canfd_filter_demo Directory Reference

Directory dependency graph for canfd_filter_demo:

Directories
	src

Detailed Description

Exercises the CAN-FD acceptance filter in internal loopback with three sub-rounds per iteration: an exact-ID match (0x100), a masked match (0x110 under mask 0x7F0), and an ID that must be filtered out (0x200).

The no-match round is the one that matters and also the one that is easy to get wrong: a frame left in the RX FIFO by the previous matched round reads exactly like a leak through the filter. The demo drains the FIFO between sub-rounds for that reason, and keeps per-sub-round counters (g_canfd_filter_exact_*, g_canfd_filter_mask_*, g_canfd_filter_nomatch_*) alongside the aggregate g_canfd_filter_match / _mismatch, so a failure names the sub-round rather than just the app.

No transceiver or external harness: the on-chip CAN-FD IP is looped back to itself. canfd_loopback is the same loopback with no filtering.