On 04.11.2022 10:56:16, Stéphane Grosjean wrote: > Hello all, > > I have searched the net, but I can't find a clear explanation of what > the "presume-ack" option available in socket-can is. > > Some PEAK-System devices offer an option called "self-ack" which > allows the controller sending the frame to also send the ACK itself. Does it actually send an ACK to the bus or ignore the missing ACK? > Does this behavior correspond to what the "presume-ack" option should > enable? > > Thank you all for your help and regards, In | https://lore.kernel.org/all/1404934273-19233-3-git-send-email-nebaruzdin@xxxxxxxxx Nikita Edward Baruzdin writes: | Most CAN controllers have a support for ignoring ACK absence. Some of | them refer to this feature as a self test mode (e. g. SJA1000) and some | include it as a part of a loopback mode (e. g. MCP2510). | | Setting the introduced flag via netlink should make CAN controller | perform a successful transmission, even if there is no acknowledgement | (dominant ACK bit) received. Does that answer your question? Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung West/Dortmund | Phone: +49-231-2826-924 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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