard Erlacher | 11/22/08 23:37 |
| But that may require you to specifically turn them off | Andy Neil | 11/23/08 17:24 |
| Goodness! That must be difficult. | Richard Erlacher | 11/23/08 18:56 |
| No, it's not difficult | Andy Neil | 11/24/08 01:29 |
| Run Hyperterminal with flow control off | Joe Gold | 11/23/08 12:41 |
| I'm late.......... | JecksonS Ben | 11/24/08 01:01 |
| Hyperterminal bundled with Windows | Andy Neil | 11/24/08 01:32 |
| do the LOOPBACK TEST | Mahesh Joshi | 11/24/08 06:19 |
LOOP BACK | Mahesh Joshi | 11/24/08 06:21 |