Hi,
I am trying to decode the data produced by the EU digital tachograph units.
The data structures are defined in ASN.1, I copied them out of the
specification document and fiddled with them until they compiled with asn1c
(svn revision 1406).
Wow! I am very impressed already. Just a few hours ago I was under the
impression I would have to write all that bit-fiddling code by hand!
The ASN.1 source file I produced can be downloaded for reference from:
http://www.marian-aldenhoevel.de/tmp/eurotacho.asn1
I believe the data is encoded using PER, but little do I know, the specs are
not very clear on that. I do know that there don't seem to be any tag values
in there. A sample download from a unit which I think starts with a instance
of the "VuIdentification" type can be downloaded from:
http://www.marian-aldenhoevel.de/tmp/2008-09-06-18-37-27-0000.dat
To verify this I thought I'd compile converter-sample with VuIdentification as
the PDU. I have set it all up using autoconf/automake and I can get it to
compile but it fails at the link stage:
[EMAIL PROTECTED]:/home/kbox/TachoX/src/eurotacho# make
gcc -DPDU=VuIdentification -g -O2 -pthread -o converter converter-sample.o
pdu_collection.o ActivityChangeInfo.o Address.o BCDString.o
CalibrationPurpose.o Distance.o CardActivityDailyRecord.o
CardActivityLengthRange.o CardApprovalNumber.o CardCertificate.o
CardChipIdentification.o CardConsecutiveIndex.o ControlType.o
CardControlActivityDataRecord.o CardCurrentUse.o CardDriverActivity.o
CardDrivingLicenceInformation.o CardEventData.o CardEventRecord.o
CardFaultData.o CardFaultRecord.o CardIccIdentification.o CardIdentification.o
CardNumber.o CardPlaceDailyWorkPeriod.o CardPrivateKey.o CardPublicKey.o
CardRenewalIndex.o CardReplacementIndex.o CardSlotNumber.o CardSlotsStatus.o
CardStructureVersion.o CardVehicleRecord.o CardVehiclesUsed.o Certificate.o
CertificateContent.o CertificateHolderAuthorisation.o CertificateRequestID.o
CertificationAuthorityKID.o CompanyActivityData.o CompanyActivityType.o
CompanyCardApplicationIdentification.o CompanyCardHolderIdentification.o
ControlCardApplicationIdentification.o ControlCardControlActivityData.o
ControlCardHolderIdentification.o CurrentDateTime.o DailyPresenceCounter.o
Datef.o DriverCardApplicationIdentification.o DriverCardHolderIdentification.o
EntryTypeDailyWorkPeriod.o EquipmentType.o EuropeanPublicKey.o
EventFaultType.o EventFaultRecordPurpose.o ExtendedSerialNumber.o
FullCardNumber.o HighResOdometer.o HighResTripDistance.o HolderName.o
K-ConstantOfRecordingEquipment.o KeyIdentifier.o L-TyreCircumference.o
Language.o LastCardDownload.o ManualInputFlag.o ManufacturerCode.o
MemberStateCertificate.o MemberStatePublicKey.o Name.o NationAlpha.o
NationNumeric.o NoOfCalibrationRecords.o NoOfCalibrationsSinceDownload.o
NoOfCardPlaceRecords.o NoOfCardVehicleRecords.o NoOfCompanyActivityRecords.o
NoOfControlActivityRecords.o NoOfEventsPerType.o NoOfFaultsPerType.o
OdometerValueMidnight.o OdometerShort.o OverspeedNumber.o PlaceRecord.o
PreviousVehicleInfo.o PublicKey.o RegionAlpha.o RegionNumeric.o
RSAKeyModulus.o RSAKeyPrivateExponent.o RSAKeyPublicExponent.o
SensorApprovalNumber.o SensorIdentification.o SensorInstallation.o
SensorInstallationSecData.o SensorOSIdentifier.o SensorPaired.o
SensorPairingDate.o SensorSerialNumber.o SensorSCIdentifier.o Signature.o
SimilarEventsNumber.o SpecificConditionType.o SpecificConditionRecord.o
Speed.o SpeedAuthorised.o SpeedAverage.o SpeedMax.o TDesSessionKey.o
TimeReal.o TyreSize.o VehicleIdentificationNumber.o
VehicleRegistrationIdentification.o VehicleRegistrationNumber.o
VuActivityDailyData.o VuApprovalNumber.o VuCalibrationData.o
VuCalibrationRecord.o VuCardIWData.o VuCardIWRecord.o VuCertificate.o
VuCompanyLocksData.o VuCompanyLocksRecord.o VuControlActivityData.o
VuControlActivityRecord.o VuDataBlockCounter.o VuDetailedSpeedBlock.o
VuDetailedSpeedData.o VuDownloadablePeriod.o VuDownloadActivityData.o
VuEventData.o VuEventRecord.o VuFaultData.o VuFaultRecord.o VuIdentification.o
VuManufacturerAddress.o VuManufacturerName.o VuManufacturingDate.o
VuOverSpeedingControlData.o VuOverSpeedingEventData.o
VuOverSpeedingEventRecord.o VuPartNumber.o VuPlaceDailyWorkPeriodData.o
VuPlaceDailyWorkPeriodRecord.o VuPrivateKey.o VuPublicKey.o VuSerialNumber.o
VuSoftInstallationDate.o VuSoftwareIdentification.o VuSoftwareVersion.o
VuSpecificConditionData.o VuTimeAdjustmentData.o VuTimeAdjustmentRecord.o
W-VehicleCharacteristicConstant.o WorkshopCardApplicationIdentification.o
WorkshopCardCalibrationData.o WorkshopCardCalibrationRecord.o
WorkshopCardHolderIdentification.o WorkshopCardPIN.o IA5String.o INTEGER.o
NativeEnumerated.o NativeInteger.o asn_SEQUENCE_OF.o asn_SET_OF.o
constr_CHOICE.o constr_SEQUENCE.o constr_SEQUENCE_OF.o constr_SET_OF.o
OCTET_STRING.o BIT_STRING.o asn_codecs_prim.o ber_tlv_length.o ber_tlv_tag.o
ber_decoder.o der_encoder.o constr_TYPE.o constraints.o xer_support.o
xer_decoder.o xer_encoder.o per_support.o per_decoder.o per_encoder.o
per_opentype.o -lusb -lhid
CardActivityDailyRecord.o:(.data+0x1e8): undefined reference to
`SET_OF_encode_uper'
CardEventData.o:(.data+0x1e8): undefined reference to `SET_OF_encode_uper'
CardFaultData.o:(.data+0x1e8): undefined reference to `SET_OF_encode_uper'
CardPlaceDailyWorkPeriod.o:(.data+0x168): undefined reference to
`SET_OF_encode_uper'
CardVehiclesUsed.o:(.data+0x168): undefined reference to `SET_OF_encode_uper'
CompanyActivityData.o:(.data+0x168): more undefined references to
`SET_OF_encode_uper' follow
collect2: ld returned 1 exit status
make: *** [converter] Error 1
I can't seem to find a definition fo SET_OF_encode_uper myself, so I can't
really blame the linker :-).
Is there a way to overcome this problem? I do not really need a PER encoder at
this stage, all I want is to decode. Can I just provide a dummy?
Ciao, MM
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