rUv ce171696b2 fix: rate-limit CSI sends and add ENOMEM backoff to prevent crash (#132) ...

The CSI callback fires for every WiFi frame in promiscuous mode
(100-500+ fps). Each call invoked sendto() synchronously, exhausting
lwIP packet buffers (errno 12 = ENOMEM). The rapid-fire failures
cascaded into a LoadProhibited guru meditation crash.

Two fixes:

1. csi_collector.c: Rate-limit UDP sends to 50 Hz (20ms interval).
   CSI frames arriving between sends are dropped — the sensing
   pipeline only needs 20-50 Hz.

2. stream_sender.c: When sendto fails with ENOMEM, suppress further
   sends for 100ms to let lwIP reclaim buffers. Logs the backoff
   event and resumes automatically.

Closes #127

2026-03-03 16:00:40 -05:00

..

esp32-csi-node

fix: rate-limit CSI sends and add ENOMEM backoff to prevent crash (#132)

2026-03-03 16:00:40 -05:00