Hab ein gutes Tutorial dazu gefunden:
http://www.mikrocontroller.net/articles/CRC

RP6BASE_LEDs.hex:
Code:
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:10159000A00080939F00C8E2D0E0193C18F018EC3E
:1015A00088EC01C0812F80938B0010928C001093E7
:1015B000890010928A00802F0E94DE021092E200C1
:1015C0001092E1001092D4001092D300D093B20098
:1015D000C093B100D0939300C09392008091840097
:1015E0008093E500E0916500F09166000995FF2089
:1015F00019F406C00E947A0A809184008370D1F7A2
:10160000DF91CF911F910F91FF9008951F93CF937A
:10161000DF93382FEA01122F80918400836080933A
:1016200084001092D6001092D5001092A000109263
:101630009F00373180F086EF9FEF831B9109880F61
:10164000991F840F951F9093D6008093D500909397
:10165000A00080939F00CE0102979093AA008093F0
:10166000A9009093880080938700C832D105B8F410
:1016700084E190E09093AA008093A9009093880061
:10168000809387008AE090E09093D6008093D50005
:101690009093A00080939F00C8E2D0E004C021E0B6
:1016A000C039D20798F4393288F0CE0196958795E3
:1016B000969587959E01281B390B3093D600209371
:1016C000D5003093A00020939F0038E21092E200F2
:1016D0001092E1001092D4001092D300393C18F01F
:1016E00038EC88EC01C0832F80938B0010928C0023
:1016F0003093890010928A00862F0E94DE02D093D8
:10170000B200C093B100D0939300C0939200809137
:1017100084008093E500E0916500F09166000995F2
:10172000112319F406C00E947A0A80918400837004
:10173000D1F7DF91CF911F9108955D9BFECF8CB9BA
:101740000895FC0104C05D9BFECF31968CB9808169
:101750008823C9F7089503C05D9BFECF2CB9FC0117
:10176000019624912223C1F70895FC01E40FF11D95
:1017700005C05D9BFECF31968CB961508081882376
:1017800011F06623B1F708951F920F920FB60F92D2
:1017900011242F938F939F93EF93FF9320917F00BA
:1017A00080917E00922F981B9032A8F480917D004A
:1017B000E82FF0E09CB1E251FF4F90838F5F809360
:1017C0007D002F5F20937F00813210F010927D000A
:1017D0001092ED0006C08CB18093810081E080936F
:1017E000ED00FF91EF919F918F912F910F900FBE80
:1017F0000F901F9018951092ED0090917E008091AF
:101800007F00891711F4E0E013C09F5F90937E0082
:1018100080917C00813210F010927C0080917C00DD
:10182000E82FF0E0E251FF4FE0818F5F80937C0072
:101830008E2F0895AC011092ED0020E016C09F5F3E
:1018400090937E0080917C00E82FF0E0E251FF4F02
:101850009081FA01E20FF11D90838F5F80937C00ED
:10186000813210F010927C002F5F90917E00809169
:101870007F00891B861718F7822F089580917F00BB
:1018800090917E00891B089557988CB180938000B9
:1018900010927C0010927D0010927E0010927F00CA
:1018A0001092ED00579A08950F931F93DF93CF93F3
:1018B000CDB7DEB761970FB6F894DEBF0FBECDBFD0
:1018C000462F8E010F5F1F4FB80150E00E941D0D83
:1018D000C8010E94A10B61960FB6F894DEBF0FBE3F
:1018E000CDBFCF91DF911F910F910895FF920F937C
:1018F0001F93DF93CF93CDB7DEB761970FB6F89400
:10190000DEBF0FBECDBF262FF42E8E010F5F1F4FFF
:10191000B801422F50E00E941D0DF80101900020F7
:10192000E9F73197E01BF10B4F2D4E1B141664F4B1
:1019300080E341505D9BFECF8CB94423D1F7CE01AB
:1019400001960E94A10B05C04195C8016F2D0E9410
:10195000B50B61960FB6F894DEBF0FBECDBFCF9129
:10196000DF911F910F91FF900895629FD001739FA7
:10197000F001829FE00DF11D649FE00DF11D929F2B
:10198000F00D839FF00D749FF00D659FF00D99276A
:10199000729FB00DE11DF91F639FB00DE11DF91F8E
:1019A000BD01CF0111240895AA1BBB1B51E107C043
:1019B000AA1FBB1FA617B70710F0A61BB70B881FDF
:1019C000991F5A95A9F780959095BC01CD0108956E
:1019D00097FB092E07260AD077FD04D0E5DF06D055
:1019E00000201AF4709561957F4F0895F6F7909551
:1019F00081959F4F0895A1E21A2EAA1BBB1BFD01E2
:101A00000DC0AA1FBB1FEE1FFF1FA217B307E407DD
:101A1000F50720F0A21BB30BE40BF50B661F771F35
:101A2000881F991F1A9469F7609570958095909515
:101A30009B01AC01BD01CF010895FB019F01E8941A
:101A40004230C4F04532B4F44A3029F497FB1EF416
:101A5000909581959F4F642F77270E94D40C805DCD
:101A60008A330CF0895D8193CB010097A1F716F4BE
:101A70005DE251931082C9010C943E0DDC01FC0122
:101A8000672F71917723E1F7329704C07C916D93B2
:101A900070836291AE17BF07C8F30895F894FFCF23
:0A1AA00001E503EB03C902F50100A4
:00000001FF
Nehmen wir doch mal die 1. Zeile:
":100000000C944B010C9489020C94A9020C94C0032B"

Das kann man ja jetzt auseinanderziehen:
":" <- neues Paket?
"100000000" <- Irgendeine fortlaufende Adresse (welche?)
"C944B010C9489020C94A9020C94C0032B" <- 33 Zeichen je 8 Bit, aber 256/8=32 ?!?

Dann ganz am Ende:
":0A1AA00001E503EB03C902F50100A4"
":00000001FF"
Was bedeuten die beiden Zeilen?

Und was ist mit dem Generator-Polynom? Ist das das Teil in der letzten Zeile? (wobei das doch 16 Bit (CRC16), also 2 Zeichen a 8 Bit sein müssten)