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protocol investigation #5

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opened 2022-09-05 03:56:58 -04:00 by morgan · 3 comments
morgan commented 2022-09-05 03:56:58 -04:00
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Looks like the baud rate is 460800, I cannot tell a difference between 1 or 2 Stop Bits. Dump so far mostly looks like below, with the except that it's not always 'steady' and the pattern will 'slide' to the right and wrap around.

00037785: 0022 f700 bb00 2800 bb  ."....(..
0003778e: 0022 ff00 bb00 2800 bb  ."....(..
00037797: 0022 ff00 bb00 e100 bb  .".......
000377a0: 0022 ff00 bb00 e100 bb  .".......
000377a9: 0020 ff00 bb00 2800 bb  . ....(..
000377b2: 0022 f700 bb00 2800 bb  ."....(..
000377bb: 0022 ff00 bb00 e100 bb  .".......
000377c4: 0022 f700 bb00 2800 bb  ."....(..
000377cd: 0020 f700 bb00 e100 bb  . .......
000377d6: 0022 ff00 bb00 2800 bb  ."....(..
000377df: 0022 f700 bb00 2800 bb  ."....(..
000377e8: 0022 f700 bb00 2800 bb  ."....(..
000377f1: 0020 ff00 bb00 2800 bb  . ....(..
000377fa: 0022 ff00 bb00 2800 bb  ."....(..
00037803: 0020 f700 bb00 e100 bb  . .......
0003780c: 0022 f700 bb00 e100 bb  .".......
00037815: 0022 ff00 bb00 e900 bb  .".......
0003781e: 0022 f700 bb00 e100 bb  .".......
00037827: 0022 f700 bb00 2800 bb  ."....(..
00037830: 0022 f700 bb00 e100 bb  .".......
00037839: 0022 ff00 bb00 e100 bb  .".......
00037842: 0020 ff00 bb00 e100 bb  . .......
0003784b: 0022 f700 bb00 e900 bb  .".......
00037854: 0020 f700 bb00 2800 bb  . ....(..
0003785d: 0022 ff00 bb00 2800 bb  ."....(..
00037866: 0020 f700 bb00 2800 bb  . ....(..
0003786f: 0022 ff00 bb00 e900 bb  .".......
00037878: 0022 f700 bb00 e100 bb  .".......
Looks like the baud rate is 460800, I cannot tell a difference between 1 or 2 Stop Bits. Dump so far mostly looks like below, with the except that it's not always 'steady' and the pattern will 'slide' to the right and wrap around. ``` 00037785: 0022 f700 bb00 2800 bb ."....(.. 0003778e: 0022 ff00 bb00 2800 bb ."....(.. 00037797: 0022 ff00 bb00 e100 bb ."....... 000377a0: 0022 ff00 bb00 e100 bb ."....... 000377a9: 0020 ff00 bb00 2800 bb . ....(.. 000377b2: 0022 f700 bb00 2800 bb ."....(.. 000377bb: 0022 ff00 bb00 e100 bb ."....... 000377c4: 0022 f700 bb00 2800 bb ."....(.. 000377cd: 0020 f700 bb00 e100 bb . ....... 000377d6: 0022 ff00 bb00 2800 bb ."....(.. 000377df: 0022 f700 bb00 2800 bb ."....(.. 000377e8: 0022 f700 bb00 2800 bb ."....(.. 000377f1: 0020 ff00 bb00 2800 bb . ....(.. 000377fa: 0022 ff00 bb00 2800 bb ."....(.. 00037803: 0020 f700 bb00 e100 bb . ....... 0003780c: 0022 f700 bb00 e100 bb ."....... 00037815: 0022 ff00 bb00 e900 bb ."....... 0003781e: 0022 f700 bb00 e100 bb ."....... 00037827: 0022 f700 bb00 2800 bb ."....(.. 00037830: 0022 f700 bb00 e100 bb ."....... 00037839: 0022 ff00 bb00 e100 bb ."....... 00037842: 0020 ff00 bb00 e100 bb . ....... 0003784b: 0022 f700 bb00 e900 bb ."....... 00037854: 0020 f700 bb00 2800 bb . ....(.. 0003785d: 0022 ff00 bb00 2800 bb ."....(.. 00037866: 0020 f700 bb00 2800 bb . ....(.. 0003786f: 0022 ff00 bb00 e900 bb ."....... 00037878: 0022 f700 bb00 e100 bb ."....... ```
morgan commented 2022-09-05 03:57:57 -04:00
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sliding

