Parker Solar Probe (Parker) is a spacecraft orbiting close to the Sun in the Earth-Sun ecliptic plane. One of the main goals of this spacecraft mission is to determine the relative contributions of different mechanisms in heating up the solar wind plasma that constantly streams outwards from the Sun. Among these mechanisms, resonant interactions between protons gyrating around interplanetary magnetic field lines and circularly polarized electromagnetic waves are thought to be a major contributor. The Faraday Cup instrument on Parker measures the flux of solar wind ions, and we have used a specialized measurement campaign to infer high-cadence measurements of the proton velocity, density, and temperature. During some of these measurements, we have identified periods where we see bunches of these protons oscillating with the circularly polarized wave, implying they are being directly accelerated by the wave electric field perturbation. Quantifying this contribution will enhance our understanding of the contribution of electromagnetic wave heating to the energy budget of solar wind ions.