| Jan Waclawek 08/04/07 17:33 Modified: 08/04/07 17:42 Read: 791 times Bratislava Slovakia |
#142771 - I said it\'s simple Responding to: John Myers's previous message |
once you have that "online calculator" page... (my favourite)0
OK it's not simple because there is so many buzz around, and everybody uses different nomenclature and different algorithm and stuff. Even the word, "polynome", it's completely misleading - it refers to a very weird sort of arithmetics, not what normal people are normally using, but nobody tells you this. In the last few years I was forced to go through the same procedure four or five times to implement various protocols, every time the calculation was different, all kinds of stuff - look at that page, there are many boxes to click and fill in, these are those damn'd variants of CRC and you never know that the perverse person who devised the protocol decided to reverse the bits or use the "nondirect" version or a nonzero initial value - or all of these... OK so go to that page and follow my instructions:
JW PS. The table for the nibble method is simply the first 16 items from the "standard" table |
| Topic | Author | Date |
| How to create a crc table? | John Myers | 08/04/07 02:33 |
| simple | Jan Waclawek | 08/04/07 08:10 |
| RE: simple | John Myers | 08/04/07 15:34 |
| I said it\'s simple | Jan Waclawek | 08/04/07 17:33 |
| Thank you | John Myers | 08/04/07 18:27 |
| Protocols | Andy Neil | 08/06/07 07:48 |
| examples | Jan Waclawek | 08/06/07 08:05 |
| Runtime Computed Table?? | Michael Karas | 08/04/07 09:14 |
| RE: Runtime...? | John Myers | 08/04/07 16:02 |
| table is not necessary | Jan Waclawek | 08/04/07 17:41 |
| Benchmark | John Myers | 08/04/07 18:16 |
| I did benchmarks as such on AVR | Michael Karas | 08/04/07 19:38 |
| Similar findings | Russell Bull | 08/04/07 21:05 |
| no beavers that I've tended to!! | Michael Karas | 08/04/07 22:50 |
| not bitwise.... | Jan Waclawek | 08/05/07 02:45 |
| Better is a strong word | Neil Kurzman | 08/05/07 21:19 |
| Also comment about SMBus PEC Code... | Michael Karas | 08/05/07 21:30 |
| The Table | Neil Kurzman | 08/06/07 11:19 |
| The Nibble Table for Poly 107 | Neil Kurzman | 08/06/07 11:20 |
| The formula | Neil Kurzman | 08/06/07 11:22 |
| Have you seen this? | Richard Erlacher | 08/06/07 18:42 |
| Now I have | Neil Kurzman | 08/06/07 21:26 |
Yes, that is a Key Document! | Andy Neil | 08/07/07 02:45 |



