| ??? 03/04/09 03:37 Read: times |
#163048 - scope pictures Responding to: ???'s previous message |
Hi again,
Please click on the links in this post to see the bitstream I'm receiving. First, the image here is the ASCII 'U' bitstream. All looks good and it's a nice 01010101 bit stream. Next, here is an ASCII '3' bit stream from my board. Notice I doubled the micro seconds per division on the screen so the bit stream there looks to be 00110011. I'm new to serial comm's (obviously) but I believe the additional 01 between streams is the stop bit for the previous byte and the start bit for the next byte. I may be 180 off in my analysis due to inversion though so that's why I posted the pics for the more experienced to take a look at. What do you think? Thanks for your patience, Brian |
| Topic | Author | Date |
| serial comm problem | 01/01/70 00:00 | |
| what about TI? | 01/01/70 00:00 | |
| thank you | 01/01/70 00:00 | |
| Be better... | 01/01/70 00:00 | |
| no luck | 01/01/70 00:00 | |
| Settings | 01/01/70 00:00 | |
| What is your XTAL frequency ? | 01/01/70 00:00 | |
| parity and XTAL | 01/01/70 00:00 | |
| Eh ? | 01/01/70 00:00 | |
| one or the other | 01/01/70 00:00 | |
| my mistake | 01/01/70 00:00 | |
| scope pictures | 01/01/70 00:00 | |
| whatizit? | 01/01/70 00:00 | |
| where I measured it... | 01/01/70 00:00 | |
| waveforms look OK | 01/01/70 00:00 | |
| question | 01/01/70 00:00 | |
| LSBit comes first after startbit | 01/01/70 00:00 | |
| cable | 01/01/70 00:00 | |
| isolation and ESD protection | 01/01/70 00:00 | |
I have blown very few, if any, MAX232's | 01/01/70 00:00 | |
| Your scope trace looks normal | 01/01/70 00:00 | |
| more pics | 01/01/70 00:00 | |
| show picture at PC side | 01/01/70 00:00 |