3.6.1 30/03/2026

Améliorations

• General code enhancements

Corrections de bugs

• Fixed an ILLPARAM_TYPE issue with PCAN-Basic v5 when initializing CAN CC (related to PCAN_BUSSPEED_DATA)

Changements

• Non-PnP channel definitions are now deprecated

3.6.0 11/07/2025

Améliorations

• Added parameter PCANTP_PARAMETER_SEPARATION_TIME_FC_TX (minimum time between a First Frame and a Flow Control)
• API revised to align with ISO-15765-2:2024

Corrections de bugs

• Fixed CanApi fallback issues related to flags: 29-bit, RTR, FD, BRS, and InitializeFD
• Fixed an issue when using CanApi with channel handles 0x401 to 0x408 and 0x501 to 0x508
• Fixed issues in CANTP_AddFiltering_2016 when using ranged CAN IDs and/or filtering via can_msgtype

Changements

• Minor text changes in debug logs
• CANTP_RemoveMappings_2016 now supports the value PCANTP_CAN_ID_DEFINED_BY_NAI: removes all mappings

3.5.0 05/10/2023

Améliorations

• Added support for carrying out communication with available CAN-API 4 connections
• General code enhancements

Corrections de bugs

• Fixed initialization functions to handle an OK status with irregularities (like PCAN-Basic error 'PCAN_ERROR_CAUTION')
• Fixed issue with performance improvements of STMin values 0xF1 to 0xF3

Changements

• Updated ISO values for PCANTP_TIMEOUT_AR_ISO_15765_4, PCANTP_TIMEOUT_AS_ISO_15765_4, PCANTP_TIMEOUT_CS_ISO_15765_4 as specified in the ISO-15765-4 standard, revision 2021-07
• The API will now retry the transmission of CAN or CAN FD frames indefinitely if the lower layer API reports a transmit queue error
• The API will now assume that messages have been transmitted when the lower layer API reports a queue overrun error while waiting for a send confirmation. In this case, these messages are marked with the PCANTP_MSGFLAG_QOVERRUN_OCCURED flag
• The API now defers processing transmit messages when the lower layer API reports a transmit queue full error (the order of the write calls is preserved)

3.4.0 23/03/2023

Améliorations

• New ARM64 API library
• Added a new cantp_infostatus PCANTP_INFOSTATUS_CAUTION_RX_QUEUE_OVERRUN and its corresponding status value PCANTP_STATUS_CAUTION_RX_QUEUE_OVERRUN
• Added a header file and examples for Python

Changements

• CANTP_Read_2016 can now return a status with the information flag PCANTP_STATUS_CAUTION_RX_QUEUE_OVERRUN

3.3.0 31/08/2022

Améliorations

• Added cantp_msgtype PCANTP_MSGTYPE_CANINFO to classify non CAN data frames (status, error frames)
• Added parameter PCANTP_PARAMETER_ALLOW_MSGTYPE_CANINFO to allow CAN status and error frames from lower CAN API
• Added PCANTP_PARAMETER_RECEIVE_EVENT_CALLBACK parameter to register reception event user callback
• Added PCANTP_PARAMETER_RECEIVE_EVENT_CALLBACK_USER_CONTEXT parameter to pass arguments to reception event user callback

Corrections de bugs

• PCANTP_MSG_CANINFO with status frame BUS_OK were not being filtered
• Fixed check of single frame escape sequence consistency when all message data have the same value

Changements

• Validation of ISOTP data padding (constant data padding value) is disabled by default (invalidate ISOTP frames were tagged as CAN frames)
• CANTP_AddMapping always returns PCANTP_STATUS_MAPPING_INVALID when using formats: PCANTP_ISOTP_FORMAT_ENHANCED and PCANTP_ISOTP_FORMAT_FIXED_NORMAL
• Hardened detection of CANFD ISOTP Single Frames: when DLC>8, escape sequence is required
• Added check of FD single frame length by default
• Changed some debug logs to output hex value instead of decimal
• Sample projects are now delivered as zip package

3.2.0 27/10/2021

Améliorations

• Added parameter PCANTP_PARAMETER_WFT_MAX_TX
• Improved consistency checks for illegal ISOTP single frames (DLC checked against message's length and padding)
• Improved error detections during segmented communications for cases where a responding frame is received before the previous Tx frame is physically confirmed on the bus

