Open source Rust firmware for the KOWSI KWS-X1 USB-C meter. Live power, Ah/Wh counting, power graph, ripple view, the charger's full USB PD offer (EPR included), fixed, PPS and AVS triggers up to 28/30 V, Quick Charge 2.0/3.0, Huawei SCP and FCP, cable e-marker reading, a 5 A test, PD sniffing and calibration. No vendor firmware needed.