infrastructure-wifi-csi-hardware-co-when-attempting-wifi-csi-based-human-sensing-but-n-c046b4bc

THEN Check that the WiFi hardware supports CSI (Channel State Information) extraction. Only specific chipsets like ESP32-S3, Intel 5300 NIC, or Atheros AR9580 work. Most consumer WiFi adapters do not expose CSI. For an easy and cheap entry point, use the ESP32-S3 (~$8): flash the provided firmware from `firmware/esp32-csi-node/`, run the Rust aggregator to parse live CSI frames, and verify frame capture (e.g., 693 frames at ~21.6 fps). If your hardware is unsupported, switch to a compatible device and follow the step-by-step tutorial.

// ESP32-S3 CSI configuration (paraphrased idea)
esp_err_t ret = esp_wifi_set_csi_config(&csi_config);
ret = esp_wifi_set_csi_rx_cb(&csi_cb_function, NULL);
ret = esp_wifi_set_csi(&config, true);