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driver: CAN interface should be compatible with CAN-FD interface #9087

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walter-xie opened this issue Jul 24, 2018 · 2 comments
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driver: CAN interface should be compatible with CAN-FD interface #9087

walter-xie opened this issue Jul 24, 2018 · 2 comments
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@alexanderwachter
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area: CAN Enhancement Changes/Updates/Additions to existing features

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@walter-xie
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FYI: https://www.can-cia.org/can-knowledge/can/can-fd/
@nashif nashif added the Enhancement Changes/Updates/Additions to existing features label Jul 24, 2018
@alexanderwachter
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alexanderwachter commented Aug 25, 2018 •
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I dont't think so.

  • CAN-FD is not compatible with CAN.
    The size of the data buffer is 64 not 8 bytes (waste of memory when allocating message buffers).
  • The send function would need to have a parameter defining the data rate which is confusing when only dealing with CAN.
  • There is no CAN-FD controller available in any controller supported by zephyr.

@walter-xie do you need CAN-FD for a project or product up to date?

@alexanderwachter
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It is compatible now. CAN-FD drivers are wip

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@nashif @alexanderwachter @galak @walter-xie