Corrections de bugs

• Fixed issue with PCANTP_PARAMETER_RESET_HARD
• Fixed issue with miss interpretation of ISOTP parameter Wait Frame Transmission
• Fixed issue in consistency check for illegal ISOTP First frame
• Fixed half-duplex handling of unexpected arrival of N_PDU with same N_AI as currently being processed

Changements

• CANTP_Write and CheckMsg feature now automatically fix wrong ISOTP NAI (ex. when extension_address is not useable, it is set to 0)
• Usage of FF escape sequence limited to >4095 messages
• BRS flag differences in a single ISOTP communication is now allowed

3.1.2 21/05/2021

Améliorations

• Added ISO 15765 interleaving support of similar messages with the only difference of 11-bit / 29-bit flag
• Added .NET and Delphi examples

Corrections de bugs

• Fixed issue with ISO 15765 interleaving when the messages share the same network address information
• Fixed issue with sloppy mappings (i.e. when network address information is not set and only CAN IDs are used)
• Fixed headers and source files to use UTF-8 encoding
• Fixed compatibility issues with version 2.x:Fixed CAN ID stored in DATA for messages with format PCANTP_FORMAT_NONEFixed default value for the parameter PCANTP_PARAM_CAN_UNSEGMENTED on channels initialized with 2.x functionsFixed bad conversion of cantp_status when encapsulating a PCAN-Basic statusPCANTP_NETSTATUS_TIMEOUT_As and PCANTP_NETSTATUS_TIMEOUT_Ar are converted to PCANTP_NETSTATUS_TIMEOUT_A
• Fixed hierarchy overriding of DLC in CANTP_Write_2016, when writing a functional ISOTP message (order of overriding is: channel < mapping < message)
• Fixed CAN ID stored in DATA for messages with format PCANTP_FORMAT_NONE
• Fixed default value for the parameter PCANTP_PARAM_CAN_UNSEGMENTED on channels initialized with 2.x functions
• Fixed bad conversion of cantp_status when encapsulating a PCAN-Basic status
• PCANTP_NETSTATUS_TIMEOUT_As and PCANTP_NETSTATUS_TIMEOUT_Ar are converted to PCANTP_NETSTATUS_TIMEOUT_A

Changements

• Check added to prevent interpretation of CAN frames with DLC < 8 as ISOTP segmentation frames
• Improved memory checks to prevent possible crashes when calling API functions using an uninitialized cantp_msg variable
• .NET/Delphi headers adjusted:Missed constant values were addedFixed error in #define constant name : PCANTP_API_COMPATIBILITY_ISO_2006 -> PCANTP_API_COMPATIBILITY_ISO_2004Delphi: Fixed failure on CInt(Res)
• The function CANTP_GetErrorText_2016 supports now the error code PCANTP_STATUS_HANDLE_INVALID
• Typo corrections in resulting French error texts generated by the function CANTP_GetErrorText_2016
• CANTP_AddMapping now fails if it is tried to add a mapping with 29 bit ENHANCED, FIXED_NORMAL or MIXED addressing format. Corresponding 29-bit support must be disabled first
• Missed constant values were added
• Fixed error in #define constant name : PCANTP_API_COMPATIBILITY_ISO_2006 -> PCANTP_API_COMPATIBILITY_ISO_2004
• Delphi: Fixed failure on CInt(Res)

3.1.1 22/01/2021

Améliorations

• Added parameter PCANTP_PARAMETER_NETWORK_LAYER_DESIGN
• Added support for half duplex network layer design
• Added notes about can_info.dlc and the specialization of PCANTP_PARAMETER_CAN_TX_DL in mappings and messages
• Miscellaneous internal optimizations
• Documentation updated

Corrections de bugs

• Fixed CANTP_Read_2016 return status: status is not OK if a message is read but a network error occurred
• Fixed PCANTP_STATUS_MASK_PCAN value
• Fixed PCANTP_NETSTATUS_TIMEOUT_As, PCANTP_NETSTATUS_TIMEOUT_Ar values
• Fixed PCANTP_NETSTATUS_XMT_FULL, PCANTP_NETSTATUS_BUS_ERROR, PCANTP_NETSTATUS_NO_MEMORY values
• Fixed log level when debug mode is set to false

Changements

• CANTP_Write_2016 now corrects invalid values for msgdata.any->flags and msgdata.any->netstatus
• Changed logs related to protocol-frames to NOTICE instead of INFORMATION
• CANTP_GetValue_2016 and CANTP_SetValue_2016 return now PCANTP_STATUS_HANDLE_INVALID if parameter is not compatible with channel's handle
• Changed timestamp handling with USB devices to better handle USB delay performances and prevent STMin violation
• In CANTP_MsgEqual_2016, if messages are frames, function will resolve non-zero dlc to check length equality
• Fixed warnings in samples 02 and 04
• Fixed status issues and improved output messages in sample 06

