chsh-sk-ncs-tc-wifi-throughput

Flash the board with the zperf and high-performance overlays, then run the run_throughput_test.py script with the serial port and device label. Keep iperf -s -u running on the Mac for TX measurements; results print to stdout and save to /tmp/results_<label>.json.

Flash one device with the nrf7002eb2_mspi shield (sQSPI@32MHz) and another with nrf7002eb2 (SPI@8MHz), then run the test script once per device. Compare the TX/RX Mbps values against the SPI@8MHz baseline of roughly 4.6-4.9 Mbps from WCS-78.

Both devices must be flashed, UART ports free, the Wi-Fi router reachable on both SSIDs, the Mac on wired Ethernet at 192.168.92.178, and iperf -s -u running in a separate terminal. A config.json with SSID, password, and Mac IP must exist.

Python stdout buffering hides output until the script exits. Always invoke it with python3 -u for unbuffered output, and confirm no other serial terminal is holding the UART port open.

The iperf server is not running on the Mac. Start iperf -s -u in a separate terminal before running the script; the script reuses an existing server or starts its own if none is found.

The FLPR VPR sQSPI read deadline is missed at 32 MHz, which is a known issue documented in WCS-121. The skill's result interpretation table flags sQSPI values around 0.4-0.8 Mbps versus SPI's 4.3-5.1 Mbps as this failure mode.