| ??? 10/08/10 14:02 Read: times |
#178990 - Framing/voltage issues Responding to: ???'s previous message |
Thanks a million for all the comments. Just reached my office from the site. The site was at a remote place and I panicked.
I thought the device was not able to produce the necessary output voltage when connected to one specific USB port. Another possibility I thought was that, the baud errors were on the opposite sides and the net error was adding up creating some framing issue for a single byte. Anyway, with PC com port everything worked perfectly. Also, with some USB ports, everything worked perfectly. I actually want to check the pulses with a scope, if I get some time. I have 4 serial to USB adapters, and I had used my best one. Others, some times hang once in 4 or 5 hours, at times. You remove the cable out, and put it back in, and it is ready for action again. My fundamentals are pretty bad. How does the serial port assemble a single byte asynchronously? How does it handle the input if the local oscillator is running at 2392 and the other guy is sending it at 2412 or something? |
| Topic | Author | Date |
| Serial port, serial to USB and framing/voltage issues | 01/01/70 00:00 | |
| "proper connection"? | 01/01/70 00:00 | |
| PIC versus SiLabs C8051 | 01/01/70 00:00 | |
| Sign of a cheap & nasty adaptor | 01/01/70 00:00 | |
| the moral of the story | 01/01/70 00:00 | |
| FTDI (equipped) | 01/01/70 00:00 | |
| Serial number | 01/01/70 00:00 | |
| Why do you say, "framing/voltage issues" ? | 01/01/70 00:00 | |
| Framing/voltage issues | 01/01/70 00:00 | |
| fundamentals etc = "bible time" | 01/01/70 00:00 | |
| How UARTs work | 01/01/70 00:00 | |
| fundamentals | 01/01/70 00:00 | |
| Baud rate errors | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 | |
| Store data to 8051 from Serial port | 01/01/70 00:00 | |
| why not? | 01/01/70 00:00 | |
| help with code | 01/01/70 00:00 | |
| you can get all the help you need ... | 01/01/70 00:00 | |
| thanks | 01/01/70 00:00 | |
Check this settting also... | 01/01/70 00:00 |