3.1.0 03/12/2020

Améliorations

• Added parameter PCANTP_PARAMETER_RESET_HARD to reset CAN controller without losing mappings and settings
• Added functions CANTP_AddMsgRule_2016 and CANTP_RemoveMsgRule_2016
• Added support of message's options
• Added warning/error logs when PCAN-Basic returns a non-OK status in PCTPFrame::read/write functions
• Added new values PCANTP_DEBUG_xxx to filter log messages
• Added definitions PCANTP_MAX_CAN_ID_11_BIT, PCANTP_MAX_CAN_ID_29_BIT
• Logging improved (PCANTP_NONEBUS now logs API function entries and exits, while channels logs Rx/Tx CAN frames)
• Logging information enhanced with PCANTP_PARAMETER_DEBUG
• Logging filtering optimized
• Improved handling of bus errors when transmitting an ISO-TP message
• Updated examples #02, #04 to allow segmented communications
• Updated example #05 warning only unsegmented communications are available by design in this sample
• New examples #09 and #10 representing an ISO-TP client and an ISO-TP server
• Documentation updated

Corrections de bugs

• Fixed override hierarchy with CAN_TX_DL parameter (global setting << mapping << message)
• Fixed memory leaks when PCAN-UDS_2013 is connected
• Fixed issue in message comparison of self-receive frame when flag ESI is set
• Fixed log_level of logs when a bus error occurs (warning instead of error used for non bus-off error)
• Fixed rare memory exception when API hooks are installed (like PCAN-UDS)
• Fixed possible issue when sending a functional ISO-TP FD message with DLC greater than 8 on a CAN only channel. CANTP_Write now returns PCANTP_STATUS_PARAM_INVALID_VALUE
• Fixed CANTP_Write function to ensure backward compatibility: function no longer modifies the input parameter pMessageBuffer

Changements

• Optimized behavior of parameter PCANTP_PARAMETER_CAN_TX_DL: FC and last CF frames will use the lowest padded DLC
• Lowered thread's priority of loggers
• Newly initialized channels now use the log_level configured in PCANTP_HANDLE_NONEBUS
• Changed CANTP_MsgEqual_2016 to ignore ESI flag when comparing self-receive messages
• PCTPChannel ThreadMain now use CANTP_StatusIsOk in 'strict' mode to warn about bus errors
• StatusCheck will return an error if BUS_OFF flag is set
• Logging is now disabled by default
• CANTP_AddMapping returns PCANTP_STATUS_PARAM_INVALID_VALUE if values for can_id, can_id_flow_ctrl or can_tx_dl are invalid
• [WARNING] CANTP_StatusIsOk_2016 will return OK on bus error (as expected by documentation)

3.0.1 16/07/2020

Améliorations

• Added parameter PCANTP_PARAMETER_MSG_CHECK

Corrections de bugs

• Fixed logging issue when activating PCANTP_PARAMETER_DEBUG
• Fixed issue with CANTP_RemoveMapping_2016 and CANTP_RemoveMappings_2016: CAN IDs for flow control were not being removed

Changements

• The parameter PCANTP_PARAMETER_DEVICE_NUMBER:was marked as deprecatedwas renamed to PCANTP_PARAMETER_DEVICE_ID
• The network error "PCANTP_NETSTATUS_TIMEOUT_As" is now raised if the "First Frame" or "Flow Control Frame" of an ISO-TP message is not confirmed within "TIMEOUT_AS" time
• was marked as deprecated
• was renamed to PCANTP_PARAMETER_DEVICE_ID

3.0.0 27/05/2020

Améliorations

• New interface supporting ISO 15762-2, revision 2016
• Fully binary compatible with applications using PCAN-ISO-TP.dll, version 2.x
• Backward compatibility support for projects based on ISO 15762-2, revision 2004 (PCAN-ISO-TP.dll, version 2.x)
• General code enhancements

2.2.2 21/11/2019

Corrections de bugs

• Structure alignment information was missing within the header files

2.2.1 09/07/2019

Améliorations

• The configuration of the underlying certificate checking was changed to avoid delays at initialization time due to certificate revoke-search online

