The PCBUSB library realizes a 'PCAN-USB Driver for macOS' using Apple's IOUSBKit. It supports up to 8 PCAN-USB or PCAN-USB FD devices from PEAK-System Technik, Darmstadt. See the header-file PCBUSB.h for details.

PCAN is a registered trademark of PEAK-System Technik GmbH, Darmstadt, Germany.
Mac and macOS are trademarks of Apple Inc., registered in the U.S. and other countries.

The library is freeware without any warranty or support!

Limitations

Only the following devices are supported:
- PCAN-USB (item no. IPEH-002021 and IPEH-002022)
- PCAN-USB FD (item no. IPEH-004022)
- PCAN-USB Pro FD (item no. IPEH-004061), but only the first channel (CAN1)
CAN_Write resp. CAN_WriteFD: Transmission of the given message on the CAN bus is not acknowledged by the USB interface. A transmission queue like in the Windows driver is not realized.
CAN_FilterMessages: Filter ranges are not supported. Acceptance filtering is supported by setting parameter (PCAN_ACCEPTANCE_FILTER_11BIT or PCAN_ACCEPTANCE_FILTER_29BIT).
CAN_GetValue: Still unsupported parameter are: PCAN_5VOLTS_POWER, PCAN_BUSOFF_AUTORESET, PCAN_LOG_LOCATION, PCAN_LOG_STATUS, PCAN_LOG_CONFIGURE, PCAN_LOG_TEXT, PCAN_CHANNEL_IDENTIFYING, PCAN_BITRATE_ADAPTING, PCAN_IP_ADDRESS, PCAN_LAN_SERVICE_STATUS, PCAN_INTERFRAME_DELAY, PCAN_ATTACHED_CHANNELS_COUNT, PCAN_ATTACHED_CHANNELS, PCAN_HARD_RESET_STATUS, PCAN_LAN_CHANNEL_DIRECTION
CAN_SetValue: Still unsupported parameter are: PCAN_5VOLTS_POWER, PCAN_RECEIVE_EVENT, PCAN_BUSOFF_AUTORESET, PCAN_LOG_LOCATION, PCAN_LOG_STATUS, PCAN_LOG_CONFIGURE, PCAN_LOG_TEXT, PCAN_CHANNEL_IDENTIFYING, PCAN_BITRATE_ADAPTING, PCAN_ALLOW_STATUS_FRAMES, PCAN_ALLOW_RTR_FRAMES, PCAN_ALLOW_ERROR_FRAMES, PCAN_INTERFRAME_DELAY, PCAN_ALLOW_ECHO_FRAMES, PCAN_HARD_RESET_STATUS.
CAN_LookUpChannel: Channel searching is currently not supported.
Writing into a trace file: Only 100'000 frames can be recorded into one trace file. An existing trace file with the same file name will be overwritten.

Known bugs and caveats

The LED of the PCAN-USB FD device is not turned on (green) when the device is plugged into the USB bus. This is due to the fact that there is no 'real' driver for PCAN-USB devices under macOS. So the LED of the PCAN-USB FD device cannot signal the presence of a driver. When operating the LED signals the correct operation state of the PCAN-USB FD device (blinking green, or red on error).
The same LED issue is for the PCAN-USB Pro FD device. The LED for the first channel signals its operation state only when operated by an application.
The second channel of the PCAN-USB Pro FD device is not supported by the driver. It is not listed in the device list; its LED is turned off.
When a successfully initialized PCAN-USB device is physically removed from USB any subsequent call of API functions (e.g. CAN_Read) will not succeed even when the device is plugged in again. An error code will be returned in this case.

Author: Uwe Vogt, UV Software, Berlin

Download: http://www.mac-can.com