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<a href="https://gitlab.rtems.org/ppisa">Pavel Pisa</a>
<a href="https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1183#note_147971">commented</a>:
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<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Thanks for the work on this project. Due to problems identified on OpenCores SJA100 it took much more effort than expected.</p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">There is our FD frames tolerant fork of OpenCores SJA1000</p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial"><a href="https://gitlab.fel.cvut.cz/canbus/zynq/sja1000-fdtol" rel="nofollow noreferrer noopener" target="_blank" style="margin-top: 0;">https://gitlab.fel.cvut.cz/canbus/zynq/sja1000-fdtol</a></p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">It does not block the bus by sending error frames when CAN FD frames are sent between other FD capable controllers.</p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">There is a fix of <a href="https://gitlab.fel.cvut.cz/canbus/zynq/sja1000-fdtol/-/commit/878a9ebb481b1ecadf2de25b893147b30872b517" rel="nofollow noreferrer noopener" target="_blank" style="margin-top: 0;">bsp: fix: shifted data bytes location in valid frame after previous error</a> on our fixup branch.</p>
<p dir="auto" style="color: #3a383f; margin: 0 0 1rem;" align="initial">Due to troubles with OpenCores implementation, we have setup old Athlon based PC with parallel PCI slots and confirmed driver and RTEMS functionality against four genuine NXP SJA1000 chips on Kvaser PCICanQ card.</p>
<p dir="auto" style="color: #3a383f; margin: 0;" align="initial">The SJA1000 support can be interesting even for RTEMS port to Espressif ESP32 chips, most of them has CAN controller included which is based on OpenCores SJA1000, some of the first ones even with its specific problems. The variant on ESP32C3 and ESP32C6 should have most of problems fixed.</p>
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