2.2.0 23/05/2019

Améliorations

• Fixed typo with the parameter PCANTP_PARAM_SEPERATION_TIME, renamed to PCANTP_PARAM_SEPARATION_TIME
• Fixed typo with the parameter PCANTP_PARAM_SEPERATION_TIME_OPTIMIZATION, renamed to PCANTP_PARAM_SEPARATION_TIME_OPTIMIZATION
• General review of references due to update of parameter names

Corrections de bugs

• The function PCANTP_GetValue was returning PCANTP_ERROR_OK if the underlying PCANBasic.dll was not present

2.1.0 05/02/2019

Améliorations

• New parameter PCANTP_PARAM_SEPERATION_TIME_OPTIMIZATION, used to ensure that STMin is always strictly respected

2.0.3 17/12/2018

Améliorations

• The log files have now a timestamp with a resolution in microseconds

Corrections de bugs

• In some scenarios under Windows® 7, an exception was thrown when the library was unloaded
• An overflow within internal timestamps was taking place when the host PC was running for several weeks

2.0.2 05/03/2018

Améliorations

• CANTP_AddMapping now prevent the creation of a mapping with PCANTP_FORMAT_FIXED_NORMAL or PCANTP_FORMAT_ENHANCED formats
• General code improvements on header files
• Code of sample projects enhanced

Corrections de bugs

• Fixed typo in the VB.Net header where PCANTP_PARAM_CAN_UNSEGMENTED is defined
• Fixed an issue when defining a global J1939 priority and mappings
• Fixed invalid status when using an invalid parameter value
• PCAN_GetStatus was returning PCAN-Basic status values
• Fixed flag issue with message's member IDTYPE
• Fixed issue when calling CAN_Uninitialize instead of CANTP_Uninitialize

2.0.1 07/09/2017

Améliorations

• PCTPClient and PCTPServer samples were updated:Command-line arguments were improvedHandling of errors on initializationServer uses now an event for messages reading
• Command-line arguments were improved
• Handling of errors on initialization
• Server uses now an event for messages reading

Corrections de bugs

• User-defined mappings could not be found due to priority problems regarding 29-bit standard mappings

2.0.0 16/01/2017

Améliorations

• Added CAN FD support through a new function CANTP_InitializeFD
• Added new PCAN-ISO-TP message type to distinguish incoming or outgoing start frames
• Transmission timing was enhanced

Corrections de bugs

• Heap corruption when an ISO-TP message contained an invalid data length

1.4.3 02/11/2016

Améliorations

• PCAN connection now implements auto-reset on bus-off error
• Optimized transmission when STmin = 0
• Added support for J1939 priority with compliant ISO-TP messages
• Added support to read/write unsegmented CAN frames
• New .NET Samples (C# and VB.NET)

Corrections de bugs

• Fixed network communication errors with PCAN-PCI devices

1.4.2 21/04/2016

Améliorations

• Added parameter PCANTP_PARAM_PADDING_VALUE to change CAN data padding value
• Added support for additional PCAN-Basic channels (PCAN-Basic 4.x)
• Updated N_As, N_Ar, N_Cr timeouts computing
• Improved calculation of separation time between packages to take arbitration delays into account

Corrections de bugs

• Fixed timeout deadlock when calling PCANTP_Uninitialize with value PCANTP_NONEBUS
• Fixed timeout computing of Seperation Time Min.

1.4.1 09/09/2015

Améliorations

• ISO-TP Header files edited to support PCAN-Basic 4.x
• Adjustments done to support some PassThru configurations (J2534)

1.3.0 13/08/2015

Améliorations

• Added 'PCANTP_PARAM_RECEIVE_EVENT' parameter for message reception over event notification
• General performance improved

1.2.0 04/08/2015

Améliorations

• Added reception support for (non-ISO-TP) CAN frames
• Added value PCANTP_CAN_UNFORMATTED_ALL_FRAMES which allows to retrieve all ISO-TP fragmented messages as CAN frames
• Added the new function PCANTP_GetErrorText for Error-Text retrieving
• Enhancement with Mappings: New possibilty to register mappings with the same CAN ID but different CAN ID responses (used with Extended Addressing)
• Thread management performance improved (thread synchronization)
• Message processing performance improved (fetching procedure)

Corrections de bugs

• There was a problem when transmitting short (unsegmented) and large (segmented) ISO-TP messages at the same time

1.1.0 21/05/2015

Améliorations

• New structure for managing timestamps
• CANTP_Read supports a new parameter to return the time when the message was received
• The parameter PCANTP_PARAM_SEPARATION_TIME now handles microseconds
• Examples were updated as well as the help file

1.0.0 14/11/2014

Changements

• First release