On 09.02.2024 22:25:37, Oliver Hartkopp wrote: > On 2024-02-09 18:28, Dr. Michael 'Mickey' Lauer wrote: > > My team and I have designed and developed > > a new CAN(FD) adapter based on ESP32S3 and MCP2518fd > > primarily aimed at ECU firmware reprogramming, > > but eventually also for the use as OBD2-adapter, > > CAN-logger, etc. > > > > The next incarnation will also have a > > USB interface and I’m planning the necessary > > changes for its firmware. > > > > I would like it to be compatible with SocketCAN > > out of the box — optimally without writing a > > Linux driver, but rather reusing an existing one. > > > > Which of the mainline SocketCAN drivers would you recommend > > basing my USB protocol on? From a quick glance, > > I’m leaning towards GS-USB, since this already > > supports different hardware families. > > Yes. I would also recommend the gsusb driver and the CandleLight firmware > project on the other side: ACK. gs_usb is the way to go for USB-to-CAN adapters. > https://github.com/candle-usb/candleLight_fw > > ... where currently the CAN FD support is in the testing phase IIRC. The USB protocol for CAN-FD is stable and supported by the kernel and the Work-In-Progress firmware. The firmware can be found here: | https://github.com/candle-usb/candleLight_fw/pull/139 | https://github.com/candle-usb/candleLight_fw/pull/176 We're currently discussing the implementation details of the firmware, but the USB part is, as mentioned above, stable. > Both the CAN(FD) adapter firmware and also the Linux kernel driver is > actively developed by Marc Kleine-Budde and others. regards, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung Nürnberg | Phone: +49-5121-206917-129 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 |
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