000012c6: bb00 2800 bb00 22f7 00  ..(..."..
000012cf: bb00 2800 bb00 20f7 00  ..(... ..
000012d8: bb00 28fe 00bb 0022 ff  ..(....".
000012e1: 00bb 0028 00bb 0022 f7  ...(...".
000012ea: 00bb 00fe 00bb 0022 f7  .......".
000012f3: 00bb 00e1 00bb 0020 f7  ....... .
000012fc: 00bb 00e1 00bb 0022 f7  .......".
00001305: 00bb 00e9 00bb 0022 f7  .......".
0000130e: 00bb 0028 00bb 0022 f7  ...(...".
00001317: 00bb 00fe 00bb 0022 f7  .......".
00001320: 00bb 0028 00bb 0020 f7  ...(... .
00001329: 00bb 0028 00bb 0022 f7  ...(...".
00001332: 00bb 0028 00bb 0020 f7  ...(... .
0000133b: 00bb 0028 00bb 0022 f7  ...(...".
00001344: 00bb 0028 00bb 0022 f7  ...(...".
0000134d: 00bb 00e1 00bb 0022 f7  .......".
00001356: 00bb 0028 00bb 0022 f7  ...(...".
0000135f: 00bb 00fe 00bb 0022 ff  .......".
00001368: 00bb 00e1 00bb 0022 f7  .......".
00001371: 00bb 00e1 00bb 0022 f7  .......".
0000137a: 00bb 00e1 00bb 0020 f7  ....... .
00001383: 00bb 0028 00bb 0022 f7  ...(...".
0000138c: 00bb 0028 00bb 0022 f7  ...(...".
00001395: 00bb 0028 00bb 0022 ff  ...(...".
0000139e: 00bb 0028 00bb 0020 f7  ...(... .
000013a7: 00bb 00e9 00bb 0022 f7  .......".
000013b0: 00bb 0028 00bb 0022 f7  ...(...".
000013b9: 00bb 0028 00bb 0020 f7  ...(... .
000013c2: 00bb 0028 00bb 0022 f7  ...(...".
000013cb: 00bb 00e9 00bb 0022 f7  .......".
000013d4: 00bb 0028 00bb 0022 ff  ...(...".
000013dd: 00bb 00e1 00bb 0020 f7  ....... .
000013e6: 00bb 0028 00bb 0022 f7  ...(...".
000013ef: 00bb 0028 00bb 0022 ff  ...(...".
000013f8: 00bb 00e1 00bb 0022 ff  .......".
00001401: 00bb 0028 00bb 0022 f7  ...(...".
0000140a: 00bb 00e1 00bb 0022 f7  .......".
00001413: 00bb 0028 00bb 0022 f7  ...(...".
0000141c: 00bb 00e1 00bb 0020 ff  ....... .
00001425: 00bb 0028 00bb 0022 f7  ...(...".
0000142e: 00bb 0028 00bb 0022 f7  ...(...".
00001437: 00bb 0028 00bb 0022 ff  ...(...".
00001440: 00bb 0028 00bb 0020 f7  ...(... .
00001449: 00bb 0028 00bb 0022 f7  ...(...".
00001452: 00bb 0028 00bb 0022 ff  ...(...".
0000145b: 00bb 0028 00bb 0020 f7  ...(... .
00001464: 00bb 0028 fe00 bb00 22  ...(...."
0000146d: ff00 bb00 e900 bb00 22  ........"
00001476: f700 bb00 e100 bb00 22  ........"
0000147f: f700 bb00 2800 bb00 20  ....(... 
00001488: ff00 bb00 2800 bb00 22  ....(..."
00001491: ff00 bb00 2800 bb00 22  ....(..."
sliding ``` 000012c6: bb00 2800 bb00 22f7 00 ..(...".. 000012cf: bb00 2800 bb00 20f7 00 ..(... .. 000012d8: bb00 28fe 00bb 0022 ff ..(....". 000012e1: 00bb 0028 00bb 0022 f7 ...(...". 000012ea: 00bb 00fe 00bb 0022 f7 .......". 000012f3: 00bb 00e1 00bb 0020 f7 ....... . 000012fc: 00bb 00e1 00bb 0022 f7 .......". 00001305: 00bb 00e9 00bb 0022 f7 .......". 0000130e: 00bb 0028 00bb 0022 f7 ...(...". 00001317: 00bb 00fe 00bb 0022 f7 .......". 