ppisa commented on issue #15567: URL: https://github.com/apache/nuttx/issues/15567#issuecomment-2621160125
For your information (@raiden00pl, @acassis, @radek-pesina, @tmedicci ), the CAN FD stack developed for RTEMS by @michallenc has undergone [review](https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/49) (hundreds minor style, naming etc. details solved during review) and has been mainlined. I propose use bittiming from that driver for NuttX. See [dev/can/can-bittiming.h](https://gitlab.rtems.org/rtems/rtos/rtems/-/blob/main/cpukit/include/dev/can/can-bittiming.h) and [dev/can/can-bittiming.c](https://gitlab.rtems.org/rtems/rtos/rtems/-/blob/main/cpukit/dev/can/can-bittiming.c). It is same model which I have proposed for SocketCAN 20 years ago and which is used by Linux kernel till today - [include/uapi/linux/can/netlink.h](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/uapi/linux/can/netlink.h?h=v6.13) and [drivers/net/can/dev/calc_bittiming.c](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/net/can/dev/calc_bittiming.c?h=v6.13). The code originates from [LinCAN](https://ortcan.sourceforge.net/lincan/) and that basic part used for RTEMS has been maintained whole time outside Linux source tree and that is why we have had full right to use following license ``` BSD-2-Clause OR Apache-2.0 OR GPL-2.0-or-later ``` So the code should be properly licensed for NuttX. I am not sure when I or somebody from people from the groups connected to me get to that but this is the plan, goal for future incremental step. Then we can test the approach on CTU CAN FD, I have tested @raiden00pl CTU CAN FD NuttX driver against x86 QEMU. I have tested our complete RTEMS stack on our LPC40xx LX_CPU board with hacked CTU CAN FD instance in FPGA in addition to our standard Zynq setup and I have NuttX running on LX_CPU as well, so adapting the driver to run on real hardware after adding required bittiming support should not take much effort. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@nuttx.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
