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Jesse Hills
9580a90f55
ESPHome's espnow component drives esp_now_* from the main loop; on the P4 shim each call is a blocking CustomRpc round-trip, so under co-processor load mesh traffic stalls the loop (and the UI). Take the round-trips out of the hot path: - Mirror the co-processor peer table locally (spinlock-guarded, since the esp_now_* symbols are public and not guaranteed to be called only from the main loop) so esp_now_is_peer_exist() answers with no round-trip — the espnow component calls it twice per received frame and once per send. - Make esp_now_send() fire-and-forget: the frame is handed to the transport and the real TX result still arrives via the async SEND event, matching native esp_now_send semantics (which already report completion via the callback). - Make esp_now_add_peer()/del_peer() fire-and-forget too, updating the mirror locally. Safe against a following send to a just-added peer: both ride the same in-order CustomRpc channel and the co-processor processes REQs FIFO, so ADD_PEER lands before the SEND. mod_peer stays synchronous (off the hot path).