00001320: 00bb 0028 00bb 0020 f7 ...(... . 00001329: 00bb 0028 00bb 0022 f7 ...(...". 00001332: 00bb 0028 00bb 0020 f7 ...(... . 0000133b: 00bb 0028 00bb 0022 f7 ...(...". 00001344: 00bb 0028 00bb 0022 f7 ...(...". 0000134d: 00bb 00e1 00bb 0022 f7 .......". 00001356: 00bb 0028 00bb 0022 f7 ...(...". 0000135f: 00bb 00fe 00bb 0022 ff .......". 00001368: 00bb 00e1 00bb 0022 f7 .......". 00001371: 00bb 00e1 00bb 0022 f7 .......". 0000137a: 00bb 00e1 00bb 0020 f7 ....... . 00001383: 00bb 0028 00bb 0022 f7 ...(...". 0000138c: 00bb 0028 00bb 0022 f7 ...(...". 00001395: 00bb 0028 00bb 0022 ff ...(...". 0000139e: 00bb 0028 00bb 0020 f7 ...(... . 000013a7: 00bb 00e9 00bb 0022 f7 .......". 000013b0: 00bb 0028 00bb 0022 f7 ...(...". 000013b9: 00bb 0028 00bb 0020 f7 ...(... . 000013c2: 00bb 0028 00bb 0022 f7 ...(...". 000013cb: 00bb 00e9 00bb 0022 f7 .......". 000013d4: 00bb 0028 00bb 0022 ff ...(...". 000013dd: 00bb 00e1 00bb 0020 f7 ....... . 000013e6: 00bb 0028 00bb 0022 f7 ...(...". 000013ef: 00bb 0028 00bb 0022 ff ...(...". 000013f8: 00bb 00e1 00bb 0022 ff .......". 00001401: 00bb 0028 00bb 0022 f7 ...(...". 0000140a: 00bb 00e1 00bb 0022 f7 .......". 00001413: 00bb 0028 00bb 0022 f7 ...(...". 0000141c: 00bb 00e1 00bb 0020 ff ....... . 00001425: 00bb 0028 00bb 0022 f7 ...(...". 0000142e: 00bb 0028 00bb 0022 f7 ...(...". 00001437: 00bb 0028 00bb 0022 ff ...(...". 00001440: 00bb 0028 00bb 0020 f7 ...(... . 00001449: 00bb 0028 00bb 0022 f7 ...(...". 00001452: 00bb 0028 00bb 0022 ff ...(...". 0000145b: 00bb 0028 00bb 0020 f7 ...(... . 00001464: 00bb 0028 fe00 bb00 22 ...(...." 0000146d: ff00 bb00 e900 bb00 22 ........" 00001476: f700 bb00 e100 bb00 22 ........" 0000147f: f700 bb00 2800 bb00 20 ....(... 00001488: ff00 bb00 2800 bb00 22 ....(..." 00001491: ff00 bb00 2800 bb00 22 ....(..." ```
morgan commented 2022-09-05 13:15:10 -04:00
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The above were generated with pyserial-miniterm /dev/ttyUSB2 460400 --raw|xxd -c 9 though pyserial-miniterm /dev/ttyUSB2 512000 --raw|xxd -c 8 seems to eliminate the 'sliding' issue

Overnight the test rigs fell over and the SOIC clip was not connected.

~~The above were generated with `pyserial-miniterm /dev/ttyUSB2 460400 --raw|xxd -c 9` though `pyserial-miniterm /dev/ttyUSB2 512000 --raw|xxd -c 8` seems to eliminate the 'sliding' issue~~ Overnight the test rigs fell over and the SOIC clip was not connected.
morgan commented 2022-09-05 19:02:05 -04:00
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Scope capture of idle state.

Scope capture of idle state.
DS1Z_QuickPrint2.png
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DS1Z_QuickPrint2.png DS1Z_QuickPrint1.png
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