Changes

Jump to: navigation, search
* This application note applies to [[fitlet2 supports CAN if configured ]] with the [http://fit-pc.com/wiki/index.php/Fitlet2_FACET_Cards#FC-SCG FC-SCG FACET]FACET-Card running Linux* It provides an example of how to use the CANbus feature of FC-SCG under Linux* The following application is required for the CAN bus functionality: [https://fit-iot.com/files/download/fitlet2/sw/drivers/Linux/fitlet2-linux-FTDI-CAN-sniffer-master.tar.gz fitlet2 FTDI CAN sniffer]
Works with the following application:[https://fit-iot.com/files/download/fitlet2/sw/drivers/Linux/fitlet2-linux-FTDI-==Simple CAN-bus sniffer-master.zip fitlet2 FTDI CAN sniffer]==
Written for the following chain: [https://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT232H.pdf FTDI232H] <-> [https://www.microchip.com/wwwproducts/en/en010406 MCP2515].<br>
Tested on Linux 4.14.41 (Debian sid)
Prerequisites:[https://code.google.com/archive/p/libmpsse/downloads libmpsse-1.3] libftdi1-1.4 via https://www.intra2net.com/en/developer/libftdi/repository.php libusb-1.0 via https://libusb.info/ Avaliable binaries: sniff -- dynamically linked against mentioned libraries sniff.static -- statically linked executable '''Usage:''' Prints received frames to STDOUT, sends to net frames gotten from STDIN.Options:  --can_bitrate Hz required CAN bus speed --can_osc Hz CAN clock oscillator frequency in factdecimal modifiers 'k' and 'M' are allowed  --promiscuous [01] a given RX buffer is to receive all frames --rollover rollover mode for RX buffer 0 --mask [01]:sid-eid acceptance mask for a mentioned RX buffer --filter [012345]:sid-eid acceptance filter filters 0 and 1 are purposed for RX buffer 0 and the others for RX buffer 1 mask and filters format: n:sid-eid where: num number of mask or filter sid Standard identifier of mask/filter eid enhanced identifier of mask/filterOmitted eid (if any) will be zeroed.  --sniff listen-only mode --showraw print out frames received/to be sent in hex Allowed frame to be sent format: sid:paiload[0...i] sid-eid:paiload[0...i]* where "i" must be less than 8 For more detailed explanation of the mentioned options please read the MCP2515 datasheet:<br>[http://ww1.microchip.com/downloads/en/DeviceDoc/20001801H.pdf MCP2515 CAN bus interface chip datasheet]  [[category: fitlet2]][[category: software]][[category: Extension boards]][[category: application notes]]
1,586
edits